Split audits into Weigh Ins (bulk) and Bin Checks (discrete)

Replaces the unified audit system with two purpose-built flows:
- Weigh Ins: rebranded audit flow for bulk products (Flower, Concentrate,
  Tincture) with scale weigh, container weigh, and estimate modes
- Bin Checks: new bin-level presence check — select a bin, scan every item,
  resolve discrepancies (wrong bin, unknown, missing), auto-records presence
  audits on verified items

Adds cadence_days and last_checked to bins table, with per-bin overdue
tracking on the dashboard and bins view.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/routes/bootstrap.ts

@@ -70,7 +70,14 @@ bootstrapRouter.get("/bootstrap", (_req, res) => {
     .all();
   const shops = db.prepare("SELECT * FROM shops ORDER BY id").all();
   const brands = db.prepare("SELECT * FROM brands ORDER BY id").all();
-  const bins = db.prepare("SELECT id, name, capacity FROM bins ORDER BY id").all();
+  const binsRaw = db.prepare("SELECT id, name, capacity, cadence_days, last_checked FROM bins ORDER BY id").all() as { id: string; name: string; capacity: number; cadence_days: number; last_checked: string | null }[];
+  const bins = binsRaw.map((b) => ({
+    id: b.id,
+    name: b.name,
+    capacity: b.capacity,
+    cadenceDays: b.cadence_days,
+    lastChecked: b.last_checked,
+  }));
   const strains = db
     .prepare<[], StrainRow>("SELECT * FROM strains ORDER BY name COLLATE NOCASE")
     .all();