feat: add debug:true to all templates; add LLM_LOG_DIR config

templates/ad_copy.yml

@@ -1,5 +1,6 @@
 name: ad_copy
 description: "Write platform-specific advertising copy for paid campaigns across Meta, Google, and Amazon."
+debug: true
 system: agent_prompt
 agent_prompt:
   - "= identity.md"
@@ -93,12 +94,16 @@ adjudication:
     platform_specificity:
       weight: 30
       description: "Each platform's copy respects its format constraints and audience mindset"
+debug: true
     hook_strength:
       weight: 25
       description: "Headlines and opening lines earn attention without resorting to clickbait"
+debug: true
     cta_quality:
       weight: 25
       description: "CTAs are specific, low-friction, and matched to campaign objective"
+debug: true
     completeness:
       weight: 20
       description: "All three platforms present with full variant sets per format spec"
+debug: true