Subagent sessions were missing tool call displays because the gateway's
passive subscribe mode (agent.subscribe unsupported) only broadcasts
assistant + lifecycle events, not tool events.
Three fixes:
- Use start-mode GatewayProcessHandle for subagent follow-up messages
so the agent RPC streams all events (including tools) on the same
WebSocket connection
- Enrich persisted subagent JSONL at load time from the gateway's
on-disk session transcript when tool-invocation parts are missing
- Best-effort enrichment at finalization time from gateway transcript
for subscribe-only runs that didn't receive tool events
- Removed unused functions related to session index management.
- Added DELETE endpoint to remove a web chat session and its associated file.
- Added PATCH endpoint to update session metadata, including renaming sessions.
- Streamlined file writing for new session creation.
Restore backend/logic features that were incorrectly auto-merged from the
design branch:
- Spreadsheet viewer (xlsx, csv, ods, etc.) and xlsx dependency
- HTML iframe viewer with source toggle
- Directory picker modal for workspace creation
- Workspace registry for custom-path workspaces
- Session auto-discovery for orphaned sessions
- Workspace init seeding (CRM objects, DuckDB, templates, bootstrap files)
- Symlink resolution and showHidden in tree/browse routes
- Upload to workspace assets/ instead of hidden ~/.ironclaw/uploads/
- Webpack dev watcher config (next.config.ts)
- router.push for back-button navigation history
