feat(industrial): add OSM provenance + sync state to IndustrialPark (PR 1/4)

First PR of the OSM-sync project. Adds the schema scaffolding so the
follow-up bulk-import PR can write OSM-sourced rows alongside the 50
hand-curated industrial parks already in the table without disturbing
public list/detail/map flows or the IndustrialListing FK relationship.

New enums:
- IndustrialParkOsmType: NODE | WAY | RELATION
- IndustrialParkDataSource:
    MANUAL          existing curated rows (default for the 50 backfilled)
    OSM             raw OSM import, hidden from public until promoted
    OSM_PROMOTED    admin-reviewed OSM row visible on the public list

New columns on IndustrialPark:
- dataSource           — drives public visibility + sync policy
- isPublic             — true for MANUAL, false for raw OSM
- osmType, osmId       — link to OSM entity (osmId UNIQUE)
- osmVersion, osmTags  — incremental sync state + raw tag bag (JSONB)
- boundary             — PostGIS MultiPolygon for park outline (Point
                         centroid stays in `location` for low-zoom render)
- osmLocked            — admin freeze flag; sync skips this row entirely
- lockedFields         — per-field freeze list; sync preserves listed cols
- lastSyncedAt         — last reconcile pass timestamp

New indexes:
- osmId                       — sync upsert lookup
- (dataSource, isPublic)      — public list filter
- boundary GiST               — viewport / bbox spatial queries
- lastSyncedAt                — cron staleness scan

Backfill behaviour: existing 20 rows automatically get
dataSource=MANUAL, isPublic=true via column defaults — no breaking
change for current consumers (frontend list, detail, map, admin
moderation, IndustrialListing FK).

Manually written migration SQL because Prisma cannot manage the
PostGIS Geometry type — `boundary` is added via AddGeometryColumn().

Next PRs:
- PR 2: bulk-import script (Overpass + osmium fallback)
- PR 3: bbox spatial API + frontend Mapbox layer (cluster + outlines)
- PR 4: monthly sync cron + admin diff/promote UI

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

prisma/schema.prisma

@@ -1083,6 +1083,27 @@ enum IndustrialParkStatus {
   FULL
 }
 
+/// OSM element type — way/relation are most common for industrial parks
+/// (polygon boundaries), node only used when the park has no traced area.
+enum IndustrialParkOsmType {
+  NODE
+  WAY
+  RELATION
+}
+
+/// Provenance of an IndustrialPark row. Used to filter what's shown on the
+/// public KCN list (only MANUAL + OSM_PROMOTED) versus the admin queue
+/// (everything, including raw OSM imports).
+enum IndustrialParkDataSource {
+  /// Human-curated by goodgo team; full business data (rents, fees, media).
+  MANUAL
+  /// Imported from OpenStreetMap, not yet vetted. Hidden from public list.
+  OSM
+  /// Imported from OSM and reviewed by an admin who promoted it to the
+  /// public catalog. Geometry/name still tracked against OSM via osmId.
+  OSM_PROMOTED
+}
+
 enum IndustrialPropertyType {
   INDUSTRIAL_LAND
   READY_BUILT_FACTORY
@@ -1150,6 +1171,39 @@ model IndustrialPark {
   /// Optional owning operator user (role=PARK_OPERATOR). NULL for parks not
   /// yet assigned to an operator account — admin still manages those.
   ownerId           String?
+
+  // ─── OSM provenance & sync state ─────────────────────────────────────────
+  /// Marker for where this row came from. Drives public visibility +
+  /// conflict-resolution policy during OSM sync.
+  dataSource        IndustrialParkDataSource             @default(MANUAL)
+  /// Hidden from the public list when false. OSM-imported rows default to
+  /// false until an admin promotes them; MANUAL rows default to true.
+  isPublic          Boolean                              @default(true)
+  /// OpenStreetMap entity that this row mirrors (NULL for purely manual rows).
+  /// `osmId` is unique because OSM ids are scoped per-type, but in practice
+  /// most industrial parks are `way` so collisions are vanishingly rare.
+  osmType           IndustrialParkOsmType?
+  osmId             BigInt?                              @unique
+  /// OSM `version` tag. Used during incremental sync to detect remote edits.
+  osmVersion        Int?
+  /// Full OSM tag bag, kept as JSONB for flexibility (we don't model every
+  /// possible tag — operator, website, addr:*, source, etc.).
+  osmTags           Json?
+  /// Polygon outline of the park as a MultiPolygon. NULL when the OSM entity
+  /// is a node (no traced area) or when sourced from a manual seed without
+  /// boundary tracing. `location` (Point) remains the centroid for low-zoom
+  /// rendering.
+  boundary          Unsupported("geometry(MultiPolygon, 4326)")?
+  /// When true the OSM sync cron skips this row entirely (admin froze it).
+  /// Useful for parks where OSM tag noise would overwrite curated data.
+  osmLocked         Boolean                              @default(false)
+  /// Per-field lock list. Even when `osmLocked = false`, the sync cron
+  /// preserves any column whose name appears here. Lets admins fix one
+  /// field (e.g. `name`) without freezing the whole row.
+  lockedFields      String[]                             @default([])
+  /// Last successful Overpass/PBF reconcile pass; NULL means never synced.
+  lastSyncedAt      DateTime?
+
   createdAt         DateTime                             @default(now())
   updatedAt         DateTime                             @updatedAt
 
@@ -1167,6 +1221,11 @@ model IndustrialPark {
   @@index([region, province, status])
   @@index([createdAt])
   @@index([ownerId])
+  // OSM sync access patterns
+  @@index([osmId])
+  @@index([dataSource, isPublic])
+  @@index([boundary], type: Gist)
+  @@index([lastSyncedAt])
 }
 
 model IndustrialListing {