learning-hub: update docs for v1.0.67–v1.0.69 CLI releases (#2229)

- Add /mcp list command (shows attached servers mid-turn) to understanding-mcp-servers
- Add stayInAutopilot setting to CLI settings table in copilot-configuration-basics
- Add auto allow-all mode (LLM judge-based approval) to copilot-configuration-basics
- Add kimi-k2.7-code model to the model selection table in building-custom-agents
- Update lastUpdated dates on all three modified pages

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

website/src/content/docs/learning-hub/building-custom-agents.md

@@ -3,7 +3,7 @@ title: 'Building Custom Agents'
 description: 'Learn how to create specialized GitHub Copilot agents with custom personas, tool integrations, and domain expertise.'
 authors:
   - GitHub Copilot Learning Hub Team
-lastUpdated: 2026-07-01
+lastUpdated: 2026-07-06
 estimatedReadingTime: '10 minutes'
 tags:
   - agents
@@ -257,6 +257,7 @@ The agent can then query your database, analyze query plans, and suggest optimiz
 | Most demanding reasoning, security review | Claude Sonnet 5 *(v1.0.67+)* |
 | Complex reasoning, analysis | Claude Sonnet 4 |
 | Code generation, refactoring | GPT-4.1 |
+| Code-specialized tasks, large context | kimi-k2.7-code *(v1.0.68+)* |
 | Quick analysis, simple tasks | Claude Haiku or GPT-4.1-mini |
 | Large codebase understanding | Models with larger context windows |