8d9bb8af5b
- Move slow hooks (go-test-coverage, frontend-type-check) to manual stage - Reduce pre-commit execution time from hanging to ~8 seconds (75% improvement) - Expand Definition of Done with explicit coverage testing requirements - Update all 6 agent modes to verify coverage before task completion - Fix typos in agent files (DEFENITION → DEFINITION) - Fix version mismatch in .version file - Maintain 85% coverage requirement for both backend and frontend - Coverage tests now run via VS Code tasks or manual scripts Verification: All tests pass, coverage maintained at 85%+, CI integrity preserved
113 lines
7.1 KiB
Markdown
113 lines
7.1 KiB
Markdown
# Charon Copilot Instructions
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## Code Quality Guidelines
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Every session should improve the codebase, not just add to it. Actively refactor code you encounter, even outside of your immediate task scope. Think about long-term maintainability and consistency. Make a detailed plan before writing code. Always create unit tests for new code coverage.
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- **DRY**: Consolidate duplicate patterns into reusable functions, types, or components after the second occurrence.
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- **CLEAN**: Delete dead code immediately. Remove unused imports, variables, functions, types, commented code, and console logs.
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- **LEVERAGE**: Use battle-tested packages over custom implementations.
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- **READABLE**: Maintain comments and clear naming for complex logic. Favor clarity over cleverness.
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- **CONVENTIONAL COMMITS**: Write commit messages using `feat:`, `fix:`, `chore:`, `refactor:`, or `docs:` prefixes.
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## 🚨 CRITICAL ARCHITECTURE RULES 🚨
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- **Single Frontend Source**: All frontend code MUST reside in `frontend/`. NEVER create `backend/frontend/` or any other nested frontend directory.
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- **Single Backend Source**: All backend code MUST reside in `backend/`.
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- **No Python**: This is a Go (Backend) + React/TypeScript (Frontend) project. Do not introduce Python scripts or requirements.
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## 🛑 Root Cause Analysis Protocol (MANDATORY)
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**Constraint:** You must NEVER patch a symptom without tracing the root cause.
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If a bug is reported, do NOT stop at the first error message found.
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**The "Context First" Rule:**
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Before proposing ANY code change or fix, you must build a mental map of the feature:
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1. **Entry Point:** Where does the data enter? (API Route / UI Event)
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2. **Transformation:** How is the data modified? (Handlers / Middleware)
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3. **Persistence:** Where is it stored? (DB Models / Files)
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4. **Exit Point:** How is it returned to the user?
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**Anti-Pattern Warning:** - Do not assume the error log is the *cause*; it is often just the *victim* of an upstream failure.
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- If you find an error, search for "upstream callers" to see *why* that data was bad in the first place.
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## Big Picture
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- Charon is a self-hosted web app for managing reverse proxy host configurations with the novice user in mind. Everything should prioritize simplicity, usability, reliability, and security, all rolled into one simple binary + static assets deployment. No external dependencies.
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- Users should feel like they have enterprise-level security and features with zero effort.
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- `backend/cmd/api` loads config, opens SQLite, then hands off to `internal/server`.
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- `internal/config` respects `CHARON_ENV`, `CHARON_HTTP_PORT`, `CHARON_DB_PATH` and creates the `data/` directory.
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- `internal/server` mounts the built React app (via `attachFrontend`) whenever `frontend/dist` exists.
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- Persistent types live in `internal/models`; GORM auto-migrates them.
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## Backend Workflow
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- **Run**: `cd backend && go run ./cmd/api`.
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- **Test**: `go test ./...`.
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- **API Response**: Handlers return structured errors using `gin.H{"error": "message"}`.
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- **JSON Tags**: All struct fields exposed to the frontend MUST have explicit `json:"snake_case"` tags.
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- **IDs**: UUIDs (`github.com/google/uuid`) are generated server-side; clients never send numeric IDs.
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- **Security**: Sanitize all file paths using `filepath.Clean`. Use `fmt.Errorf("context: %w", err)` for error wrapping.
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- **Graceful Shutdown**: Long-running work must respect `server.Run(ctx)`.
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## Frontend Workflow
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- **Location**: Always work within `frontend/`.
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- **Stack**: React 18 + Vite + TypeScript + TanStack Query (React Query).
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- **State Management**: Use `src/hooks/use*.ts` wrapping React Query.
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- **API Layer**: Create typed API clients in `src/api/*.ts` that wrap `client.ts`.
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- **Forms**: Use local `useState` for form fields, submit via `useMutation`, then `invalidateQueries` on success.
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## Cross-Cutting Notes
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- **VS Code Integration**: If you introduce new repetitive CLI actions (e.g., scans, builds, scripts), register them in .vscode/tasks.json to allow for easy manual verification.
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- **Sync**: React Query expects the exact JSON produced by GORM tags (snake_case). Keep API and UI field names aligned.
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- **Migrations**: When adding models, update `internal/models` AND `internal/api/routes/routes.go` (AutoMigrate).
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- **Testing**: All new code MUST include accompanying unit tests.
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- **Ignore Files**: Always check `.gitignore`, `.dockerignore`, and `.codecov.yml` when adding new file or folders.
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## Documentation
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- **Features**: Update `docs/features.md` when adding capabilities.
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- **Links**: Use GitHub Pages URLs (`https://wikid82.github.io/charon/`) for docs and GitHub blob links for repo files.
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## CI/CD & Commit Conventions
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- **Triggers**: Use `feat:`, `fix:`, or `perf:` to trigger Docker builds. `chore:` skips builds.
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- **Beta**: `feature/beta-release` always builds.
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- **History-Rewrite PRs**: If a PR touches files in `scripts/history-rewrite/` or `docs/plans/history_rewrite.md`, the PR description MUST include the history-rewrite checklist from `.github/PULL_REQUEST_TEMPLATE/history-rewrite.md`. This is enforced by CI.
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## ✅ Task Completion Protocol (Definition of Done)
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Before marking an implementation task as complete, perform the following in order:
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1. **Pre-Commit Triage**: Run `pre-commit run --all-files`.
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- If errors occur, **fix them immediately**.
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- If logic errors occur, analyze and propose a fix.
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- Do not output code that violates pre-commit standards.
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2. **Coverage Testing** (MANDATORY - Non-negotiable):
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- **Backend Changes**: Run the VS Code task "Test: Backend with Coverage" or execute `scripts/go-test-coverage.sh`.
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- Minimum coverage: 85% (set via `CHARON_MIN_COVERAGE` or `CPM_MIN_COVERAGE`).
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- If coverage drops below threshold, write additional tests to restore coverage.
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- All tests must pass with zero failures.
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- **Frontend Changes**: Run the VS Code task "Test: Frontend with Coverage" or execute `scripts/frontend-test-coverage.sh`.
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- Minimum coverage: 85% (set via `CHARON_MIN_COVERAGE` or `CPM_MIN_COVERAGE`).
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- If coverage drops below threshold, write additional tests to restore coverage.
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- All tests must pass with zero failures.
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- **Critical**: Coverage tests are NOT run by default pre-commit hooks (they are in manual stage for performance). You MUST run them explicitly via VS Code tasks or scripts before completing any task.
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- **Why**: CI enforces coverage in GitHub Actions. Local verification prevents CI failures and maintains code quality.
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3. **Type Safety** (Frontend only):
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- Run the VS Code task "Lint: TypeScript Check" or execute `cd frontend && npm run type-check`.
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- Fix all type errors immediately. This is non-negotiable.
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- This check is also in manual stage for performance but MUST be run before completion.
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4. **Verify Build**: Ensure the backend compiles and the frontend builds without errors.
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- Backend: `cd backend && go build ./...`
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- Frontend: `cd frontend && npm run build`
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5. **Clean Up**: Ensure no debug print statements or commented-out blocks remain.
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- Remove `console.log`, `fmt.Println`, and similar debugging statements.
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- Delete commented-out code blocks.
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- Remove unused imports.
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