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typecheck runs bun --check --tsconfig-override tsconfig.json, which runs Bun's type checker even though package.json has a check script. It replaces scripts/typecheck.ts, which spawned bun check from the temporary directory to get around that script. The new form needs no helper, prints repository-relative paths and has no shell syntax, so it runs the same on Windows.

A deliberate type error makes bun run typecheck exit 1; bun run check passes locally (128 files). The Windows CI job runs the same script.

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Summary by cubic

Type-checks with bun --check --tsconfig-override tsconfig.json instead of bun scripts/typecheck.ts, and removes the helper script. The old script spawned bun check from a temporary directory to dodge the package.json check script shadowing Bun's built-in. The new command needs no shell syntax, prints repository-relative paths, and behaves the same on Windows.

bun run typecheck still exits 1 on a deliberate type error, and bun run check passes locally (128 files).

^{Written for commit 872b6a6. Summary will update on new commits.}

Summary by CodeRabbit

• Chores
  • Updated the project’s type-checking workflow to use Bun’s built-in check command. This is a development workflow change and does not affect the app’s user-facing features or behavior.

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Repository YAML (base), Organization UI (inherited)
• Review profile: CHILL
• Plan: Advanced
• Run ID: 9aaf2cfa-1ce7-4df8-8fbf-18612c41210a

📥 Commits

Reviewing files that changed from the base of the PR and between 408436a and 872b6a6.

📒 Files selected for processing: 2

• package.json
• scripts/typecheck.ts

💤 Files with no reviewable changes: 1

• scripts/typecheck.ts

Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review.

📝 Walkthrough

The typecheck script now runs Bun’s built-in check command with tsconfig.json. The script no longer uses scripts/typecheck.ts.

Changes: Typecheck command

Layer / File(s)	Summary
Run typecheck directly package.json, scripts/typecheck.ts	The typecheck command now uses bun --check --tsconfig-override tsconfig.json. The wrapper script is deleted.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 872b6

The typecheck command preserves project checking and failure reporting in CI; no concrete merge-blocking risk remains.

### Architecture Summary

Architecture risk: 🔵 Low · up to 872b6

The change affects 2 systems.

Changed systems: package.json, scripts

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — package.json (service) was modified; 1 changed file maps to changed impact.
• observed — scripts (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in package.json: The typecheck command changes from bun scripts/typecheck.ts to bun --check --tsconfig-override tsconfig.json.
• observed — Modified behavior in scripts/typecheck.ts: The script that spawned Bun’s built-in check with the project tsconfig.json, ran it from the temporary directory, forwarded its output streams, and propagated its exit code was deleted.

Pre-merge checks: 6

Check name	Status	Explanation
Title check		The title clearly and concisely identifies the main change: using Bun's type checker and removing the helper script.
Description check		The description explains the implementation, rationale, removed helper, platform behavior, and validation results. It does not include the repository template checklist, but the substantive required i…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Suppressions Explained		The pull request changes only the typecheck script command and deletes the helper. It adds no lint, type-check, formatter suppression directive, or ignore entry.
Interface Changes Documented		The diff changes only the package typecheck script and deletes scripts/typecheck.ts. It does not add, remove, or rename an MCP tool or argument, a swarmail command or flag, or an environment var…

Full details: Description check

Explanation

The description explains the implementation, rationale, removed helper, platform behavior, and validation results. It does not include the repository template checklist, but the substantive required information is mostly present.

Full details: Interface Changes Documented

Explanation

The diff changes only the package typecheck script and deletes scripts/typecheck.ts. It does not add, remove, or rename an MCP tool or argument, a swarmail command or flag, or an environment variable. The documentation updates are therefore not required by this check.

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