feat(mobile): rename sessions from detail title

[iscekic]

Summary

• make a loaded session detail title tappable and open the shared rename modal
• reuse the existing session rename mutation for optimistic list/header updates, rollback, retry feedback, and serialization
• add reducer and mutation coverage for loading, success, failure, repeated renames, and session changes

Verification

• pnpm test (129 files, 841 tests)
• pnpm typecheck
• pnpm lint
• pnpm check:unused
• pnpm format:check
• git diff --check
• iOS simulator: title tap, modal prefill/save, header/list persistence, reopen persistence, and cancel/reset passed before the final rollback-only repair
• latest-diff repeat E2E was blocked before feature interaction by the local post-OTP simulator state on two clean claimed devices; the final repair is covered by the repeated-rename regression test

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Executive Summary

Reviewed the mobile session-title-rename feature (reducer, hook, mutation, and header wiring) and found no correctness, security, or reliability issues in the changed lines.

Files Reviewed (7 files)

• apps/mobile/src/components/agents/session-detail-content.tsx
• apps/mobile/src/components/agents/session-detail-rename-state.ts
• apps/mobile/src/components/agents/session-detail-rename-state.test.ts
• apps/mobile/src/components/agents/use-session-detail-rename.ts
• apps/mobile/src/components/screen-header.tsx
• apps/mobile/src/lib/hooks/use-session-mutations.ts
• apps/mobile/src/lib/hooks/use-session-mutations.test.ts

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_{Reviewed by claude-sonnet-5 · Input: 48 · Output: 7.6K · Cached: 1.3M}

_{Review guidance: REVIEW.md from base branch main}