refactor(skills): retrofit the corpus to the ADR-0020 context contract (#129)

Retrofits all 39 skills to ADR-0020's description/body context contract, then fixes what six rounds of independent review found in that retrofit — including four ways the hot gate itself failed open.

Closes #99, #107, #108, #110, #111, #114, #115, #120.

## The retrofit (waves 1-5)

| | Start | Now |
|---|---|---|
| Description FAILs (>400 chars) | 26 | **0** |
| Body FAILs (>900 words, body-only) | 9 | **0** |
| Dangling routing targets | 2 | **0** |
| `Kyberforge.CompositionNote` | 10 | **0** |
| Preload tax | 21,005 chars | **~10,500** |

Under the 12,000-char success criterion. Per-wave detail is on #99.

## The review fixes

**The gate failed open four ways, three of them found after the retrofit shipped.** An unrecognised follower token made a dangling target vanish. A skill directory with no `SKILL.md` resolved as a valid target, so a commit could be green locally and red in a fresh clone — three existing fixtures were relying on that, one of which made the install-leak A/B pass vacuously. Then the free-standing `/name` sweep turned out to be gated on the sentence carrying a boundary marker, so route notation in any other sentence was invisible — not an ERROR, not a SUGGESTION, not an INFO — which left the documented "`/name` always blocks" promise false from a second direction. All four fixed and pinned.

**Two checks were silently not running.** `validate-provenance.sh` checks 7-8 were dead across nine skills. Waking them exposed a deeper problem: they assume `Research doc:` names a source index, but 30 of 121 entries point at topic content documents, so every new check-7 INFO was a false positive and check 8 was saved from a false-FAIL flood only by an *unannounced* skip. Checks 7/8 are now scoped to source indexes and every skip announces itself (#121).

**The retrofit's own anti-goal, four times.** ADR-0020 warns that a blunt gate gets satisfied by deleting content rather than relocating it. `diagnose` and `skill-audit` relocated prose and then read it unconditionally; `prototype` and `vale-config` deleted rules outright that survived nowhere. All four addressed.

## Verification

- `bash tests/run-tests.sh --strict` — 24 suites, 0 skipped, 0 failed
- `bash tests/run-bats.sh` — 325 tests, 0 failures
- `pre-commit run --all-files` — 17/17
- `pre-commit run --hook-stage pre-push --all-files` — 16/16, with `apm marketplace check` and `apm pack --check-clean` run against the remote, not skipped
- `scripts/skill-size-check.sh` over all 39 skills — rc 0, 0 ERROR/FAIL, SUGGESTION-only
- Preload tax measured at **10,498 chars**, max description 390 — both inside budget
- Every new test proven non-vacuous by a deliberate mutation of the behaviour it covers

**Per-commit sync, stated accurately:** the ten commits from the latest review round each pass `check-plugin-content-sync` in isolation, verified by checking each out in a detached worktree with a clean between. The earlier gitea window (`dfacf05..bedbd1d`, nine commits) does **not** — its mirror was regenerated in one batch at `bbc7300`. An earlier revision of this description claimed the property held for every commit; it does not, and a bisect through that window lands on a red commit. **Squash-merge** to collapse it, or accept that this range is not bisectable.

## Version bump

Six plugins and the catalog take a **patch**, not a minor. The branch is **89 commits — 40 `fix` / 30 `refactor` / 12 `docs` / 5 `chore` / 2 `test` — zero `feat`, zero `!`, zero `BREAKING CHANGE`** — and adds no skill, agent, command or hook. (Two earlier revisions of this section cited a stale histogram, most recently 78 commits; the figures above are measured at HEAD.) Both rules this repo ships (`forge/references/version-bump.md`, landing in this PR, and `git-commits/references/conventional-commits-spec.md`) make that a patch, and the catalog set is unchanged at 7 entries.

Not settled by that: four published files were removed from the installed tree, three moved, and `caveman` gained `disable-model-invocation`, retiring its old triggers. Under a strict reading those are major-class and currently ship under `refactor:` with no marker. Whether the deployed skill surface is a public contract is written down nowhere — worth deciding, but it outlives this PR.

## Deliberately not in scope

#112 (cherry-pick ownership, now resolved in favour of `git-commits`), #113 (`rtk git` normalisation), #116 (research fan-out), #101 (audit-skill merge), #122 (non-spec skill-root files), #123 (no PRD producer) stay open. #117 is the one worth reading: the contract's remedy is to move prose into `references/`, which is exactly where neither the size gate nor Vale looks — and the blind spot is wider than #117 currently records, since there is no root `.vale.ini` at all, so every ADR, `CONTEXT.md` and `README.md` is unlinted too.

That blind spot let this branch carry two `level: error` `Kyberforge.SentenceOpenerThereIs` violations into `references/` files it created — `provider-adapter-author/references/provider-matrix.md:31` and `agent-audit/references/finding-criteria.md:95`. Both are reworded in `afadaae`, confirmed by routing each file through the audit's own `vale-wrap.sh` (1 error each before, 0 after). Five further occurrences sit in `references/` files already on `main`; those are the pre-existing corpus and stay with #117, which is the real fix.

Also unfixed and not this PR's: `apm install` appends a duplicate `SessionStart` entry to `.claude/settings.json`, so a fresh clone cannot get pre-push green without an edit AGENTS.md warns against. Reproduces identically on `main`.

Co-authored-by: Defame1297 <gitea@rkdr.net>
Reviewed-on: https://git.dev.rkdr.net/Defame1297/holocron/pulls/129
Co-authored-by: Claude Code AI - Gitea MCP <claude@noreply.git.dev.rkdr.net>
Co-committed-by: Claude Code AI - Gitea MCP <claude@noreply.git.dev.rkdr.net>

plugins/kyberforge/skills/apm-workflow/references/configure.md

@@ -25,9 +25,9 @@ version: 1.0.0
 
 - `name`, `version` — required (see above)
 - `description`, `author`, `license`, `homepage`, `repository`, `keywords` — standard package metadata
-- `type` — `instructions | skill | hybrid | prompts`; constrains `.apm/` contents
+- `type` — `instructions | skill | hybrid | prompts`; selects how the package is processed at install/compile time. It is a routing selector, not a constraint on what `.apm/` may contain (see Gotchas)
 - `targets` — which harnesses this package compiles to (plural list form preferred; legacy singular `target: copilot,claude` CSV form still accepted)
-- `includes` — `auto` publishes the authoritative local layout as-is, or list explicit repo paths. Note: `auto` does not sweep generic root-level passthrough files (README.md, docs/, sources.md, config files) into the `apm pack` distribution bundle — see `references/compile.md`
+- `includes` — `auto` publishes the authoritative local layout as-is; it is not scoped down to what's relevant, so anything narrower needs an explicit repo-path list. Note: `auto` also does not sweep generic root-level passthrough files (README.md, docs/, sources.md, config files) into the `apm pack` distribution bundle — see `references/compile.md`
 - `dependencies`/`devDependencies` — `apm`/`mcp`/`lsp` entries; `devDependencies` share the same shape but are excluded from the shipped artifact
 - `scripts` — named commands runnable via `apm run <name>`
 - `compilation` — target/strategy/exclude/placement controls for `apm compile`/`apm pack`
@@ -35,8 +35,6 @@ version: 1.0.0
 - `registries` — named registry endpoints for shorthand dependency resolution
 - `marketplace` — owner + packages list; see `references/marketplace.md` for the full marketplace workflow
 
-See `docs/research/docs/microsoft-apm/configuration.md` for the complete annotated schema.
-
 ## Bumping a package's own version (repo policy)
 
 apm ships no version-bump command, so `version:` in a package's own `apm.yml` is a hand edit.
@@ -68,14 +66,14 @@ from a content diff.
 
 ## MCP server secrets
 
-`${VAR}` indirection is required for MCP server secrets in `apm.yml` — see SKILL.md Gotchas.
+`${VAR}` indirection is required for MCP server secrets (headers, env vars) in `apm.yml`, never literal values — see SKILL.md Gotchas.
 
 ## Registries (config-level, not `apm.yml`)
 
 Any git repo is a valid package source by default — no registry required. To declare named registries for shorthand dependency resolution:
 
 ```bash
-apm experimental enable registries   # required first — see SKILL.md Gotchas
+apm experimental enable registries   # required first — see Gotchas
 apm config set registry.corp-main.url https://artifactory.corp.example.com/apm
 apm config set registry.corp-main.token eyJ...
 apm config set registry.corp-main.default true
@@ -85,4 +83,6 @@ apm config set registry.corp-main.default true
 
 ## Gotchas
 
+- `apm.yml`'s `type:` field validates nothing about `.apm/`. It selects processing: `instructions` compiles to AGENTS.md only, `skill` installs a native skill only, `prompts` emits commands only, `hybrid` does both (see `apm_cli/models/validation.py`, `PackageContentType`). apm checks only that the value parses to one of those four strings; no check anywhere compares it against the primitives actually on disk, and no mismatch diagnostic exists. A package declaring `type: instructions` while shipping `.apm/skills/` therefore raises no error — the mismatch resolves silently, either by omitting that primitive from the install/compile output or, in apm 0.28.0 where `get_effective_type()` routes off the on-disk layout and never reads the declared field, by ignoring the declared value outright. Both directions are silent: `apm install` and `apm compile` can exit 0 having shipped none of the primitives you expected. Set `type:` to cover every primitive the package ships, and confirm the deployed output rather than the exit code.
+- `apm experimental enable registries` must run before any `registry.*` config takes effect. Declaring a `registries:` block or running `apm config set registry.*` without it silently does nothing — no error, no warning.
 - `apm plugin init <name>` run with a positional name argument, from inside a directory already named `<name>`, creates a wrongly-nested `<name>/<name>/` subdirectory — it treats the positional arg as "create a new project directory named X," not "confirm the current directory is X." Fix: omit the positional argument entirely when already cd'd into the target package directory — run `apm plugin init --yes --target claude,copilot` instead.