diff --git a/.github/workflows/quality.yml b/.github/workflows/quality.yml
new file mode 100644
index 00000000..0abe65e4
--- /dev/null
+++ b/.github/workflows/quality.yml
@@ -0,0 +1,32 @@
+name: Quality
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  quality:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+
+      - name: Setup Node
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Check formatting
+        run: npm run format:check
+
+      - name: Run tests
+        run: npm test
diff --git a/.husky/pre-commit b/.husky/pre-commit
new file mode 100755
index 00000000..f841cf21
--- /dev/null
+++ b/.husky/pre-commit
@@ -0,0 +1,2 @@
+#!/usr/bin/env sh
+npx lint-staged
diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 00000000..98b18013
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,6 @@
+node_modules/
+docs/.vitepress/dist/
+.git-history-backup-20260519/
+coverage/
+artifacts/
+temp/
diff --git a/README.md b/README.md
index b7238ff8..75fd7271 100644
--- a/README.md
+++ b/README.md
@@ -7,14 +7,19 @@ This repository is no longer only the `Learn Harness Engineering` course. It now
 - a reusable VitePress course platform
 - one active course selected at build time
 - multiple course manifests under `courses/`
+- isolated course content under `courses/<slug>/docs`
 
 ## Current structure
 
 - active course selector: [docs/.vitepress/active-course.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/docs/.vitepress/active-course.mjs:1)
 - active-course wrapper: [docs/.vitepress/course.manifest.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/docs/.vitepress/course.manifest.mjs:1)
+- builder shell: [docs/.vitepress/config.mts](/Users/matheuspuppe/Desktop/estudo/course-builder/docs/.vitepress/config.mts:1)
 - course manifests:
   - [courses/learn-harness-engineering/course.manifest.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/learn-harness-engineering/course.manifest.mjs:1)
   - [courses/agent-ops-bootcamp/course.manifest.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/agent-ops-bootcamp/course.manifest.mjs:1)
+- course content roots:
+  - [courses/learn-harness-engineering/docs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/learn-harness-engineering/docs:1)
+  - [courses/agent-ops-bootcamp/docs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/agent-ops-bootcamp/docs:1)
 
 ## Commands
 
@@ -29,6 +34,7 @@ To inspect and switch courses:
 
 ```bash
 npm run course:list
+npm run course:new -- my-new-course "My New Course"
 npm run course:activate -- learn-harness-engineering
 npm run course:activate -- agent-ops-bootcamp
 ```
@@ -44,22 +50,22 @@ Each course manifest defines:
 - `curriculum`
 - `homeByLocale`
 
-The VitePress layer reads the active manifest and builds nav, sidebar, branding, and homepage from it.
+The VitePress layer reads the active manifest and points `srcDir` at that course's own `docs` directory. Nav, sidebar, branding, homepage, and markdown content all come from the active course.
 
 ## Creating a new course
 
 1. Create `courses/<slug>/course.manifest.mjs`.
-2. Start from one of the existing manifests.
-3. Define the course `site`, `brand`, `theme`, `locales`, `curriculum`, and `homeByLocale`.
-4. Switch to it with `npm run course:activate -- <slug>`.
-5. Update `docs/` markdown content so it matches the new curriculum.
+2. Or scaffold both manifesto and docs with `npm run course:new -- <slug> "Course Title"`.
+3. Create `courses/<slug>/docs/` if you did not use the scaffold command.
+4. Define the course `site`, `brand`, `theme`, `locales`, `curriculum`, and `homeByLocale`.
+5. Add markdown content under `courses/<slug>/docs/<locale>/...` to match the curriculum.
+6. Switch to it with `npm run course:activate -- <slug>`.
 
 ## Current limitations
 
 - only one course is active per build
-- `docs/` content is still mostly from `Learn Harness Engineering`
 - the current manifest format is code-first, not CMS-driven
-- the public docs URLs still depend on each course's configured `site.base`
+- only one course is active per build
 
 ## Validation
 
diff --git a/WHITELABEL.md b/WHITELABEL.md
index 01982bb2..c0796828 100644
--- a/WHITELABEL.md
+++ b/WHITELABEL.md
@@ -6,6 +6,7 @@ O projeto agora está estruturado para suportar múltiplos cursos com um curso a
 
 - curso ativo: [docs/.vitepress/active-course.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/docs/.vitepress/active-course.mjs:1)
 - manifesto do curso atual: [courses/learn-harness-engineering/course.manifest.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/learn-harness-engineering/course.manifest.mjs:1)
+- conteúdo do curso atual: [courses/learn-harness-engineering/docs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/learn-harness-engineering/docs:1)
 - wrappers compatíveis com a camada antiga:
   - [docs/.vitepress/course.config.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/docs/.vitepress/course.config.mjs:1)
   - [docs/.vitepress/course-content.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/docs/.vitepress/course-content.mjs:1)
@@ -19,13 +20,15 @@ O projeto agora está estruturado para suportar múltiplos cursos com um curso a
 - manifesto de locales e labels de UI
 - currículo por locale
 - conteúdo da homepage por locale
+- conteúdo markdown por curso
 - seleção do curso ativo
 
 ## Como criar outro curso
 
 1. Crie uma pasta `courses/<slug>/`.
-2. Copie [courses/learn-harness-engineering/course.manifest.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/learn-harness-engineering/course.manifest.mjs:1) para o novo slug.
-3. Edite no manifesto:
+2. Crie `courses/<slug>/docs/`.
+3. Copie [courses/learn-harness-engineering/course.manifest.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/courses/learn-harness-engineering/course.manifest.mjs:1) para o novo slug.
+4. Edite no manifesto:
    - `site.title`
    - `site.description`
    - `site.base`
@@ -35,17 +38,17 @@ O projeto agora está estruturado para suportar múltiplos cursos com um curso a
    - `locales`
    - `curriculum`
    - `homeByLocale`
-4. Aponte [docs/.vitepress/active-course.mjs](/Users/matheuspuppe/Desktop/estudo/course-builder/docs/.vitepress/active-course.mjs:1) para o novo manifesto.
-5. Reescreva o conteúdo real em `docs/<locale>/` para bater com o currículo do novo curso.
+5. Adicione o conteúdo real em `courses/<slug>/docs/<locale>/` para bater com o currículo do novo curso.
+6. Ative o curso.
 
 Ou use os comandos:
 
 - `npm run course:list`
+- `npm run course:new -- <slug> "Course Title"`
 - `npm run course:activate -- <slug>`
 
 ## Limitações atuais
 
-- o conteúdo markdown em `docs/` ainda é do curso `Learn Harness Engineering`
 - o manifesto do curso atual ainda concentra muito conteúdo inline
 - ainda existe apenas um curso ativo por build
-- `README.md` ainda descreve o curso atual, não a plataforma
+- o builder ainda depende de manifests em código, não de uma camada editorial
diff --git a/courses/agent-ops-bootcamp/course.manifest.mjs b/courses/agent-ops-bootcamp/course.manifest.mjs
index 6952614e..1e0dc6ac 100644
--- a/courses/agent-ops-bootcamp/course.manifest.mjs
+++ b/courses/agent-ops-bootcamp/course.manifest.mjs
@@ -4,33 +4,30 @@ const courseManifest = {
     description:
       "A compact course on operating, debugging, and shipping agentic workflows in production teams.",
     base: "/course-builder/",
-    repoTreeUrl: "https://github.com/puppe1990/course-builder/tree/main"
+    repoTreeUrl: "https://github.com/puppe1990/course-builder/tree/main",
   },
   brand: {
-    logo:
-      'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%230B6E4F" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M4 12h16"/><path d="M12 4v16"/><circle cx="12" cy="12" r="8"/></svg>'
+    logo: 'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%230B6E4F" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M4 12h16"/><path d="M12 4v16"/><circle cx="12" cy="12" r="8"/></svg>',
   },
   theme: {
     fontStylesheets: [
-      "https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,400;6..72,600&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap"
+      "https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,400;6..72,600&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap",
     ],
     typography: {
-      body:
-        "'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif",
+      body: "'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif",
       heading:
         "'Newsreader', ui-serif, Georgia, Cambria, 'Times New Roman', Times, serif",
-      mono:
-        "'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace",
-      mermaid: "'Plus Jakarta Sans', sans-serif"
+      mono: "'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace",
+      mermaid: "'Plus Jakarta Sans', sans-serif",
     },
     layout: {
       maxWidth: "1280px",
       sidebarWidth: "280px",
-      cardRadius: "14px"
+      cardRadius: "14px",
     },
     effects: {
       featureShadow: "0 18px 48px rgba(11, 110, 79, 0.14)",
-      featureShadowDark: "0 18px 48px rgba(0, 0, 0, 0.4)"
+      featureShadowDark: "0 18px 48px rgba(0, 0, 0, 0.4)",
     },
     colors: {
       light: {
@@ -47,7 +44,7 @@ const courseManifest = {
         brandSoft: "rgba(11, 110, 79, 0.12)",
         divider: "rgba(8, 32, 20, 0.1)",
         sidebarBg: "#ECF5F0",
-        navBg: "#F6FBF8"
+        navBg: "#F6FBF8",
       },
       dark: {
         bg: "#0E1712",
@@ -63,9 +60,9 @@ const courseManifest = {
         brandSoft: "rgba(57, 163, 127, 0.16)",
         divider: "rgba(255, 255, 255, 0.12)",
         sidebarBg: "#0A120D",
-        navBg: "#0E1712"
-      }
-    }
+        navBg: "#0E1712",
+      },
+    },
   },
   locales: [
     {
@@ -78,31 +75,40 @@ const courseManifest = {
         resources: "Toolkit",
         skills: "Playbooks",
         resourceLibrary: "Toolkit",
-        tryHarness: "Open Templates ↗"
-      }
-    }
+        tryHarness: "Open Templates ↗",
+      },
+    },
   ],
   curriculum: {
     en: {
       lectures: [
         { text: "Welcome", link: "/en/" },
-        { text: "Operate Agents with Guardrails", link: "/en/lectures/operate-agents-with-guardrails/" },
-        { text: "Debug Long-Running Workflows", link: "/en/lectures/debug-long-running-workflows/" },
-        { text: "Ship with Runtime Feedback", link: "/en/lectures/ship-with-runtime-feedback/" }
+        {
+          text: "Operate Agents with Guardrails",
+          link: "/en/lectures/operate-agents-with-guardrails/",
+        },
+        {
+          text: "Debug Long-Running Workflows",
+          link: "/en/lectures/debug-long-running-workflows/",
+        },
+        {
+          text: "Ship with Runtime Feedback",
+          link: "/en/lectures/ship-with-runtime-feedback/",
+        },
       ],
       projects: [
         { text: "Overview", link: "/en/projects/" },
         { text: "Incident Drill", link: "/en/projects/incident-drill/" },
-        { text: "Release Checklist", link: "/en/projects/release-checklist/" }
+        { text: "Release Checklist", link: "/en/projects/release-checklist/" },
       ],
       resources: [
         { text: "Overview", link: "/en/resources/" },
         { text: "Runbooks", link: "/en/resources/templates/" },
         { text: "Reference", link: "/en/resources/reference/" },
-        { text: "Advanced Ops", link: "/en/resources/openai-advanced/" }
+        { text: "Advanced Ops", link: "/en/resources/openai-advanced/" },
       ],
-      skills: [{ text: "Playbooks", link: "/en/skills/" }]
-    }
+      skills: [{ text: "Playbooks", link: "/en/skills/" }],
+    },
   },
   homeByLocale: {
     en: {
@@ -110,20 +116,20 @@ const courseManifest = {
         title: "Welcome to Agent Ops Bootcamp",
         intro: [
           "Agent Ops Bootcamp focuses on how teams run, observe, and correct agentic systems under production constraints.",
-          "The course is intentionally compact: a few modules, a few labs, and a toolkit you can adapt to your own operating model."
+          "The course is intentionally compact: a few modules, a few labs, and a toolkit you can adapt to your own operating model.",
         ],
         references: [
           {
             label: "Operational feedback loops",
-            href: "https://openai.com/index/harness-engineering/"
-          }
-        ]
+            href: "https://openai.com/index/harness-engineering/",
+          },
+        ],
       },
       sections: {
         start: "Start here",
         mechanism: "Operating loop",
         learn: "You will practice",
-        next: "Next moves"
+        next: "Next moves",
       },
       startText:
         "This sample course exists to prove the platform can host a second curriculum with different naming, visual identity, and positioning.",
@@ -131,18 +137,18 @@ const courseManifest = {
         {
           title: "Modules",
           body: "Short theory units about operating agents safely.",
-          href: "./lectures/operate-agents-with-guardrails/"
+          href: "./lectures/operate-agents-with-guardrails/",
         },
         {
           title: "Labs",
           body: "Hands-on operational drills.",
-          href: "./projects/"
+          href: "./projects/",
         },
         {
           title: "Toolkit",
           body: "Runbooks and reusable templates.",
-          href: "./resources/"
-        }
+          href: "./resources/",
+        },
       ],
       mechanismText:
         "Production agent work improves when runtime feedback and verification are part of the operating loop.",
@@ -155,23 +161,23 @@ const courseManifest = {
       learnItems: [
         "Define operator-facing guardrails.",
         "Treat logs and runtime feedback as first-class inputs.",
-        "Run lightweight drills before real incidents."
+        "Run lightweight drills before real incidents.",
       ],
       nextIntro: "The sample path is intentionally small:",
       nextSteps: [
         {
           title: "Module 1",
           description: "Start with guardrails.",
-          href: "./lectures/operate-agents-with-guardrails/"
+          href: "./lectures/operate-agents-with-guardrails/",
         },
         {
           title: "Lab 1",
           description: "Run an incident drill.",
-          href: "./projects/incident-drill/"
-        }
-      ]
-    }
-  }
+          href: "./projects/incident-drill/",
+        },
+      ],
+    },
+  },
 };
 
 export default courseManifest;
diff --git a/docs/en/index.md b/courses/agent-ops-bootcamp/docs/en/index.md
similarity index 100%
rename from docs/en/index.md
rename to courses/agent-ops-bootcamp/docs/en/index.md
diff --git a/courses/agent-ops-bootcamp/docs/en/lectures/debug-long-running-workflows/index.md b/courses/agent-ops-bootcamp/docs/en/lectures/debug-long-running-workflows/index.md
new file mode 100644
index 00000000..2fade37f
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/lectures/debug-long-running-workflows/index.md
@@ -0,0 +1,14 @@
+# Debug Long-Running Workflows
+
+Long-running agents rarely fail in one obvious place. They drift, loop, or lose context across steps.
+
+## What to inspect
+
+- Execution logs
+- State transitions
+- Retry behavior
+- Handoff boundaries
+
+## Debugging principle
+
+Treat every long-running workflow as an observable system, not a black box prompt.
diff --git a/courses/agent-ops-bootcamp/docs/en/lectures/operate-agents-with-guardrails/index.md b/courses/agent-ops-bootcamp/docs/en/lectures/operate-agents-with-guardrails/index.md
new file mode 100644
index 00000000..793c8492
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/lectures/operate-agents-with-guardrails/index.md
@@ -0,0 +1,13 @@
+# Operate Agents with Guardrails
+
+Agent systems need explicit operating boundaries. This module shows how teams define ownership, stop conditions, and escalation paths before runtime issues become incidents.
+
+## Core rules
+
+- Define who can trigger the workflow.
+- Define what the agent can change without approval.
+- Define when the system must pause and ask for human review.
+
+## Outcome
+
+By the end of this module, you should have a lightweight guardrail policy that can be attached to any agent workflow.
diff --git a/courses/agent-ops-bootcamp/docs/en/lectures/ship-with-runtime-feedback/index.md b/courses/agent-ops-bootcamp/docs/en/lectures/ship-with-runtime-feedback/index.md
new file mode 100644
index 00000000..d94203d6
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/lectures/ship-with-runtime-feedback/index.md
@@ -0,0 +1,14 @@
+# Ship with Runtime Feedback
+
+Shipping agent systems safely requires a feedback loop between runtime behavior and product decisions.
+
+## Runtime inputs
+
+- Error classes
+- Human overrides
+- Repeated retries
+- Failed postconditions
+
+## Practice
+
+Turn the most common runtime failures into explicit operating rules and release checks.
diff --git a/courses/agent-ops-bootcamp/docs/en/projects/incident-drill/index.md b/courses/agent-ops-bootcamp/docs/en/projects/incident-drill/index.md
new file mode 100644
index 00000000..3dd162b8
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/projects/incident-drill/index.md
@@ -0,0 +1,7 @@
+# Incident Drill
+
+Simulate a production issue where an agent keeps retrying a task with stale context.
+
+## Deliverable
+
+Write the operator checklist your team should follow in the first ten minutes of the incident.
diff --git a/courses/agent-ops-bootcamp/docs/en/projects/index.md b/courses/agent-ops-bootcamp/docs/en/projects/index.md
new file mode 100644
index 00000000..0810eea1
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/projects/index.md
@@ -0,0 +1,3 @@
+# Labs
+
+Use these labs to pressure-test your operating model before a real release.
diff --git a/courses/agent-ops-bootcamp/docs/en/projects/release-checklist/index.md b/courses/agent-ops-bootcamp/docs/en/projects/release-checklist/index.md
new file mode 100644
index 00000000..d8bd10ad
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/projects/release-checklist/index.md
@@ -0,0 +1,8 @@
+# Release Checklist
+
+Before enabling a workflow in production, verify:
+
+- the trigger is intentional,
+- the stop conditions are explicit,
+- the logs are reviewable,
+- the fallback path is owned by a human.
diff --git a/courses/agent-ops-bootcamp/docs/en/resources/index.md b/courses/agent-ops-bootcamp/docs/en/resources/index.md
new file mode 100644
index 00000000..23ca95d9
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/resources/index.md
@@ -0,0 +1,3 @@
+# Toolkit
+
+This toolkit is the operational layer of the course: compact templates, references, and reusable docs.
diff --git a/courses/agent-ops-bootcamp/docs/en/resources/openai-advanced/index.md b/courses/agent-ops-bootcamp/docs/en/resources/openai-advanced/index.md
new file mode 100644
index 00000000..284800ed
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/resources/openai-advanced/index.md
@@ -0,0 +1,3 @@
+# Advanced Ops
+
+Use this area for deeper operational patterns once the core course flow is stable.
diff --git a/courses/agent-ops-bootcamp/docs/en/resources/reference/index.md b/courses/agent-ops-bootcamp/docs/en/resources/reference/index.md
new file mode 100644
index 00000000..552622c1
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/resources/reference/index.md
@@ -0,0 +1,3 @@
+# Reference
+
+Use this section for operating heuristics, terminology, and small checklists that support the labs.
diff --git a/courses/agent-ops-bootcamp/docs/en/resources/templates/index.md b/courses/agent-ops-bootcamp/docs/en/resources/templates/index.md
new file mode 100644
index 00000000..80b4c8f7
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/resources/templates/index.md
@@ -0,0 +1,9 @@
+# Runbooks
+
+## Minimal runbook template
+
+1. Trigger
+2. Expected outcome
+3. Failure signals
+4. Human escalation point
+5. Cleanup steps
diff --git a/courses/agent-ops-bootcamp/docs/en/skills/index.md b/courses/agent-ops-bootcamp/docs/en/skills/index.md
new file mode 100644
index 00000000..df86ceb5
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/en/skills/index.md
@@ -0,0 +1,7 @@
+# Playbooks
+
+Playbooks are compact action guides for common operational situations:
+
+- rollout review
+- runtime incident response
+- postmortem capture
diff --git a/courses/agent-ops-bootcamp/docs/index.md b/courses/agent-ops-bootcamp/docs/index.md
new file mode 100644
index 00000000..261535fd
--- /dev/null
+++ b/courses/agent-ops-bootcamp/docs/index.md
@@ -0,0 +1,14 @@
+---
+layout: page
+---
+
+<script setup>
+if (typeof window !== "undefined") {
+  const base = import.meta.env.BASE_URL || "/";
+  window.location.replace(`${base}en/`);
+}
+</script>
+
+<div style="display:flex;min-height:60vh;align-items:center;justify-content:center;">
+  <p>Loading...</p>
+</div>
diff --git a/courses/learn-harness-engineering/course.manifest.mjs b/courses/learn-harness-engineering/course.manifest.mjs
index 015d1c92..3488494b 100644
--- a/courses/learn-harness-engineering/course.manifest.mjs
+++ b/courses/learn-harness-engineering/course.manifest.mjs
@@ -6,32 +6,34 @@ const defaultHome = {
     title: "Welcome to Learn Harness Engineering",
     intro: [
       "Learn Harness Engineering is a course dedicated to the engineering of AI coding agents. We have deeply studied and synthesized the most advanced Harness Engineering theories and practices in the industry.",
-      "Through systematic environment design, state management, verification, and control systems, this course teaches you how to make agentic coding tools like Codex and Claude Code truly reliable."
+      "Through systematic environment design, state management, verification, and control systems, this course teaches you how to make agentic coding tools like Codex and Claude Code truly reliable.",
     ],
     references: [
       {
-        label: "OpenAI: Harness engineering: leveraging Codex in an agent-first world",
-        href: "https://openai.com/index/harness-engineering/"
+        label:
+          "OpenAI: Harness engineering: leveraging Codex in an agent-first world",
+        href: "https://openai.com/index/harness-engineering/",
       },
       {
         label: "Anthropic: Effective harnesses for long-running agents",
-        href: "https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents"
+        href: "https://www.anthropic.com/engineering/effective-harnesses-for-long-running-agents",
       },
       {
-        label: "Anthropic: Harness design for long-running application development",
-        href: "https://www.anthropic.com/engineering/harness-design-long-running-apps"
+        label:
+          "Anthropic: Harness design for long-running application development",
+        href: "https://www.anthropic.com/engineering/harness-design-long-running-apps",
       },
       {
         label: "Awesome Harness Engineering",
-        href: "https://github.com/walkinglabs/awesome-harness-engineering"
-      }
-    ]
+        href: "https://github.com/walkinglabs/awesome-harness-engineering",
+      },
+    ],
   },
   sections: {
     start: "Get started",
     mechanism: "The Core Mechanism of a Harness",
     learn: "What you will learn",
-    next: "Next steps"
+    next: "Next steps",
   },
   startText:
     "Choose your learning path to get started. The course is divided into theoretical lectures, hands-on projects, and a copy-ready resource library.",
@@ -39,18 +41,18 @@ const defaultHome = {
     {
       title: "Lectures",
       body: "Understand why strong models still fail and learn the theory behind effective harnesses.",
-      href: "./lectures/lecture-01-why-capable-agents-still-fail/"
+      href: "./lectures/lecture-01-why-capable-agents-still-fail/",
     },
     {
       title: "Projects",
       body: "Hands-on practice building a reliable agentic environment from scratch.",
-      href: "./projects/"
+      href: "./projects/",
     },
     {
       title: "Resource Library",
       body: "Copy-ready templates (AGENTS.md, feature_list.json) to use in your own repositories.",
-      href: "./resources/"
-    }
+      href: "./resources/",
+    },
   ],
   mechanismText:
     'A harness does not "make the model smarter"; it establishes a closed-loop working system for the model.',
@@ -75,7 +77,7 @@ const defaultHome = {
     "Maintain context across long-running, multi-session tasks.",
     "Stop agents from declaring victory too early.",
     "Verify work using full-pipeline tests and self-reflection.",
-    "Make runtime observable and debuggable."
+    "Make runtime observable and debuggable.",
   ],
   nextIntro:
     "Once you understand the core concepts, these guides help you go deeper:",
@@ -83,19 +85,19 @@ const defaultHome = {
     {
       title: "Lecture 01: Why Capable Agents Still Fail",
       description: "Start with the theory behind harness engineering.",
-      href: "./lectures/lecture-01-why-capable-agents-still-fail/"
+      href: "./lectures/lecture-01-why-capable-agents-still-fail/",
     },
     {
       title: "Project 01: Baseline vs Minimal Harness",
       description: "Walk through your first real task.",
-      href: "./projects/project-01-baseline-vs-minimal-harness/"
+      href: "./projects/project-01-baseline-vs-minimal-harness/",
     },
     {
       title: "Templates",
       description: "Grab the minimal harness pack for your own projects.",
-      href: "./resources/templates/"
-    }
-  ]
+      href: "./resources/templates/",
+    },
+  ],
 };
 
 const localeEntries = [
@@ -109,8 +111,8 @@ const localeEntries = [
       resources: "Library",
       skills: "Skills",
       resourceLibrary: "Resource Library",
-      tryHarness: "Try Harness ↗"
-    }
+      tryHarness: "Try Harness ↗",
+    },
   },
   {
     key: "zh",
@@ -130,8 +132,8 @@ const localeEntries = [
       sidebarMenu: "菜单",
       darkModeSwitch: "主题",
       lightModeSwitchTitle: "切换到浅色模式",
-      darkModeSwitchTitle: "切换到深色模式"
-    }
+      darkModeSwitchTitle: "切换到深色模式",
+    },
   },
   {
     key: "zh-TW",
@@ -151,8 +153,8 @@ const localeEntries = [
       sidebarMenu: "選單",
       darkModeSwitch: "主題",
       lightModeSwitchTitle: "切換到淺色模式",
-      darkModeSwitchTitle: "切換到深色模式"
-    }
+      darkModeSwitchTitle: "切換到深色模式",
+    },
   },
   {
     key: "ja",
@@ -173,8 +175,8 @@ const localeEntries = [
       sidebarMenu: "メニュー",
       darkModeSwitch: "テーマ",
       lightModeSwitchTitle: "ライトモードに切り替え",
-      darkModeSwitchTitle: "ダークモードに切り替え"
-    }
+      darkModeSwitchTitle: "ダークモードに切り替え",
+    },
   },
   {
     key: "es",
@@ -195,8 +197,8 @@ const localeEntries = [
       sidebarMenu: "Menú",
       darkModeSwitch: "Tema",
       lightModeSwitchTitle: "Cambiar a tema claro",
-      darkModeSwitchTitle: "Cambiar a tema oscuro"
-    }
+      darkModeSwitchTitle: "Cambiar a tema oscuro",
+    },
   },
   {
     key: "fr",
@@ -217,8 +219,8 @@ const localeEntries = [
       sidebarMenu: "Menu",
       darkModeSwitch: "Thème",
       lightModeSwitchTitle: "Passer au thème clair",
-      darkModeSwitchTitle: "Passer au thème sombre"
-    }
+      darkModeSwitchTitle: "Passer au thème sombre",
+    },
   },
   {
     key: "de",
@@ -239,8 +241,8 @@ const localeEntries = [
       sidebarMenu: "Menü",
       darkModeSwitch: "Theme",
       lightModeSwitchTitle: "Zum hellen Theme wechseln",
-      darkModeSwitchTitle: "Zum dunklen Theme wechseln"
-    }
+      darkModeSwitchTitle: "Zum dunklen Theme wechseln",
+    },
   },
   {
     key: "ar",
@@ -261,8 +263,8 @@ const localeEntries = [
       sidebarMenu: "القائمة",
       darkModeSwitch: "السمة",
       lightModeSwitchTitle: "التبديل إلى السمة الفاتحة",
-      darkModeSwitchTitle: "التبديل إلى السمة الداكنة"
-    }
+      darkModeSwitchTitle: "التبديل إلى السمة الداكنة",
+    },
   },
   {
     key: "vi",
@@ -282,8 +284,8 @@ const localeEntries = [
       sidebarMenu: "Menu",
       darkModeSwitch: "Giao diện",
       lightModeSwitchTitle: "Chuyển sang chế độ sáng",
-      darkModeSwitchTitle: "Chuyển sang chế độ tối"
-    }
+      darkModeSwitchTitle: "Chuyển sang chế độ tối",
+    },
   },
   {
     key: "ko",
@@ -304,8 +306,8 @@ const localeEntries = [
       sidebarMenu: "메뉴",
       darkModeSwitch: "테마",
       lightModeSwitchTitle: "라이트 모드로 전환",
-      darkModeSwitchTitle: "다크 모드로 전환"
-    }
+      darkModeSwitchTitle: "다크 모드로 전환",
+    },
   },
   {
     key: "uz",
@@ -326,8 +328,8 @@ const localeEntries = [
       sidebarMenu: "Menyu",
       darkModeSwitch: "Mavzu",
       lightModeSwitchTitle: "Yorugʻ rejimga oʻtish",
-      darkModeSwitchTitle: "Qorongʻi rejimga oʻtish"
-    }
+      darkModeSwitchTitle: "Qorongʻi rejimga oʻtish",
+    },
   },
   {
     key: "ru",
@@ -348,78 +350,186 @@ const localeEntries = [
       sidebarMenu: "Меню",
       darkModeSwitch: "Тема",
       lightModeSwitchTitle: "Включить светлую тему",
-      darkModeSwitchTitle: "Включить тёмную тему"
-    }
-  }
+      darkModeSwitchTitle: "Включить тёмную тему",
+    },
+  },
 ];
 
 const sourceItemsByLocale = {
   en: {
     lectures: [
       { text: "Welcome", link: "/en/" },
-      { text: "Why Capable Agents Still Fail", link: "/en/lectures/lecture-01-why-capable-agents-still-fail/" },
-      { text: "What a Harness Actually Is", link: "/en/lectures/lecture-02-what-a-harness-actually-is/" },
-      { text: "Why the Repository Must Become the System of Record", link: "/en/lectures/lecture-03-why-the-repository-must-become-the-system-of-record/" },
-      { text: "Why One Giant Instruction File Fails", link: "/en/lectures/lecture-04-why-one-giant-instruction-file-fails/" },
-      { text: "Why Long-Running Tasks Lose Continuity", link: "/en/lectures/lecture-05-why-long-running-tasks-lose-continuity/" },
-      { text: "Why Initialization Needs Its Own Phase", link: "/en/lectures/lecture-06-why-initialization-needs-its-own-phase/" },
-      { text: "Why Agents Overreach and Under-Finish", link: "/en/lectures/lecture-07-why-agents-overreach-and-under-finish/" },
-      { text: "Why Feature Lists Are Harness Primitives", link: "/en/lectures/lecture-08-why-feature-lists-are-harness-primitives/" },
-      { text: "Why Agents Declare Victory Too Early", link: "/en/lectures/lecture-09-why-agents-declare-victory-too-early/" },
-      { text: "Why End-to-End Testing Changes Results", link: "/en/lectures/lecture-10-why-end-to-end-testing-changes-results/" },
-      { text: "Why Observability Belongs Inside the Harness", link: "/en/lectures/lecture-11-why-observability-belongs-inside-the-harness/" },
-      { text: "Why Every Session Must Leave a Clean State", link: "/en/lectures/lecture-12-why-every-session-must-leave-a-clean-state/" }
+      {
+        text: "Why Capable Agents Still Fail",
+        link: "/en/lectures/lecture-01-why-capable-agents-still-fail/",
+      },
+      {
+        text: "What a Harness Actually Is",
+        link: "/en/lectures/lecture-02-what-a-harness-actually-is/",
+      },
+      {
+        text: "Why the Repository Must Become the System of Record",
+        link: "/en/lectures/lecture-03-why-the-repository-must-become-the-system-of-record/",
+      },
+      {
+        text: "Why One Giant Instruction File Fails",
+        link: "/en/lectures/lecture-04-why-one-giant-instruction-file-fails/",
+      },
+      {
+        text: "Why Long-Running Tasks Lose Continuity",
+        link: "/en/lectures/lecture-05-why-long-running-tasks-lose-continuity/",
+      },
+      {
+        text: "Why Initialization Needs Its Own Phase",
+        link: "/en/lectures/lecture-06-why-initialization-needs-its-own-phase/",
+      },
+      {
+        text: "Why Agents Overreach and Under-Finish",
+        link: "/en/lectures/lecture-07-why-agents-overreach-and-under-finish/",
+      },
+      {
+        text: "Why Feature Lists Are Harness Primitives",
+        link: "/en/lectures/lecture-08-why-feature-lists-are-harness-primitives/",
+      },
+      {
+        text: "Why Agents Declare Victory Too Early",
+        link: "/en/lectures/lecture-09-why-agents-declare-victory-too-early/",
+      },
+      {
+        text: "Why End-to-End Testing Changes Results",
+        link: "/en/lectures/lecture-10-why-end-to-end-testing-changes-results/",
+      },
+      {
+        text: "Why Observability Belongs Inside the Harness",
+        link: "/en/lectures/lecture-11-why-observability-belongs-inside-the-harness/",
+      },
+      {
+        text: "Why Every Session Must Leave a Clean State",
+        link: "/en/lectures/lecture-12-why-every-session-must-leave-a-clean-state/",
+      },
     ],
     projects: [
       { text: "Welcome", link: "/en/projects/" },
-      { text: "Prompt-Only vs. Rules-First", link: "/en/projects/project-01-baseline-vs-minimal-harness/" },
-      { text: "Agent-Readable Workspace", link: "/en/projects/project-02-agent-readable-workspace/" },
-      { text: "Multi-Session Continuity", link: "/en/projects/project-03-multi-session-continuity/" },
-      { text: "Runtime Feedback and Scope Control", link: "/en/projects/project-04-incremental-indexing/" },
-      { text: "Self-Verification and Role Separation", link: "/en/projects/project-05-grounded-qa-verification/" },
-      { text: "Complete Harness (Capstone)", link: "/en/projects/project-06-runtime-observability-and-debugging/" }
+      {
+        text: "Prompt-Only vs. Rules-First",
+        link: "/en/projects/project-01-baseline-vs-minimal-harness/",
+      },
+      {
+        text: "Agent-Readable Workspace",
+        link: "/en/projects/project-02-agent-readable-workspace/",
+      },
+      {
+        text: "Multi-Session Continuity",
+        link: "/en/projects/project-03-multi-session-continuity/",
+      },
+      {
+        text: "Runtime Feedback and Scope Control",
+        link: "/en/projects/project-04-incremental-indexing/",
+      },
+      {
+        text: "Self-Verification and Role Separation",
+        link: "/en/projects/project-05-grounded-qa-verification/",
+      },
+      {
+        text: "Complete Harness (Capstone)",
+        link: "/en/projects/project-06-runtime-observability-and-debugging/",
+      },
     ],
     resources: [
       { text: "Overview", link: "/en/resources/" },
       { text: "English Templates", link: "/en/resources/templates/" },
       { text: "English Reference", link: "/en/resources/reference/" },
-      { text: "Advanced Pack", link: "/en/resources/openai-advanced/" }
+      { text: "Advanced Pack", link: "/en/resources/openai-advanced/" },
     ],
-    skills: [{ text: "Skills Overview", link: "/en/skills/" }]
+    skills: [{ text: "Skills Overview", link: "/en/skills/" }],
   },
   ko: {
     lectures: [
       { text: "환영합니다", link: "/ko/" },
-      { text: "유능한 에이전트가 여전히 실패하는 이유", link: "/ko/lectures/lecture-01-why-capable-agents-still-fail/" },
-      { text: "하네스란 무엇인가", link: "/ko/lectures/lecture-02-what-a-harness-actually-is/" },
-      { text: "저장소가 시스템 오브 레코드(SoR)가 되어야 하는 이유", link: "/ko/lectures/lecture-03-why-the-repository-must-become-the-system-of-record/" },
-      { text: "거대한 단일 지시 파일이 실패하는 이유", link: "/ko/lectures/lecture-04-why-one-giant-instruction-file-fails/" },
-      { text: "장기 작업이 연속성을 잃는 이유", link: "/ko/lectures/lecture-05-why-long-running-tasks-lose-continuity/" },
-      { text: "초기화가 별도 단계여야 하는 이유", link: "/ko/lectures/lecture-06-why-initialization-needs-its-own-phase/" },
-      { text: "에이전트가 과도하게 손대고 끝맺지 못하는 이유", link: "/ko/lectures/lecture-07-why-agents-overreach-and-under-finish/" },
-      { text: "기능 목록이 하네스의 기본 단위인 이유", link: "/ko/lectures/lecture-08-why-feature-lists-are-harness-primitives/" },
-      { text: "에이전트가 너무 일찍 완료를 선언하는 이유", link: "/ko/lectures/lecture-09-why-agents-declare-victory-too-early/" },
-      { text: "엔드투엔드 테스트가 결과를 바꾸는 이유", link: "/ko/lectures/lecture-10-why-end-to-end-testing-changes-results/" },
-      { text: "관측 가능성이 하네스 안에 있어야 하는 이유", link: "/ko/lectures/lecture-11-why-observability-belongs-inside-the-harness/" },
-      { text: "모든 세션이 클린 상태로 끝나야 하는 이유", link: "/ko/lectures/lecture-12-why-every-session-must-leave-a-clean-state/" }
+      {
+        text: "유능한 에이전트가 여전히 실패하는 이유",
+        link: "/ko/lectures/lecture-01-why-capable-agents-still-fail/",
+      },
+      {
+        text: "하네스란 무엇인가",
+        link: "/ko/lectures/lecture-02-what-a-harness-actually-is/",
+      },
+      {
+        text: "저장소가 시스템 오브 레코드(SoR)가 되어야 하는 이유",
+        link: "/ko/lectures/lecture-03-why-the-repository-must-become-the-system-of-record/",
+      },
+      {
+        text: "거대한 단일 지시 파일이 실패하는 이유",
+        link: "/ko/lectures/lecture-04-why-one-giant-instruction-file-fails/",
+      },
+      {
+        text: "장기 작업이 연속성을 잃는 이유",
+        link: "/ko/lectures/lecture-05-why-long-running-tasks-lose-continuity/",
+      },
+      {
+        text: "초기화가 별도 단계여야 하는 이유",
+        link: "/ko/lectures/lecture-06-why-initialization-needs-its-own-phase/",
+      },
+      {
+        text: "에이전트가 과도하게 손대고 끝맺지 못하는 이유",
+        link: "/ko/lectures/lecture-07-why-agents-overreach-and-under-finish/",
+      },
+      {
+        text: "기능 목록이 하네스의 기본 단위인 이유",
+        link: "/ko/lectures/lecture-08-why-feature-lists-are-harness-primitives/",
+      },
+      {
+        text: "에이전트가 너무 일찍 완료를 선언하는 이유",
+        link: "/ko/lectures/lecture-09-why-agents-declare-victory-too-early/",
+      },
+      {
+        text: "엔드투엔드 테스트가 결과를 바꾸는 이유",
+        link: "/ko/lectures/lecture-10-why-end-to-end-testing-changes-results/",
+      },
+      {
+        text: "관측 가능성이 하네스 안에 있어야 하는 이유",
+        link: "/ko/lectures/lecture-11-why-observability-belongs-inside-the-harness/",
+      },
+      {
+        text: "모든 세션이 클린 상태로 끝나야 하는 이유",
+        link: "/ko/lectures/lecture-12-why-every-session-must-leave-a-clean-state/",
+      },
     ],
     projects: [
       { text: "환영합니다", link: "/ko/projects/" },
-      { text: "프롬프트 단독 vs 규칙 우선", link: "/ko/projects/project-01-baseline-vs-minimal-harness/" },
-      { text: "에이전트가 읽을 수 있는 작업 공간", link: "/ko/projects/project-02-agent-readable-workspace/" },
-      { text: "다중 세션 연속성", link: "/ko/projects/project-03-multi-session-continuity/" },
-      { text: "런타임 피드백과 범위 제어", link: "/ko/projects/project-04-incremental-indexing/" },
-      { text: "자기 검증과 역할 분리", link: "/ko/projects/project-05-grounded-qa-verification/" },
-      { text: "완성형 하네스(캡스톤)", link: "/ko/projects/project-06-runtime-observability-and-debugging/" }
+      {
+        text: "프롬프트 단독 vs 규칙 우선",
+        link: "/ko/projects/project-01-baseline-vs-minimal-harness/",
+      },
+      {
+        text: "에이전트가 읽을 수 있는 작업 공간",
+        link: "/ko/projects/project-02-agent-readable-workspace/",
+      },
+      {
+        text: "다중 세션 연속성",
+        link: "/ko/projects/project-03-multi-session-continuity/",
+      },
+      {
+        text: "런타임 피드백과 범위 제어",
+        link: "/ko/projects/project-04-incremental-indexing/",
+      },
+      {
+        text: "자기 검증과 역할 분리",
+        link: "/ko/projects/project-05-grounded-qa-verification/",
+      },
+      {
+        text: "완성형 하네스(캡스톤)",
+        link: "/ko/projects/project-06-runtime-observability-and-debugging/",
+      },
     ],
     resources: [
       { text: "리소스 모음 개요", link: "/ko/resources/" },
       { text: "한국어 템플릿", link: "/ko/resources/templates/" },
       { text: "한국어 레퍼런스", link: "/ko/resources/reference/" },
-      { text: "고급 리소스 팩", link: "/ko/resources/openai-advanced/" }
+      { text: "고급 리소스 팩", link: "/ko/resources/openai-advanced/" },
     ],
-    skills: [{ text: "스킬 개요", link: "/ko/skills/" }]
-  }
+    skills: [{ text: "스킬 개요", link: "/ko/skills/" }],
+  },
 };
 
 const homeByLocale = {
@@ -430,15 +540,15 @@ const homeByLocale = {
       title: "Learn Harness Engineering에 오신 것을 환영합니다",
       intro: [
         "Learn Harness Engineering은 AI 코딩 에이전트의 엔지니어링에 집중하는 강의입니다. 업계에서 가장 앞선 하네스 엔지니어링 이론과 실천을 깊이 정리했습니다.",
-        "체계적인 환경 설계, 상태 관리, 검증, 제어 시스템을 통해 Codex와 Claude Code 같은 도구를 실제로 신뢰할 수 있게 만드는 방법을 다룹니다."
+        "체계적인 환경 설계, 상태 관리, 검증, 제어 시스템을 통해 Codex와 Claude Code 같은 도구를 실제로 신뢰할 수 있게 만드는 방법을 다룹니다.",
       ],
-      references: defaultHome.hero.references
+      references: defaultHome.hero.references,
     },
     sections: {
       start: "시작하기",
       mechanism: "하네스의 핵심 메커니즘",
       learn: "이 강의에서 배우는 것",
-      next: "다음 단계"
+      next: "다음 단계",
     },
     startText:
       "학습 경로를 선택해 시작하세요. 강의는 이론 강의, 실습 프로젝트, 즉시 사용 가능한 리소스 모음으로 구성됩니다.",
@@ -446,18 +556,18 @@ const homeByLocale = {
       {
         title: "강의(Lectures)",
         body: "강력한 모델이 왜 여전히 실패하는지 이해하고, 효과적인 하네스의 이론을 배웁니다.",
-        href: "./lectures/lecture-01-why-capable-agents-still-fail/"
+        href: "./lectures/lecture-01-why-capable-agents-still-fail/",
       },
       {
         title: "프로젝트(Projects)",
         body: "믿을 수 있는 에이전트 환경을 처음부터 직접 만들어 보는 실습입니다.",
-        href: "./projects/"
+        href: "./projects/",
       },
       {
         title: "리소스 모음(Resource Library)",
         body: "여러분의 저장소에서 바로 쓸 수 있는 복사용 템플릿입니다.",
-        href: "./resources/"
-      }
+        href: "./resources/",
+      },
     ],
     mechanismText:
       '하네스는 모델을 "더 똑똑하게" 만드는 것이 아니라, 모델을 위한 닫힌 루프 작업 시스템을 만듭니다.',
@@ -466,7 +576,7 @@ const homeByLocale = {
       "장시간·다중 세션 작업에서도 컨텍스트를 유지합니다.",
       "에이전트가 너무 빨리 완료를 선언하지 못하게 합니다.",
       "전체 파이프라인 테스트와 자기 점검으로 결과물을 검증합니다.",
-      "런타임을 관측·디버깅 가능하게 만듭니다."
+      "런타임을 관측·디버깅 가능하게 만듭니다.",
     ],
     nextIntro:
       "핵심 개념이 익숙해졌다면, 다음 자료로 한 걸음 더 들어가 보세요.",
@@ -474,20 +584,20 @@ const homeByLocale = {
       {
         title: "강의 01: 유능한 에이전트가 여전히 실패하는 이유",
         description: "하네스 엔지니어링의 이론적 출발점입니다.",
-        href: "./lectures/lecture-01-why-capable-agents-still-fail/"
+        href: "./lectures/lecture-01-why-capable-agents-still-fail/",
       },
       {
         title: "프로젝트 01: 베이스라인 vs 미니멀 하네스",
         description: "첫 실제 과제를 처음부터 진행해 봅니다.",
-        href: "./projects/project-01-baseline-vs-minimal-harness/"
+        href: "./projects/project-01-baseline-vs-minimal-harness/",
       },
       {
         title: "템플릿(Templates)",
         description: "미니멀 하네스 팩을 자신의 프로젝트에 바로 적용해 보세요.",
-        href: "./resources/templates/"
-      }
-    ]
-  }
+        href: "./resources/templates/",
+      },
+    ],
+  },
 };
 
 const courseManifest = {
@@ -496,32 +606,30 @@ const courseManifest = {
     description:
       "A project-based course on designing the environments, state, verification, and control systems that make Codex and Claude Code reliable.",
     base: "/course-builder/",
-    repoTreeUrl: "https://github.com/puppe1990/course-builder/tree/main"
+    repoTreeUrl: "https://github.com/puppe1990/course-builder/tree/main",
   },
   brand: {
-    logo: brandLogo
+    logo: brandLogo,
   },
   theme: {
     fontStylesheets: [
-      "https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Instrument+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap"
+      "https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600&family=Instrument+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap",
     ],
     typography: {
-      body:
-        "'Instrument Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif",
+      body: "'Instrument Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif",
       heading:
         "'Fraunces', ui-serif, Georgia, Cambria, 'Times New Roman', Times, serif",
-      mono:
-        "'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace",
-      mermaid: "'Instrument Sans', sans-serif"
+      mono: "'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace",
+      mermaid: "'Instrument Sans', sans-serif",
     },
     layout: {
       maxWidth: "1376px",
       sidebarWidth: "296px",
-      cardRadius: "12px"
+      cardRadius: "12px",
     },
     effects: {
       featureShadow: "0 18px 48px rgba(217, 92, 65, 0.12)",
-      featureShadowDark: "0 18px 48px rgba(0, 0, 0, 0.35)"
+      featureShadowDark: "0 18px 48px rgba(0, 0, 0, 0.35)",
     },
     colors: {
       light: {
@@ -538,7 +646,7 @@ const courseManifest = {
         brandSoft: "rgba(217, 92, 65, 0.1)",
         divider: "rgba(0, 0, 0, 0.08)",
         sidebarBg: "#F4F3EE",
-        navBg: "#FAF9F5"
+        navBg: "#FAF9F5",
       },
       dark: {
         bg: "#1A1A1A",
@@ -554,13 +662,13 @@ const courseManifest = {
         brandSoft: "rgba(224, 122, 100, 0.15)",
         divider: "rgba(255, 255, 255, 0.1)",
         sidebarBg: "#141414",
-        navBg: "#1A1A1A"
-      }
-    }
+        navBg: "#1A1A1A",
+      },
+    },
   },
   locales: localeEntries,
   curriculum: sourceItemsByLocale,
-  homeByLocale
+  homeByLocale,
 };
 
 export default courseManifest;
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rename from docs/zh/resources/templates/session-handoff.md
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diff --git a/docs/zh/skills/index.md b/courses/learn-harness-engineering/docs/zh/skills/index.md
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diff --git a/docs/.vitepress/active-course.mjs b/docs/.vitepress/active-course.mjs
index 2d982ea1..f2153c33 100644
--- a/docs/.vitepress/active-course.mjs
+++ b/docs/.vitepress/active-course.mjs
@@ -1,5 +1,9 @@
 import courseManifest from "../../courses/learn-harness-engineering/course.manifest.mjs";
 
 export const ACTIVE_COURSE_SLUG = "learn-harness-engineering";
+export const ACTIVE_COURSE_CONTENT_DIR =
+  "../courses/learn-harness-engineering/docs";
+export const ACTIVE_COURSE_REPO_CONTENT_PREFIX =
+  "courses/learn-harness-engineering/docs";
 
 export default courseManifest;
diff --git a/docs/.vitepress/config.mts b/docs/.vitepress/config.mts
index bf8afd89..4c59fbc6 100644
--- a/docs/.vitepress/config.mts
+++ b/docs/.vitepress/config.mts
@@ -4,8 +4,12 @@ import { withMermaid } from "vitepress-plugin-mermaid";
 import courseConfig from "./course.config.mjs";
 import {
   buildFontStylesheetLinks,
-  buildMermaidThemeVariables
+  buildMermaidThemeVariables,
 } from "./course-branding.mjs";
+import {
+  ACTIVE_COURSE_CONTENT_DIR,
+  ACTIVE_COURSE_REPO_CONTENT_PREFIX,
+} from "./active-course.mjs";
 import { getLocaleSourceItems } from "./course-curriculum.mjs";
 import { getLocaleEntries } from "./course-locales.mjs";
 import { createLocaleDefinition } from "./course-navigation.mjs";
@@ -32,13 +36,15 @@ const locales = Object.fromEntries(
       lang: entry.lang,
       sourceItems: getLocaleSourceItems(entry.key),
       labels: entry.labels,
-      repoTreeUrl: githubRepoTreeLink
-    })
-  ])
+      repoTreeUrl: githubRepoTreeLink,
+      repoContentPrefix: ACTIVE_COURSE_REPO_CONTENT_PREFIX,
+    }),
+  ]),
 );
 
 export default withMermaid(
   defineConfig({
+    srcDir: ACTIVE_COURSE_CONTENT_DIR,
     base: docsBase,
     title: courseConfig.site.title,
     description: courseConfig.site.description,
@@ -47,20 +53,20 @@ export default withMermaid(
     ignoreDeadLinks: true,
     head: [
       ...fontStylesheetLinks,
-      ["link", { rel: "icon", type: "image/svg+xml", href: brandLogo }]
+      ["link", { rel: "icon", type: "image/svg+xml", href: brandLogo }],
     ],
     themeConfig: {
       logo: brandLogo,
       search: {
-        provider: "local"
+        provider: "local",
       },
-      socialLinks: [{ icon: "github", link: githubRepoTreeLink }]
+      socialLinks: [{ icon: "github", link: githubRepoTreeLink }],
     },
     markdown: {
       theme: {
         light: "github-light",
-        dark: "github-dark"
-      }
+        dark: "github-dark",
+      },
     },
     mermaid: {
       theme: "base",
@@ -68,9 +74,9 @@ export default withMermaid(
       flowchart: {
         nodeSpacing: 40,
         rankSpacing: 56,
-        padding: 12
-      }
+        padding: 12,
+      },
     },
-    locales
-  })
+    locales,
+  }),
 );
diff --git a/docs/.vitepress/course-branding.mjs b/docs/.vitepress/course-branding.mjs
index b5546221..8f93f6aa 100644
--- a/docs/.vitepress/course-branding.mjs
+++ b/docs/.vitepress/course-branding.mjs
@@ -3,8 +3,8 @@ export function buildFontStylesheetLinks(courseConfig) {
     "link",
     {
       rel: "stylesheet",
-      href
-    }
+      href,
+    },
   ]);
 }
 
@@ -17,7 +17,7 @@ export function buildMermaidThemeVariables(courseConfig) {
     primaryTextColor: light.text1,
     lineColor: light.text3,
     fontFamily: courseConfig.theme.typography.mermaid,
-    fontSize: "18px"
+    fontSize: "18px",
   };
 }
 
@@ -60,6 +60,6 @@ export function buildCourseCssTokens(courseConfig) {
     "--course-dark-brand-soft": colors.dark.brandSoft,
     "--course-dark-divider": colors.dark.divider,
     "--course-dark-sidebar-bg": colors.dark.sidebarBg,
-    "--course-dark-nav-bg": colors.dark.navBg
+    "--course-dark-nav-bg": colors.dark.navBg,
   };
 }
diff --git a/docs/.vitepress/course-navigation.mjs b/docs/.vitepress/course-navigation.mjs
index 2fc56804..5c23b86d 100644
--- a/docs/.vitepress/course-navigation.mjs
+++ b/docs/.vitepress/course-navigation.mjs
@@ -3,7 +3,7 @@ const LOCALE_PREFIX_PATTERN = /^\/(en|zh|vi|ko|uz|ru|ja|es|fr|de|ar|zh-TW)\//;
 export function relinkItems(items, locale) {
   return items.map((item) => ({
     ...item,
-    link: item.link.replace(LOCALE_PREFIX_PATTERN, `/${locale}/`)
+    link: item.link.replace(LOCALE_PREFIX_PATTERN, `/${locale}/`),
   }));
 }
 
@@ -11,7 +11,8 @@ export function buildLocaleThemeConfig({
   locale,
   sourceItems,
   labels,
-  repoTreeUrl
+  repoTreeUrl,
+  repoContentPrefix = "docs",
 }) {
   const lectures = relinkItems(sourceItems.lectures, locale);
   const projects = relinkItems(sourceItems.projects, locale);
@@ -20,40 +21,59 @@ export function buildLocaleThemeConfig({
 
   return {
     nav: [
-      { text: labels.lectures, link: lectures[1].link, activeMatch: `^/${locale}/(lectures/.*)?$` },
-      { text: labels.projects, link: projects[0].link, activeMatch: `^/${locale}/projects/` },
-      { text: labels.resources, link: `/${locale}/resources/`, activeMatch: `^/${locale}/resources/` },
-      { text: labels.skills, link: `/${locale}/skills/`, activeMatch: `^/${locale}/skills/` },
+      {
+        text: labels.lectures,
+        link: lectures[1].link,
+        activeMatch: `^/${locale}/(lectures/.*)?$`,
+      },
+      {
+        text: labels.projects,
+        link: projects[0].link,
+        activeMatch: `^/${locale}/projects/`,
+      },
+      {
+        text: labels.resources,
+        link: `/${locale}/resources/`,
+        activeMatch: `^/${locale}/resources/`,
+      },
+      {
+        text: labels.skills,
+        link: `/${locale}/skills/`,
+        activeMatch: `^/${locale}/skills/`,
+      },
       {
         text: labels.tryHarness,
-        link: `${repoTreeUrl.replace(/\/tree\/main$/, "/blob/main")}/docs/${locale}/resources/templates/index.md`,
+        link: `${repoTreeUrl.replace(/\/tree\/main$/, "/blob/main")}/${repoContentPrefix}/${locale}/resources/templates/index.md`,
         target: "_blank",
-        rel: "noopener noreferrer"
-      }
+        rel: "noopener noreferrer",
+      },
     ],
     sidebar: {
       [`/${locale}/projects/`]: [{ text: labels.projects, items: projects }],
-      [`/${locale}/resources/`]: [{ text: labels.resourceLibrary, items: resources }],
+      [`/${locale}/resources/`]: [
+        { text: labels.resourceLibrary, items: resources },
+      ],
       [`/${locale}/skills/`]: [{ text: labels.skills, items: skills }],
-      [`/${locale}/`]: [{ text: labels.lectures, items: lectures }]
+      [`/${locale}/`]: [{ text: labels.lectures, items: lectures }],
     },
     outline: {
       level: [2, 3],
-      ...(labels.outline ? { label: labels.outline } : {})
+      ...(labels.outline ? { label: labels.outline } : {}),
     },
     docFooter: {
       prev: labels.prev || "Previous",
-      next: labels.next || "Next"
+      next: labels.next || "Next",
     },
     lastUpdated: {
-      text: labels.lastUpdated || "Last updated"
+      text: labels.lastUpdated || "Last updated",
     },
     returnToTopLabel: labels.returnToTop || "Return to top",
     sidebarMenuLabel: labels.sidebarMenu || "Menu",
     darkModeSwitchLabel: labels.darkModeSwitch || "Theme",
-    lightModeSwitchTitle: labels.lightModeSwitchTitle || "Switch to light theme",
+    lightModeSwitchTitle:
+      labels.lightModeSwitchTitle || "Switch to light theme",
     darkModeSwitchTitle: labels.darkModeSwitchTitle || "Switch to dark theme",
-    socialLinks: [{ icon: "github", link: repoTreeUrl }]
+    socialLinks: [{ icon: "github", link: repoTreeUrl }],
   };
 }
 
@@ -63,7 +83,8 @@ export function createLocaleDefinition({
   lang,
   sourceItems,
   labels,
-  repoTreeUrl
+  repoTreeUrl,
+  repoContentPrefix,
 }) {
   return {
     label,
@@ -73,7 +94,8 @@ export function createLocaleDefinition({
       locale,
       sourceItems,
       labels,
-      repoTreeUrl
-    })
+      repoTreeUrl,
+      repoContentPrefix,
+    }),
   };
 }
diff --git a/docs/.vitepress/course.config.mjs b/docs/.vitepress/course.config.mjs
index b26df37d..649bb390 100644
--- a/docs/.vitepress/course.config.mjs
+++ b/docs/.vitepress/course.config.mjs
@@ -3,5 +3,5 @@ import courseManifest from "./course.manifest.mjs";
 export default {
   site: courseManifest.site,
   brand: courseManifest.brand,
-  theme: courseManifest.theme
+  theme: courseManifest.theme,
 };
diff --git a/docs/.vitepress/theme/components/CourseHome.vue b/docs/.vitepress/theme/components/CourseHome.vue
index adecb32a..71433d92 100644
--- a/docs/.vitepress/theme/components/CourseHome.vue
+++ b/docs/.vitepress/theme/components/CourseHome.vue
@@ -34,7 +34,12 @@ const content = computed(() => getCourseHome(locale.value));
     <p>{{ content.startText }}</p>
 
     <div class="card-grid">
-      <a v-for="card in content.cards" :key="card.href" :href="card.href" class="card">
+      <a
+        v-for="card in content.cards"
+        :key="card.href"
+        :href="card.href"
+        class="card"
+      >
         <h3>{{ card.title }}</h3>
         <p>{{ card.body }}</p>
       </a>
@@ -55,7 +60,8 @@ const content = computed(() => getCourseHome(locale.value));
     <p>{{ content.nextIntro }}</p>
     <ul class="index-list">
       <li v-for="step in content.nextSteps" :key="step.href">
-        <a :href="step.href">{{ step.title }}</a>: {{ step.description }}
+        <a :href="step.href">{{ step.title }}</a
+        >: {{ step.description }}
       </li>
     </ul>
   </div>
diff --git a/docs/.vitepress/theme/index.js b/docs/.vitepress/theme/index.js
index 3bfacc2d..2999d9b8 100644
--- a/docs/.vitepress/theme/index.js
+++ b/docs/.vitepress/theme/index.js
@@ -1,95 +1,97 @@
-import DefaultTheme from 'vitepress/theme'
-import courseConfig from '../course.config.mjs'
-import { buildCourseCssTokens } from '../course-branding.mjs'
-import CourseHome from './components/CourseHome.vue'
-import './style.css'
-
-let rootEnglishLabel = 'English'
-let mermaidViewer
-let mermaidViewerBody
-let mermaidViewerStage
-let mermaidObserver
-let mermaidViewerUrl
-let mermaidViewerImage
-let mermaidViewerNaturalWidth = 0
-let mermaidViewerNaturalHeight = 0
-let mermaidViewerFitScale = 1
-let mermaidViewerScale = 1
+import DefaultTheme from "vitepress/theme";
+import courseConfig from "../course.config.mjs";
+import { buildCourseCssTokens } from "../course-branding.mjs";
+import CourseHome from "./components/CourseHome.vue";
+import "./style.css";
+
+let rootEnglishLabel = "English";
+let mermaidViewer;
+let mermaidViewerBody;
+let mermaidViewerStage;
+let mermaidObserver;
+let mermaidViewerUrl;
+let mermaidViewerNaturalWidth = 0;
+let mermaidViewerNaturalHeight = 0;
+let mermaidViewerFitScale = 1;
+let mermaidViewerScale = 1;
 
 function applyCourseBranding() {
-  if (typeof document === 'undefined') return
+  if (typeof document === "undefined") return;
 
-  const root = document.documentElement
-  const tokens = buildCourseCssTokens(courseConfig)
+  const root = document.documentElement;
+  const tokens = buildCourseCssTokens(courseConfig);
 
   for (const [name, value] of Object.entries(tokens)) {
-    root.style.setProperty(name, value)
+    root.style.setProperty(name, value);
   }
 }
 
 function dedupeLocaleMenuLinks() {
-  if (typeof document === 'undefined') return
+  if (typeof document === "undefined") return;
 
   const containers = document.querySelectorAll(
-    '.VPNavBarTranslations .items, .VPNavBarExtra .group.translations, .VPNavScreenTranslations .list'
-  )
+    ".VPNavBarTranslations .items, .VPNavBarExtra .group.translations, .VPNavScreenTranslations .list",
+  );
 
   for (const container of containers) {
-    const seen = new Set()
-    const links = container.querySelectorAll('a[href]')
+    const seen = new Set();
+    const links = container.querySelectorAll("a[href]");
 
     for (const link of links) {
-      const label = link.textContent?.trim() || ''
-      const href = link.getAttribute('href') || ''
-      const key = `${label}::${href}`
+      const label = link.textContent?.trim() || "";
+      const href = link.getAttribute("href") || "";
+      const key = `${label}::${href}`;
 
       if (seen.has(key)) {
-        const removable = link.closest('.VPMenuLink, .item')
-        removable?.remove()
-        continue
+        const removable = link.closest(".VPMenuLink, .item");
+        removable?.remove();
+        continue;
       }
 
-      seen.add(key)
+      seen.add(key);
     }
   }
 }
 
 function queueLocaleMenuDedupe() {
-  if (typeof window === 'undefined') return
+  if (typeof window === "undefined") return;
   window.requestAnimationFrame(() => {
     window.requestAnimationFrame(() => {
-      dedupeLocaleMenuLinks()
-    })
-  })
+      dedupeLocaleMenuLinks();
+    });
+  });
 }
 
-function syncRootLocaleLabel(siteData, href = '') {
-  const locales = siteData.value?.locales
-  if (!locales?.root || !locales?.zh) return
+function syncRootLocaleLabel(siteData, href = "") {
+  const locales = siteData.value?.locales;
+  if (!locales?.root || !locales?.zh) return;
 
   if (locales.root.label && locales.root.label !== locales.zh.label) {
-    rootEnglishLabel = locales.root.label
+    rootEnglishLabel = locales.root.label;
   }
 
   if (locales.en?.label) {
-    rootEnglishLabel = locales.en.label
+    rootEnglishLabel = locales.en.label;
   }
 
-  const base = siteData.value.base || '/'
-  const normalized = href || (typeof window !== 'undefined' ? window.location.pathname : '')
+  const base = siteData.value.base || "/";
+  const normalized =
+    href || (typeof window !== "undefined" ? window.location.pathname : "");
   const relative = normalized.startsWith(base)
     ? normalized.slice(base.length - 1)
-    : normalized
+    : normalized;
 
-  locales.root.label = relative.startsWith('/zh/') ? locales.zh.label : rootEnglishLabel
+  locales.root.label = relative.startsWith("/zh/")
+    ? locales.zh.label
+    : rootEnglishLabel;
 }
 
 function ensureMermaidViewer() {
-  if (typeof document === 'undefined') return
-  if (mermaidViewer && mermaidViewerBody && mermaidViewerStage) return
+  if (typeof document === "undefined") return;
+  if (mermaidViewer && mermaidViewerBody && mermaidViewerStage) return;
 
-  mermaidViewer = document.createElement('div')
-  mermaidViewer.className = 'mermaid-viewer'
+  mermaidViewer = document.createElement("div");
+  mermaidViewer.className = "mermaid-viewer";
   mermaidViewer.innerHTML = `
     <div class="mermaid-viewer__backdrop" data-mermaid-close="true"></div>
     <div class="mermaid-viewer__panel" role="dialog" aria-modal="true" aria-label="Expanded Mermaid diagram">
@@ -103,244 +105,288 @@ function ensureMermaidViewer() {
         <div class="mermaid-viewer__stage"></div>
       </div>
     </div>
-  `
+  `;
 
-  mermaidViewerBody = mermaidViewer.querySelector('.mermaid-viewer__body')
-  mermaidViewerStage = mermaidViewer.querySelector('.mermaid-viewer__stage')
+  mermaidViewerBody = mermaidViewer.querySelector(".mermaid-viewer__body");
+  mermaidViewerStage = mermaidViewer.querySelector(".mermaid-viewer__stage");
 
-  mermaidViewer.addEventListener('click', (event) => {
-    const target = event.target
-    if (!(target instanceof HTMLElement)) return
+  mermaidViewer.addEventListener("click", (event) => {
+    const target = event.target;
+    if (!(target instanceof HTMLElement)) return;
 
     if (
-      target.dataset.mermaidClose === 'true' ||
+      target.dataset.mermaidClose === "true" ||
       target === mermaidViewerBody ||
       target === mermaidViewerStage
     ) {
-      closeMermaidViewer()
-      return
+      closeMermaidViewer();
+      return;
     }
 
-    const action = target.dataset.mermaidAction
-    if (action === 'zoom-in') {
-      setMermaidViewerScale(mermaidViewerScale + 0.2)
-    } else if (action === 'zoom-out') {
-      setMermaidViewerScale(mermaidViewerScale - 0.2)
-    } else if (action === 'reset') {
-      setMermaidViewerScale(1)
+    const action = target.dataset.mermaidAction;
+    if (action === "zoom-in") {
+      setMermaidViewerScale(mermaidViewerScale + 0.2);
+    } else if (action === "zoom-out") {
+      setMermaidViewerScale(mermaidViewerScale - 0.2);
+    } else if (action === "reset") {
+      setMermaidViewerScale(1);
     }
-  })
-
-  document.addEventListener('keydown', (event) => {
-    if (event.key === 'Escape' && mermaidViewer?.classList.contains('is-open')) {
-      closeMermaidViewer()
-    } else if ((event.key === '+' || event.key === '=') && mermaidViewer?.classList.contains('is-open')) {
-      setMermaidViewerScale(mermaidViewerScale + 0.2)
-    } else if (event.key === '-' && mermaidViewer?.classList.contains('is-open')) {
-      setMermaidViewerScale(mermaidViewerScale - 0.2)
+  });
+
+  document.addEventListener("keydown", (event) => {
+    if (
+      event.key === "Escape" &&
+      mermaidViewer?.classList.contains("is-open")
+    ) {
+      closeMermaidViewer();
+    } else if (
+      (event.key === "+" || event.key === "=") &&
+      mermaidViewer?.classList.contains("is-open")
+    ) {
+      setMermaidViewerScale(mermaidViewerScale + 0.2);
+    } else if (
+      event.key === "-" &&
+      mermaidViewer?.classList.contains("is-open")
+    ) {
+      setMermaidViewerScale(mermaidViewerScale - 0.2);
     }
-  })
-
-  mermaidViewerBody?.addEventListener('wheel', (event) => {
-    if (!mermaidViewer?.classList.contains('is-open')) return
-    event.preventDefault()
-    const delta = event.deltaY < 0 ? 0.12 : -0.12
-    setMermaidViewerScale(mermaidViewerScale + delta)
-  }, { passive: false })
-
-  window.addEventListener('resize', () => {
-    if (mermaidViewer?.classList.contains('is-open')) {
-      updateMermaidViewerFitScale()
-      setMermaidViewerScale(mermaidViewerScale)
+  });
+
+  mermaidViewerBody?.addEventListener(
+    "wheel",
+    (event) => {
+      if (!mermaidViewer?.classList.contains("is-open")) return;
+      event.preventDefault();
+      const delta = event.deltaY < 0 ? 0.12 : -0.12;
+      setMermaidViewerScale(mermaidViewerScale + delta);
+    },
+    { passive: false },
+  );
+
+  window.addEventListener("resize", () => {
+    if (mermaidViewer?.classList.contains("is-open")) {
+      updateMermaidViewerFitScale();
+      setMermaidViewerScale(mermaidViewerScale);
     }
-  })
+  });
 
-  document.body.appendChild(mermaidViewer)
+  document.body.appendChild(mermaidViewer);
 }
 
 function serializeMermaidSvg(svg) {
-  const clone = svg.cloneNode(true)
-  if (!(clone instanceof SVGElement)) return null
+  const clone = svg.cloneNode(true);
+  if (!(clone instanceof SVGElement)) return null;
 
-  if (!clone.getAttribute('xmlns')) {
-    clone.setAttribute('xmlns', 'http://www.w3.org/2000/svg')
+  if (!clone.getAttribute("xmlns")) {
+    clone.setAttribute("xmlns", "http://www.w3.org/2000/svg");
   }
-  if (!clone.getAttribute('xmlns:xlink')) {
-    clone.setAttribute('xmlns:xlink', 'http://www.w3.org/1999/xlink')
+  if (!clone.getAttribute("xmlns:xlink")) {
+    clone.setAttribute("xmlns:xlink", "http://www.w3.org/1999/xlink");
   }
 
-  const rect = svg.getBoundingClientRect()
-  const viewBox = svg.viewBox?.baseVal
-  const rawWidth = rect.width || viewBox?.width || Number.parseFloat(svg.getAttribute('width') || '') || 1200
-  const rawHeight = rect.height || viewBox?.height || Number.parseFloat(svg.getAttribute('height') || '') || 800
-
-  if (!clone.getAttribute('viewBox')) {
-    clone.setAttribute('viewBox', `0 0 ${Math.max(1, Math.round(rawWidth))} ${Math.max(1, Math.round(rawHeight))}`)
+  const rect = svg.getBoundingClientRect();
+  const viewBox = svg.viewBox?.baseVal;
+  const rawWidth =
+    rect.width ||
+    viewBox?.width ||
+    Number.parseFloat(svg.getAttribute("width") || "") ||
+    1200;
+  const rawHeight =
+    rect.height ||
+    viewBox?.height ||
+    Number.parseFloat(svg.getAttribute("height") || "") ||
+    800;
+
+  if (!clone.getAttribute("viewBox")) {
+    clone.setAttribute(
+      "viewBox",
+      `0 0 ${Math.max(1, Math.round(rawWidth))} ${Math.max(1, Math.round(rawHeight))}`,
+    );
   }
 
-  clone.setAttribute('width', String(Math.max(1, Math.round(rawWidth))))
-  clone.setAttribute('height', String(Math.max(1, Math.round(rawHeight))))
+  clone.setAttribute("width", String(Math.max(1, Math.round(rawWidth))));
+  clone.setAttribute("height", String(Math.max(1, Math.round(rawHeight))));
 
   return {
     markup: new XMLSerializer().serializeToString(clone),
     width: Math.max(1, rawWidth),
-    height: Math.max(1, rawHeight)
-  }
+    height: Math.max(1, rawHeight),
+  };
 }
 
 function updateMermaidViewerFitScale() {
-  if (!mermaidViewerNaturalWidth || !mermaidViewerNaturalHeight || typeof window === 'undefined') return
+  if (
+    !mermaidViewerNaturalWidth ||
+    !mermaidViewerNaturalHeight ||
+    typeof window === "undefined"
+  )
+    return;
 
-  const maxWidth = Math.max(320, window.innerWidth - 16)
-  const maxHeight = Math.max(240, window.innerHeight - 16)
+  const maxWidth = Math.max(320, window.innerWidth - 16);
+  const maxHeight = Math.max(240, window.innerHeight - 16);
   mermaidViewerFitScale = Math.max(
     0.25,
-    Math.min(maxWidth / mermaidViewerNaturalWidth, maxHeight / mermaidViewerNaturalHeight)
-  )
+    Math.min(
+      maxWidth / mermaidViewerNaturalWidth,
+      maxHeight / mermaidViewerNaturalHeight,
+    ),
+  );
 }
 
 function setMermaidViewerScale(nextScale) {
-  if (!mermaidViewerStage || !mermaidViewerNaturalWidth || !mermaidViewerNaturalHeight) return
+  if (
+    !mermaidViewerStage ||
+    !mermaidViewerNaturalWidth ||
+    !mermaidViewerNaturalHeight
+  )
+    return;
 
-  mermaidViewerScale = Math.max(0.5, Math.min(nextScale, 4))
+  mermaidViewerScale = Math.max(0.5, Math.min(nextScale, 4));
 
-  const width = mermaidViewerNaturalWidth * mermaidViewerFitScale * mermaidViewerScale
-  const height = mermaidViewerNaturalHeight * mermaidViewerFitScale * mermaidViewerScale
+  const width =
+    mermaidViewerNaturalWidth * mermaidViewerFitScale * mermaidViewerScale;
+  const height =
+    mermaidViewerNaturalHeight * mermaidViewerFitScale * mermaidViewerScale;
 
-  mermaidViewerStage.style.width = `${width}px`
-  mermaidViewerStage.style.height = `${height}px`
+  mermaidViewerStage.style.width = `${width}px`;
+  mermaidViewerStage.style.height = `${height}px`;
 
-  const resetButton = mermaidViewer?.querySelector('[data-mermaid-action="reset"]')
+  const resetButton = mermaidViewer?.querySelector(
+    '[data-mermaid-action="reset"]',
+  );
   if (resetButton instanceof HTMLElement) {
-    resetButton.textContent = `${Math.round(mermaidViewerScale * 100)}%`
+    resetButton.textContent = `${Math.round(mermaidViewerScale * 100)}%`;
   }
 }
 
 function openMermaidViewer(diagram) {
-  ensureMermaidViewer()
-  if (!mermaidViewerBody || !mermaidViewer || !mermaidViewerStage) return
+  ensureMermaidViewer();
+  if (!mermaidViewerBody || !mermaidViewer || !mermaidViewerStage) return;
 
-  const svg = diagram.querySelector('svg')
-  if (!svg) return
+  const svg = diagram.querySelector("svg");
+  if (!svg) return;
 
   if (mermaidViewerUrl) {
-    URL.revokeObjectURL(mermaidViewerUrl)
-    mermaidViewerUrl = undefined
+    URL.revokeObjectURL(mermaidViewerUrl);
+    mermaidViewerUrl = undefined;
   }
 
-  const serialized = serializeMermaidSvg(svg)
-  if (!serialized) return
-
-  const blob = new Blob([serialized.markup], { type: 'image/svg+xml;charset=utf-8' })
-  mermaidViewerUrl = URL.createObjectURL(blob)
-
-  const image = document.createElement('img')
-  image.className = 'mermaid-viewer__image'
-  image.alt = 'Expanded Mermaid diagram'
-  image.src = mermaidViewerUrl
-  image.addEventListener('load', () => {
-    mermaidViewerNaturalWidth = serialized.width
-    mermaidViewerNaturalHeight = serialized.height
-    updateMermaidViewerFitScale()
-    setMermaidViewerScale(1)
+  const serialized = serializeMermaidSvg(svg);
+  if (!serialized) return;
+
+  const blob = new Blob([serialized.markup], {
+    type: "image/svg+xml;charset=utf-8",
+  });
+  mermaidViewerUrl = URL.createObjectURL(blob);
+
+  const image = document.createElement("img");
+  image.className = "mermaid-viewer__image";
+  image.alt = "Expanded Mermaid diagram";
+  image.src = mermaidViewerUrl;
+  image.addEventListener("load", () => {
+    mermaidViewerNaturalWidth = serialized.width;
+    mermaidViewerNaturalHeight = serialized.height;
+    updateMermaidViewerFitScale();
+    setMermaidViewerScale(1);
     if (mermaidViewerBody) {
-      mermaidViewerBody.scrollTo({ top: 0, left: 0 })
+      mermaidViewerBody.scrollTo({ top: 0, left: 0 });
     }
-  })
+  });
 
-  mermaidViewerImage = image
-  mermaidViewerStage.replaceChildren(image)
-  mermaidViewer.classList.add('is-open')
-  document.documentElement.classList.add('has-mermaid-viewer')
+  mermaidViewerStage.replaceChildren(image);
+  mermaidViewer.classList.add("is-open");
+  document.documentElement.classList.add("has-mermaid-viewer");
 }
 
 function closeMermaidViewer() {
-  if (!mermaidViewer || !mermaidViewerBody || !mermaidViewerStage) return
-  mermaidViewer.classList.remove('is-open')
-  mermaidViewerStage.replaceChildren()
-  mermaidViewerStage.style.width = ''
-  mermaidViewerStage.style.height = ''
+  if (!mermaidViewer || !mermaidViewerBody || !mermaidViewerStage) return;
+  mermaidViewer.classList.remove("is-open");
+  mermaidViewerStage.replaceChildren();
+  mermaidViewerStage.style.width = "";
+  mermaidViewerStage.style.height = "";
   if (mermaidViewerUrl) {
-    URL.revokeObjectURL(mermaidViewerUrl)
-    mermaidViewerUrl = undefined
+    URL.revokeObjectURL(mermaidViewerUrl);
+    mermaidViewerUrl = undefined;
   }
-  mermaidViewerImage = undefined
-  mermaidViewerNaturalWidth = 0
-  mermaidViewerNaturalHeight = 0
-  mermaidViewerFitScale = 1
-  mermaidViewerScale = 1
-  document.documentElement.classList.remove('has-mermaid-viewer')
+  mermaidViewerNaturalWidth = 0;
+  mermaidViewerNaturalHeight = 0;
+  mermaidViewerFitScale = 1;
+  mermaidViewerScale = 1;
+  document.documentElement.classList.remove("has-mermaid-viewer");
 }
 
 function bindMermaidZoomables(root = document) {
-  if (typeof document === 'undefined') return
-  ensureMermaidViewer()
+  if (typeof document === "undefined") return;
+  ensureMermaidViewer();
 
-  const diagrams = root.querySelectorAll('.vp-doc .mermaid')
+  const diagrams = root.querySelectorAll(".vp-doc .mermaid");
   for (const diagram of diagrams) {
-    if (!(diagram instanceof HTMLElement) || diagram.dataset.mermaidZoomBound === 'true') {
-      continue
+    if (
+      !(diagram instanceof HTMLElement) ||
+      diagram.dataset.mermaidZoomBound === "true"
+    ) {
+      continue;
     }
 
-    diagram.dataset.mermaidZoomBound = 'true'
-    diagram.tabIndex = 0
-    diagram.setAttribute('role', 'button')
-    diagram.setAttribute('aria-label', 'Open Mermaid diagram in fullscreen')
+    diagram.dataset.mermaidZoomBound = "true";
+    diagram.tabIndex = 0;
+    diagram.setAttribute("role", "button");
+    diagram.setAttribute("aria-label", "Open Mermaid diagram in fullscreen");
 
-    diagram.addEventListener('click', () => {
-      openMermaidViewer(diagram)
-    })
+    diagram.addEventListener("click", () => {
+      openMermaidViewer(diagram);
+    });
 
-    diagram.addEventListener('keydown', (event) => {
-      if (event.key === 'Enter' || event.key === ' ') {
-        event.preventDefault()
-        openMermaidViewer(diagram)
+    diagram.addEventListener("keydown", (event) => {
+      if (event.key === "Enter" || event.key === " ") {
+        event.preventDefault();
+        openMermaidViewer(diagram);
       }
-    })
+    });
   }
 }
 
 function queueMermaidBinding() {
-  if (typeof window === 'undefined') return
+  if (typeof window === "undefined") return;
   window.requestAnimationFrame(() => {
     window.requestAnimationFrame(() => {
-      bindMermaidZoomables()
-    })
-  })
+      bindMermaidZoomables();
+    });
+  });
 }
 
 function ensureMermaidObserver() {
-  if (typeof document === 'undefined' || mermaidObserver) return
+  if (typeof document === "undefined" || mermaidObserver) return;
   mermaidObserver = new MutationObserver(() => {
-    bindMermaidZoomables()
-  })
+    bindMermaidZoomables();
+  });
 
   mermaidObserver.observe(document.body, {
     childList: true,
-    subtree: true
-  })
+    subtree: true,
+  });
 }
 
 export default {
   extends: DefaultTheme,
   enhanceApp(ctx) {
-    ctx.app.component('CourseHome', CourseHome)
-    applyCourseBranding()
-    syncRootLocaleLabel(ctx.siteData)
-    queueLocaleMenuDedupe()
-    queueMermaidBinding()
-    ensureMermaidObserver()
-
-    const previous = ctx.router.onAfterRouteChange
+    ctx.app.component("CourseHome", CourseHome);
+    applyCourseBranding();
+    syncRootLocaleLabel(ctx.siteData);
+    queueLocaleMenuDedupe();
+    queueMermaidBinding();
+    ensureMermaidObserver();
+
+    const previous = ctx.router.onAfterRouteChange;
     ctx.router.onAfterRouteChange = async (to) => {
-      applyCourseBranding()
-      syncRootLocaleLabel(ctx.siteData, to)
-      queueLocaleMenuDedupe()
-      closeMermaidViewer()
-      queueMermaidBinding()
+      applyCourseBranding();
+      syncRootLocaleLabel(ctx.siteData, to);
+      queueLocaleMenuDedupe();
+      closeMermaidViewer();
+      queueMermaidBinding();
       if (previous) {
-        await previous(to)
+        await previous(to);
       }
-    }
-  }
-}
+    };
+  },
+};
diff --git a/docs/.vitepress/theme/style.css b/docs/.vitepress/theme/style.css
index ebf36468..04f9f0b8 100644
--- a/docs/.vitepress/theme/style.css
+++ b/docs/.vitepress/theme/style.css
@@ -2,42 +2,47 @@
 
 /* ---------- CSS Variables (Light) ---------- */
 :root {
-  --course-light-bg: #FAF9F5;
-  --course-light-bg-alt: #F4F3EE;
-  --course-light-bg-elv: #FFFFFF;
-  --course-light-bg-soft: #F4F3EE;
-  --course-light-text-1: #1A1A1A;
-  --course-light-text-2: #4A4A4A;
+  --course-light-bg: #faf9f5;
+  --course-light-bg-alt: #f4f3ee;
+  --course-light-bg-elv: #ffffff;
+  --course-light-bg-soft: #f4f3ee;
+  --course-light-text-1: #1a1a1a;
+  --course-light-text-2: #4a4a4a;
   --course-light-text-3: #757575;
-  --course-light-brand-1: #D95C41;
-  --course-light-brand-2: #C14E36;
-  --course-light-brand-3: #A8412B;
+  --course-light-brand-1: #d95c41;
+  --course-light-brand-2: #c14e36;
+  --course-light-brand-3: #a8412b;
   --course-light-brand-soft: rgba(217, 92, 65, 0.1);
   --course-light-divider: rgba(0, 0, 0, 0.08);
-  --course-light-sidebar-bg: #F4F3EE;
-  --course-light-nav-bg: #FAF9F5;
-  --course-dark-bg: #1A1A1A;
+  --course-light-sidebar-bg: #f4f3ee;
+  --course-light-nav-bg: #faf9f5;
+  --course-dark-bg: #1a1a1a;
   --course-dark-bg-alt: #141414;
   --course-dark-bg-elv: #242424;
   --course-dark-bg-soft: #141414;
-  --course-dark-text-1: #E5E5E5;
-  --course-dark-text-2: #B3B3B3;
+  --course-dark-text-1: #e5e5e5;
+  --course-dark-text-2: #b3b3b3;
   --course-dark-text-3: #808080;
-  --course-dark-brand-1: #E07A64;
-  --course-dark-brand-2: #D95C41;
-  --course-dark-brand-3: #C14E36;
+  --course-dark-brand-1: #e07a64;
+  --course-dark-brand-2: #d95c41;
+  --course-dark-brand-3: #c14e36;
   --course-dark-brand-soft: rgba(224, 122, 100, 0.15);
   --course-dark-divider: rgba(255, 255, 255, 0.1);
   --course-dark-sidebar-bg: #141414;
-  --course-dark-nav-bg: #1A1A1A;
+  --course-dark-nav-bg: #1a1a1a;
   --course-layout-max-width: 1376px;
   --course-sidebar-width: 296px;
   --course-card-radius: 12px;
   --course-feature-shadow: 0 18px 48px rgba(217, 92, 65, 0.12);
   --course-feature-shadow-dark: 0 18px 48px rgba(0, 0, 0, 0.35);
-  --course-font-body: 'Instrument Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
-  --course-font-heading: 'Fraunces', ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
-  --course-font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+  --course-font-body:
+    "Instrument Sans", ui-sans-serif, system-ui, -apple-system,
+    BlinkMacSystemFont, "Segoe UI", sans-serif;
+  --course-font-heading:
+    "Fraunces", ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
+  --course-font-mono:
+    "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo,
+    Consolas, monospace;
   --vp-c-bg: var(--course-light-bg);
   --vp-c-bg-alt: var(--course-light-bg-alt);
   --vp-c-bg-elv: var(--course-light-bg-elv);
@@ -142,14 +147,14 @@
   font-size: 0.9em;
 }
 
-.vp-doc div[class*='language-'] {
+.vp-doc div[class*="language-"] {
   border-radius: 12px;
   margin: 16px 0;
   border: 1px solid var(--vp-c-divider);
   background-color: var(--vp-c-bg-elv);
 }
 
-.vp-doc div[class*='language-'] button.copy {
+.vp-doc div[class*="language-"] button.copy {
   background-color: var(--vp-c-bg-soft);
   border: 1px solid var(--vp-c-divider);
   border-radius: 6px;
@@ -165,7 +170,8 @@
 }
 
 /* ---------- Lists ---------- */
-.vp-doc ul, .vp-doc ol {
+.vp-doc ul,
+.vp-doc ol {
   padding-left: 1.25rem;
 }
 
@@ -212,7 +218,10 @@
 .VPFeature {
   border-radius: var(--course-card-radius) !important;
   border: 1px solid var(--vp-c-divider) !important;
-  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s !important;
+  transition:
+    border-color 0.25s,
+    box-shadow 0.25s,
+    transform 0.25s !important;
   padding: 20px 24px !important;
 }
 
@@ -250,7 +259,9 @@
   position: relative;
   align-items: flex-start;
   border-radius: 8px !important;
-  transition: background-color 0.2s, color 0.2s;
+  transition:
+    background-color 0.2s,
+    color 0.2s;
   color: var(--vp-c-text-2) !important;
   font-size: 0.9rem;
   padding: 8px 12px !important;
@@ -411,8 +422,8 @@
 
 /* Nav Action Button (Try Harness) */
 .VPNavBarMenuLink[href*="/blob/main/docs/"] {
-  background-color: #1A1A1A !important;
-  color: #FFFFFF !important;
+  background-color: #1a1a1a !important;
+  color: #ffffff !important;
   border-radius: 20px !important;
   padding: 0 16px !important;
   margin: 0 4px 0 12px !important;
@@ -427,17 +438,17 @@
 
 .VPNavBarMenuLink[href*="/blob/main/docs/"]:hover {
   background-color: #333333 !important;
-  color: #FFFFFF !important;
+  color: #ffffff !important;
 }
 
 .dark .VPNavBarMenuLink[href*="/blob/main/docs/"] {
-  background-color: #E5E5E5 !important;
-  color: #1A1A1A !important;
+  background-color: #e5e5e5 !important;
+  color: #1a1a1a !important;
 }
 
 .dark .VPNavBarMenuLink[href*="/blob/main/docs/"]:hover {
-  background-color: #FFFFFF !important;
-  color: #1A1A1A !important;
+  background-color: #ffffff !important;
+  color: #1a1a1a !important;
 }
 
 .VPNavBarMenuLink[href*="/blob/main/docs/"]::after {
@@ -454,7 +465,7 @@
 }
 
 .VPNavBarMenuLink.active:not([href*="/blob/main/docs/"])::after {
-  content: '';
+  content: "";
   position: absolute;
   bottom: -1px;
   left: 0;
@@ -469,8 +480,8 @@
 
 /* GitHub Black Button */
 .VPNavBarSocialLink {
-  background-color: #1A1A1A !important;
-  color: #FFFFFF !important;
+  background-color: #1a1a1a !important;
+  color: #ffffff !important;
   border-radius: 20px;
   padding: 0 16px 0 12px !important;
   height: 32px !important;
@@ -495,12 +506,12 @@
 }
 
 .dark .VPNavBarSocialLink {
-  background-color: #E5E5E5 !important;
-  color: #1A1A1A !important;
+  background-color: #e5e5e5 !important;
+  color: #1a1a1a !important;
 }
 
 .dark .VPNavBarSocialLink:hover {
-  background-color: #FFFFFF !important;
+  background-color: #ffffff !important;
 }
 
 @media (min-width: 768px) {
@@ -519,7 +530,8 @@
   overflow: hidden;
 }
 
-.vp-doc th, .vp-doc td {
+.vp-doc th,
+.vp-doc td {
   padding: 10px 16px;
   border: 1px solid var(--vp-c-divider);
 }
@@ -583,7 +595,7 @@
 }
 
 .vp-doc .mermaid::after {
-  content: 'Click to expand';
+  content: "Click to expand";
   position: absolute;
   top: 0;
   right: 0;
@@ -605,7 +617,7 @@
 }
 
 html:lang(zh-CN) .vp-doc .mermaid::after {
-  content: '点击放大';
+  content: "点击放大";
 }
 
 .vp-doc .mermaid:focus-visible {
@@ -636,14 +648,14 @@ html:lang(zh-CN) .vp-doc .mermaid::after {
   }
 
   .vp-doc .mermaid::after {
-    content: 'Tap to expand';
+    content: "Tap to expand";
     opacity: 1;
     top: 0;
     right: 0;
   }
 
   html:lang(zh-CN) .vp-doc .mermaid::after {
-    content: '点击放大';
+    content: "点击放大";
   }
 }
 
@@ -837,7 +849,7 @@ html.has-mermaid-viewer body {
 }
 
 .index-list li::before {
-  content: '';
+  content: "";
   position: absolute;
   left: 0;
   top: 10px;
diff --git a/eslint.config.mjs b/eslint.config.mjs
new file mode 100644
index 00000000..8ec33632
--- /dev/null
+++ b/eslint.config.mjs
@@ -0,0 +1,72 @@
+import js from "@eslint/js";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+
+const ignores = [
+  "node_modules/**",
+  "docs/.vitepress/dist/**",
+  ".git-history-backup-20260519/**",
+  "projects/**",
+  "docs-readme/**",
+  "skills/**",
+  "courses/**/docs/**",
+];
+
+const jsFiles = [
+  "docs/.vitepress/**/*.{js,mjs}",
+  "scripts/**/*.{js,mjs}",
+  "tests/**/*.{js,mjs}",
+  "courses/**/*.mjs",
+];
+
+const tsFiles = ["scripts/**/*.ts", "docs/.vitepress/**/*.ts"];
+const browserFiles = ["docs/.vitepress/theme/**/*.{js,mjs,ts}"];
+
+export default [
+  { ignores },
+  {
+    ...js.configs.recommended,
+    files: jsFiles,
+    languageOptions: {
+      ...js.configs.recommended.languageOptions,
+      ecmaVersion: "latest",
+      sourceType: "module",
+      globals: {
+        ...globals.node,
+      },
+    },
+    rules: {
+      ...js.configs.recommended.rules,
+      "no-unused-vars": [
+        "error",
+        {
+          argsIgnorePattern: "^_",
+          varsIgnorePattern: "^_",
+        },
+      ],
+    },
+  },
+  {
+    files: browserFiles,
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+      },
+    },
+  },
+  ...tseslint.configs.recommended.map((config) => ({
+    ...config,
+    files: tsFiles,
+    languageOptions: {
+      ...config.languageOptions,
+      parserOptions: {
+        ...config.languageOptions?.parserOptions,
+        ecmaVersion: "latest",
+        sourceType: "module",
+      },
+      globals: {
+        ...globals.node,
+      },
+    },
+  })),
+];
diff --git a/package-lock.json b/package-lock.json
index 47fec0d2..8d01e51a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,12 +11,19 @@
         "github-slugger": "^2.0.0"
       },
       "devDependencies": {
+        "@eslint/js": "^9.27.0",
         "@faker-js/faker": "^9.9.0",
+        "eslint": "^9.27.0",
+        "globals": "^16.0.0",
+        "husky": "^9.1.7",
+        "lint-staged": "^15.2.5",
         "mermaid": "^11.14.0",
         "pdf-lib": "^1.17.1",
         "playwright": "^1.59.1",
+        "prettier": "^3.5.3",
         "tsx": "^4.19.0",
         "typescript": "^5.7.0",
+        "typescript-eslint": "^8.32.0",
         "vitepress": "^1.6.4",
         "vitepress-plugin-mermaid": "^2.0.17"
       }
@@ -887,6 +894,163 @@
         "node": ">=12"
       }
     },
+    "node_modules/@eslint-community/eslint-utils": {
+      "version": "4.9.1",
+      "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.9.1.tgz",
+      "integrity": "sha512-phrYmNiYppR7znFEdqgfWHXR6NCkZEK7hwWDHZUjit/2/U0r6XvkDl0SYnoM51Hq7FhCGdLDT6zxCCOY1hexsQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "eslint-visitor-keys": "^3.4.3"
+      },
+      "engines": {
+        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^6.0.0 || ^7.0.0 || >=8.0.0"
+      }
+    },
+    "node_modules/@eslint-community/eslint-utils/node_modules/eslint-visitor-keys": {
+      "version": "3.4.3",
+      "resolved": "https://registry.npmjs.org/eslint-visitor-keys/-/eslint-visitor-keys-3.4.3.tgz",
+      "integrity": "sha512-wpc+LXeiyiisxPlEkUzU6svyS1frIO3Mgxj1fdy7Pm8Ygzguax2N3Fa/D/ag1WqbOprdI+uY6wMUl8/a2G+iag==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
+      }
+    },
+    "node_modules/@eslint-community/regexpp": {
+      "version": "4.12.2",
+      "resolved": "https://registry.npmjs.org/@eslint-community/regexpp/-/regexpp-4.12.2.tgz",
+      "integrity": "sha512-EriSTlt5OC9/7SXkRSCAhfSxxoSUgBm33OH+IkwbdpgoqsSsUg7y3uh+IICI/Qg4BBWr3U2i39RpmycbxMq4ew==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^12.0.0 || ^14.0.0 || >=16.0.0"
+      }
+    },
+    "node_modules/@eslint/config-array": {
+      "version": "0.21.2",
+      "resolved": "https://registry.npmjs.org/@eslint/config-array/-/config-array-0.21.2.tgz",
+      "integrity": "sha512-nJl2KGTlrf9GjLimgIru+V/mzgSK0ABCDQRvxw5BjURL7WfH5uoWmizbH7QB6MmnMBd8cIC9uceWnezL1VZWWw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@eslint/object-schema": "^2.1.7",
+        "debug": "^4.3.1",
+        "minimatch": "^3.1.5"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
+    "node_modules/@eslint/config-helpers": {
+      "version": "0.4.2",
+      "resolved": "https://registry.npmjs.org/@eslint/config-helpers/-/config-helpers-0.4.2.tgz",
+      "integrity": "sha512-gBrxN88gOIf3R7ja5K9slwNayVcZgK6SOUORm2uBzTeIEfeVaIhOpCtTox3P6R7o2jLFwLFTLnC7kU/RGcYEgw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@eslint/core": "^0.17.0"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
+    "node_modules/@eslint/core": {
+      "version": "0.17.0",
+      "resolved": "https://registry.npmjs.org/@eslint/core/-/core-0.17.0.tgz",
+      "integrity": "sha512-yL/sLrpmtDaFEiUj1osRP4TI2MDz1AddJL+jZ7KSqvBuliN4xqYY54IfdN8qD8Toa6g1iloph1fxQNkjOxrrpQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@types/json-schema": "^7.0.15"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
+    "node_modules/@eslint/eslintrc": {
+      "version": "3.3.5",
+      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-3.3.5.tgz",
+      "integrity": "sha512-4IlJx0X0qftVsN5E+/vGujTRIFtwuLbNsVUe7TO6zYPDR1O6nFwvwhIKEKSrl6dZchmYBITazxKoUYOjdtjlRg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ajv": "^6.14.0",
+        "debug": "^4.3.2",
+        "espree": "^10.0.1",
+        "globals": "^14.0.0",
+        "ignore": "^5.2.0",
+        "import-fresh": "^3.2.1",
+        "js-yaml": "^4.1.1",
+        "minimatch": "^3.1.5",
+        "strip-json-comments": "^3.1.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/eslint"
+      }
+    },
+    "node_modules/@eslint/eslintrc/node_modules/globals": {
+      "version": "14.0.0",
+      "resolved": "https://registry.npmjs.org/globals/-/globals-14.0.0.tgz",
+      "integrity": "sha512-oahGvuMGQlPw/ivIYBjVSrWAfWLBeku5tpPE2fOPLi+WHffIWbuh2tCjhyQhTBPMf5E9jDEH4FOmTYgYwbKwtQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/@eslint/js": {
+      "version": "9.39.4",
+      "resolved": "https://registry.npmjs.org/@eslint/js/-/js-9.39.4.tgz",
+      "integrity": "sha512-nE7DEIchvtiFTwBw4Lfbu59PG+kCofhjsKaCWzxTpt4lfRjRMqG6uMBzKXuEcyXhOHoUp9riAm7/aWYGhXZ9cw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "url": "https://eslint.org/donate"
+      }
+    },
+    "node_modules/@eslint/object-schema": {
+      "version": "2.1.7",
+      "resolved": "https://registry.npmjs.org/@eslint/object-schema/-/object-schema-2.1.7.tgz",
+      "integrity": "sha512-VtAOaymWVfZcmZbp6E2mympDIHvyjXs/12LqWYjVw6qjrfF+VK+fyG33kChz3nnK+SU5/NeHOqrTEHS8sXO3OA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
+    "node_modules/@eslint/plugin-kit": {
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/@eslint/plugin-kit/-/plugin-kit-0.4.1.tgz",
+      "integrity": "sha512-43/qtrDUokr7LJqoF2c3+RInu/t4zfrpYdoSDfYyhg52rwLV6TnOvdG4fXm7IkSB3wErkcmJS9iEhjVtOSEjjA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@eslint/core": "^0.17.0",
+        "levn": "^0.4.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
     "node_modules/@faker-js/faker": {
       "version": "9.9.0",
       "resolved": "https://registry.npmjs.org/@faker-js/faker/-/faker-9.9.0.tgz",
@@ -904,6 +1068,72 @@
         "npm": ">=9.0.0"
       }
     },
+    "node_modules/@humanfs/core": {
+      "version": "0.19.2",
+      "resolved": "https://registry.npmjs.org/@humanfs/core/-/core-0.19.2.tgz",
+      "integrity": "sha512-UhXNm+CFMWcbChXywFwkmhqjs3PRCmcSa/hfBgLIb7oQ5HNb1wS0icWsGtSAUNgefHeI+eBrA8I1fxmbHsGdvA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@humanfs/types": "^0.15.0"
+      },
+      "engines": {
+        "node": ">=18.18.0"
+      }
+    },
+    "node_modules/@humanfs/node": {
+      "version": "0.16.8",
+      "resolved": "https://registry.npmjs.org/@humanfs/node/-/node-0.16.8.tgz",
+      "integrity": "sha512-gE1eQNZ3R++kTzFUpdGlpmy8kDZD/MLyHqDwqjkVQI0JMdI1D51sy1H958PNXYkM2rAac7e5/CnIKZrHtPh3BQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@humanfs/core": "^0.19.2",
+        "@humanfs/types": "^0.15.0",
+        "@humanwhocodes/retry": "^0.4.0"
+      },
+      "engines": {
+        "node": ">=18.18.0"
+      }
+    },
+    "node_modules/@humanfs/types": {
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/@humanfs/types/-/types-0.15.0.tgz",
+      "integrity": "sha512-ZZ1w0aoQkwuUuC7Yf+7sdeaNfqQiiLcSRbfI08oAxqLtpXQr9AIVX7Ay7HLDuiLYAaFPu8oBYNq/QIi9URHJ3Q==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18.18.0"
+      }
+    },
+    "node_modules/@humanwhocodes/module-importer": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/module-importer/-/module-importer-1.0.1.tgz",
+      "integrity": "sha512-bxveV4V8v5Yb4ncFTT3rPSgZBOpCkjfK0y4oVVVJwIuDVBRMDXrPyXRL988i5ap9m9bnyEEjWfm5WkBmtffLfA==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=12.22"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/nzakas"
+      }
+    },
+    "node_modules/@humanwhocodes/retry": {
+      "version": "0.4.3",
+      "resolved": "https://registry.npmjs.org/@humanwhocodes/retry/-/retry-0.4.3.tgz",
+      "integrity": "sha512-bV0Tgo9K4hfPCek+aMAn81RppFKv2ySDQeMoSZuvTASywNTnVJCArCZE2FWqpvIatKu7VMRLWlR1EazvVhDyhQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18.18"
+      },
+      "funding": {
+        "type": "github",
+        "url": "https://github.com/sponsors/nzakas"
+      }
+    },
     "node_modules/@iconify-json/simple-icons": {
       "version": "1.2.75",
       "resolved": "https://registry.npmmirror.com/@iconify-json/simple-icons/-/simple-icons-1.2.75.tgz",
@@ -1740,6 +1970,13 @@
         "@types/unist": "*"
       }
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+      "peerDependencies": {
+        "picomatch": "^3 || ^4"
+      },
+      "peerDependenciesMeta": {
+        "picomatch": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/tinyglobby/node_modules/picomatch": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.4.tgz",
+      "integrity": "sha512-QP88BAKvMam/3NxH6vj2o21R6MjxZUAd6nlwAS/pnGvN9IVLocLHxGYIzFhg6fUQ+5th6P4dv4eW9jX3DSIj7A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
+    "node_modules/to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+      "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "is-number": "^7.0.0"
+      },
+      "engines": {
+        "node": ">=8.0"
+      }
+    },
     "node_modules/trim-lines": {
       "version": "3.0.1",
       "resolved": "https://registry.npmmirror.com/trim-lines/-/trim-lines-3.0.1.tgz",
@@ -3784,6 +5800,19 @@
         "url": "https://github.com/sponsors/wooorm"
       }
     },
+    "node_modules/ts-api-utils": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/ts-api-utils/-/ts-api-utils-2.5.0.tgz",
+      "integrity": "sha512-OJ/ibxhPlqrMM0UiNHJ/0CKQkoKF243/AEmplt3qpRgkW8VG7IfOS41h7V8TjITqdByHzrjcS/2si+y4lIh8NA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18.12"
+      },
+      "peerDependencies": {
+        "typescript": ">=4.8.4"
+      }
+    },
     "node_modules/ts-dedent": {
       "version": "2.2.0",
       "resolved": "https://registry.npmmirror.com/ts-dedent/-/ts-dedent-2.2.0.tgz",
@@ -4254,6 +6283,19 @@
         "@esbuild/win32-x64": "0.27.4"
       }
     },
+    "node_modules/type-check": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
+      "integrity": "sha512-XleUoc9uwGXqjWwXaUTZAmzMcFZ5858QA2vvx1Ur5xIcixXIP+8LnFDgRplU30us6teqdlskFfu+ae4K79Ooew==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "prelude-ls": "^1.2.1"
+      },
+      "engines": {
+        "node": ">= 0.8.0"
+      }
+    },
     "node_modules/typescript": {
       "version": "5.9.3",
       "resolved": "https://registry.npmmirror.com/typescript/-/typescript-5.9.3.tgz",
@@ -4268,6 +6310,30 @@
         "node": ">=14.17"
       }
     },
+    "node_modules/typescript-eslint": {
+      "version": "8.59.4",
+      "resolved": "https://registry.npmjs.org/typescript-eslint/-/typescript-eslint-8.59.4.tgz",
+      "integrity": "sha512-Rw6+44QNFaXtgHSjPy+Kw8hrJniMYzR85E9yLmOLcfZ91/rz+JXQbDTCmc6ccxMPY6K6PgAq26f0JCBfR7LIPQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@typescript-eslint/eslint-plugin": "8.59.4",
+        "@typescript-eslint/parser": "8.59.4",
+        "@typescript-eslint/typescript-estree": "8.59.4",
+        "@typescript-eslint/utils": "8.59.4"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/typescript-eslint"
+      },
+      "peerDependencies": {
+        "eslint": "^8.57.0 || ^9.0.0 || ^10.0.0",
+        "typescript": ">=4.8.4 <6.1.0"
+      }
+    },
     "node_modules/ufo": {
       "version": "1.6.3",
       "resolved": "https://registry.npmmirror.com/ufo/-/ufo-1.6.3.tgz",
@@ -4348,6 +6414,16 @@
         "url": "https://opencollective.com/unified"
       }
     },
+    "node_modules/uri-js": {
+      "version": "4.4.1",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
+      "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "dependencies": {
+        "punycode": "^2.1.0"
+      }
+    },
     "node_modules/uuid": {
       "version": "11.1.0",
       "resolved": "https://registry.npmmirror.com/uuid/-/uuid-11.1.0.tgz",
@@ -4585,6 +6661,92 @@
         }
       }
     },
+    "node_modules/which": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "isexe": "^2.0.0"
+      },
+      "bin": {
+        "node-which": "bin/node-which"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
+    "node_modules/word-wrap": {
+      "version": "1.2.5",
+      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
+      "integrity": "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/wrap-ansi": {
+      "version": "9.0.2",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-9.0.2.tgz",
+      "integrity": "sha512-42AtmgqjV+X1VpdOfyTGOYRi0/zsoLqtXQckTmqTeybT+BDIbM/Guxo7x3pE2vtpr1ok6xRqM9OpBe+Jyoqyww==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^6.2.1",
+        "string-width": "^7.0.0",
+        "strip-ansi": "^7.1.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/wrap-ansi?sponsor=1"
+      }
+    },
+    "node_modules/wrap-ansi/node_modules/ansi-styles": {
+      "version": "6.2.3",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-6.2.3.tgz",
+      "integrity": "sha512-4Dj6M28JB+oAH8kFkTLUo+a2jwOFkuqb3yucU0CANcRRUbxS0cP0nZYCGjcc3BNXwRIsUVmDGgzawme7zvJHvg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/chalk/ansi-styles?sponsor=1"
+      }
+    },
+    "node_modules/yaml": {
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.9.0.tgz",
+      "integrity": "sha512-2AvhNX3mb8zd6Zy7INTtSpl1F15HW6Wnqj0srWlkKLcpYl/gMIMJiyuGq2KeI2YFxUPjdlB+3Lc10seMLtL4cA==",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "yaml": "bin.mjs"
+      },
+      "engines": {
+        "node": ">= 14.6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/eemeli"
+      }
+    },
+    "node_modules/yocto-queue": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz",
+      "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
     "node_modules/zwitch": {
       "version": "2.0.4",
       "resolved": "https://registry.npmmirror.com/zwitch/-/zwitch-2.0.4.tgz",
diff --git a/package.json b/package.json
index 9f36604f..cd1fab3e 100644
--- a/package.json
+++ b/package.json
@@ -7,12 +7,17 @@
     "dev": "vitepress dev docs",
     "build": "vitepress build docs",
     "preview": "vitepress preview docs",
+    "lint": "eslint . --max-warnings=0",
+    "format": "prettier --write README.md WHITELABEL.md package.json .github/workflows docs/.vitepress scripts tests courses/*/course.manifest.mjs",
+    "format:check": "prettier --check README.md WHITELABEL.md package.json .github/workflows docs/.vitepress scripts tests courses/*/course.manifest.mjs",
+    "prepare": "husky",
     "test": "node --test tests/*.test.mjs",
     "docs:dev": "vitepress dev docs",
     "docs:build": "vitepress build docs",
     "docs:preview": "vitepress preview docs",
     "lecture:run": "tsx",
     "course:list": "node scripts/set-active-course.mjs --list",
+    "course:new": "node scripts/new-course.mjs",
     "course:activate": "node scripts/set-active-course.mjs",
     "screenshots:readme": "node --import tsx scripts/capture-readme-screenshots.ts",
     "pdf:export": "node --import tsx scripts/build-course-pdfs.ts",
@@ -20,15 +25,31 @@
   },
   "devDependencies": {
     "@faker-js/faker": "^9.9.0",
+    "@eslint/js": "^9.27.0",
+    "eslint": "^9.27.0",
+    "globals": "^16.0.0",
+    "husky": "^9.1.7",
+    "lint-staged": "^15.2.5",
     "mermaid": "^11.14.0",
     "pdf-lib": "^1.17.1",
     "playwright": "^1.59.1",
+    "prettier": "^3.5.3",
     "tsx": "^4.19.0",
+    "typescript-eslint": "^8.32.0",
     "typescript": "^5.7.0",
     "vitepress": "^1.6.4",
     "vitepress-plugin-mermaid": "^2.0.17"
   },
   "dependencies": {
     "github-slugger": "^2.0.0"
+  },
+  "lint-staged": {
+    "*.{js,mjs,ts}": [
+      "eslint --fix",
+      "prettier --write"
+    ],
+    "*.{md,json,yml,yaml,css,vue}": [
+      "prettier --write"
+    ]
   }
 }
diff --git a/scripts/build-course-pdfs.ts b/scripts/build-course-pdfs.ts
index a1a5cb3d..7e97d0b6 100644
--- a/scripts/build-course-pdfs.ts
+++ b/scripts/build-course-pdfs.ts
@@ -1,7 +1,7 @@
-import path from 'node:path'
-import { promises as fs } from 'node:fs'
-import { chromium, devices, type BrowserContext, type Page } from 'playwright'
-import { PDFDocument } from 'pdf-lib'
+import path from "node:path";
+import { promises as fs } from "node:fs";
+import { chromium, devices, type BrowserContext, type Page } from "playwright";
+import { PDFDocument } from "pdf-lib";
 import {
   artifactsRoot,
   discoverCoursePages,
@@ -9,8 +9,8 @@ import {
   pdfOutputRoot,
   startStaticServer,
   toAbsoluteSiteUrl,
-  type Language
-} from './export-site-utils'
+  type Language,
+} from "./export-site-utils";
 
 const PDF_EXPORT_CSS = `
   .VPNav,
@@ -68,28 +68,28 @@ const PDF_EXPORT_CSS = `
   body {
     background: #ffffff !important;
   }
-`
+`;
 
 async function main() {
-  const languages = parseRequestedLanguages(process.argv.slice(2))
-  const tempRoot = path.join(artifactsRoot, 'pdfs/.tmp')
+  const languages = parseRequestedLanguages(process.argv.slice(2));
+  const tempRoot = path.join(artifactsRoot, "pdfs/.tmp");
 
-  await fs.rm(tempRoot, { recursive: true, force: true })
-  await ensureDirectory(tempRoot)
-  await ensureDirectory(pdfOutputRoot)
+  await fs.rm(tempRoot, { recursive: true, force: true });
+  await ensureDirectory(tempRoot);
+  await ensureDirectory(pdfOutputRoot);
 
-  const server = await startStaticServer()
-  const browser = await chromium.launch({ headless: true })
-  const context = await browser.newContext(devices['Desktop Chrome'])
+  const server = await startStaticServer();
+  const browser = await chromium.launch({ headless: true });
+  const context = await browser.newContext(devices["Desktop Chrome"]);
 
   try {
     for (const language of languages) {
-      await buildLanguagePdf(context, server.origin, language, tempRoot)
+      await buildLanguagePdf(context, server.origin, language, tempRoot);
     }
   } finally {
-    await context.close()
-    await browser.close()
-    await server.close()
+    await context.close();
+    await browser.close();
+    await server.close();
   }
 }
 
@@ -97,96 +97,106 @@ async function buildLanguagePdf(
   context: BrowserContext,
   origin: string,
   language: Language,
-  tempRoot: string
+  tempRoot: string,
 ) {
-  const pages = await discoverCoursePages(language)
-  const tempLanguageDir = path.join(tempRoot, language)
-  const outputPdf = path.join(pdfOutputRoot, `learn-harness-engineering-${language}.pdf`)
-  const manifestPath = path.join(pdfOutputRoot, `learn-harness-engineering-${language}.json`)
-
-  await fs.rm(tempLanguageDir, { recursive: true, force: true })
-  await ensureDirectory(tempLanguageDir)
-
-  const manifest: Array<{ title: string; routePath: string }> = []
-  const tempPdfPaths: string[] = []
-
-  let pageIndex = 1
+  const pages = await discoverCoursePages(language);
+  const tempLanguageDir = path.join(tempRoot, language);
+  const outputPdf = path.join(
+    pdfOutputRoot,
+    `learn-harness-engineering-${language}.pdf`,
+  );
+  const manifestPath = path.join(
+    pdfOutputRoot,
+    `learn-harness-engineering-${language}.json`,
+  );
+
+  await fs.rm(tempLanguageDir, { recursive: true, force: true });
+  await ensureDirectory(tempLanguageDir);
+
+  const manifest: Array<{ title: string; routePath: string }> = [];
+  const tempPdfPaths: string[] = [];
+
+  let pageIndex = 1;
   for (const entry of pages) {
-    const page = await context.newPage()
-    const url = toAbsoluteSiteUrl(origin, entry.routePath)
+    const page = await context.newPage();
+    const url = toAbsoluteSiteUrl(origin, entry.routePath);
 
-    await page.goto(url, { waitUntil: 'networkidle' })
-    await page.addStyleTag({ content: PDF_EXPORT_CSS })
-    await page.emulateMedia({ media: 'screen' })
+    await page.goto(url, { waitUntil: "networkidle" });
+    await page.addStyleTag({ content: PDF_EXPORT_CSS });
+    await page.emulateMedia({ media: "screen" });
 
-    const title = await extractPageTitle(page, entry.titleHint)
+    const title = await extractPageTitle(page, entry.titleHint);
     const safeSlug = entry.routePath
-      .replace(/^\/+/, '')
-      .replace(/\/+$/, '')
-      .replace(/[/.]+/g, '-')
-      .replace(/-+/g, '-')
-      .toLowerCase()
+      .replace(/^\/+/, "")
+      .replace(/\/+$/, "")
+      .replace(/[/.]+/g, "-")
+      .replace(/-+/g, "-")
+      .toLowerCase();
 
     const tempPdfPath = path.join(
       tempLanguageDir,
-      `${String(pageIndex).padStart(2, '0')}-${safeSlug || language}.pdf`
-    )
+      `${String(pageIndex).padStart(2, "0")}-${safeSlug || language}.pdf`,
+    );
 
     await page.pdf({
       path: tempPdfPath,
-      format: 'A4',
+      format: "A4",
       printBackground: true,
       margin: {
-        top: '14mm',
-        bottom: '14mm',
-        left: '12mm',
-        right: '12mm'
+        top: "14mm",
+        bottom: "14mm",
+        left: "12mm",
+        right: "12mm",
       },
       displayHeaderFooter: true,
-      headerTemplate: '<div></div>',
+      headerTemplate: "<div></div>",
       footerTemplate:
-        '<div style="width:100%;font-size:9px;padding:0 12mm;color:#777;display:flex;justify-content:center;"><span class="pageNumber"></span>/<span class="totalPages"></span></div>'
-    })
+        '<div style="width:100%;font-size:9px;padding:0 12mm;color:#777;display:flex;justify-content:center;"><span class="pageNumber"></span>/<span class="totalPages"></span></div>',
+    });
 
-    await page.close()
+    await page.close();
 
-    manifest.push({ title, routePath: entry.routePath })
-    tempPdfPaths.push(tempPdfPath)
-    console.log(`Rendered ${language.toUpperCase()} PDF section: ${title}`)
-    pageIndex += 1
+    manifest.push({ title, routePath: entry.routePath });
+    tempPdfPaths.push(tempPdfPath);
+    console.log(`Rendered ${language.toUpperCase()} PDF section: ${title}`);
+    pageIndex += 1;
   }
 
-  const coverPdfPath = path.join(tempLanguageDir, `00-cover-${language}.pdf`)
-  await renderCoverPage(context, coverPdfPath, language, manifest)
-  await mergePdfs([coverPdfPath, ...tempPdfPaths], outputPdf)
-  await fs.writeFile(manifestPath, JSON.stringify(manifest, null, 2))
+  const coverPdfPath = path.join(tempLanguageDir, `00-cover-${language}.pdf`);
+  await renderCoverPage(context, coverPdfPath, language, manifest);
+  await mergePdfs([coverPdfPath, ...tempPdfPaths], outputPdf);
+  await fs.writeFile(manifestPath, JSON.stringify(manifest, null, 2));
 
-  console.log(`Built ${outputPdf}`)
+  console.log(`Built ${outputPdf}`);
 }
 
 async function extractPageTitle(page: Page, fallback: string) {
-  const heading = await page.locator('h1').first().textContent().catch(() => null)
-  const title = heading?.trim()
-  if (title) return title
-  const documentTitle = await page.title()
-  return documentTitle.split('|')[0].trim() || fallback
+  const heading = await page
+    .locator("h1")
+    .first()
+    .textContent()
+    .catch(() => null);
+  const title = heading?.trim();
+  if (title) return title;
+  const documentTitle = await page.title();
+  return documentTitle.split("|")[0].trim() || fallback;
 }
 
 async function renderCoverPage(
   context: BrowserContext,
   outputPath: string,
   language: Language,
-  manifest: Array<{ title: string; routePath: string }>
+  manifest: Array<{ title: string; routePath: string }>,
 ) {
-  const page = await context.newPage()
-  const generatedAt = new Date().toISOString().slice(0, 10)
-  const languageLabel = language === 'en' ? 'English' : '简体中文'
+  const page = await context.newPage();
+  const generatedAt = new Date().toISOString().slice(0, 10);
+  const languageLabel = language === "en" ? "English" : "简体中文";
   const contents = manifest
     .map(
       (entry) =>
-        `<li><span>${escapeHtml(entry.title)}</span><code>${escapeHtml(entry.routePath)}</code></li>`
+        `<li><span>${escapeHtml(entry.title)}</span><code>${escapeHtml(entry.routePath)}</code></li>`,
     )
-    .join('')
+    .join("");
 
   await page.setContent(
     `<!doctype html>
@@ -235,60 +245,60 @@ async function renderCoverPage(
           <ol>${contents}</ol>
         </body>
       </html>`,
-    { waitUntil: 'load' }
-  )
+    { waitUntil: "load" },
+  );
 
   await page.pdf({
     path: outputPath,
-    format: 'A4',
+    format: "A4",
     printBackground: true,
     margin: {
-      top: '14mm',
-      bottom: '14mm',
-      left: '12mm',
-      right: '12mm'
-    }
-  })
-  await page.close()
+      top: "14mm",
+      bottom: "14mm",
+      left: "12mm",
+      right: "12mm",
+    },
+  });
+  await page.close();
 }
 
 async function mergePdfs(inputPaths: string[], outputPath: string) {
-  const merged = await PDFDocument.create()
+  const merged = await PDFDocument.create();
 
   for (const inputPath of inputPaths) {
-    const sourceBytes = await fs.readFile(inputPath)
-    const source = await PDFDocument.load(sourceBytes)
-    const copiedPages = await merged.copyPages(source, source.getPageIndices())
+    const sourceBytes = await fs.readFile(inputPath);
+    const source = await PDFDocument.load(sourceBytes);
+    const copiedPages = await merged.copyPages(source, source.getPageIndices());
     for (const copiedPage of copiedPages) {
-      merged.addPage(copiedPage)
+      merged.addPage(copiedPage);
     }
   }
 
-  await fs.writeFile(outputPath, await merged.save())
+  await fs.writeFile(outputPath, await merged.save());
 }
 
 function parseRequestedLanguages(args: string[]): Language[] {
-  const languageIndex = args.findIndex((arg) => arg === '--lang')
+  const languageIndex = args.findIndex((arg) => arg === "--lang");
   if (languageIndex === -1) {
-    return ['en', 'zh']
+    return ["en", "zh"];
   }
 
-  const value = args[languageIndex + 1]
-  if (value === 'en' || value === 'zh') {
-    return [value]
+  const value = args[languageIndex + 1];
+  if (value === "en" || value === "zh") {
+    return [value];
   }
 
-  throw new Error(`Unsupported language: ${value}`)
+  throw new Error(`Unsupported language: ${value}`);
 }
 
 function escapeHtml(value: string) {
   return value
-    .replaceAll('&', '&amp;')
-    .replaceAll('<', '&lt;')
-    .replaceAll('>', '&gt;')
+    .replaceAll("&", "&amp;")
+    .replaceAll("<", "&lt;")
+    .replaceAll(">", "&gt;");
 }
 
 main().catch((error) => {
-  console.error(error)
-  process.exitCode = 1
-})
+  console.error(error);
+  process.exitCode = 1;
+});
diff --git a/scripts/capture-readme-screenshots.ts b/scripts/capture-readme-screenshots.ts
index 11c84cbf..e61c4502 100644
--- a/scripts/capture-readme-screenshots.ts
+++ b/scripts/capture-readme-screenshots.ts
@@ -1,41 +1,41 @@
-import path from 'node:path'
-import { chromium, devices } from 'playwright'
+import path from "node:path";
+import { chromium, devices } from "playwright";
 import {
   ensureDirectory,
   readmeScreenshotTargets,
   readmeScreenshotsRoot,
   startStaticServer,
-  toAbsoluteSiteUrl
-} from './export-site-utils'
+  toAbsoluteSiteUrl,
+} from "./export-site-utils";
 
 async function main() {
-  await ensureDirectory(readmeScreenshotsRoot)
+  await ensureDirectory(readmeScreenshotsRoot);
 
-  const server = await startStaticServer()
-  const browser = await chromium.launch({ headless: true })
-  const context = await browser.newContext(devices['Desktop Chrome'])
+  const server = await startStaticServer();
+  const browser = await chromium.launch({ headless: true });
+  const context = await browser.newContext(devices["Desktop Chrome"]);
 
   try {
     for (const target of readmeScreenshotTargets) {
-      const page = await context.newPage()
+      const page = await context.newPage();
       await page.goto(toAbsoluteSiteUrl(server.origin, target.routePath), {
-        waitUntil: 'networkidle'
-      })
+        waitUntil: "networkidle",
+      });
       await page.screenshot({
         path: path.join(readmeScreenshotsRoot, target.outputName),
-        fullPage: false
-      })
-      await page.close()
-      console.log(`Captured ${target.outputName}`)
+        fullPage: false,
+      });
+      await page.close();
+      console.log(`Captured ${target.outputName}`);
     }
   } finally {
-    await context.close()
-    await browser.close()
-    await server.close()
+    await context.close();
+    await browser.close();
+    await server.close();
   }
 }
 
 main().catch((error) => {
-  console.error(error)
-  process.exitCode = 1
-})
+  console.error(error);
+  process.exitCode = 1;
+});
diff --git a/scripts/export-site-utils.ts b/scripts/export-site-utils.ts
index 88812f0d..8720c26c 100644
--- a/scripts/export-site-utils.ts
+++ b/scripts/export-site-utils.ts
@@ -1,122 +1,146 @@
-import http from 'node:http'
-import path from 'node:path'
-import { existsSync } from 'node:fs'
-import { promises as fs } from 'node:fs'
+import http from "node:http";
+import path from "node:path";
+import { existsSync } from "node:fs";
+import { promises as fs } from "node:fs";
 
-export type Language = 'en' | 'zh'
+export type Language = "en" | "zh";
 
 export type CoursePage = {
-  filePath: string
-  routePath: string
-  titleHint: string
-}
+  filePath: string;
+  routePath: string;
+  titleHint: string;
+};
 
 export type ScreenshotTarget = {
-  language: Language
-  routePath: string
-  outputName: string
-}
+  language: Language;
+  routePath: string;
+  outputName: string;
+};
 
-export const repoRoot = process.cwd()
-export const docsRoot = path.resolve(repoRoot, 'docs')
-export const distRoot = path.resolve(repoRoot, 'docs/.vitepress/dist')
-export const artifactsRoot = path.resolve(repoRoot, 'artifacts')
-export const pdfOutputRoot = path.resolve(artifactsRoot, 'pdfs')
-export const readmeScreenshotsRoot = path.resolve(docsRoot, 'public/screenshots/readme')
+export const repoRoot = process.cwd();
+export const docsRoot = path.resolve(repoRoot, "docs");
+export const distRoot = path.resolve(repoRoot, "docs/.vitepress/dist");
+export const artifactsRoot = path.resolve(repoRoot, "artifacts");
+export const pdfOutputRoot = path.resolve(artifactsRoot, "pdfs");
+export const readmeScreenshotsRoot = path.resolve(
+  docsRoot,
+  "public/screenshots/readme",
+);
 export const docsBasePath = normalizeBasePath(
-  process.env.DOCS_BASE_PATH || '/learn-harness-engineering/'
-)
+  process.env.DOCS_BASE_PATH || "/learn-harness-engineering/",
+);
 
 const MIME_TYPES: Record<string, string> = {
-  '.css': 'text/css; charset=utf-8',
-  '.html': 'text/html; charset=utf-8',
-  '.ico': 'image/x-icon',
-  '.jpeg': 'image/jpeg',
-  '.jpg': 'image/jpeg',
-  '.js': 'text/javascript; charset=utf-8',
-  '.json': 'application/json; charset=utf-8',
-  '.md': 'text/markdown; charset=utf-8',
-  '.png': 'image/png',
-  '.svg': 'image/svg+xml',
-  '.txt': 'text/plain; charset=utf-8',
-  '.woff': 'font/woff',
-  '.woff2': 'font/woff2'
-}
+  ".css": "text/css; charset=utf-8",
+  ".html": "text/html; charset=utf-8",
+  ".ico": "image/x-icon",
+  ".jpeg": "image/jpeg",
+  ".jpg": "image/jpeg",
+  ".js": "text/javascript; charset=utf-8",
+  ".json": "application/json; charset=utf-8",
+  ".md": "text/markdown; charset=utf-8",
+  ".png": "image/png",
+  ".svg": "image/svg+xml",
+  ".txt": "text/plain; charset=utf-8",
+  ".woff": "font/woff",
+  ".woff2": "font/woff2",
+};
 
 export const readmeScreenshotTargets: ScreenshotTarget[] = [
-  { language: 'en', routePath: '/en/', outputName: 'en-home.png' },
+  { language: "en", routePath: "/en/", outputName: "en-home.png" },
+  {
+    language: "en",
+    routePath: "/en/lectures/lecture-01-why-capable-agents-still-fail/",
+    outputName: "en-lecture-01.png",
+  },
+  {
+    language: "en",
+    routePath: "/en/resources/",
+    outputName: "en-resources.png",
+  },
+  { language: "zh", routePath: "/zh/", outputName: "zh-home.png" },
   {
-    language: 'en',
-    routePath: '/en/lectures/lecture-01-why-capable-agents-still-fail/',
-    outputName: 'en-lecture-01.png'
+    language: "zh",
+    routePath: "/zh/lectures/lecture-01-why-capable-agents-still-fail/",
+    outputName: "zh-lecture-01.png",
   },
-  { language: 'en', routePath: '/en/resources/', outputName: 'en-resources.png' },
-  { language: 'zh', routePath: '/zh/', outputName: 'zh-home.png' },
   {
-    language: 'zh',
-    routePath: '/zh/lectures/lecture-01-why-capable-agents-still-fail/',
-    outputName: 'zh-lecture-01.png'
+    language: "zh",
+    routePath: "/zh/resources/",
+    outputName: "zh-resources.png",
   },
-  { language: 'zh', routePath: '/zh/resources/', outputName: 'zh-resources.png' }
-]
+];
 
 export async function ensureDirectory(targetPath: string) {
-  await fs.mkdir(targetPath, { recursive: true })
+  await fs.mkdir(targetPath, { recursive: true });
 }
 
 export function toAbsoluteSiteUrl(origin: string, routePath: string) {
-  const normalizedOrigin = origin.replace(/\/$/, '')
-  const normalizedRoute = routePath.startsWith('/') ? routePath : `/${routePath}`
-  return `${normalizedOrigin}${docsBasePath.replace(/\/$/, '')}${normalizedRoute}`
+  const normalizedOrigin = origin.replace(/\/$/, "");
+  const normalizedRoute = routePath.startsWith("/")
+    ? routePath
+    : `/${routePath}`;
+  return `${normalizedOrigin}${docsBasePath.replace(/\/$/, "")}${normalizedRoute}`;
 }
 
-export async function discoverCoursePages(language: Language): Promise<CoursePage[]> {
-  const languageRoot = path.resolve(docsRoot, language)
-  const files = await walkMarkdownFiles(languageRoot)
+export async function discoverCoursePages(
+  language: Language,
+): Promise<CoursePage[]> {
+  const languageRoot = path.resolve(docsRoot, language);
+  const files = await walkMarkdownFiles(languageRoot);
 
   return files
-    .filter((filePath) => shouldIncludeInCoursePdf(path.relative(languageRoot, filePath).replace(/\\/g, '/')))
+    .filter((filePath) =>
+      shouldIncludeInCoursePdf(
+        path.relative(languageRoot, filePath).replace(/\\/g, "/"),
+      ),
+    )
     .sort((left, right) => compareCourseFiles(language, left, right))
     .map((filePath) => ({
       filePath,
       routePath: sourceFileToRoutePath(language, filePath),
-      titleHint: path.basename(filePath, '.md')
-    }))
+      titleHint: path.basename(filePath, ".md"),
+    }));
 }
 
 export async function startStaticServer(rootDir = distRoot) {
   const server = http.createServer(async (request, response) => {
     try {
-      const requestUrl = new URL(request.url || '/', 'http://127.0.0.1')
-      const filePath = resolveStaticFilePath(rootDir, requestUrl.pathname)
+      const requestUrl = new URL(request.url || "/", "http://127.0.0.1");
+      const filePath = resolveStaticFilePath(rootDir, requestUrl.pathname);
 
       if (!filePath) {
-        response.statusCode = 404
-        response.end('Not Found')
-        return
+        response.statusCode = 404;
+        response.end("Not Found");
+        return;
       }
 
-      const data = await fs.readFile(filePath)
-      const ext = path.extname(filePath)
-      response.setHeader('Content-Type', MIME_TYPES[ext] || 'application/octet-stream')
-      response.end(data)
+      const data = await fs.readFile(filePath);
+      const ext = path.extname(filePath);
+      response.setHeader(
+        "Content-Type",
+        MIME_TYPES[ext] || "application/octet-stream",
+      );
+      response.end(data);
     } catch (error) {
-      response.statusCode = 500
-      response.end(error instanceof Error ? error.message : 'Unknown server error')
+      response.statusCode = 500;
+      response.end(
+        error instanceof Error ? error.message : "Unknown server error",
+      );
     }
-  })
+  });
 
   const address = await new Promise<http.AddressInfo>((resolve, reject) => {
-    server.once('error', reject)
-    server.listen(0, '127.0.0.1', () => {
-      const currentAddress = server.address()
-      if (!currentAddress || typeof currentAddress === 'string') {
-        reject(new Error('Failed to bind static export server'))
-        return
+    server.once("error", reject);
+    server.listen(0, "127.0.0.1", () => {
+      const currentAddress = server.address();
+      if (!currentAddress || typeof currentAddress === "string") {
+        reject(new Error("Failed to bind static export server"));
+        return;
       }
-      resolve(currentAddress)
-    })
-  })
+      resolve(currentAddress);
+    });
+  });
 
   return {
     origin: `http://127.0.0.1:${address.port}`,
@@ -124,112 +148,118 @@ export async function startStaticServer(rootDir = distRoot) {
       await new Promise<void>((resolve, reject) => {
         server.close((error) => {
           if (error) {
-            reject(error)
-            return
+            reject(error);
+            return;
           }
-          resolve()
-        })
-      })
-  }
+          resolve();
+        });
+      }),
+  };
 }
 
 function normalizeBasePath(input: string) {
-  const withLeadingSlash = input.startsWith('/') ? input : `/${input}`
-  return withLeadingSlash.endsWith('/') ? withLeadingSlash : `${withLeadingSlash}/`
+  const withLeadingSlash = input.startsWith("/") ? input : `/${input}`;
+  return withLeadingSlash.endsWith("/")
+    ? withLeadingSlash
+    : `${withLeadingSlash}/`;
 }
 
 async function walkMarkdownFiles(targetDir: string): Promise<string[]> {
-  const entries = await fs.readdir(targetDir, { withFileTypes: true })
+  const entries = await fs.readdir(targetDir, { withFileTypes: true });
   const nested = await Promise.all(
     entries.map(async (entry) => {
-      const fullPath = path.join(targetDir, entry.name)
+      const fullPath = path.join(targetDir, entry.name);
       if (entry.isDirectory()) {
-        return await walkMarkdownFiles(fullPath)
+        return await walkMarkdownFiles(fullPath);
       }
-      if (entry.isFile() && entry.name.endsWith('.md')) {
-        return [fullPath]
+      if (entry.isFile() && entry.name.endsWith(".md")) {
+        return [fullPath];
       }
-      return []
-    })
-  )
+      return [];
+    }),
+  );
 
-  return nested.flat()
+  return nested.flat();
 }
 
 function shouldIncludeInCoursePdf(relativePath: string) {
-  if (relativePath.includes('/code/')) return false
-  if (relativePath === 'index.md') return true
-  if (relativePath.startsWith('lectures/')) return true
-  if (relativePath.startsWith('projects/')) return true
-  if (relativePath === 'resources/index.md') return true
-  if (relativePath === 'resources/templates/index.md') return true
-  if (relativePath.startsWith('resources/reference/')) return true
-  if (relativePath.startsWith('resources/openai-advanced/')) return true
-  return false
+  if (relativePath.includes("/code/")) return false;
+  if (relativePath === "index.md") return true;
+  if (relativePath.startsWith("lectures/")) return true;
+  if (relativePath.startsWith("projects/")) return true;
+  if (relativePath === "resources/index.md") return true;
+  if (relativePath === "resources/templates/index.md") return true;
+  if (relativePath.startsWith("resources/reference/")) return true;
+  if (relativePath.startsWith("resources/openai-advanced/")) return true;
+  return false;
 }
 
 function compareCourseFiles(language: Language, left: string, right: string) {
-  const languageRoot = path.resolve(docsRoot, language)
-  const leftRelative = path.relative(languageRoot, left).replace(/\\/g, '/')
-  const rightRelative = path.relative(languageRoot, right).replace(/\\/g, '/')
-  const leftWeight = sortWeight(leftRelative)
-  const rightWeight = sortWeight(rightRelative)
-  if (leftWeight !== rightWeight) return leftWeight - rightWeight
-  return leftRelative.localeCompare(rightRelative)
+  const languageRoot = path.resolve(docsRoot, language);
+  const leftRelative = path.relative(languageRoot, left).replace(/\\/g, "/");
+  const rightRelative = path.relative(languageRoot, right).replace(/\\/g, "/");
+  const leftWeight = sortWeight(leftRelative);
+  const rightWeight = sortWeight(rightRelative);
+  if (leftWeight !== rightWeight) return leftWeight - rightWeight;
+  return leftRelative.localeCompare(rightRelative);
 }
 
 function sortWeight(relativePath: string) {
-  if (relativePath === 'index.md') return 0
-  if (relativePath.startsWith('lectures/')) return 1
-  if (relativePath.startsWith('projects/')) return 2
-  if (relativePath === 'resources/index.md') return 3
-  if (relativePath.startsWith('resources/templates/')) return 4
-  if (relativePath.startsWith('resources/reference/')) return 5
-  if (relativePath.startsWith('resources/openai-advanced/')) return 6
-  return 99
+  if (relativePath === "index.md") return 0;
+  if (relativePath.startsWith("lectures/")) return 1;
+  if (relativePath.startsWith("projects/")) return 2;
+  if (relativePath === "resources/index.md") return 3;
+  if (relativePath.startsWith("resources/templates/")) return 4;
+  if (relativePath.startsWith("resources/reference/")) return 5;
+  if (relativePath.startsWith("resources/openai-advanced/")) return 6;
+  return 99;
 }
 
 function sourceFileToRoutePath(language: Language, filePath: string) {
-  const languageRoot = path.resolve(docsRoot, language)
-  const relativePath = path.relative(languageRoot, filePath).replace(/\\/g, '/')
+  const languageRoot = path.resolve(docsRoot, language);
+  const relativePath = path
+    .relative(languageRoot, filePath)
+    .replace(/\\/g, "/");
 
-  if (relativePath === 'index.md') {
-    return `/${language}/`
+  if (relativePath === "index.md") {
+    return `/${language}/`;
   }
 
-  if (relativePath.endsWith('/index.md')) {
-    return `/${language}/${relativePath.slice(0, -'index.md'.length)}`
+  if (relativePath.endsWith("/index.md")) {
+    return `/${language}/${relativePath.slice(0, -"index.md".length)}`;
   }
 
-  return `/${language}/${relativePath.replace(/\.md$/, '')}`
+  return `/${language}/${relativePath.replace(/\.md$/, "")}`;
 }
 
 function resolveStaticFilePath(rootDir: string, pathname: string) {
-  const normalizedPath = pathname.replace(/\/+/g, '/')
+  const normalizedPath = pathname.replace(/\/+/g, "/");
   if (!normalizedPath.startsWith(docsBasePath)) {
-    return null
+    return null;
   }
 
-  const relativePath = normalizedPath.slice(docsBasePath.length).replace(/^\/+/, '')
-  const candidates = buildPathCandidates(rootDir, relativePath)
-  return candidates.find((candidate) => existsSync(candidate)) || null
+  const relativePath = normalizedPath
+    .slice(docsBasePath.length)
+    .replace(/^\/+/, "");
+  const candidates = buildPathCandidates(rootDir, relativePath);
+  return candidates.find((candidate) => existsSync(candidate)) || null;
 }
 
 function buildPathCandidates(rootDir: string, relativePath: string) {
   if (!relativePath) {
-    return [path.join(rootDir, 'index.html')]
+    return [path.join(rootDir, "index.html")];
   }
 
-  if (relativePath.endsWith('/')) {
-    return [path.join(rootDir, relativePath, 'index.html')]
+  if (relativePath.endsWith("/")) {
+    return [path.join(rootDir, relativePath, "index.html")];
   }
 
   if (path.extname(relativePath)) {
-    return [path.join(rootDir, relativePath)]
+    return [path.join(rootDir, relativePath)];
   }
 
   return [
     path.join(rootDir, `${relativePath}.html`),
-    path.join(rootDir, relativePath, 'index.html')
-  ]
+    path.join(rootDir, relativePath, "index.html"),
+  ];
 }
diff --git a/scripts/new-course.mjs b/scripts/new-course.mjs
new file mode 100644
index 00000000..8c3ebef5
--- /dev/null
+++ b/scripts/new-course.mjs
@@ -0,0 +1,367 @@
+import fs from "node:fs";
+import path from "node:path";
+import process from "node:process";
+import { execSync } from "node:child_process";
+
+const repoRoot = process.cwd();
+const coursesDir = path.join(repoRoot, "courses");
+
+function printUsage() {
+  console.log("Usage:");
+  console.log("  npm run course:new -- <course-slug> [Course Title]");
+}
+
+function toTitleCase(slug) {
+  return slug
+    .split("-")
+    .filter(Boolean)
+    .map((part) => part.charAt(0).toUpperCase() + part.slice(1))
+    .join(" ");
+}
+
+function toCourseDescription(title) {
+  return `A customizable course built with the course-builder platform for ${title}.`;
+}
+
+function escapeForJs(value) {
+  return value.replaceAll("\\", "\\\\").replaceAll("'", "\\'");
+}
+
+function getRepoTreeUrl() {
+  try {
+    const remoteUrl = execSync("git remote get-url origin", {
+      cwd: repoRoot,
+      encoding: "utf8",
+    }).trim();
+
+    if (remoteUrl.startsWith("https://github.com/")) {
+      return `${remoteUrl.replace(/\.git$/, "")}/tree/main`;
+    }
+
+    const sshMatch = remoteUrl.match(/^git@github\.com:(.+?)(?:\.git)?$/);
+    if (sshMatch) {
+      return `https://github.com/${sshMatch[1]}/tree/main`;
+    }
+  } catch {
+    // Fall back to the placeholder repository URL below.
+  }
+
+  return "https://github.com/your-org/course-builder/tree/main";
+}
+
+function buildManifest({ title, description, repoTreeUrl }) {
+  return `const courseManifest = {
+  site: {
+    title: '${escapeForJs(title)}',
+    description:
+      '${escapeForJs(description)}',
+    base: '/course-builder/',
+    repoTreeUrl: '${escapeForJs(repoTreeUrl)}'
+  },
+  brand: {
+    logo:
+      'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%231A7F64" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M6 18L12 6l6 12"/><path d="M8.5 13h7"/></svg>'
+  },
+  theme: {
+    fontStylesheets: [
+      'https://fonts.googleapis.com/css2?family=Newsreader:opsz,wght@6..72,400;6..72,600&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap'
+    ],
+    typography: {
+      body:
+        "'Plus Jakarta Sans', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif",
+      heading:
+        "'Newsreader', ui-serif, Georgia, Cambria, 'Times New Roman', Times, serif",
+      mono:
+        "'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace",
+      mermaid: "'Plus Jakarta Sans', sans-serif"
+    },
+    layout: {
+      maxWidth: '1280px',
+      sidebarWidth: '280px',
+      cardRadius: '14px'
+    },
+    effects: {
+      featureShadow: '0 18px 48px rgba(26, 127, 100, 0.14)',
+      featureShadowDark: '0 18px 48px rgba(0, 0, 0, 0.4)'
+    },
+    colors: {
+      light: {
+        bg: '#F6FBF8',
+        bgAlt: '#ECF5F0',
+        bgElevated: '#FFFFFF',
+        bgSoft: '#ECF5F0',
+        text1: '#142019',
+        text2: '#355244',
+        text3: '#5B7669',
+        brand1: '#1A7F64',
+        brand2: '#126A53',
+        brand3: '#0B5542',
+        brandSoft: 'rgba(26, 127, 100, 0.12)',
+        divider: 'rgba(8, 32, 20, 0.1)',
+        sidebarBg: '#ECF5F0',
+        navBg: '#F6FBF8'
+      },
+      dark: {
+        bg: '#0E1712',
+        bgAlt: '#0A120D',
+        bgElevated: '#17221C',
+        bgSoft: '#0A120D',
+        text1: '#E7F2EC',
+        text2: '#B7CEC1',
+        text3: '#87A294',
+        brand1: '#49AF8B',
+        brand2: '#329675',
+        brand3: '#24775D',
+        brandSoft: 'rgba(73, 175, 139, 0.16)',
+        divider: 'rgba(255, 255, 255, 0.12)',
+        sidebarBg: '#0A120D',
+        navBg: '#0E1712'
+      }
+    }
+  },
+  locales: [
+    {
+      key: 'en',
+      label: 'English',
+      lang: 'en',
+      labels: {
+        lectures: 'Modules',
+        projects: 'Projects',
+        resources: 'Resources',
+        skills: 'Guides',
+        resourceLibrary: 'Resource Library',
+        tryHarness: 'Open Templates ↗'
+      }
+    }
+  ],
+  curriculum: {
+    en: {
+      lectures: [
+        { text: 'Welcome', link: '/en/' },
+        { text: 'Module 1', link: '/en/lectures/module-01/' },
+        { text: 'Module 2', link: '/en/lectures/module-02/' }
+      ],
+      projects: [
+        { text: 'Overview', link: '/en/projects/' },
+        { text: 'Project 1', link: '/en/projects/project-01/' }
+      ],
+      resources: [
+        { text: 'Overview', link: '/en/resources/' },
+        { text: 'Templates', link: '/en/resources/templates/' },
+        { text: 'Reference', link: '/en/resources/reference/' },
+        { text: 'Advanced', link: '/en/resources/openai-advanced/' }
+      ],
+      skills: [{ text: 'Guides', link: '/en/skills/' }]
+    }
+  },
+  homeByLocale: {
+    en: {
+      hero: {
+        title: 'Welcome to ${escapeForJs(title)}',
+        intro: [
+          'This is a scaffolded course created by course-builder.',
+          'Use this starter to replace the sample modules, projects, and resources with your own curriculum.'
+        ],
+        references: [
+          {
+            label: 'Builder repository',
+            href: '${escapeForJs(repoTreeUrl.replace(/\/tree\/main$/, ""))}'
+          }
+        ]
+      },
+      sections: {
+        start: 'Start here',
+        mechanism: 'Course map',
+        learn: 'You will cover',
+        next: 'Next steps'
+      },
+      startText:
+        'This starter course is intentionally minimal so you can adapt it quickly.',
+      cards: [
+        {
+          title: 'Modules',
+          body: 'Teach the core ideas in a few compact lessons.',
+          href: './lectures/module-01/'
+        },
+        {
+          title: 'Projects',
+          body: 'Add hands-on work that proves understanding.',
+          href: './projects/'
+        },
+        {
+          title: 'Resources',
+          body: 'Keep templates, references, and supporting material together.',
+          href: './resources/'
+        }
+      ],
+      mechanismText:
+        'A good course structure connects concept, practice, and reusable material.',
+      mechanismMermaid: \`graph LR
+        A["Concept"] --> B["Practice"]
+        B --> C["Reference"]
+        C --> D["Iteration"]\`,
+      learnItems: [
+        'Customize the branding and messaging.',
+        'Replace the sample curriculum with your own structure.',
+        'Add markdown content under courses/<slug>/docs.'
+      ],
+      nextIntro: 'Replace these sample entry points with your real course flow.',
+      nextSteps: [
+        {
+          title: 'Module 1',
+          description: 'Start by replacing the first module.',
+          href: './lectures/module-01/'
+        },
+        {
+          title: 'Project 1',
+          description: 'Add the first applied exercise.',
+          href: './projects/project-01/'
+        }
+      ]
+    }
+  }
+};
+
+export default courseManifest;
+`;
+}
+
+function buildRootIndex() {
+  return `---
+layout: page
+---
+
+<script setup>
+if (typeof window !== "undefined") {
+  const base = import.meta.env.BASE_URL || "/";
+  window.location.replace(\`\${base}en/\`);
+}
+</script>
+
+<div style="display:flex;min-height:60vh;align-items:center;justify-content:center;">
+  <p>Loading...</p>
+</div>
+`;
+}
+
+function buildFileMap(title) {
+  return new Map([
+    ["index.md", buildRootIndex()],
+    ["en/index.md", "<CourseHome />\n"],
+    [
+      "en/lectures/module-01/index.md",
+      `# Module 1
+
+Introduce the first core concept for ${title}.
+
+## Goal
+
+Explain what learners should understand after this module.
+`,
+    ],
+    [
+      "en/lectures/module-02/index.md",
+      `# Module 2
+
+Use this module to deepen the course after the opening lesson.
+`,
+    ],
+    [
+      "en/projects/index.md",
+      `# Projects
+
+Use projects to turn the course material into real output.
+`,
+    ],
+    [
+      "en/projects/project-01/index.md",
+      `# Project 1
+
+Define the first practical exercise for ${title}.
+`,
+    ],
+    [
+      "en/resources/index.md",
+      `# Resources
+
+Keep templates, references, and extra material here.
+`,
+    ],
+    [
+      "en/resources/templates/index.md",
+      `# Templates
+
+Add copy-ready assets that students can reuse directly.
+`,
+    ],
+    [
+      "en/resources/reference/index.md",
+      `# Reference
+
+Store short supporting notes, definitions, and checklists here.
+`,
+    ],
+    [
+      "en/resources/openai-advanced/index.md",
+      `# Advanced
+
+Use this section for deeper material once the core course is stable.
+`,
+    ],
+    [
+      "en/skills/index.md",
+      `# Guides
+
+Use this section for operating guides, playbooks, or reusable teaching aids.
+`,
+    ],
+  ]);
+}
+
+const args = process.argv.slice(2);
+const slug = args[0];
+const title = args.slice(1).join(" ").trim() || (slug ? toTitleCase(slug) : "");
+
+if (!slug) {
+  printUsage();
+  process.exit(1);
+}
+
+if (!/^[a-z0-9]+(?:-[a-z0-9]+)*$/.test(slug)) {
+  console.error(`Invalid course slug: ${slug}`);
+  console.error("Use lowercase letters, numbers, and hyphens only.");
+  process.exit(1);
+}
+
+const courseDir = path.join(coursesDir, slug);
+if (fs.existsSync(courseDir)) {
+  console.error(`Course already exists: courses/${slug}`);
+  process.exit(1);
+}
+
+const docsDir = path.join(courseDir, "docs");
+fs.mkdirSync(docsDir, { recursive: true });
+
+for (const [relativePath, contents] of buildFileMap(title)) {
+  const targetPath = path.join(docsDir, relativePath);
+  fs.mkdirSync(path.dirname(targetPath), { recursive: true });
+  fs.writeFileSync(targetPath, contents, "utf8");
+}
+
+fs.writeFileSync(
+  path.join(courseDir, "course.manifest.mjs"),
+  buildManifest({
+    title,
+    description: toCourseDescription(title),
+    repoTreeUrl: getRepoTreeUrl(),
+  }),
+  "utf8",
+);
+
+console.log(`Created course scaffold: courses/${slug}`);
+console.log(`Title: ${title}`);
+console.log("");
+console.log("Next steps:");
+console.log(`- npm run course:activate -- ${slug}`);
+console.log(`- edit courses/${slug}/course.manifest.mjs`);
+console.log(`- replace the sample markdown under courses/${slug}/docs`);
diff --git a/scripts/set-active-course.mjs b/scripts/set-active-course.mjs
index 443d4c27..d4c18057 100644
--- a/scripts/set-active-course.mjs
+++ b/scripts/set-active-course.mjs
@@ -4,7 +4,10 @@ import process from "node:process";
 
 const repoRoot = process.cwd();
 const coursesDir = path.join(repoRoot, "courses");
-const activeCourseFile = path.join(repoRoot, "docs/.vitepress/active-course.mjs");
+const activeCourseFile = path.join(
+  repoRoot,
+  "docs/.vitepress/active-course.mjs",
+);
 
 function listCourseSlugs() {
   if (!fs.existsSync(coursesDir)) return [];
@@ -13,7 +16,9 @@ function listCourseSlugs() {
     .readdirSync(coursesDir, { withFileTypes: true })
     .filter((entry) => entry.isDirectory())
     .map((entry) => entry.name)
-    .filter((slug) => fs.existsSync(path.join(coursesDir, slug, "course.manifest.mjs")))
+    .filter((slug) =>
+      fs.existsSync(path.join(coursesDir, slug, "course.manifest.mjs")),
+    )
     .sort();
 }
 
@@ -21,6 +26,8 @@ function buildActiveCourseModule(slug) {
   return `import courseManifest from "../../courses/${slug}/course.manifest.mjs";
 
 export const ACTIVE_COURSE_SLUG = "${slug}";
+export const ACTIVE_COURSE_CONTENT_DIR = "../courses/${slug}/docs";
+export const ACTIVE_COURSE_REPO_CONTENT_PREFIX = "courses/${slug}/docs";
 
 export default courseManifest;
 `;
@@ -61,5 +68,12 @@ if (!availableCourses.includes(slug)) {
   process.exit(1);
 }
 
+const courseDocsDir = path.join(coursesDir, slug, "docs");
+
+if (!fs.existsSync(courseDocsDir)) {
+  console.error(`Course is missing docs directory: courses/${slug}/docs`);
+  process.exit(1);
+}
+
 fs.writeFileSync(activeCourseFile, buildActiveCourseModule(slug), "utf8");
 console.log(`Active course set to: ${slug}`);
diff --git a/tests/course-branding.test.mjs b/tests/course-branding.test.mjs
index 6708cee1..cc0ef460 100644
--- a/tests/course-branding.test.mjs
+++ b/tests/course-branding.test.mjs
@@ -3,26 +3,30 @@ import assert from "node:assert/strict";
 
 import bootcampManifest from "../courses/agent-ops-bootcamp/course.manifest.mjs";
 import courseManifest from "../docs/.vitepress/course.manifest.mjs";
-import { ACTIVE_COURSE_SLUG } from "../docs/.vitepress/active-course.mjs";
+import {
+  ACTIVE_COURSE_CONTENT_DIR,
+  ACTIVE_COURSE_REPO_CONTENT_PREFIX,
+  ACTIVE_COURSE_SLUG,
+} from "../docs/.vitepress/active-course.mjs";
 import courseConfig from "../docs/.vitepress/course.config.mjs";
 import {
   buildCourseCssTokens,
   buildFontStylesheetLinks,
-  buildMermaidThemeVariables
+  buildMermaidThemeVariables,
 } from "../docs/.vitepress/course-branding.mjs";
 import {
   getCourseHome,
-  resolveCourseLocale
+  resolveCourseLocale,
 } from "../docs/.vitepress/course-content.mjs";
 import {
   buildLocaleThemeConfig,
-  createLocaleDefinition
+  createLocaleDefinition,
 } from "../docs/.vitepress/course-navigation.mjs";
 import { getLocaleSourceItems } from "../docs/.vitepress/course-curriculum.mjs";
 import {
   createEnglishLocaleMeta,
   createLabels,
-  createSourceItems
+  createSourceItems,
 } from "./helpers/fixtures.mjs";
 
 test("course config exposes the minimum whitelabel surface", () => {
@@ -44,13 +48,21 @@ test("course manifest centralizes product config in one source", () => {
   assert.ok(courseManifest.curriculum.en);
   assert.ok(courseManifest.homeByLocale.en);
   assert.equal(typeof ACTIVE_COURSE_SLUG, "string");
+  assert.match(ACTIVE_COURSE_CONTENT_DIR, /^\.\.\/courses\/.+\/docs$/);
+  assert.equal(
+    ACTIVE_COURSE_REPO_CONTENT_PREFIX,
+    `courses/${ACTIVE_COURSE_SLUG}/docs`,
+  );
 });
 
 test("platform can load a second course manifest with distinct branding and curriculum", () => {
   assert.equal(bootcampManifest.site.title, "Agent Ops Bootcamp");
-  assert.equal(bootcampManifest.site.base, "/agent-ops-bootcamp/");
+  assert.equal(bootcampManifest.site.base, "/course-builder/");
   assert.equal(bootcampManifest.locales[0].labels.lectures, "Modules");
-  assert.equal(bootcampManifest.curriculum.en.projects[1].text, "Incident Drill");
+  assert.equal(
+    bootcampManifest.curriculum.en.projects[1].text,
+    "Incident Drill",
+  );
   assert.equal(bootcampManifest.homeByLocale.en.cards[0].title, "Modules");
 });
 
@@ -62,26 +74,47 @@ test("buildFontStylesheetLinks converts font urls into VitePress head tags", ()
     "link",
     {
       rel: "stylesheet",
-      href: courseConfig.theme.fontStylesheets[0]
-    }
+      href: courseConfig.theme.fontStylesheets[0],
+    },
   ]);
 });
 
 test("buildCourseCssTokens maps branding into CSS custom properties", () => {
   const tokens = buildCourseCssTokens(courseConfig);
 
-  assert.equal(tokens["--course-font-body"], courseConfig.theme.typography.body);
-  assert.equal(tokens["--course-font-heading"], courseConfig.theme.typography.heading);
-  assert.equal(tokens["--course-light-brand-1"], courseConfig.theme.colors.light.brand1);
-  assert.equal(tokens["--course-dark-brand-1"], courseConfig.theme.colors.dark.brand1);
-  assert.equal(tokens["--course-sidebar-width"], courseConfig.theme.layout.sidebarWidth);
+  assert.equal(
+    tokens["--course-font-body"],
+    courseConfig.theme.typography.body,
+  );
+  assert.equal(
+    tokens["--course-font-heading"],
+    courseConfig.theme.typography.heading,
+  );
+  assert.equal(
+    tokens["--course-light-brand-1"],
+    courseConfig.theme.colors.light.brand1,
+  );
+  assert.equal(
+    tokens["--course-dark-brand-1"],
+    courseConfig.theme.colors.dark.brand1,
+  );
+  assert.equal(
+    tokens["--course-sidebar-width"],
+    courseConfig.theme.layout.sidebarWidth,
+  );
 });
 
 test("buildMermaidThemeVariables uses course colors and fonts", () => {
   const mermaidTheme = buildMermaidThemeVariables(courseConfig);
 
-  assert.equal(mermaidTheme.primaryColor, courseConfig.theme.colors.light.bgAlt);
-  assert.equal(mermaidTheme.primaryTextColor, courseConfig.theme.colors.light.text1);
+  assert.equal(
+    mermaidTheme.primaryColor,
+    courseConfig.theme.colors.light.bgAlt,
+  );
+  assert.equal(
+    mermaidTheme.primaryTextColor,
+    courseConfig.theme.colors.light.text1,
+  );
   assert.equal(mermaidTheme.lineColor, courseConfig.theme.colors.light.text3);
   assert.equal(mermaidTheme.fontFamily, courseConfig.theme.typography.mermaid);
 });
@@ -96,13 +129,19 @@ test("resolveCourseLocale falls back to english when locale is missing", () => {
 test("getCourseHome returns localized course landing content", () => {
   const englishHome = getCourseHome("en");
 
-  assert.equal(englishHome.hero.title, courseManifest.homeByLocale.en.hero.title);
+  assert.equal(
+    englishHome.hero.title,
+    courseManifest.homeByLocale.en.hero.title,
+  );
   assert.ok(englishHome.cards.length >= 3);
   assert.ok(englishHome.nextSteps.length >= 2);
 
   if (courseManifest.homeByLocale.ko) {
     const koreanHome = getCourseHome("ko");
-    assert.equal(koreanHome.hero.title, courseManifest.homeByLocale.ko.hero.title);
+    assert.equal(
+      koreanHome.hero.title,
+      courseManifest.homeByLocale.ko.hero.title,
+    );
   }
 });
 
@@ -114,25 +153,26 @@ test("buildLocaleThemeConfig creates nav and sidebar from labels and source item
     resources: "리소스",
     skills: "스킬",
     resourceLibrary: "리소스 모음",
-    tryHarness: "실습하기 ↗"
+    tryHarness: "실습하기 ↗",
   });
 
   const themeConfig = buildLocaleThemeConfig({
     locale: "ko",
     sourceItems,
     labels,
-    repoTreeUrl: courseConfig.site.repoTreeUrl
+    repoTreeUrl: courseConfig.site.repoTreeUrl,
+    repoContentPrefix: ACTIVE_COURSE_REPO_CONTENT_PREFIX,
   });
 
   assert.equal(themeConfig.nav[0].text, "강의");
   assert.equal(
     themeConfig.nav[0].link,
-    sourceItems.lectures[1].link.replace("/en/", "/ko/")
+    sourceItems.lectures[1].link.replace("/en/", "/ko/"),
   );
   assert.equal(themeConfig.sidebar["/ko/projects/"][0].text, "프로젝트");
   assert.equal(
     themeConfig.nav[4].link,
-    `${courseConfig.site.repoTreeUrl.replace(/\/tree\/main$/, "/blob/main")}/docs/ko/resources/templates/index.md`
+    `${courseConfig.site.repoTreeUrl.replace(/\/tree\/main$/, "/blob/main")}/${ACTIVE_COURSE_REPO_CONTENT_PREFIX}/ko/resources/templates/index.md`,
   );
 });
 
@@ -144,7 +184,7 @@ test("createLocaleDefinition wraps locale metadata with generated theme config",
     resources: "Library",
     skills: "Skills",
     resourceLibrary: "Resource Library",
-    tryHarness: "Try Harness ↗"
+    tryHarness: "Try Harness ↗",
   });
 
   const localeDefinition = createLocaleDefinition({
@@ -152,7 +192,8 @@ test("createLocaleDefinition wraps locale metadata with generated theme config",
     ...createEnglishLocaleMeta(),
     sourceItems,
     labels,
-    repoTreeUrl: courseConfig.site.repoTreeUrl
+    repoTreeUrl: courseConfig.site.repoTreeUrl,
+    repoContentPrefix: ACTIVE_COURSE_REPO_CONTENT_PREFIX,
   });
 
   assert.equal(localeDefinition.label.length > 0, true);
@@ -164,11 +205,20 @@ test("getLocaleSourceItems returns course structure by locale with english fallb
   const english = getLocaleSourceItems("en");
   const fallback = getLocaleSourceItems("pt-BR");
 
-  assert.equal(english.lectures[1].text, courseManifest.curriculum.en.lectures[1].text);
-  assert.equal(fallback.skills[0].text, courseManifest.curriculum.en.skills[0].text);
+  assert.equal(
+    english.lectures[1].text,
+    courseManifest.curriculum.en.lectures[1].text,
+  );
+  assert.equal(
+    fallback.skills[0].text,
+    courseManifest.curriculum.en.skills[0].text,
+  );
 
   if (courseManifest.curriculum.ko) {
     const korean = getLocaleSourceItems("ko");
-    assert.equal(korean.projects[1].text, courseManifest.curriculum.ko.projects[1].text);
+    assert.equal(
+      korean.projects[1].text,
+      courseManifest.curriculum.ko.projects[1].text,
+    );
   }
 });
diff --git a/tests/helpers/fixtures.mjs b/tests/helpers/fixtures.mjs
index eea9e8ad..4918e407 100644
--- a/tests/helpers/fixtures.mjs
+++ b/tests/helpers/fixtures.mjs
@@ -12,11 +12,11 @@ export function createSourceItems() {
   return {
     lectures: [
       { text: faker.lorem.word(), link: "/en/" },
-      { text: lectureTitle, link: `/en/lectures/${lectureSlug}/` }
+      { text: lectureTitle, link: `/en/lectures/${lectureSlug}/` },
     ],
     projects: [{ text: projectTitle, link: "/en/projects/" }],
     resources: [{ text: resourceTitle, link: "/en/resources/" }],
-    skills: [{ text: skillTitle, link: "/en/skills/" }]
+    skills: [{ text: skillTitle, link: "/en/skills/" }],
   };
 }
 
@@ -28,13 +28,13 @@ export function createLabels(overrides = {}) {
     skills: faker.lorem.word(),
     resourceLibrary: faker.lorem.words({ min: 1, max: 2 }),
     tryHarness: `${faker.lorem.words({ min: 1, max: 2 })} ↗`,
-    ...overrides
+    ...overrides,
   };
 }
 
 export function createEnglishLocaleMeta() {
   return {
     label: faker.location.country(),
-    lang: faker.helpers.arrayElement(["en", "en-US", "en-GB"])
+    lang: faker.helpers.arrayElement(["en", "en-US", "en-GB"]),
   };
 }