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_0082038C3CFBF852.json

@@ -0,0 +1,31 @@
+{
+  "call_id": "10122025_0082038C3CFBF852",
+  "turns": [
+    {
+      "speaker": "A",
+      "text": "No lo veo ahí tampoco.",
+      "start_time": 13.44,
+      "end_time": 14.72,
+      "confidence": 0.945638,
+      "duration_sec": 1.2800000000000011,
+      "word_count": 5
+    }
+  ],
+  "words": null,
+  "metadata": {
+    "audio_duration_sec": 22.0,
+    "audio_file": "10122025_0082038C3CFBF852.wav",
+    "language": "es",
+    "language_confidence": null,
+    "provider": "assemblyai",
+    "job_id": "f32b9cba-0035-4e68-915b-138efd6bda39",
+    "model_version": null,
+    "created_at": "2026-01-19T13:38:40.861425",
+    "processing_time_sec": 3.949217,
+    "overall_confidence": 0.945638,
+    "speaker_count": 1
+  },
+  "full_text": "No lo veo ahí tampoco.",
+  "total_turns": 1,
+  "total_words": 5
+}