mathias
025f01aa80
~/.agents/skills was a single link straight at this checkout. That encoded an assumption nobody had stated — that this checkout is the only source of skills on the host. On flamingo it was not: Crush's directory held Anthropic's official set, and the only way to install this library was to move that set aside. A capability loss dressed up as a tidy-up. The canonical location becomes a real directory of per-skill symlinks, fed by the checkout plus anything in SKILLS_EXTRA_SOURCES. Harnesses keep their one directory link, so the count is N + one per harness rather than N x harnesses, which is what #23 was actually about. The three requirements #27 named, each with a test: - collisions are logged with both paths and the checkout wins, never resolved in silence; - removing a skill from a source prunes its link; - anything in the managed directory that is not our symlink is reported and left in place — the installer does not delete content it did not create. doctor learns the same model: sources are recorded at ~/.agents/skills-sources, a link into a configured source is healthy, a link into an unknown one is not, and the old count check becomes a per-skill check because a per-skill layout can lose one skill without changing any total. The pre-#27 wiring is named as legacy rather than reported as damage. count_skills needed find -L; without it symlinked skill directories count as zero. Verified live on koala: migrated in place to 42 per-skill links, then a second source added a 43rd alongside them, then a re-run without that source pruned it back to 42. Only doctor finding throughout was the genuine stale plugin. Closes #27 Bump-Type: minor
143 lines
5.6 KiB
Markdown
143 lines
5.6 KiB
Markdown
# skills
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Engineering skills library — markdown `SKILL.md` files that plug into any
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AI-coding harness.
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For **Claude Code** this repo is a plugin, installed from the marketplace it
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also hosts; that path carries the hooks and MCP servers too. For **Crush, Pi
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and OpenCode** it is a plain library wired by `install.sh` as one directory
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symlink per harness. See [`SKILLS_INDEX.md`](./SKILLS_INDEX.md#wiring-into-tools).
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## What is a skill?
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A skill is a single directory containing one or more markdown files. The
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canonical entrypoint is `<name>/SKILL.md`. Additional reference material
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lives alongside in the same directory (e.g.
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`clean-code/references/code-smells.md`). Harnesses load skills on
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demand — keep `SKILL.md` short and triggerable; push depth into
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references.
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See [`SKILLS_INDEX.md`](./SKILLS_INDEX.md) for the full catalogue with
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descriptions and "use when" triggers.
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## Install
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### Claude Code — the plugin
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```
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/plugin marketplace add https://git.d-ma.be/mathias/skills.git
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/plugin install skills@mathias
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```
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The plugin ships skills, the `secret-guard` + `pre-task-ritual` hooks, and the
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brain/gitea/infra MCP servers as one versioned unit. Skills are namespaced
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(`skills:tdd`). Updates land when `.claude-plugin/plugin.json`'s `version`
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moves — CI bumps it on every release.
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### Crush, Pi, OpenCode — `install.sh`
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```bash
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curl -fsSL https://git.d-ma.be/mathias/skills/raw/branch/main/install.sh | bash
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```
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Idempotent. It clones or fast-forwards the checkout, then populates one
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**managed directory** and gives each harness a single link to it:
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| Path | Target |
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| `~/.agents/skills/` | a real directory, one symlink per skill (Pi reads this path directly) |
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| `~/.agents/skills/<skill>` | `$SKILLS_CHECKOUT_DIR/skills/<skill>`, or another configured source |
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| `~/.config/crush/skills` | `~/.agents/skills` |
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| `~/.config/opencode/skills` | `~/.agents/skills` |
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Total links are N + one per harness — not N x harnesses, which is what #23 was
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actually about.
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### More than one source of skills
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`~/.agents/skills` used to be a single link straight at this checkout. That
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encoded an assumption nobody had stated — that this checkout is the only source
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of skills on the host — and on flamingo the only way to install this library
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was to displace Anthropic's official set, which lived in Crush's directory.
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Real capability loss dressed up as a tidy-up (#27).
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Point `SKILLS_EXTRA_SOURCES` at any number of extra directories, colon
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separated, each holding `<skill>/SKILL.md`:
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```
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SKILLS_EXTRA_SOURCES=~/.config/crush/skills.anthropic bash install.sh
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```
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- The checkout is always first and always wins a name collision — but the
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collision is **logged**, never resolved in silence. Quietly picking one is
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how stale content wins.
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- Removing a skill from a source removes its link on the next run.
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- Anything in the managed directory that is not a symlink is reported and left
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alone. install.sh does not delete content it did not create.
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- The source list is recorded at `~/.agents/skills-sources` so `bin/doctor`
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can tell a link into a known source from a link into a forgotten one.
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### Where the checkout must live
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`SKILLS_CHECKOUT_DIR` defaults to `~/.local/share/skills`, and that default is
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load-bearing: it is **host-local, outside any synced or shared directory**.
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On this fleet `~/dev` is an iCloud folder shared by flamingo and iguana, and it
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spans two path roots — `/Users/mathias` on the Macs, `/home/mathias` on koala.
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A checkout there is a git working tree with two concurrent writers, and any
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absolute symlink stored there is broken on one side by construction. That is
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what produced 243 dangling links across 12 repos (#23). Do not "fix" the
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default to point into `~/dev`.
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### Per-host env-var overrides
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| Env var | Default |
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|---|---|
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| `SKILLS_REPO_URL` | `https://git.d-ma.be/mathias/skills.git` |
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| `SKILLS_REF` | `main` (set to e.g. `v0.4.0` to pin a release) |
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| `SKILLS_CHECKOUT_DIR` | `$HOME/.local/share/skills` |
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| `SKILLS_SKIP_FETCH` | unset (`1` wires an existing checkout without touching HEAD) |
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| `AGENTS_SKILLS_DIR` | `$HOME/.agents/skills` |
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| `CRUSH_SKILLS_DIR` | `$HOME/.config/crush/skills` |
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| `OPENCODE_SKILLS_DIR` | `$HOME/.config/opencode/skills` |
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| `SKILLS_EXTRA_SOURCES` | unset (colon-separated extra source directories) |
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Antigravity and Mistral Vibe targets were removed — unused.
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## Checking a host
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```bash
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task doctor # or bin/doctor
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```
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Reports dangling links, links resolving into a foreign checkout, skill-count
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mismatches, stray entries, and leftover per-skill Claude symlinks. Non-zero
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exit on drift. It also runs at session start via the plugin, so a drifting
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host says so rather than waiting to be discovered.
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## Versioning
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Every commit to `main` is auto-tagged as a semver release by the
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`.gitea/workflows/release.yml` action. Bump direction follows the commit
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footer:
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- `Bump-Type: major` → `X.0.0`
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- `Bump-Type: minor` → `0.Y.0`
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- *anything else* → `0.0.Z` (patch, the default)
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Consumer projects can pin a version by setting `SKILLS_REF=v0.1.0`
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before `task skills:install`; default is `main` for always-current.
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## Contributing a skill
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1. Add a directory `<short-kebab-name>/`.
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2. Create `<short-kebab-name>/SKILL.md` — start with one-paragraph
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purpose, then triggers ("use when …"), then mechanics.
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3. Add a row to `SKILLS_INDEX.md` (description + use-when).
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4. Commit directly to `main`. Conventional-commit prefix
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(`feat:` / `fix:` / `docs:`). Add `Bump-Type: minor` footer when
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adding a new skill or expanding scope; default patch covers edits.
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This repo is markdown-only and public — never include secrets, client
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names, or anything under NDA in a skill.
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