feat(#439): enrich sessions tab with dashboard features (#460)
* feat(#439): enrich sessions tab with dashboard features
Add session stats (total/active counts), per-session source icons,
active session badges, inline rename, bulk selection with toolbar,
prune old sessions dialog with configurable days threshold,
session prompt copy, single-session delete, and search highlighting.
- SessionInfo model: add source field
- New models: SessionStatsResponse, SessionRenameRequest,
BulkDeleteRequest, PruneRequest, SessionPromptResponse
- HermesApiService: add stats, rename, bulk delete, prune, prompt endpoints
- SessionsViewModel: stats loading, bulk select, rename, delete, prune
- SessionsScreen: stats row, source icons, active border, rename inline,
bulk mode with animated toolbar, prune dialog, search highlight
- strings.xml: new resources for all sessions UI features
* fix(#439): resolve CI compile errors
- Add explicit icon imports for Code, Language, Terminal
- Add missing clickable import
- Make highlightText non-composable by passing color params
- Fix combinedClickable usage on SessionCard
* fix(#439): address review findings
- Remove unused background import
- Add dedicated DELETE /api/sessions/{id} endpoint
- Refactor deleteSession to use dedicated endpoint
- Add confirmation dialogs for both single-session and bulk delete
- Surface statsError in the UI when stats load fails
- Add string resources for delete confirmation dialogs
* fix(#439): fix delegated property smart cast errors
- Capture statsError, errorMessage, sessionToDeleteConfirm in local vals
before null checks to avoid 'Smart cast impossible' on delegated props
* fix(#439): remove copy and rename buttons, keep delete only
* fix(#439): restore CheckCircle import
---------
Co-authored-by: M57 <hy4ri@users.noreply.github.com>
