Add Pipline

Pipline.md

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+```mermaid
+flowchart TD
+A[Raw GPS Records] --> B[Anomaly Detection]
+B --> C[DBSCAN Clustering]
+C --> D{Stop Cluster?}
+D -->|Yes| E[Collapse to Centroid]
+D -->|No| F[Keep Points]
+E --> G[Douglas-Peucker Simplification]
+F --> G
+G --> H[OSRM Map Matching]
+H --> I{Gap Detected?}
+I -->|Yes| J[Route via OSRM]
+I -->|No| K[Continue]
+J --> L[Aggregate Distances]
+K --> L
+L --> M[Generate JSON]
+M --> N[Render in Leaflet]