feat(github-copilot-sdk): bump version to v0.11.0 for performance & stability

- Fixed shared client pool bug to eliminate TTFT latency.
- Added pure BYOK-only mode support.
- Improved cross-user environment isolation for concurrency.
- Resolved RichUI infinite vertical sizing loop.
- Integrated client.ping() into stall detection.
- Automatically hide TODO List widget after completion.
- Synced all documentation and release notes.

.agent/learnings/README.md

@@ -44,3 +44,6 @@ Edge cases or caveats to watch out for.
 | [openwebui-tool-injection.md](./openwebui-tool-injection.md) | How OpenWebUI injects parameters into Tool functions, and what the Pipe must provide |
 | [openwebui-mock-request.md](./openwebui-mock-request.md) | How to build a valid Mock Request for calling OpenWebUI-internal APIs from a Pipe |
 | [copilot-plan-mode-prompt-parity.md](./copilot-plan-mode-prompt-parity.md) | Why Plan Mode prompt logic must be shared between fresh-session and resume-session injection |
+| [richui-default-actions-optout.md](./richui-default-actions-optout.md) | How static RichUI widgets opt out of fallback prompt/link action injection |
+| [richui-declarative-priority.md](./richui-declarative-priority.md) | How RichUI resolves priority between declarative actions and inline click handlers |
+| [richui-interaction-api.md](./richui-interaction-api.md) | Recommended 4-action RichUI interaction contract for chat continuation, prefill, submit, and links |