Upstream skill refresh, present in the working tree before this session —
committed here rather than left dangling. Not authored work.
- uv invocation fix: `uv tool run graphifyy python` -> `uv tool run --from
graphifyy python`. Without --from, uv resolved the command name against
the package instead of running the interpreter.
- default output is now HTML viz; --obsidian opts into the vault.
- description reworded to trigger on codebase questions generally, not
only when graphify-out/ already exists.
Bastien Chanot
960d3f33ea