Timeline added

AGENTS.md

@@ -24,8 +24,8 @@ Core files:
 Top-level exported data shape from `src/data/yard.js`:
 
 - `type: "FeatureCollection"`
-- `schemaVersion: 1`
-- `lifecycleFields: { startDate: "date", endDate: "date" }`
+- `schemaVersion: 2`
+- `lifecycleFields: { plantedDate: "date", removedDate: "date" }`
 - `featureTypes: [...]`
 - `features: [...]`
 - `groups: [...]`
@@ -36,8 +36,8 @@ Each feature currently exports:
 - `properties.kind`
 - `properties.label`
 - `properties.name`
-- `properties.startDate`
-- `properties.endDate`
+- `properties.plantedDate`
+- `properties.removedDate`
 - `properties.parentId`
 - `properties.groupIds`
 - `properties.details`