feat: subtractive editing as default strategy

README.md

@@ -11,6 +11,7 @@ An agent skill that helps plan video edits through iterative dialogue — transc
 - **Artifact indexing** — JSON file tracks all transcriptions, clips, and frames with relative paths to avoid duplicate processing across sessions
 - **Vision analysis guidance** — binary-search-style frame sampling strategy; works with any vision-capable model the agent's runtime provides
 - **Iterative edit plans** — Markdown-table output (timecodes, segment descriptions, actions, transitions, notes) refined through follow-up questions
+- **Subtractive-first editing** — defaults to delete-boring-parts strategy for coherent timelines; supports additive and hybrid modes for Shorts/highlight reels
 - **Agent-agnostic** — no platform-specific tool names; works with any agent framework (Hermes, Claude Code, Codex, etc.)
 
 ## Quick Start
@@ -55,7 +56,7 @@ For Hermes Agent specifically, clone into `~/.hermes/skills/media/`. For other a
 ```
 1. Check dependencies (ffmpeg, uv, python3)
 2. Gather inputs (video path + audio track index)
-3. Ask editing requirements
+3. Ask editing requirements (including subtractive vs additive strategy)
 4. Transcribe audio (skip if cached in index)
 5. Extract clips & frames on demand (agent decides when transcript is insufficient)
 6. Analyze frames with vision model (binary-search-style sampling)