feat(app): migrate discovery workflows

[Brendonovich]

Summary

• migrate provider, project, path, directory, MCP, and session-search workflows
• normalize current project mutations and directory results
• retain remote-server tab and navigation behavior

Validation

• bun typecheck in packages/app
• directory picker and command palette tests
• remote navigation E2E coverage

Stack

1. chore(app): vendor v2 promise client #38467
2. feat(app): add dual-server compatibility #38462
3. feat(app): support current event transport #38464
4. feat(app): project current server state #38459
5. feat(app): render current session timeline #38466
6. feat(app): migrate session interactions #38461
7. feat(app): migrate discovery workflows #38465 👈 current
8. feat(app): support current review data #38460
9. feat(app): support current pty transport #38463
10. fix(app): use current default model #38603