Publish curated GeoIntel source snapshot

contracts/events/event-contracts.md

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+# Event Contracts
+
+GeoIntel uses events to document state transitions, even if V1 implements them as database records/log entries rather than a full event bus.
+
+## Event names
+
+- ProjectCreated
+- AreaCreated
+- DatasetUploaded
+- DatasetMetadataExtracted
+- RasterTiled
+- VectorImported
+- DetectionQueued
+- DetectionStarted
+- DetectionCompleted
+- DetectionFailed
+- SegmentationCompleted
+- QualityCheckCompleted
+- ExportGenerated
+
+## Event shape
+
+```json
+{
+  "event_id": "uuid",
+  "event_type": "DatasetUploaded",
+  "project_id": "uuid",
+  "dataset_id": "uuid",
+  "analysis_run_id": null,
+  "timestamp": "ISO-8601",
+  "payload": {}
+}
+```
+
+## Implementation rule
+
+Every long-running workflow must create at least one event at start and one at completion/failure.