Add 6 new command groups and expand existing sections

Adds CSS Snippets, Commands & Hotkeys, Obsidian Bases, History,
Workspace & Tabs, and Diff sections to command-reference.md.
Expands existing sections with missing commands (search:context,
daily:path, random, rename, bookmark add, plugins:restrict, theme
management, dev DOM/CSS/CDP tools, restart). Documents all 8 output
format options. Updates SKILL.md command table and count to 130+.
Bumps version to 1.2.0.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

plugins/obsidian-cli/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "obsidian-cli",
   "description": "Interact with Obsidian vaults using the official Obsidian CLI (v1.12+). Read, create, append, search, and manage notes, daily notes, properties, tags, tasks, bookmarks, templates, themes, sync, plugins, and links — all from the terminal.",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "author": {
     "name": "pablo-mano"
   },