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)

References/Steph Ango.md

@@ -0,0 +1,18 @@
+---
+categories:
+  - "[[People]]"
+type:
+  - "[[Authors]]"
+org:
+  - "[[Obsidian]]"
+created: 2023-09-12
+twitter: kepano
+url: https://stephango.com/
+---
+## Clippings
+
+![[Clippings.base#Author]]
+
+## Meetings
+
+![[Meetings.base#Person]]