Add OpenAI plugin submission bundle (#363)

* Add OpenAI plugin submission bundle

Build a Codex-native OpenAI plugin with bundled hooks, public listing metadata, submission guidance, privacy coverage, and regression tests.

AI assistance: OpenAI Codex prepared and validated these changes under maintainer direction.

* Fix provider script command rendering

Replace heuristic rewrites across executable scripts with one explicit provider marker, render pinned shortcuts per target harness, and remove the personal email from the public publisher manifest.

Addresses automated review feedback on PR #363.

AI assistance: OpenAI Codex prepared and validated these changes under maintainer direction.

scripts/lib/validate-plugin-versions.js

@@ -15,6 +15,8 @@
  *     subtree fails loudly instead of merging a drift window onto main.
  *   - `plugin/skills/impeccable/SKILL.md` frontmatter version — generated;
  *     same rationale.
+ *   - `dist/openai/impeccable/.codex-plugin/plugin.json` version — generated
+ *     for public OpenAI submission and checked when that build output exists.
  *
  * The collector is pure (filesystem-in, data-out) so it can be unit-tested
  * against fixtures; build.js owns the logging and the non-zero exit.
@@ -96,6 +98,10 @@ export function collectPluginVersions(rootDir) {
       relPath: 'plugin/.claude-plugin/plugin.json',
       read: (raw) => JSON.parse(raw).version,
     },
+    {
+      relPath: 'dist/openai/impeccable/.codex-plugin/plugin.json',
+      read: (raw) => JSON.parse(raw).version,
+    },
     {
       relPath: 'plugin/skills/impeccable/SKILL.md',
       read: (raw) => readSkillFrontmatterVersion(raw),