Bundle CodeCannon command skill updates and bump CodeCannon submodule

[sebastientaggart]

The CodeCannon skill files under .claude/commands/ and .cursor/rules/ are out of sync with the latest CodeCannon templates. The regenerated output includes several improvements: skill descriptions now carry a "Code Cannon:" prefix so they are discoverable as a family, /submit-for-review gains a Step 9 that offers to create follow-up GitHub issues for non-blocking review findings after a successful merge, and the review agent prompt now requires every finding to be phrased as a standalone sentence so it can be promoted into a ticket title without editing.

This issue bundles all of those regenerated files together with the corresponding CodeCannon submodule bump so the command surface stays in lock-step with the upstream templates. It also cleans up leftover stash-conflict markers in three of the command files that were never resolved from an earlier stash apply.

[sebastientaggart]

Agent Implementation Notes

Scope: regenerated CodeCannon skill files + submodule bump, already present in the working tree.

Files:

• Clean (already staged): .claude/commands/{qa,review,setup,status}.md, .claude/review-agent-prompt.md, .cursor/rules/{qa,review,setup,status}.mdc
• Conflict markers to strip (take "Stashed changes" side — it matches the regenerated content): .claude/commands/{deploy,start,submit-for-review}.md, .cursor/rules/{deploy,start,submit-for-review}.mdc
• Submodule bump: CodeCannon 1a85f2e → e11951e

Approach:

1. Check out feature branch from up-to-date main.
2. For each of the 6 UU files, remove the <<<<<<< Updated upstream / ======= / >>>>>>> Stashed changes markers, keeping the Stashed side (newer hash comment).
3. git add the resolved files and the submodule.
4. Hand off to /submit-for-review.

Not in scope: the pre-existing stash@{0} ("WIP on feature/plugin-capabilities") is an obsolete snapshot of the same work from before the submodule bump. It will be left in place until the user confirms it can be dropped.