feat(github-orchestration): Improve stop hook issue display with URLs

[sylvansys]

Summary

• Add LinkedIssueInfo interface for rich issue data (number, title, url, repo)
• Add extractLinkedIssuesWithInfo() function for full issue details with cross-repo support
• Update stop hook to display linked issues nested under PR with clickable URLs
• Add "Other Issues Created" section for session issues not linked to the PR
• Support issues from any repo (not just current one) with proper owner/repo#num format

New Output Format

📋 PR: https://github.com/owner/repo/pull/42

   📌 Linked Issues (closes when merged):
      • #123 - Fix auth bug → https://github.com/owner/repo/issues/123
      • owner/other-repo#456 → https://github.com/owner/other-repo/issues/456

📝 Other Issues Created:
   • #789 - Follow-up task → https://github.com/owner/repo/issues/789

Test plan

• TypeScript compiles without errors
• ESLint passes
• All existing tests pass
• Manual test: Create a PR that closes an issue using "Fixes #X" syntax
• Manual test: Create an issue during the session that is NOT linked to the PR
• Manual test: Stop the session and verify linked issues appear nested under PR with URLs
• Manual test: Verify other issues appear in separate section with repo context

🤖 Generated with Claude Code

[github-actions]

PR feedback updates from your reviewer agents. Based on linked issues, context files, and committed changes.

Code Quality: ✅ 4 • ❌ 0 • ⏭️ 0

Check	Status	Reasoning
DRY Compliance	✅	No significant code duplication found. The ci-status.ts utility module successfully consolidates shared CI checking logic used across multiple hooks. Functions like execCommand, checkPRExists, and awaitCIWithFailFast are properly abstracted and reused.
YAGNI Compliance	✅	Code implements only necessary features without over-engineering. The workflow configuration supports three specific agents (requirements, code-quality, context) that are actively used. CI status checking functions provide essential functionality without speculative features. No unused abstractions or premature generalizations detected.
Modularity	✅	Well-organized separation of concerns. The ci-status.ts module cleanly separates CI checking utilities from hook-specific logic. Functions are appropriately scoped and have clear, single responsibilities. GitHub workflow follows standard GitHub Actions patterns with clear job separation.
Maintainability	✅	Code is clear, well-documented, and maintainable. All exported functions have comprehensive JSDoc comments with examples. TypeScript interfaces provide strong typing for all major data structures. Function names are descriptive and self-explanatory. The workflow YAML has helpful comments explaining configuration options.