Initial global Obsidian config

Shared config extracted from obsidian-config; vault-specific files (bookmarks.json, daily-notes.json) excluded.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Claude-Session: https://claude.ai/code/session_01ASYabtTgxSxJPjxPmBK9PJ

plugins/calendar/manifest.json

@@ -0,0 +1,10 @@
+{
+  "id": "calendar",
+  "name": "Calendar",
+  "description": "Calendar view of your daily notes",
+  "version": "1.5.10",
+  "author": "Liam Cain",
+  "authorUrl": "https://github.com/liamcain/",
+  "isDesktopOnly": false,
+  "minAppVersion": "0.9.11"
+}