File tree "+" button (Bug 1):
- Replace fragile fetch/blob attachment bridge with @filepath text insertion
- Works identically on web and Electron (pure text, no /api/files/raw fetch)
- Remove unused mimeFromFilename helper
Model selection follows session (Bug 2):
- page.tsx: include model/provider_id in session creation request
- [id]/page.tsx: add sessionInfoLoaded gate — ChatView only mounts after
session metadata is fetched, preventing stale localStorage fallback
- SplitColumn.tsx: same sessionInfoLoaded gate for split-pane mode
- ChatView.tsx: useEffect sync only overrides model/provider when props
are non-empty; empty = genuinely no model saved (old/imported sessions)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
