feat(tooling): add Claude Code skill for adding release notes

.claude/skills/add-release-notes/SKILL.md

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+---
+name: add-release-notes
+description: Generates a standardized release note description for an issue, commit, or pull request. Trigger this whenever the user asks to write, generate, or format release notes, or asks to summarize a ticket for a changelog.
+---
+
+## Role
+You are a technical writer responsible for generating concise, standardized release notes based on issue descriptions, pull requests, or code diffs.
+
+## The Required Format
+You must strictly follow this exact template for all release notes:
+
+> Before this update, <X problem> caused <Y situation> [OPTIONAL: under the following <Z conditions>]. With this update, <fix> resolves the issue [OPTIONAL: and <agent> can <perform operation> successfully].
+
+## Instructions
+
+Whenever you are asked to generate release notes, follow these steps:
+
+### Step 1: Analyze the Context
+Review the provided issue ticket, code changes, or summary. Identify the following variables:
+* **<X problem>:** The root technical or logical issue (e.g., "a race condition", "an undefined variable").
+* **<Y situation>:** The user-facing symptom or system failure (e.g., "the app to crash", "the login button to become unresponsive").
+* **<Z conditions>** *(Optional)*: Any specific edge cases or environments (e.g., "on iOS devices", "when clicking submit multiple times rapidly").
+* **<fix>:** What was actually changed in the code (e.g., "adding a debounce function", "updating the API payload").
+* **<agent>** *(Optional)*: Who benefits from this (e.g., "administrators", "users").
+* **<perform operation>** *(Optional)*: What they can now do (e.g., "export CSV reports", "log in safely").
+
+### Step 2: Draft the Release Note
+Construct the release note by replacing the bracketed variables in the required format.
+* Ensure the grammar flows naturally.
+* Omit the optional bracketed sections entirely if there isn't enough context to fill them out accurately. Do not include the brackets `[]` or `<>` in your final output.
+
+### Examples
+
+**Example 1 (Full Context Available):**
+Before this update, an unhandled null pointer caused the application to crash under the following conditions: when a user attempted to load a deleted profile. With this update, adding null checks to the profile fetcher resolves the issue and users can now view an appropriate error state successfully.
+
+**Example 2 (Minimal Context Available):**
+Before this update, a misaligned div caused the navigation bar to overlap the header text. With this update, adjusting the CSS padding resolves the issue.
+
+### Step 3: Final Output
+Provide only the final, formatted release note text. Do not include preamble or conversational filler.