docs: remove all Nate Herk references from tracked files

- README.md: footer attribution + sources/ description
- ATTRIBUTION.md: removed Hot Cache & Cross-Project Patterns section
- wiki/getting-started.md: footer
- wiki/log.md: source reference
- wiki/meta/session note: inline mention

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

wiki/meta/claude-obsidian-v1.2.0-release-session.md

@@ -69,7 +69,6 @@ Full project rename executed:
 
 ### Legal Fixes
 - `LICENSE`: MIT license file created (was declared in plugin.json but file was missing)
-- `ATTRIBUTION.md`: credits Andrej Karpathy (LLM Wiki pattern), Nate Herk (hot cache pattern), SlRvb (ITS CSS), and all 4 bundled Obsidian plugins with their repos
 - `ITS-Dataview-Cards.css` + `ITS-Image-Adjustments.css`: GPL-2.0 attribution headers added
 
 ### .gitignore Tightened