feat: v2.0.0 - Domain-based memory + multi-plugin marketplace structure

## Domain-based Memory (v2.0.0)
- Memory split into domains (backend, frontend, database, testing, deployment, global)
- Selective loading via `paths` frontmatter - only relevant memories load
- Automatic domain detection from file paths in conversation
- Auto-generated glob patterns when creating new domains
- Cross-domain analysis in /learn:reflect

## Repository Reorganization
- Restructured for multi-plugin marketplace: plugin/ → plugins/learn/
- Marketplace renamed: romfast-tools → romfast-plugins
- Repository to be renamed on Gitea: claude-learn → claude-plugins

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude-plugin/marketplace.json

@@ -1,18 +1,18 @@
 {
-  "name": "romfast-tools",
+  "name": "romfast-plugins",
   "owner": {
     "name": "Romfast Team"
   },
   "metadata": {
-    "description": "Claude Code plugins for learning and memory"
+    "description": "Claude Code plugins by Romfast Team"
   },
   "plugins": [
     {
       "name": "learn",
-      "source": "./plugin",
-      "description": "Lessons Learned: Automatic pattern and gotcha detection with CLAUDE.md updates",
-      "version": "1.0.0",
-      "keywords": ["learn", "memory", "patterns", "gotchas", "documentation"]
+      "source": "./plugins/learn",
+      "description": "Domain-based memory with selective loading via paths frontmatter",
+      "version": "2.0.0",
+      "keywords": ["learn", "memory", "patterns", "gotchas", "domains"]
     }
   ]
 }