# Contributing to GoClaw

## Branch Strategy

```
main (stable, protected — owner-only merge)
  └── dev (default target for all PRs)
        ├── feat/xxx
        ├── fix/xxx
        └── ...
```

### Rules

1. **All PRs target `dev`** — `main` is frozen for stable releases
2. **Hotfixes** — PR to `main`, then cherry-pick to `dev`
3. **Releases** — owner merges `dev` → `main` when stable
4. **Direct push to `main`** — blocked (ruleset enforced)

### Branch Naming

- `feat/description` — new features
- `fix/description` — bug fixes
- `hotfix/description` — urgent production fixes (target `main`)
- `refactor/description` — code improvements
- `docs/description` — documentation changes

## PR Guidelines

### Before Submitting

```bash
go fix ./...                        # Apply Go upgrades
go build ./...                      # PG build check
go build -tags sqliteonly ./...     # Desktop build check
go vet ./...                        # Static analysis
go test -race ./...                 # Tests with race detector
```

For web UI changes:

```bash
cd ui/web && pnpm build
```

### PR Review Criteria

Based on our automated review checklist:

- **Correctness**: No logic errors, nil dereference, race conditions
- **Security**: Parameterized SQL, no hardcoded secrets, input validation
- **Breaking changes**: API contracts, DB migrations, config format
- **Tenant isolation**: All queries scoped by `tenant_id`. **Admin writes require the correct scope guard** — see section below
- **i18n**: User-facing strings in all 3 locales (en/vi/zh)
- **SQLite parity**: Changes compile with `-tags sqliteonly`
- **Mobile UI**: `h-dvh` not `h-screen`, 16px input fonts, safe areas

### Tenant-Scope Guards

`RoleAdmin` checks role, not tenant. A non-master tenant admin holds `RoleAdmin` in their own tenant and passes role-only middleware. Pick the guard by the **target table**:

| Target | Example | Guard |
|---|---|---|
| **Global** (no `tenant_id` column) | `builtin_tools`, disk config, `pip`/`npm`/`apk` | HTTP `requireMasterScope` · WS `requireMasterScope(requireOwner(...))` |
| **Tenant-scoped** (has `tenant_id` column) | `agents`, `skills`, `llm_providers` | `requireTenantAdmin` + store SQL `WHERE tenant_id = $N` |

Shared predicate: `store.IsMasterScope(ctx)` (`internal/store/context.go`).

**Anti-patterns flagged in review:**
- `store.Update(...)` on a no-`tenant_id` table without a master-scope check upstream
- Write SQL with `WHERE ... (tenant_id = $N OR tenant_id IS NULL)` — the `IS NULL` arm lets tenants reach system rows
- `requireAuth(RoleAdmin)` as the **sole** gate on a global-state write
- Admin revoke/delete handlers that skip pre-fetch ownership verification (store SQL alone is not enough when it matches `IS NULL` arms)

### Multi-attachment coalescing (#63)

Three independent surfaces coalesce burst inbounds so one user action produces
one agent run. Any future surface that fans burst arrivals into the agent loop
MUST honor these eight invariants. Drift on any of them re-introduces the
N-replies bug.

1. **No media bypass.** A message carrying attachments goes through the same
   silence window as text. The pre-fix "publish immediately when media is
   present" shortcut is the original #63 regression — do not reintroduce it.
2. **Media floor.** When attachments are present, the effective window is
   `max(configured, mediaFloor)`. Configured can be 0 (disabled) for text-only
   flows; once media arrives the floor is the lower bound so multi-file
   uploads have time to land.
3. **Per-key buffer.** Buffer key is the smallest tuple that uniquely names
   "this user action in this delivery channel" — `(channel, chatID, senderID,
   agentID)` for the bus debouncer, `(userKey, sessionKey)` for web chat,
   `(chatID, MediaGroupID)` for Telegram albums.
4. **Sender pin on first arrival.** First arrival pins the senderID on the
   buffer. Subsequent arrivals with a mismatched sender are dropped with a
   `security.*_sender_mismatch` warn log. Defense-in-depth against spoofed
   updates; the platform should never reuse a group/session id across senders.
5. **Drop-and-log dual caps.** Per-buffer cap AND global active-buffer cap.
   Overflow logs `*.overflow` with `scope=buffer|global`, drops the
   straggler, and returns false to caller — caller falls through to
   single-message dispatch so no message is silently lost.
6. **AfterFunc + Stop, never Reset.** Use `time.AfterFunc(window, fn)` and
   `timer.Stop()` on every arrival. `time.Timer.Reset()` has a documented
   double-fire race when the timer is mid-fire — banned.
7. **Representative is members[0].** The first arrival's resolved context
   (sender label, content prefix, reply target, topic config) is the one
   that flows downstream on flush. Later arrivals contribute their media
   only.
8. **Synchronous Stop drain.** Shutdown order is `aggregator.Stop()` →
   `pollCancel()` → `handlerWg.Wait()`. Stop synchronously flushes all
   pending buffers BEFORE any context is cancelled so in-flight bursts
   reach the agent loop. Post-Stop pushes are rejected with a warn log.

Surfaces today: `internal/bus/inbound_debounce.go`,
`internal/gateway/methods/chat_debounce.go`,
`internal/channels/telegram/album_aggregator.go`.

## Test Layers

Tests are organized by priority and purpose:

| Layer | Priority | Location | Blocking? | Purpose |
|-------|----------|----------|-----------|---------|
| **Invariants** | P0 | `tests/invariants/` | YES | Tenant isolation, permission enforcement |
| **Contracts** | P1 | `tests/contracts/` | YES | API schema validation |
| **Scenarios** | P2 | `tests/scenarios/` | NO | End-to-end user journeys |
| **Integration** | P1 | `tests/integration/` | YES | DB/pipeline integration |

### Running Tests

```bash
make test              # Unit tests (fast, no DB)
make test-invariants   # P0 invariants (requires pgvector)
make test-contracts    # P1 API contracts (requires server)
make test-scenarios    # P2 scenarios (requires server)
make test-critical     # P0 + P1 (run before merge)
```

### Test Layer Policy

- **P0 failures**: Block PR merge immediately
- **P1 failures**: Block merge, investigate contract breakage
- **P2 failures**: Warning only, may indicate flaky tests or environment issues

When adding new tests:
- Tenant isolation/permissions → `tests/invariants/`
- API response schemas → `tests/contracts/`
- User journeys (multi-step flows) → `tests/scenarios/`

### Commit Messages

Use conventional commits:

```
feat: add user preferences API
fix: prevent race condition in session cleanup
docs: update API reference for v2 endpoints
refactor: extract provider retry logic
```

## Workflow

```
Developer                    Reviewer                 Owner
    │                            │                      │
    ├─ create feat/xxx ──────────┤                      │
    ├─ PR → dev ─────────────────┤                      │
    │                            ├─ review + approve    │
    │                            ├─ CI passes ──────────┤
    │                            │                      ├─ merge to dev
    │                            │                      │
    │                            │        (when stable) ├─ PR dev → main
    │                            │                      ├─ merge → auto release
    │                            │                      │  (semantic-release)
```

## Releases

### Standard (automatic)

Merge `dev` → `main`. `go-semantic-release` analyzes commit messages and auto-creates:
- GitHub Release with version tag (`vX.Y.Z`)
- Cross-platform binaries (linux/darwin × amd64/arm64)
- Docker images (4 variants: latest, base, full, otel + web)
- SHA256 checksums
- Discord notification

### Beta (manual tag)

Push a beta tag from `dev` to create a prerelease:

```bash
# Standard beta — builds Docker + Linux binaries
git tag v2.67.0-beta.1
git push origin v2.67.0-beta.1

# Desktop beta — builds macOS .dmg + Windows .exe
git tag lite-v1.2.0-beta.1
git push origin lite-v1.2.0-beta.1
```

Beta releases are marked as **prerelease** on GitHub and use `:beta` rolling Docker tag.

### Desktop / Lite

Push a `lite-v*` tag to build desktop apps:

```bash
git tag lite-v1.1.0
git push origin lite-v1.1.0
```

Tags with `-beta` or `-rc` suffix automatically create prereleases.