docs: update README and AGENTS.md for characteristics, tracks, endpoint changes

- Add Car Characteristics and Track Mapping feature sections
- Update project structure (8 routes, tracks store, new views)
- Update API contract (23 endpoints, add characteristics/tracks/build-track-model)
- Add Features and State Management sections to AGENTS.md

README.md

@@ -48,7 +48,7 @@ Web-based sim racing telemetry analysis client. Connects to [rusty-telemetry](ht
 - Polling at 250ms for responsive updates
 
 ### Session Management
-- Create analysis sessions with use case selection (Shift Points, Track Map, etc.)
+- Create analysis sessions with use case selection (Shift Points, Track Mapping)
 - Start/stop runs within a session to capture telemetry data
 - Complete sessions to trigger automatic analysis
 - Session detail view with run history and status
@@ -59,10 +59,16 @@ Web-based sim racing telemetry analysis client. Connects to [rusty-telemetry](ht
 - Recommended shift RPM from aggregated data
 - Detailed shift event table
 
-### Track Map
+### Car Characteristics
+- Aggregated shift-point profiles per car across all sessions
+- Expandable car cards showing per-gear RPM/speed ranges
+- Recommended shift RPM per car
+
+### Track Mapping
 - Canvas-rendered track boundaries from coordinate data
 - Center line computation from left/right boundary runs
 - Boundary legend with point counts
+- Persistent track models with track list and detail views
 - Responsive canvas that redraws on window resize
 
 ## Tech Stack
@@ -137,19 +143,22 @@ racecraft/
 ├── src/
 │   ├── main.ts                 # App bootstrap (Vue + Pinia + Router)
 │   ├── App.vue                 # Root layout with navigation
-│   ├── router/index.ts         # 6 routes with lazy loading
+│   ├── router/index.ts         # 8 routes with lazy loading
 │   ├── types/index.ts          # TypeScript interfaces matching API JSON shapes
 │   ├── api/client.ts           # Typed Axios client (all API endpoints)
 │   ├── stores/
 │   │   ├── telemetry.ts        # Live telemetry with polling + derived status
-│   │   └── sessions.ts         # Session CRUD, run management, analysis
+│   │   ├── sessions.ts         # Session CRUD, run management, analysis
+│   │   └── tracks.ts           # Track model list + detail
 │   ├── views/
 │   │   ├── DashboardView.vue   # System status, feeds, quick actions
 │   │   ├── LiveView.vue        # Real-time gauges and telemetry
 │   │   ├── SessionsView.vue    # Session list with create/delete
 │   │   ├── SessionDetailView.vue # Run workflow, complete, analyze
 │   │   ├── ShiftPointsView.vue # RPM charts and shift event table
-│   │   └── TrackMapView.vue    # Canvas track map renderer
+│   │   ├── CharacteristicsView.vue # Car characteristics aggregation
+│   │   ├── TracksView.vue      # Track model list
+│   │   └── TrackDetailView.vue # Canvas track map renderer
 │   ├── components/
 │   │   └── FeedStatus.vue      # Reusable feed card with health + telemetry
 │   └── assets/
@@ -160,7 +169,7 @@ racecraft/
 
 ## API Contract
 
-Racecraft consumes the rusty-telemetry REST API (19 endpoints). See the [rusty-telemetry README](https://codeberg.org/jhunnius/rusty-telemetry) for full endpoint documentation.
+Racecraft consumes the rusty-telemetry REST API (23 endpoints). See the [rusty-telemetry README](https://codeberg.org/jhunnius/rusty-telemetry) for full endpoint documentation.
 
 Key endpoints used:
 - `GET /api/live` — polled every 250ms–1000ms for live telemetry
@@ -168,6 +177,10 @@ Key endpoints used:
 - `POST /api/sessions/{id}/runs` / `POST /api/sessions/{id}/runs/{run_id}/stop` — run capture
 - `POST /api/sessions/{id}/complete` — complete session and trigger analysis
 - `GET /api/sessions/{id}/analysis` — retrieve analysis results
+- `GET /api/characteristics/cars` — aggregated car shift-point profiles
+- `GET /api/characteristics/cars/{car}` — detailed per-gear data for a car
+- `GET /api/tracks` / `GET /api/tracks/{track}` — track model list and detail
+- `POST /api/sessions/{id}/build-track-model` — build track model from session
 
 ## License