Check Boundaries Skill

Audit the x4-mono codebase for convention violations and dependency boundary issues.

Workflow

1. Run ESLint: bun turbo lint to catch boundary violations
2. Check for console.log: Grep for console.log in production code (not test files)
3. Check for any type: Grep for : any and as any in TypeScript files
4. Check for hard-coded env vars: Grep for patterns like process.env. outside env.ts
5. Check import paths: Verify no relative imports cross package boundaries
6. Check file naming: Verify kebab-case for files, PascalCase for components
7. Check for forbidden patterns: Items from the "Do NOT" list in CLAUDE.md
8. Report all violations: Structured output with fix suggestions

Checks

1. Dependency Boundaries

packages/shared/types    → imports NOTHING
packages/shared/utils    → can import: shared/types
packages/database        → can import: shared/types
packages/auth            → can import: database, shared/types
packages/ai-integrations → can import: shared/types
apps/*                   → can import: any package

Critical: Never import from apps/* in packages/*.

2. No console.log

Search for console.log, console.warn, console.error in:

• apps/api/src/ (excluding test files)
• packages/ (excluding test files)

Exceptions: apps/api/src/lib/env.ts (startup validation only)

3. No any Type

Search for : any, as any, <any> in .ts and .tsx files.

4. No Hard-coded Env Vars

Search for process.env. outside of apps/api/src/lib/env.ts.

5. Import Path Conventions

• Cross-package: Must use @packages/* or @x4/*
• Intra-workspace: Must use @/*
• No relative paths crossing package boundaries (e.g., ../../../packages/)

6. File Naming

• Files: kebab-case (user-profile.ts, not userProfile.ts)
• Components: PascalCase exports
• Constants: SCREAMING_SNAKE_CASE

7. Forbidden Patterns

• No Express imports
• No Prisma imports
• No NextAuth/Auth.js imports
• No jest imports (use bun:test)
• No API routes in apps/web (API is in apps/api)

Output Format

## Boundary Check Results

### Summary

- Violations found: N
- Categories: [list]

### Violations

#### [CATEGORY] Description

**File**: path/to/file.ts:line
**Rule**: Which convention was violated
**Fix**: How to fix it

---

### Clean

- [x] ESLint passes
- [x] No console.log in production
- [x] No `any` types
- [x] No hard-coded env vars
- [x] Import paths correct
- [x] File naming correct
- [x] No forbidden patterns