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      "mode": "verified_prior_release_data",
      "baseline_manifest_sha256": "74ea376b7e0817de2d9e9a6a2bdb8ee6c0190fcf0e7e88d52a51ab8686d913d5",
      "baseline_built_utc": "2026-09-10T19:08:22.224196+00:00",
      "database_mtime_ns": 1788953767904543374,
      "note": "UI, record identity hypotheses, vertical structure and local canopy-change model updated outside Dropbox. Carried-forward data and complete canopy history verified against the prior upload manifest; regenerated products verified against their own manifests from the same snapshot.",
      "tile_version": "20260918015343"
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    "derived_products": {
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      "vertical_structure": "data/structure/manifest.json",
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      "source_audit": "data/identity/source-audit.json"
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  "v5_changes": [
    "All 3,149 survey tiles completed successfully, including 16 retries.",
    "V5 crown dimensions use 2024 point-cloud structure and aerial NDVI.",
    "Every previous ALTO tree ID remains available. Current representatives link to original source records.",
    "Crown identity uses actual containment and polygon intersection; shared crowns can contain several trees.",
    "Unverified notable-tree positions are excluded from automatic crown attachment. Council renumbering has a versioned crosswalk.",
    "Existing service and trunk sensitivity equations use the new crown dimensions once per representative. Earlier estimates remain in the full records.",
    "Lower vegetation is available as separate layers and excluded from tree service totals.",
    "Earlier crown outlines are retained outside the new survey footprint.",
    "KYTE nearby matching uses the same current representatives. Saved observations and original IDs remain valid."
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  "limitations_v5": [
    "Segmentation changes are not tree removals or growth observations.",
    "A crown can contain more than one tree, and a multi-stem tree can remain split.",
    "Three polygon validity repairs and four area corrections are logged; original outputs are preserved.",
    "Growth-form predictions and historical matching were not refitted on v5 crowns.",
    "The earlier fitted forecast is applied to current crown height; its original benchmark does not validate this transfer. Nearby-history weighting awaits refreshed spatial matching.",
    "The service, DBH and root coefficients remain sensitivity assumptions requiring field calibration.",
    "Summed crown areas include overlaps and are not a measure of land-cover percentage."
  ]
}