conductor(video_analysis): Initialize 12 child + 1 synthesis spec scaffolds

Each child spec is lightweight (~100 lines): references the umbrella, gives video details, specifies the 7 deliverables (transcript.json, frames/, ocr.md, report.md 1000-10000 LOC, summary.md), and the 5-phase pipeline.

Children in execution order:
1. cs229_building_llms (Stanford CS229, Cluster E)
2. probability_logic (Cluster A)
3. entropy_epiplexity (Cluster A)
4. score_dynamics_giorgini (Cluster A)
5. platonic_intelligence_kumar (Cluster B)
6. free_lunches_levin (Cluster B)
7. generic_systems_fields (Cluster C)
8. brain_counterintuitive (Cluster C)
9. neural_dynamics_miller (Cluster C)
10. multiscale_hoffman (Cluster C)
11. cs336_architectures (Stanford CS336, Cluster E)
12. creikey_dl_cv (Cluster D)

Plus 1 synthesis track (video_analysis_synthesis_20260621) blocked_by all 12 children.

conductor/tracks/video_analysis_probability_logic_20260621/spec.md

@@ -0,0 +1,93 @@
+# Track: Video Analysis — Probability Theory is an Extension of Logic
+
+**Status:** Not started (umbrella published 2026-06-21)
+**Type:** Research-only child track (Pass 1 of 3)
+**Owner:** Tier 2 Tech Lead (execution)
+**Cluster:** A (Math & information-theoretic foundations)
+
+> **Parent:** This is child #2 of the [video_analysis_campaign_20260621](../../video_analysis_campaign_20260621/) umbrella. See [umbrella spec.md](../../video_analysis_campaign_20260621/spec.md) for the full design and multi-pass context.
+
+---
+
+## 1. Video
+
+| Field | Value |
+|---|---|
+| **Title** | Probability Theory is an Extension of Logic |
+| **Author** | (unknown — verify during execution) |
+| **URL** | https://youtu.be/0yF9TvMeAzM |
+| **Cluster** | A (Math & information-theoretic foundations) |
+| **Slug** | `probability_logic` |
+| **Execution order** | #2 of 12 (pure math/logic; builds on CS229's ML setup) |
+
+---
+
+## 2. Deliverables
+
+| Artifact | Path | Target |
+|---|---|---|
+| Transcript (timestamped + plain) | `artifacts/transcript.json` | All segments |
+| Download log | `artifacts/download.log` | yt-dlp output |
+| Extracted unique frames | `artifacts/frames/*.jpg` | 50-500 frames |
+| Extraction metadata | `artifacts/extraction_meta.json` | Frame paths + hashes + timestamps |
+| OCR results | `artifacts/ocr.md` | Full OCR text per frame |
+| Deep-dive report | `report.md` | **1000-10000 LOC markdown** |
+| Quick summary | `summary.md` | 200-400 words |
+
+---
+
+## 3. Pipeline (5 phases)
+
+- [ ] **Phase 1: Acquire.** `extract_transcript.py` + `download_video.py`.
+- [ ] **Phase 2: Keyframes.** `extract_keyframes.py` with threshold 0.4.
+- [ ] **Phase 3: OCR.** `ocr_frames.py`.
+- [ ] **Phase 4: Synthesis.** Tier 3 worker: transcript + OCR + frames → `report.md` (1000-10000 LOC).
+- [ ] **Phase 5: Verification.** Idempotency + audit + end-of-track report.
+
+---
+
+## 4. Report structure (8 sections)
+
+Per umbrella spec §FR6.
+
+```
+# Probability Theory is an Extension of Logic
+**Source:** https://youtu.be/0yF9TvMeAzM
+**Author:** <verify>
+**Date Added to Campaign:** 2026-06-21
+**Cluster:** A
+**Slug:** probability_logic
+
+## 1. TL;DR
+## 2. Key Concepts
+## 3. Frame Analysis
+## 4. Transcript Highlights
+## 5. Mathematical / Theoretical Content  ← likely dominant
+## 6. Connections to Other Videos
+## 7. Open Questions
+## 8. References
+```
+
+---
+
+## 5. Connections
+
+- **Forward to:** `entropy_epiplexity` (info-theoretic framing), `score_dynamics_giorgini` (uses probability), `cs336_architectures` (transformer attention uses probability).
+- **Backward from:** `cs229_building_llms` (sets canonical ML vocabulary).
+- **Likely rich cross-references:** `entropy_epiplexity` (most direct — both about extending logic/math).
+
+---
+
+## 6. Verification
+
+- [ ] All 7 deliverables present
+- [ ] `report.md` 1000-10000 LOC
+- [ ] All 8 sections populated
+- [ ] Tests pass
+
+---
+
+## 7. See also
+
+- [Umbrella spec.md](../../video_analysis_campaign_20260621/spec.md)
+- [Umbrella README.md](../../video_analysis_campaign_20260621/README.md)