feat: upgrade to qwen3.5, self-hosted Gitea CI, optimize Docker image

Model upgrade:
- qwen2.5:14b → qwen3.5:latest across config, tools, and docs
- Added qwen3.5 to multimodal model registry

Self-hosted Gitea CI:
- .gitea/workflows/tests.yml: lint + test jobs via act_runner
- Unified Dockerfile: pre-baked deps from poetry.lock for fast CI
- sitepackages=true in tox for ~2s dep resolution (was ~40s)
- OLLAMA_URL set to dead port in CI to prevent real LLM calls

Test isolation fixes:
- Smoke test fixture mocks create_timmy (was hitting real Ollama)
- WebSocket sends initial_state before joining broadcast pool (race fix)
- Tests use settings.ollama_model/url instead of hardcoded values
- skip_ci marker for Ollama-dependent tests, excluded in CI tox envs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pyproject.toml

@@ -9,8 +9,8 @@ description = "Mission Control for sovereign AI agents"
 readme = "README.md"
 license = "MIT"
 authors = ["Alexander Whitestone"]
-homepage = "https://alexanderwhitestone.github.io/Timmy-time-dashboard/"
-repository = "https://github.com/AlexanderWhitestone/Timmy-time-dashboard"
+homepage = "http://localhost:3000/rockachopa/Timmy-time-dashboard"
+repository = "http://localhost:3000/rockachopa/Timmy-time-dashboard"
 packages = [
     { include = "config.py", from = "src" },
     { include = "brain", from = "src" },