feat(public-berths): expose booleans, metric variants, timestamps

Bring the public berth feed to verbatim NocoDB parity (all fields
except Price, which is held pending an explicit policy decision per
the audit follow-ups Q4). Adds:

- Berth Approved (boolean)
- Water Depth (number)
- Width Is Minimum / Water Depth Is Minimum (boolean)
- Length / Width / Draft / Water Depth / Nominal Boat Size (Metric)
- CreatedAt / UpdatedAt (ISO strings, useful for cache invalidation)

Booleans pass through as nullable to preserve NocoDB's tri-state
checkbox semantics (true / false / unset). Test fixtures cover the
new fields end-to-end including the null-passthrough case.

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

src/lib/services/public-berths.ts

@@ -48,6 +48,17 @@ export interface PublicBerth {
   'Bollard Capacity': string | null;
   'Nominal Boat Size': number | null;
   Access: string | null;
+  'Berth Approved': boolean | null;
+  'Water Depth': number | null;
+  'Width Is Minimum': boolean | null;
+  'Water Depth Is Minimum': boolean | null;
+  'Length (Metric)': number | null;
+  'Width (Metric)': number | null;
+  'Draft (Metric)': number | null;
+  'Water Depth (Metric)': number | null;
+  'Nominal Boat Size (Metric)': number | null;
+  CreatedAt: string;
+  UpdatedAt: string;
   'Map Data'?: PublicMapData;
 }
 
@@ -126,6 +137,17 @@ export function toPublicBerth(
     'Bollard Capacity': toString(berth.bollardCapacity),
     'Nominal Boat Size': toNumber(berth.nominalBoatSize),
     Access: toString(berth.access),
+    'Berth Approved': berth.berthApproved,
+    'Water Depth': toNumber(berth.waterDepth),
+    'Width Is Minimum': berth.widthIsMinimum,
+    'Water Depth Is Minimum': berth.waterDepthIsMinimum,
+    'Length (Metric)': toNumber(berth.lengthM),
+    'Width (Metric)': toNumber(berth.widthM),
+    'Draft (Metric)': toNumber(berth.draftM),
+    'Water Depth (Metric)': toNumber(berth.waterDepthM),
+    'Nominal Boat Size (Metric)': toNumber(berth.nominalBoatSizeM),
+    CreatedAt: berth.createdAt.toISOString(),
+    UpdatedAt: berth.updatedAt.toISOString(),
     ...(mapMapData(mapData) ? { 'Map Data': mapMapData(mapData)! } : {}),
   };
 }