Replace the local `commit-msg` base and OpenCode shim with
canonical ignored links while preserving Piker's tracked style guide.
Also,
- expose the full skill catalog to Claude and OpenCode
- add canonical slash commands, including `run-tests`
- keep hybrid runtime state local
(this patch was generated in some part by `opencode` using
`gpt-5.6-sol` (`openai`))
We may eventually want to actually track these in git itself so we can
check/sync state with the corresponding git hosting service however? I'm
not sure how feasible it'll be but def worth thinking about Bp
- any `claude` commit-msg gen tmp files used for my `claude.commit`
thingie.
- any `nix develop --profile .nixdev` profile cache file.
- an `Session.vim` state-file used by `:Obsession .`.