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+# Deep Dive — Execution Runbook
+
+> Parent: [#830](http://143.198.27.163:3000/Timmy_Foundation/the-nexus/issues/830)  
+> Location: `docs/DEEPSDIVE_EXECUTION.md`  
+> Updated: 2026-04-05  
+> Owner: @ezra
+
+## Quick Start
+
+Zero-to-briefing in 10 minutes:
+
+```bash
+cd /root/wizards/the-nexus
+
+# 1. Configure (~5 min)
+export DEEPDIVE_TTS_PROVIDER=openai        # or "elevenlabs" or "piper"
+export OPENAI_API_KEY=sk-...               # or ELEVENLABS_API_KEY
+export DEEPDIVE_TELEGRAM_BOT_TOKEN=...     # BotFather
+export DEEPDIVE_TELEGRAM_CHAT_ID=...       # Your Telegram chat ID
+
+# 2. Test run (~2 min)
+./bin/deepdive_orchestrator.py --dry-run
+
+# 3. Full delivery (~5 min)
+./bin/deepdive_orchestrator.py --date $(date +%Y-%m-%d)
+```
+
+---
+
+## Provider Decision Matrix
+
+| Provider | Cost | Quality | Latency | Setup Complexity | Best For |
+|----------|------|---------|---------|------------------|----------|
+| **Piper** | Free | Medium | Fast (local) | High (model download) | Privacy-first, offline |
+| **ElevenLabs** | $5/mo | High | Medium (~2s) | Low | Production quality |
+| **OpenAI** | ~$0.015/1K chars | Good | Fast (~1s) | Low | Quick start, good balance |
+
+**Recommendation**: Start with OpenAI (`tts-1` model, `alloy` voice) for immediate results. Migrate to ElevenLabs for final polish if budget allows.
+
+---
+
+## Phase-by-Phase Testing
+
+### Phase 1: Aggregation Test
+```bash
+./bin/deepdive_aggregator.py --sources arxiv_cs_ai --output /tmp/test_agg.json
+cat /tmp/test_agg.json | jq ".metadata"
+```
+
+### Phase 2: Filtering Test (via Orchestrator)
+```bash
+./bin/deepdive_orchestrator.py --date 2026-04-05 --stop-after phase2
+ls ~/the-nexus/deepdive_state/2026-04-05/ranked.json
+```
+
+### Phase 3: Synthesis Test (requires LLM setup)
+```bash
+export OPENAI_API_KEY=sk-...
+./bin/deepdive_orchestrator.py --date 2026-04-05 --stop-after phase3
+cat ~/the-nexus/deepdive_state/2026-04-05/briefing.md
+```
+
+### Phase 4: TTS Test
+```bash
+echo "Hello from Deep Dive. This is a test." | ./bin/deepdive_tts.py --output /tmp/test
+ls -la /tmp/test.mp3
+```
+
+### Phase 5: Delivery Test
+```bash
+./bin/deepdive_delivery.py --audio /tmp/test.mp3 --caption "Deep Dive test" --dry-run
+./bin/deepdive_delivery.py --audio /tmp/test.mp3 --caption "Deep Dive test"
+```
+
+---
+
+## Environment Variables Reference
+
+### Required
+| Variable | Purpose | Example |
+|----------|---------|---------|
+| `DEEPDIVE_TTS_PROVIDER` | TTS adapter selection | `openai`, `elevenlabs`, `piper` |
+| `OPENAI_API_KEY` or `ELEVENLABS_API_KEY` | API credentials | `sk-...` |
+| `DEEPDIVE_TELEGRAM_BOT_TOKEN` | Telegram bot auth | `123456:ABC-DEF...` |
+| `DEEPDIVE_TELEGRAM_CHAT_ID` | Target chat | `@yourusername` or `-1001234567890` |
+
+### Optional
+| Variable | Default | Description |
+|----------|---------|-------------|
+| `DEEPDIVE_TTS_VOICE` | `alloy` / `matthew` | Voice ID |
+| `DEEPDIVE_OUTPUT_DIR` | `~/the-nexus/deepdive_state` | State storage |
+| `DEEPDIVE_LLM_PROVIDER` | `openai` | Synthesis LLM |
+| `DEEPDIVE_MAX_ITEMS` | `10` | Items per briefing |
+
+---
+
+## Cron Installation
+
+Daily 6 AM briefing:
+
+```bash
+# Add to crontab
+crontab -e
+
+# Entry:
+0 6 * * * cd /root/wizards/the-nexus && ./bin/deepdive_orchestrator.py --date $(date +\%Y-\%m-\%d) >> /var/log/deepdive.log 2>&1
+```
+
+Verify cron environment has all required exports by adding to `~/.bashrc` or using absolute paths in crontab.
+
+---
+
+## Troubleshooting
+
+### "No items found" from aggregator
+- Check internet connectivity
+- Verify arXiv RSS is accessible: `curl http://export.arxiv.org/rss/cs.AI`
+
+### "Audio file not valid" from Telegram
+- Ensure MP3 format, reasonable file size (< 50MB)
+- Test with local playback: `mpg123 /tmp/test.mp3`
+
+### "Telegram chat not found"
+- Use numeric chat ID for groups: `-1001234567890`
+- For personal chat, message @userinfobot
+
+### Piper model not found
+```bash
+mkdir -p ~/.local/share/piper
+cd ~/.local/share/piper
+wget https://huggingface.co/rhasspy/piper-voices/resolve/v1.0.0/en/en_US/lessac/medium/en_US-lessac-medium.onnx
+wget https://huggingface.co/rhasspy/piper-voices/resolve/v1.0.0/en/en_US/lessac/medium/en_US-lessac-medium.onnx.json
+```
+
+---
+
+## Architecture Recap
+
+```
+┌─────────────────────────────────────────────────────────────────────────────┐
+│                           D E E P   D I V E   V1 .1                         │
+├─────────────────────────────────────────────────────────────────────────────┤
+│                                                                             │
+│  ┌─────────────────┐    ┌─────────────┐    ┌──────────────┐               │
+│  │ deepdive_aggregator.py │ deepdive_orchestrator.py │                │
+│  │   (arXiv RSS)   │───▶│  (filter)   │───▶│  (synthesize)│───▶ ...      │
+│  └─────────────────┘    └─────────────┘    └──────────────┘               │
+│                                                         │                   │
+│                              deepdive_tts.py ◀──────────┘                   │
+│                                 (TTS adapter)                               │
+│                                       │                                     │
+│                              deepdive_delivery.py                           │
+│                            (Telegram voice msg)                             │
+└─────────────────────────────────────────────────────────────────────────────┘
+```
+
+---
+
+## Next Steps for Full Automation
+
+- [ ] **LLM Integration**: Complete `orchestrator.phase3()` with LLM API call
+- [ ] **Prompt Engineering**: Design briefing format prompt with Hermes context
+- [ ] **Source Expansion**: Add lab blogs (OpenAI, Anthropic, DeepMind)
+- [ ] **Embedding Filter**: Replace keyword scoring with semantic similarity
+- [ ] **Metrics**: Track delivery success, user engagement, audio length
+
+**Status**: Phases 1, 2, 4, 5 scaffolded and executable. Phase 3 synthesis awaiting LLM integration.