feat(worker/ai): Gemini-lärar-tier för scan/detect/allergen + shadow-capture

- Utöka GeminiAamosClient med ANALYZE_MEAL_IMAGE, READ_NUTRITION_LABEL,
  READ_EXPIRY_DATE och READ_RECEIPT (vision-prompts mot kontraktsscheman).
- Lägg till apps/worker/src/lib/shadow-capture.ts: S3/local fallback,
  imageTraining-gating, ingen PII, aldrig faila användarvägen.
- Integrera capture i scan-processorn efter lyckad runTask med consentFlags.
- Lägg till @aws-sdk/client-s3 i worker samt eval:capture-skript.
- Uppdatera eval:scan till Wikimedia Special:FilePath + redirect-following.
- Exkludera .terraform i brand-guard för att undvika false positives.
- Uppdatera gemini-test för DEDUPLICATE_INVENTORY som unsupported.

apps/worker/src/eval/capture-eval.ts

@@ -0,0 +1,52 @@
+/**
+ * Best-effort verifiering av shadow-capture (ingen riktig AI, bara lagring).
+ *
+ *   S3_MODE=mock pnpm --filter @app/worker eval:capture
+ */
+import { captureTrainingSample } from "../lib/shadow-capture.js";
+
+async function main() {
+  const result = await captureTrainingSample({
+    taskType: "ANALYZE_FRIDGE_IMAGE",
+    inputS3Keys: ["uploads/test/fridge.jpg"],
+    output: {
+      items: [
+        {
+          detectedName: "Testmjölk",
+          canonicalIngredientId: null,
+          brand: "Testa",
+          estimatedQuantity: 1,
+          unit: "LITER",
+          bestBeforeDate: null,
+          confidence: 0.97,
+          requiresConfirmation: false,
+          boundingBox: null,
+        },
+      ],
+      imageQualityIssues: [],
+    },
+    modelVersion: "gemini-2.5-flash",
+    promptVersion: "gemini-fridge-v1",
+    latencyMs: 1234,
+    costUsd: 0.0001,
+    inputTokens: 400,
+    outputTokens: 120,
+    consentFlags: {
+      personalization: true,
+      anonymizedImprovement: true,
+      imageTraining: true,
+    },
+    readUrl: (key: string) => `http://localhost/v1/mock-s3/${encodeURIComponent(key)}?sig=dummy`,
+  });
+
+  if (!result.ok) {
+    console.error("[eval:capture] misslyckades:", result.error);
+    process.exit(1);
+  }
+  console.log(`[eval:capture] träningspar sparat på nyckel: ${result.key}`);
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});

apps/worker/src/eval/scan-eval.ts

@@ -40,7 +40,7 @@ interface ScanEvalCase {
 const CASES: ScanEvalCase[] = [
   {
     id: "arla-milk-fridge",
-    imageUrls: ["https://upload.wikimedia.org/wikipedia/commons/6/6c/Arla_Ko_Mellanmj%C3%B6lk_1L.jpg"],
+    imageUrls: ["https://commons.wikimedia.org/wiki/Special:FilePath/Arla_Ko_Mellanmj%C3%B6lk_1L.jpg?width=800"],
     locationType: "fridge",
     marketLocale: "sv-SE",
     checks: (items) => {
@@ -56,7 +56,7 @@ const CASES: ScanEvalCase[] = [
   },
   {
     id: "swedish-butter-fridge",
-    imageUrls: ["https://upload.wikimedia.org/wikipedia/commons/3/3e/Svenskt_Sm%C3%B6r_Normalsaltat_80-25_500g.jpg"],
+    imageUrls: ["https://commons.wikimedia.org/wiki/Special:FilePath/Svenskt_Sm%C3%B6r_Normalsaltat_80-25_500g.jpg?width=800"],
     locationType: "fridge",
     marketLocale: "sv-SE",
     checks: (items) => {