conductor(track): add TIER2_STARTER.md for video_analysis_campaign dispatch
3 prompt templates for Tier 2 autonomous agents:
1. Umbrella Tier 2 (Phase 0+1+2 init): installs tooling, builds 5 scripts, scaffolds 12 children
2. Per-child Tier 2 (one child's 5-phase pipeline): Acquire, Keyframes, OCR, Synthesis, Verification
3. Synthesis Tier 2 (after all 12 children): cross-cutting per_video_summary.md + report.md
Includes: file-read order, key risks, hard constraints, verification criteria, per-track Tier 2 dispatch commands, and a quick-reference table.
ed
3529161b0f