Add contributing workflow and expand gitignore

.gitignore

@@ -1,17 +1,38 @@
+# Dependencies
 node_modules/
 .pnpm-store/
-.next/
+
+# Build output
 dist/
 build/
+.next/
+out/
+*.tsbuildinfo
+
+# Test output
 coverage/
+.nyc_output/
+
+# Runtime and temp files
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+.tmp/
+tmp/
+temp/
+
+# Environment files
 .env
 .env.local
 .env.*.local
-*.log
+
+# IDE and OS files
 .DS_Store
 .vscode/
 .idea/
-.tmp/
-tmp/
+
+# Local databases
 packages/db/prisma/dev.db
 packages/db/prisma/dev.db-journal

CONTRIBUTING.md

@@ -0,0 +1,33 @@
+# Contributing
+
+## Branching Rule
+- Direct pushes to `master` are forbidden.
+- Every task must be implemented in a separate branch.
+- Finished work must be delivered through a merge request into `master`.
+
+## Standard Flow
+1. Update local `master`.
+2. Create a task branch from `master`.
+3. Implement the change in that branch.
+4. Run the relevant verification for the change.
+5. Commit the work in that branch.
+6. Push the branch to Gitea.
+7. Open a merge request into `master`.
+8. Merge only after review or explicit approval.
+
+## Branch Naming
+Use short, purpose-driven names, for example:
+- `feature/auth-password-reset`
+- `fix/session-revoke`
+- `docs/deployment-notes`
+- `chore/gitignore`
+
+## Minimum Expectations
+- Keep changes scoped to one task per branch.
+- Do not mix unrelated refactors into the same merge request.
+- Update docs when behavior, deployment, or operational flow changes.
+- If schema changes are introduced, include the Prisma migration in the same branch.
+
+## Agent Workflow
+- Codex or any other coding agent must create and use a dedicated branch per task.
+- After task completion, the agent should push that branch and prepare it for a merge request instead of pushing directly to `master`.

README.md

@@ -28,3 +28,4 @@ The repository is intentionally light on runtime code. Its current purpose is to
 - `docs/plan/mvp-system-plan.md`
 - `docs/architecture/system-overview.md`
 - `docs/ops/deployment.md`
+- `CONTRIBUTING.md`