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

.pre-commit-hooks.yaml

@@ -0,0 +1,20 @@
+-   id: kyberforge-vale-audit-skill
+    name: Kyberforge Vale prose audit (SKILL.md)
+    description: Deterministic prose-pattern prefilter for kyberforge's skill-audit, via its own bundled Vale config/styles
+    entry: plugins/kyberforge/skills/skill-audit/scripts/vale-wrap.sh --config plugins/kyberforge/skills/skill-audit/assets/vale/.vale.ini
+    language: script
+    files: '(^|/)SKILL\.md$'
+
+-   id: kyberforge-vale-audit-agent
+    name: Kyberforge Vale prose audit (agent files)
+    description: Deterministic prose-pattern prefilter for kyberforge's agent-audit, via its own bundled Vale config/styles
+    entry: plugins/kyberforge/skills/agent-audit/scripts/vale-wrap.sh --config plugins/kyberforge/skills/agent-audit/assets/vale/.vale.ini
+    language: script
+    files: '(^|/)agents/[^/]+\.md$|\.agent\.md$'
+
+-   id: kyberforge-skill-size-check
+    name: SKILL.md size ceiling
+    description: Enforce agentskills.io's 500-line/5,000-token SKILL.md size ceiling
+    entry: scripts/skill-size-check.sh
+    language: script
+    files: '(^|/)SKILL\.md$'