feat: upgrade agent team with browser, MCP, CLI tools, rules, and hooks

- Add Chrome browser access to 6 visual agents (18 tools each)
- Add Playwright access to 2 testing agents (22 tools each)
- Add 4 MCP servers: Postgres Pro, Redis, Lighthouse, Docker (.mcp.json)
- Add 3 new rules: testing.md, security.md, remotion-service.md
- Add Context7 library references to all domain agents
- Add CLI tool instructions per agent (curl, ffprobe, k6, semgrep, etc.)
- Update team protocol with new capabilities column
- Add orchestrator dispatch guidance for new agent capabilities
- Init git repo tracking docs + Claude config only

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.claude/rules/testing.md

@@ -0,0 +1,20 @@
+# Testing Conventions
+
+## Backend Tests
+- Real DB + real Redis. No mocks. conftest.py has shared fixtures.
+- Location: cofee_backend/tests/integration/<module>.py
+- Naming: test_<action>_<scenario> (e.g., test_create_project_without_name)
+- Run: cd cofee_backend && uv run pytest
+- Single test: uv run pytest -k "test_name"
+- API fuzzing: cd cofee_backend && uv run --group tools schemathesis run http://localhost:8000/api/schema/ --checks all
+
+## Frontend E2E Tests
+- Playwright with data-testid selectors on every interactive element
+- Location: cofee_frontend/tests/
+- Run: cd cofee_frontend && bun run test:e2e
+- Every component root element must have data-testid
+
+## General
+- Never mock the database — use real test DB
+- Tests must be deterministic — no Date.now(), no Math.random()
+- Test error paths, not just happy paths