feat(gtm): add aspect ratio & corporate design; fix(market): harden backend logging & json parsing

config.py

@@ -97,6 +97,14 @@ class Config:
     PROCESSING_BRANCH_BATCH_SIZE = 20
     SERPAPI_DELAY = 1.5
 
+    # --- (NEU) GTM Architect: Stilvorgabe für Bildgenerierung ---
+    CORPORATE_DESIGN_PROMPT = (
+        "cinematic industrial photography, sleek high-tech aesthetic, futuristic but grounded reality, "
+        "volumetric lighting, sharp focus on modern technology, 8k resolution, photorealistic, "
+        "highly detailed textures, cool steel-blue color grading with subtle safety-yellow accents, "
+        "wide angle lens, shallow depth of field."
+    )
+
     # --- Plausibilitäts-Schwellenwerte ---
     PLAUSI_UMSATZ_MIN_WARNUNG = 50000
     PLAUSI_UMSATZ_MAX_WARNUNG = 200000000000