fix(devops): Change dev PostgreSQL port to 5435 to avoid local conflict
**PROBLEM**: Local PostgreSQL system service running on port 5433,
preventing dev docker-compose stack from starting.
**FIX**: Changed coves-dev-postgres port mapping from 5433→5432 to 5435→5432
**ENVIRONMENT PORTS**:
- Local PostgreSQL system: 5432, 5433
- Test PostgreSQL (docker): 5434
- Dev PostgreSQL (docker): 5435 (NEW)
- PDS (docker): 3001
**ALSO ADDED**:
- PDS_INVITE_REQUIRED: "false" (disable invite codes for testing)
- Updated PDS_SERVICE_HANDLE_DOMAINS to include .communities.coves.social
(allows community handles like community-name.communities.coves.social)
**IMPACT**:
- Dev stack can now start without port conflicts
- E2E tests can create community PDS accounts
- No changes required to test database setup
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>