fix(lint): make Vale prefilter portable via the plugin

skill-audit/agent-audit's Step 1 resolved vale-wrap.sh/.vale.ini via
`git rev-parse --show-toplevel`, which returns whichever repo the skill
happens to run in. Inside ai-development that works; in any external repo
that installs kyberforge@holocron as a plugin, it resolves to that repo's
own root, which has no .vale.ini — the prefilter silently fell back to
full LLM judgment. ADR-0013 named this as a deliberately deferred gap.

Vale's config/styles/wrapper now ship inside the plugin itself: a
canonical copy in agent-audit/assets/vale/ (Kyberforge + KyberforgeCopilot,
the superset agent-audit needs) and a smaller duplicate in
skill-audit/assets/vale/ (Kyberforge only) — per the no-cross-skill-path
rule already established for plugin cache-installs. Both skills resolve
these relative to their own directory, same as scripts/validate.sh
already does.

A new root .pre-commit-hooks.yaml exposes both copies plus
skill-size-check so any external repo can enforce the same rules via
`repo: <this-repo-url>, rev: <tag>` in its own pre-commit config,
independent of Claude Code entirely — the same mechanism covers CI. This
repo's own pre-commit hook now consumes the identical plugin-bundled
copies via repo: local (not a third root copy, and not a pinned
self-reference, which would lint working-tree edits against the last
tagged release instead of the change being made). Split into
vale-audit-prefilter-skill/-agent hooks after confirming, by diffing the
full corpus against both old and new config before deleting the old
files, that one combined hook pointed at only one copy silently 0-file-
skips the other file type.

scripts/check-vale-style-sync.sh guards the two copies against drift,
wired at pre-push alongside check-manifests.

ADR: 0014

AGENTS.md

@@ -22,7 +22,7 @@ Fall back to raw shell only when no skill covers it.
 ## Setup and testing
 
 - Install git hooks via `git:pc-run`, wiring all three stages — this repo's `.pre-commit-config.yaml` has no `default_install_hook_types`, so a plain install silently skips `commit-msg` (Conventional Commits) and `pre-push` (tests, manifest check).
-- Install the `vale` binary — required by the `vale-audit-prefilter` pre-commit hook, which runs on every commit touching a `SKILL.md` or agent `.md` file. Without it the hook fails with a bare "command not found" and no install pointer. `brew install vale` (macOS), `snap install vale` (Linux), `choco install vale` (Windows), or see https://vale.sh/docs/vale-cli/installation/. No `vale sync` needed — the `Kyberforge` styles are committed under `styles/`, not downloaded packages.
+- Install the `vale` binary — required by the `vale-audit-prefilter-skill`/`-agent` pre-commit hooks, which run on every commit touching a `SKILL.md` or agent `.md` file. Without it the hooks fail with a bare "command not found" and no install pointer. `brew install vale` (macOS), `snap install vale` (Linux), `choco install vale` (Windows), or see https://vale.sh/docs/vale-cli/installation/. No `vale sync` needed — the `Kyberforge` styles are committed under `plugins/kyberforge/skills/{skill-audit,agent-audit}/assets/vale/styles/`, not downloaded packages (see ADR-0014).
 - Run `bash tests/run-tests.sh` before considering any change done — it runs every `test-*.sh` script in the repo plus the bats suite (`--bats-only` for just bats). First run auto-initializes the bats submodules; no manual `git submodule update` needed.
 - Pushing re-runs the full suite plus `scripts/check-manifests.sh` via the pre-push hook — same commands, so run them locally first.
 - Author commits with `git:git-commits` — it validates Conventional Commits (enforced at `commit-msg`) for you.