feat: add animated GIFs + clean vault
GIFs (Remotion-rendered, FFmpeg palette-optimized):
- wiki/meta/wiki-graph-grow.gif (285KB, 6s, 15fps)
Shows knowledge graph nodes appearing, coloring by type, edges connecting
Color-coded: cyan=navigation, blue=concepts, purple=entities, green=sources
- wiki/meta/workflow-loop.gif (227KB, 5s, 15fps)
Animated 4-step cycle: Drop Source → Claude Reads → Wiki Grows → Query
README: both GIFs shown side-by-side after the cover
Copyright clean-up (committed together):
- Removed Nate Herk source page and all 13 references
- Vault now 100% original content (3 concepts + 1 entity + navigation)
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