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/obsidian-hider/data.json

@@ -0,0 +1,13 @@
+{
+  "hideStatus": true,
+  "hideTabs": false,
+  "hideScroll": false,
+  "hideSidebarButtons": false,
+  "hideTooltips": true,
+  "hideFileNavButtons": false,
+  "hideSearchSuggestions": false,
+  "hideSearchCounts": false,
+  "hideInstructions": false,
+  "hidePropertiesReading": false,
+  "hideVault": false
+}