feat(vault): track PARA layer (Categories/References/Notes/Daily/Clippings/Tags/Attachments/Presentations)

- Add 8 PARA directories to .gitignore whitelist (234 files)
- Completes dual-layer sync: LLM Wiki layer + PARA personal knowledge layer
- markdown_output/ remains excluded (transit zone)

Notes/Minimal Theme.md

@@ -0,0 +1,18 @@
+---
+categories:
+  - "[[Projects]]"
+type:
+  - "[[UI]]"
+org:
+  - "[[Obsidian]]"
+year: 2020
+url: https://minimal.guide
+status:
+  - "[[Active]]"
+---
+
+## To-do
+
+- [x] Color schemes
+- [x] E-ink mode
+- [x] Mobile support