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

themes/Minimal/manifest.json

@@ -0,0 +1,8 @@
+{
+	"name": "Minimal",
+	"version": "8.2.1",
+	"minAppVersion": "1.9.0",
+	"author": "@kepano",
+	"authorUrl": "https://twitter.com/kepano",
+	"fundingUrl": "https://www.buymeacoffee.com/kepano"
+}