fix(kyberforge): apply audit findings to agent-author skill

- Fix Copilot format conflation: split CLI vs cloud/IDE in Step 3,
  clean copilot template to CLI-only fields, add body length limit (30k)
- Add missing CC fields to Step 2: disallowedTools, skills, color,
  initialPrompt, background
- Fix Gotchas: add WaitForMcpServers to unavailable tools list,
  add ExitPlanMode plan-mode carve-out
- Make 'Use proactively' conditional (was unconditional directive)
- Clarify audit invocation to 'Invoke kyberforge:agent-audit skill directly'
- Add 'Would the agent get this wrong?' heuristic to Improve Step 4
- Add agent-audit co-install prerequisite check
- Add pre-audit manual checklist to validate/close step
- Add references/scripts.md for new-agent.sh conventions
- Fix sources.md: remove template/script files from Contributing files
  (templates can't carry YAML provenance without leaking into user files),
  add 3 missing research slugs with (none) contributing files
- Add context7-github-en-copilot to deployment-modes.md source_keys
- Update README.md and references/README.md with new scripts.md entry

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0147vXtL5sP6vorDdqXGJJU9

plugins/kyberforge/skills/agent-author/references/deployment-modes.md

@@ -3,6 +3,7 @@ source_keys:
   - context7-websites-code-claude
   - claude-code-plugins-docs
   - claude-code-subagents-docs
+  - context7-github-en-copilot
   - github-custom-agents-configuration
   - github-cli-plugin-reference
 ---