fix: Findagram brands page crash and PWA icon errors

- Fix mapBrandForUI to use correct 'brand' field from API response
- Add null check in Brands.jsx filter to prevent crash on undefined names
- Fix BrandPenetrationService sps.brand_name -> sps.brand_name_raw
- Remove missing logo192.png and logo512.png from PWA manifest

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/src/services/analytics/BrandPenetrationService.ts

@@ -75,7 +75,7 @@ export class BrandPenetrationService {
           DATE(sps.captured_at) AS date,
           COUNT(DISTINCT sps.dispensary_id) AS dispensary_count
         FROM store_product_snapshots sps
-        WHERE sps.brand_name = $1
+        WHERE sps.brand_name_raw = $1
           AND sps.captured_at >= $2
           AND sps.captured_at <= $3
           AND sps.is_in_stock = TRUE
@@ -368,23 +368,23 @@ export class BrandPenetrationService {
     const result = await this.pool.query(`
       WITH start_counts AS (
         SELECT
-          brand_name,
+          brand_name_raw AS brand_name,
           COUNT(DISTINCT dispensary_id) AS dispensary_count
         FROM store_product_snapshots
         WHERE captured_at >= $1 AND captured_at < $1 + INTERVAL '1 day'
-          AND brand_name IS NOT NULL
+          AND brand_name_raw IS NOT NULL
           AND is_in_stock = TRUE
-        GROUP BY brand_name
+        GROUP BY brand_name_raw
       ),
       end_counts AS (
         SELECT
-          brand_name,
+          brand_name_raw AS brand_name,
           COUNT(DISTINCT dispensary_id) AS dispensary_count
         FROM store_product_snapshots
         WHERE captured_at >= $2 - INTERVAL '1 day' AND captured_at <= $2
-          AND brand_name IS NOT NULL
+          AND brand_name_raw IS NOT NULL
           AND is_in_stock = TRUE
-        GROUP BY brand_name
+        GROUP BY brand_name_raw
       )
       SELECT
         COALESCE(sc.brand_name, ec.brand_name) AS brand_name,