🧠 Add brain-dump docs for skill adaptation

Add exploratory and design docs for porting dirigent skills to
reliquary, including:
- Explore port options for the gitea skill (in-plugin vs vendored)
- Document activation mechanics across Claude Code and cross-tools
- Include an orchestration comparison between dirigent and reliquary
  approaches
- Add research on glob negation and flag-file activation patterns
- Create uv-detection goals and skill-engines cross-tool reports
- Provide a research plan for future porting work and risk notes

docs/workpad/goals/uv_detection.md

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+
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+- detect tainted .venv folders: custom files and folders inside .venv, using .venv as multi-python base dir, etc. should lead to a warning, as it shows that `uv` is not fully embraced in that project.
+- detect default packages for skills in main uv: 
+  - requests or httpx
+  - python-dotenv
+  - pydantic v2+
+  - pytest
+  - pyyaml
+  - tomllib or tomli
+  - mcp
+- support `SCRIPTS_DIR` (default: `'scripts/'`), `SCRIPTS_STORE` (default: `'/tmp/'`) and `SCRIPTS_UV` (default: `''`) env vars?
+- detect if project itself is a python project, or uv is there to be used by the agent.
+- detect uv pins (uv.toml, pyproject.toml, pip requirements)
+- detect justfiles, makefiles, misefiles
+-