Add @probo/skills multi-agent compliance package

Ship compliance skills and agent plugin wiring for Claude Code,
Codex, OpenCode, and Cursor via Probo MCP (OAuth 2.0). Includes
access-review and missing-signatures workflows, repo-root Git
marketplaces, validation, and npm release CI.

Signed-off-by: Cursor Agent <cursoragent@cursor.com>

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>

contrib/claude/release/README.md

@@ -1,6 +1,6 @@
 # Release
 
-The repository ships eight independently-versioned tracks. Each has its own
+The repository ships nine independently-versioned tracks. Each has its own
 version source, its own `CHANGELOG.md`, its own tag pattern, and its own
 release workflow. Cutting a release means: bump the version, write a
 changelog entry, commit, tag, push.
@@ -14,6 +14,7 @@ changelog entry, commit, tag, push.
 | `probo-agent`           | `probo-agent/v*`               | [probo-agent.md](./probo-agent.md) |
 | `@probo/n8n-nodes-probo` | `@probo/n8n-nodes-probo/v*`   | [n8n-nodes-probo.md](./n8n-nodes-probo.md) |
 | `@probo/cookie-banner`  | `@probo/cookie-banner/v*`      | [cookie-banner.md](./cookie-banner.md) |
+| `@probo/skills`         | `@probo/skills/v*`             | [skills.md](./skills.md)           |
 | Helm chart (`probo`)    | `helm/v*`                      | [helm.md](./helm.md)                   |
 
 When the user asks for a release **without specifying a track**, follow
@@ -76,6 +77,10 @@ git log $(git describe --tags --abbrev=0 --match='@probo/n8n-nodes-probo/v*')..H
 git log $(git describe --tags --abbrev=0 --match='@probo/cookie-banner/v*')..HEAD --oneline \
   -- packages/cookie-banner
 
+# @probo/skills
+git log $(git describe --tags --abbrev=0 --match='@probo/skills/v*')..HEAD --oneline \
+  -- packages/skills
+
 # helm chart
 git log $(git describe --tags --abbrev=0 --match='helm/v*')..HEAD --oneline \
   -- contrib/helm