OwnCord/docs/contributing.md

Contributing

How to set up the development environment and contribute to OwnCord.

Development Setup

Prerequisites

Platform	Server	Client
Windows 10+ x64	✅	✅
Linux x64	✅	✅
Linux ARM64	✅	✅ (CI only)

• Go 1.26+ (server)
• Node.js 24+ (client) — pinned in Client/.nvmrc; engine-strict makes a wrong major a hard failure, not a warning
• Rust / Cargo (Tauri client — not needed for server-only work)
• Docker + Compose v2 (optional — alternative to building the server locally)

Available Commands

Root facade — one entry point

From the repository root. These orchestrate the per-stack commands below; they are a convenience, not a replacement. Nothing here needs make, and everything works the same on Windows, macOS and Linux.

Command	Description
npm run bootstrap	npm ci in all three package roots
npm run check	Everything CI gates on: server, client, Rust
npm run check:server	Server only — build variants, vet, race, deadlock, lint, generated-output drift
npm run check:client	Client only — typecheck, lint, format, unit + integration tests
npm run check:rust	Tauri backend — cargo test --lib and clippy
npm run check:docs	Fail if a watched document states a finding count the ledger contradicts
npm run format	Prettier over the client, gofmt -w over the server
npm run generate	Regenerate protocol constants and the sqlc query layer
npm run release:preflight	check plus a client production build
node scripts/run.mjs --list	Print the exact command every task runs, and where

Tools CI installs but you may not have — golangci-lint, sqlc — are skipped with a printed reason rather than failing the run.

Working on the server only? You never need Node. The facade prints each command it runs and the directory it runs it in; those are the commands in the next section, and using them directly is equally correct.

Server (Go)

Command	Description
go build -o chatserver.exe -ldflags "-s -w" .	Build server binary (Windows)
CGO_ENABLED=0 go build -o chatserver -ldflags "-s -w" .	Build server binary (Linux)
go build -tags otel .	Build with OpenTelemetry SDK (requires go get first — see Phase B)
go build -tags wazero .	Build with Wazero plugin runtime (requires go get first — see Phase C)
go test ./...	Run all server tests
go test ./... -cover	Run server tests with coverage
go test -race ./...	Run server tests with race detection

Make targets (run from Server/):

Command	Description
make test	Run the test suite the way CI does (-race, 20 min timeout)
make test-deadlock	Run the deadlock-detection pass CI also runs (-tags deadlock)
make cover	Per-package coverage (what CI uploads) + a function summary
make cover-all	Cross-package coverage — the honest number (also lists 0.0% functions)
make sqlc-install	Install the pinned sqlc version into $GOBIN
make sqlc-generate	Regenerate the type-safe Go query layer (db/dbgen/, SQLite engine)
make sqlc-verify	Fail if the committed dbgen output is stale (used by CI)
make protocol-generate	Regenerate the WS message-type constants (Go + TS) from protocol/schema.json
make protocol-verify	Fail if the committed protocol constants are stale (used by CI)
make otel-up	Start Jaeger (traces) + Prometheus (metrics) via Docker for local OTel development
make otel-down	Stop and remove the OTel dev containers

Client (Tauri v2)

Build & dev

Command	Description
npm run dev	Start Vite dev server with hot reload
npm run build	TypeScript check + Vite production build
npm run tauri dev	Launch Tauri app in dev mode
npm run tauri build	Build release installer (NSIS on Windows, AppImage+deb on Linux)

Tests

Command	Description
npm test	Run all tests (vitest)
npm run test:unit	Unit tests only
npm run test:integration	Integration tests only
npm run test:contract	Cross-component contract tests only
npm run test:e2e	Playwright E2E (mocked Tauri)
npm run test:e2e:native	Playwright E2E (real Tauri exe + CDP)
npm run test:e2e:admin	Playwright E2E (real Go server + SPA)
npm run test:e2e:prod	Playwright E2E (prod build)
npm run test:e2e:ui	Playwright UI mode
npm run test:watch	Vitest watch mode
npm run test:coverage	Coverage report
npm run test:mutate	Stryker mutation testing
npm run test:mutate:dry	Stryker dry-run (no mutations applied)
npm run test:browser	Vitest browser-mode tests

Type checking, linting & formatting

Command	Description
npm run typecheck	Full typecheck (all sources)
npm run typecheck:build	Typecheck build config only
npm run lint	oxlint + ESLint check (src/)
npm run lint:fix	ESLint auto-fix
npm run lint:ox	oxlint only (fast correctness checks)
npm run format	Prettier format (src/ + tests/)
npm run format:check	Prettier check only (no writes)
npm run knip	Dead code and unused export detection

Git hooks (recommended)

Committed hooks in .githooks/ catch the most common CI failures locally. Enable once per clone (from the repo root):

npm run hooks:install    # = git config core.hooksPath .githooks

Hook	What it runs
pre-commit	gofmt + go vet (when Go files staged), oxlint + prettier + tsc --noEmit (when client TS staged), sqlc-verify / protocol-verify (when their inputs staged)
pre-push	Server build in all build-tag variants, client typecheck + type-aware ESLint. Set OWNCORD_PREPUSH_TESTS=1 to also run go test -race ./...

Bypass with --no-verify or OWNCORD_SKIP_HOOKS=1 when needed — CI still enforces everything.

Neither hook needs make, and neither needs Node for the Go checks.

core.hooksPath is exclusive. Once set, Git resolves every hook against .githooks/ and never looks in .git/hooks/ again. .githooks/ holds only pre-commit and pre-push, so hooks:install silently disables any other hook you installed there (post-commit, post-checkout, ...). Nothing warns you. Put it under .githooks/ instead (untracked, so it stays yours), or skip hooks:install and use npm run check before pushing.

Plugin Development

Plugins are WASM modules loaded at runtime when the server is built with -tags wazero. See Server/plugin/examples/hello/README.md for the full plugin ABI and build instructions.

Toolchain requirements for building .wasm plugins with TinyGo:

Tool	Version	Notes
TinyGo	0.40.1	Supports Go 1.19–1.25 only
Go SDK	1.25.x	Install alongside the system Go via go install golang.org/dl/go1.25.3@latest && go1.25.3 download
wasm-opt	Binaryen 129	Required by TinyGo for the wasi target; download from Binaryen GitHub releases

Any WASM toolchain (Rust/wasm32-wasi, AssemblyScript, etc.) that exports the five ABI functions is equally valid — TinyGo is just the example toolchain used by examples/hello/.

---

Branch and PR model

This section is the single source of truth for the branch model. Everywhere else -- the root README.md, CLAUDE.md, the PR template -- summarises it and links here rather than restating it.

• dev -- the integration branch. All contributions target dev.
• main -- releases only. dev is merged to main for a release, and release tags are cut from main.

dev is protected and PR-only: direct pushes are rejected, ten status checks are required, required_approving_review_count is 0, and the rule is enforced on admins. So a PR is self-mergeable once CI is green, but no commit reaches dev without CI having run on it. Settings and rationale live in docs/plans/b0-dev-branch-protection.sh.

Two consequences worth knowing before you open a PR:

• The Docker and Tauri Full Build jobs are gated on main and report as skipped on a PR into dev. That is expected, not a failure.
• Squash merge, and a conventional commit subject on the squashed commit.

Branch Naming

• feature/<name> -- new features
• fix/<name> -- bug fixes
• docs/<name> -- documentation changes

Commit Format

Use conventional commits:

feat: add thread support to channels
fix: prevent duplicate WebSocket connections
refactor: extract permission checks into middleware
docs: update quick-start guide
test: add integration tests for invite flow
chore: bump Go dependencies
perf: cache role permissions in memory
ci: add lint step to GitHub Actions

For anything non-trivial the body carries the reasoning, not a restatement of the diff: what was wrong, why the obvious fix is wrong, what was done, concrete numbers, and a Verified: paragraph proving both directions — that the defect was present before and is absent after.

End with an explicit Not included: line naming adjacent scope you deliberately left out, and why. A written deferral is a deliverable: it is what separates considered-and-declined from silently-missed, and it means adjacent work you spotted mid-change does not have to become either scope creep or a blocking question. Put it in the commit that noticed it.

Pull Request Process

See Branch and PR model above for what to branch from and target.

1. Branch from dev
2. Open the PR against dev
3. All ten required checks must pass -- dev is protected, so a red PR cannot merge
4. Request code review
5. Squash merge, conventional commit subject

Testing

The client suite enforces 70% coverage thresholds in vitest.config.ts; the Go suite has deliberately no floor (T-2026-07-25-19) — use make cover-all to see the honest cross-package number. Follow a test-driven workflow and never lower a threshold to make a change fit.

Tiers

Tier	Command	CI job	Blocking
Client/tests/unit	npm run test:unit	Client Unit Tests	yes
Client/tests/integration	npm run test:integration	Client Unit Tests	yes
Client/tests/contract	npm run test:contract	Client Unit Tests	yes
Client/tests/browser	npm run test:browser	—	no
Client/tests/e2e	npm run test:e2e	Client E2E (Playwright)	yes
Client/tests/e2e @parity	—	Client E2E (parity subset, blocking)	yes
Client/tests/e2e/native	npm run test:e2e:native	—	no
Client/tests/e2e/admin	npm run test:e2e:admin	Admin Panel E2E (real server, non-blocking)	no
Server/**/*_test.go	make test	Server Build & Test	yes
Client/src-tauri	cargo test --lib	Rust Unit Tests	yes

npm test — not npm run test:unit — is what CI runs and what npm run check:client invokes, so it is the command that covers tests/contract.

What belongs in tests/contract

A test is a contract test when its assertions read, import or execute an artifact owned by a different top-level component (Server/, Client/, root protocol/) than the one its runner lives in. A comment referencing the other side does not count.

1. Placement follows capability, not ownership. A contract test lives in the tier whose runtime can execute or parse the artifact. If the owning component can execute it, it stays in that component's own suite — Server/updater/tauri_key_contract_test.go reads Client/src-tauri/tauri.conf.json and stays in Go, because Go parses JSON fine and the assertion is about a server constant.
2. Ownership is declared in the name, never in the directory. The file name and the top-level describe/Test name must name the owned artifact's path.
3. A contract test may only live in a blocking tier. A non-blocking job is not coverage. Admin Panel E2E is continue-on-error: true (.github/workflows/ci.yml), so it is ineligible however well it fits topically — until it graduates.
4. Client/ is one component: its TypeScript frontend and its thin Rust backend in src-tauri/ are the same side of the boundary, so a tests/unit test that reads src-tauri/tauri.conf.json is an ordinary unit test. The same goes for a Go test reading its own package's embedded assets (Server/admin/perm_grid_test.go).

E2E is runtime coupling rather than artifact coupling; it stays in tests/e2e.

If a tier ever gains a runner of its own, model its anti-vacuity guard on Server/invariants/invariants_test.go — it fails loudly when a configured scope resolves to nothing, rather than passing on an empty set.

Code Style

• TypeScript: See Client Architecture
• Go: gofmt + golangci-lint, standard library preferred
• Rust: cargo fmt + cargo clippy, minimal code (native APIs only)

Dependency Policy

The policy behind what the lockfiles already enforce (decided 2026-08-05, closing audit findings 2026-04-07 #8 / DC-11):

• Lockfiles are authoritative. package-lock.json, go.sum and Cargo.lock pin every transitive dependency; CI installs only from them (npm ci, module/registry verification — never a bare npm install in CI or hooks). package.json keeps ordinary caret ranges: exact-pinning it would duplicate what the lockfile does while making every security patch a manual edit.

• Upgrades arrive as reviewed PRs, not ambient drift. Dependabot runs weekly per ecosystem (.github/dependabot.yml) with semver-major updates ignored across the board — majors are adopted deliberately, by a human, reading the changelog. Peer-coupled groups (vitest/@vitest/*, @stryker-mutator/*) update as one PR so exact peer pins cannot wedge.

• Security gates run on every PR: npm audit --omit=dev --audit-level=high (shipped deps only — dev-tooling advisories are triaged in the workflow comment instead of blocking on unfixable pins), govulncheck for Go, cargo audit for Rust, and knip refuses unused client dependencies outright.

• Version skew is pinned at the toolchain level too: Client/.nvmrc, every actions/setup-node in CI, and an engines block in all three package.json files say Node 24 — with engine-strict=true in each package's .npmrc, so a wrong major fails the install instead of warning. Server/sqlc.version pins sqlc, Go pins via go.mod (GOTOOLCHAIN=auto), and GitHub Actions are SHA-pinned with Dependabot bumping the pins.

• Three package roots, not an npm workspace — measured 2026-08-26 (npm 11.17, Node 26), not decided on principle. Making /, /Client and /tools/mcp-introspect npm workspaces buys one 298 KB lockfile instead of three (17 KB / 253 KB / 42 KB) and dedupes 614 resolved packages to 582 — 32 packages, 5.2%. Client install time is unchanged: 5642 ms against 5667 ms. The things you would expect to break do not: npm ci inside Client/ still exits 0, npm run <script> still resolves the hoisted binaries (npm prepends every ancestor node_modules/.bin to PATH), and engine-strict still fails the install on a wrong Node major. The costs that are real:

  • Ten CI steps key on cache-dependency-path: Client/package-lock.json — six in ci.yml, four in the tag-only, CI-ungated release.yml. That file stops existing, and four of the ten have no gate that would catch it.
  • Repository Hygiene installs root-only on purpose (prettier is all it needs). Under workspaces that grows 970 ms → 6172 ms and 39 → 318 packages, unless every call site gains --workspaces=false — the mitigation works (1112 ms, 38 packages) but has to be remembered forever.
  • One lockfile puts all three npm Dependabot groups back into the same file. They rewrite three disjoint files today; undoing that reinstates the merge-then-rebase-then-re-run-CI storm the grouping comment at the top of .github/dependabot.yml exists to prevent.

  Thirty-two deduped packages does not pay for that. The roots stay separate, npm run bootstrap installs all three, and Dependabot covers all three.