Initial GeoIntel V1 foundation

docs/CODEX_PHASE_2_PROMPT.md

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+# Codex Phase 2 Prompt — Dataset Manager + Raster/Vector Metadata
+
+Read first:
+
+- `docs/DATA_CATALOG.md`
+- `docs/RASTER_OPERATIONS_SPEC.md`
+- `docs/VECTOR_OPERATIONS_SPEC.md`
+- `docs/API_SPECIFICATION.md`
+- `docs/STORAGE_ARCHITECTURE.md`
+
+## Mission
+
+Implement dataset upload and metadata extraction for raster and vector data.
+
+## Required features
+
+- Upload endpoint for datasets.
+- Save original file unchanged.
+- Compute checksum.
+- Detect raster vs vector.
+- Extract raster metadata with Rasterio.
+- Extract vector metadata with GeoPandas/Fiona.
+- Store metadata in dataset record.
+- Generate basic preview for raster if feasible.
+- Add tests with small fixtures.
+
+## Rules
+
+- Do not require external production datasets for tests.
+- Use small test fixtures.
+- If GDAL/Rasterio dependency issues exist, document clearly and keep code structured.
+- Do not fake metadata.