feat: per-project LLM models, ACP session pool, smart pagination tests

- ACP session pool with per-model subprocesses and 8h idle eviction
- Per-project LLM config: local override → mcpd recommendation → global default
- Model override support in ResponsePaginator
- /llm/models endpoint + available models in mcpctl status
- Remove --llm-provider/--llm-model from create project (use edit/apply)
- 8 new smart pagination integration tests (e2e flow)
- 260 mcplocal tests, 330 CLI tests passing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/cli/tests/commands/project.test.ts

@@ -30,8 +30,6 @@ describe('project with new fields', () => {
         'project', 'smart-home',
         '-d', 'Smart home project',
         '--proxy-mode', 'filtered',
-        '--llm-provider', 'gemini-cli',
-        '--llm-model', 'gemini-2.0-flash',
         '--server', 'my-grafana',
         '--server', 'my-ha',
       ], { from: 'user' });
@@ -40,8 +38,6 @@ describe('project with new fields', () => {
         name: 'smart-home',
         description: 'Smart home project',
         proxyMode: 'filtered',
-        llmProvider: 'gemini-cli',
-        llmModel: 'gemini-2.0-flash',
         servers: ['my-grafana', 'my-ha'],
       }));
     });