feat: Add Render.com deployment support with production data

Render Configuration:
- render.yaml for declarative deployment
- requirements-dashboard.txt (lightweight deps for cloud)
- Updated .streamlit/config.toml for production
- Updated app.py to auto-detect production vs local data

Production Data:
- Added data/production/test-07/ with 30 real call analyses
- Updated .gitignore to allow data/production/

Documentation:
- Added Render.com section to DEPLOYMENT.md with step-by-step guide

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

data/production/test-07/transcripts/10122025_0082038C3CFBF3D2.json

@@ -0,0 +1,21 @@
+{
+  "call_id": "10122025_0082038C3CFBF3D2",
+  "turns": [],
+  "words": null,
+  "metadata": {
+    "audio_duration_sec": 13.0,
+    "audio_file": "10122025_0082038C3CFBF3D2.wav",
+    "language": "es",
+    "language_confidence": null,
+    "provider": "assemblyai",
+    "job_id": "93274654-720d-4560-9c08-7c6a2895bda6",
+    "model_version": null,
+    "created_at": "2026-01-19T13:38:18.007006",
+    "processing_time_sec": 5.093467,
+    "overall_confidence": 0.0,
+    "speaker_count": null
+  },
+  "full_text": "",
+  "total_turns": 0,
+  "total_words": 0
+}