feat(F.17): add Coolify projects, databases, services — 67 tools total

Add 3 new Coolify plugin handlers (37 new tools, 67 total):
- projects.py: 8 tools (CRUD projects + environments)
- databases.py: 16 tools (CRUD, lifecycle, 6 DB types, backups)
- services.py: 13 tools (CRUD, lifecycle, env vars)

734 tests passing. Total platform tools: 633.

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

tests/test_coolify.py

@@ -75,7 +75,7 @@ class TestCoolifyPlugin:
     def test_tool_specifications(self):
         """Test that tool specifications are returned."""
         specs = CoolifyPlugin.get_tool_specifications()
-        assert len(specs) == 30  # 17 apps + 5 deployments + 8 servers
+        assert len(specs) == 67  # 17 apps + 16 dbs + 5 deploys + 8 projects + 8 servers + 13 svcs
 
         # Check all specs have required fields
         for spec in specs: