deploy.sh: run seed_model_pricing.py after container startup

Without this step the model_pricing collection is empty and all LLM
costs are recorded as $0. Seed is idempotent — safe on every deploy.
Also wait for backend container readiness before running migrations.

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

deploy.sh

@@ -68,9 +68,32 @@ fi
 
 # ── Step 4: Rebuild and restart backend + mongo ───────────────────────────────
 echo ""
-echo "[4/4] Rebuilding and restarting Docker services..."
+echo "[4/5] Rebuilding and restarting Docker services..."
 docker compose up -d --build
 
+# Wait for backend to be healthy before running migrations
+echo "Waiting for backend container to be healthy..."
+TRIES=0
+until docker compose exec backend python -c "import sys; sys.exit(0)" 2>/dev/null; do
+    TRIES=$((TRIES + 1))
+    if [ "$TRIES" -ge 30 ]; then
+        echo "ERROR: Backend container did not become ready in time."
+        docker compose logs --tail=30 backend
+        exit 1
+    fi
+    sleep 2
+done
+echo "✓ Backend container is ready"
+
+# ── Step 5: Run migrations / seed scripts ────────────────────────────────────
+echo ""
+echo "[5/5] Running migrations..."
+
+# Seed model pricing (idempotent — safe to run on every deploy)
+echo "  → seed_model_pricing.py"
+docker compose exec backend python scripts/seed_model_pricing.py
+echo "  ✓ Model pricing seeded"
+
 echo ""
 echo "Container status:"
 docker compose ps