Initial GeoIntel V1 foundation

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+# Performance Budgets
+
+GeoIntel will eventually process large geospatial files. V1 must make limits explicit.
+
+## V1 file limits
+
+- Default max upload: 500 MB.
+- Raster preview should not load full large raster into frontend memory.
+- Backend metadata extraction should stream or sample where possible.
+
+## Processing rules
+
+- Long operations must become jobs after foundation is complete.
+- V1 can run small fixture operations synchronously if documented.
+- Tile generation should avoid keeping all tiles in memory.
+
+## Frontend budgets
+
+- Avoid rendering thousands of features directly without simplification/clustering.
+- Use map layers for GeoJSON, not huge DOM lists.
+- Paginate dataset and analysis lists if needed.
+
+## Database indexes
+
+Required indexes:
+
+- spatial index on `areas.geometry`
+- spatial index on `vector_features.geometry`
+- spatial index on `detections.geometry`
+- foreign key indexes for project/dataset/analysis lookups
+
+## Known V1 limitation
+
+Full production-scale remote sensing processing is not required in V1. The product must demonstrate correct architecture and working small/medium workflows.