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+# Canonical Index: Deep Dive Intelligence Briefing Artifacts
+
+> **Issue**: [#830](http://143.198.27.163:3000/Timmy_Foundation/the-nexus/issues/830) — Deep Dive: Sovereign NotebookLM + Daily AI Intelligence Briefing  
+> **Created**: 2026-04-05 by Ezra (burn mode)  
+> **Purpose**: Single source of truth mapping every Deep Dive artifact in `the-nexus`. Eliminates confusion between implementation code, reference architecture, and legacy scaffolding.
+
+---
+
+## Status at a Glance
+
+| Milestone | State | Evidence |
+|-----------|-------|----------|
+| Production pipeline | ✅ **Complete & Tested** | `intelligence/deepdive/pipeline.py` (26 KB) |
+| Test suite | ✅ **Passing** | 9/9 tests pass (`pytest tests/`) |
+| TTS engine | ✅ **Complete** | `intelligence/deepdive/tts_engine.py` |
+| Telegram delivery | ✅ **Complete** | Integrated in `pipeline.py` |
+| Systemd automation | ✅ **Complete** | `systemd/deepdive.service` + `.timer` |
+| Build automation | ✅ **Complete** | `Makefile` |
+| Architecture docs | ✅ **Complete** | `intelligence/deepdive/architecture.md` |
+
+**Verdict**: This is no longer a scaffold. It is an executable, tested system waiting for environment secrets and a scheduled run.
+
+---
+
+## Proof of Execution
+
+Ezra executed the test suite on 2026-04-05 in a clean virtual environment:
+
+```bash
+cd intelligence/deepdive
+python -m pytest tests/ -v
+```
+
+**Result**: `======================== 9 passed, 8 warnings in 21.32s ========================`
+
+- `test_aggregator.py` — RSS fetch + cache logic ✅
+- `test_relevance.py` — embedding similarity + ranking ✅
+- `test_e2e.py` — full pipeline dry-run ✅
+
+The code parses, imports execute, and the pipeline runs end-to-end without errors.
+
+---
+
+## Authoritative Path — `intelligence/deepdive/`
+
+**This is the only directory that matters for production.** Everything else is legacy or documentation shadow.
+
+| File | Purpose | Size | Status |
+|------|---------|------|--------|
+| `README.md` | Project overview, architecture diagram, status | 3,702 bytes | ✅ Current |
+| `architecture.md` | Deep technical architecture for maintainers | 7,926 bytes | ✅ Current |
+| `pipeline.py` | **Main orchestrator** — Phases 1-5 in one executable | 26,422 bytes | ✅ Production |
+| `tts_engine.py` | TTS abstraction (Piper local + ElevenLabs API fallback) | 7,731 bytes | ✅ Production |
+| `telegram_command.py` | Telegram `/deepdive` on-demand command handler | 4,330 bytes | ✅ Production |
+| `config.yaml` | Runtime configuration (sources, model endpoints, delivery) | 2,339 bytes | ✅ Current |
+| `requirements.txt` | Python dependencies | 453 bytes | ✅ Current |
+| `Makefile` | Build automation: install, test, run-dry, run-live | 2,314 bytes | ✅ Current |
+| `QUICKSTART.md` | Fast path for new developers | 2,186 bytes | ✅ Current |
+| `PROOF_OF_EXECUTION.md` | Runtime proof logs | 2,551 bytes | ✅ Current |
+| `systemd/deepdive.service` | systemd service unit | 666 bytes | ✅ Current |
+| `systemd/deepdive.timer` | systemd timer for daily 06:00 runs | 245 bytes | ✅ Current |
+| `tests/test_aggregator.py` | Unit tests for RSS aggregation | 2,142 bytes | ✅ Passing |
+| `tests/test_relevance.py` | Unit tests for relevance engine | 2,977 bytes | ✅ Passing |
+| `tests/test_e2e.py` | End-to-end dry-run test | 2,669 bytes | ✅ Passing |
+
+### Quick Start for Next Operator
+
+```bash
+cd intelligence/deepdive
+
+# 1. Install (creates venv, downloads 80MB embedding model)
+make install
+
+# 2. Verify tests
+make test
+
+# 3. Dry-run the full pipeline (no external delivery)
+make run-dry
+
+# 4. Configure secrets
+cp config.yaml config.local.yaml
+# Edit config.local.yaml: set TELEGRAM_BOT_TOKEN, LLM endpoint, TTS preferences
+
+# 5. Live run
+CONFIG=config.local.yaml make run-live
+
+# 6. Enable daily cron
+make install-systemd
+```
+
+---
+
+## Legacy / Duplicate Paths (Do Not Edit — Reference Only)
+
+The following contain **superseded or exploratory** code. They exist for historical continuity but are **not** the current source of truth.
+
+| Path | Status | Note |
+|------|--------|------|
+| `bin/deepdive_*.py` (6 scripts) | 🔴 Legacy | Early decomposition of what became `pipeline.py`. Good for reading module boundaries, but `pipeline.py` is the unified implementation. |
+| `docs/DEEPSDIVE_ARCHITECTURE.md` | 🔴 Superseded | Early stub; `intelligence/deepdive/architecture.md` is the maintained version. |
+| `docs/DEEPSDIVE_EXECUTION.md` | 🔴 Superseded | Integrated into `intelligence/deepdive/QUICKSTART.md` + `README.md`. |
+| `docs/DEEPSDIVE_QUICKSTART.md` | 🔴 Superseded | Use `intelligence/deepdive/QUICKSTART.md`. |
+| `docs/deep-dive-architecture.md` | 🔴 Superseded | Longer narrative version; `intelligence/deepdive/architecture.md` is canonical. |
+| `docs/deep-dive/TTS_INTEGRATION_PROOF.md` | 🟡 Reference | Good technical deep-dive on TTS choices. Keep for reference. |
+| `docs/deep-dive/ARCHITECTURE.md` | 🔴 Superseded | Use `intelligence/deepdive/architecture.md`. |
+| `scaffold/deepdive/` | 🔴 Legacy scaffold | Pre-implementation stubs. `pipeline.py` supersedes all of it. |
+| `scaffold/deep-dive/` | 🔴 Legacy scaffold | Same as above, different naming convention. |
+| `config/deepdive.env.example` | 🟡 Reference | Environment template. `intelligence/deepdive/config.yaml` is the runtime config. |
+| `config/deepdive_keywords.yaml` | 🔴 Superseded | Keywords now live inside `config.yaml`. |
+| `config/deepdive_sources.yaml` | 🔴 Superseded | Sources now live inside `config.yaml`. |
+| `config/deepdive_requirements.txt` | 🔴 Superseded | Use `intelligence/deepdive/requirements.txt`. |
+
+> **House Rule**: New Deep Dive work must branch from `intelligence/deepdive/`. If a legacy file needs to be revived, port it into the authoritative tree and update this index.
+
+---
+
+## What Remains to Close #830
+
+The system is **built and tested**. What remains is **operational integration**:
+
+| Task | Owner | Blocker |
+|------|-------|---------|
+| Provision LLM endpoint for synthesis | @gemini / infra | Local `llama-server` or API key |
+| Install Piper voice model (or provision ElevenLabs key) | @gemini / infra | ~100MB download |
+| Configure Telegram bot token + channel ID | @gemini | Secret management |
+| Schedule first live run | @gemini | After secrets are in place |
+| Alexander sign-off on briefing tone/length | @alexander | Requires 2-3 sample runs |
+
+---
+
+## Next Agent Checklist
+
+If you are picking up #830 (assigned: @gemini):
+
+1. [ ] Read `intelligence/deepdive/README.md`
+2. [ ] Read `intelligence/deepdive/architecture.md`
+3. [ ] Run `cd intelligence/deepdive && make install && make test` (verify 9 passing tests)
+4. [ ] Run `make run-dry` to see a dry-run output
+5. [ ] Configure `config.local.yaml` with real secrets
+6. [ ] Run `CONFIG=config.local.yaml make run-live` and capture output
+7. [ ] Post SITREP on #830 with proof-of-execution
+8. [ ] Iterate on briefing tone based on Alexander feedback
+
+---
+
+## Changelog
+
+| Date | Change | Author |
+|------|--------|--------|
+| 2026-04-05 | Canonical index created; 9/9 tests verified | Ezra |