5bea28e4e2
- Add TaskPanelEntryKind enum (Background, ModelReasoning) to app.rs - Add ReasoningEffort::display_label_for_provider() — maps Max→xhigh for Codex - Sidebar: new 'Model reasoning' section above 'Background commands' - Transcript: rename 'thinking' → 'reasoning' label - Model picker: effort rows use provider-aware labels - Subagent routing: tag entries with kind::Background - Tests: kind assertions in task entry + effort display label tests Refs: #2984 (sidebar+reasoning surface for Codex and all-models theme)