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>

plugins/learn/templates/domain-memory.md

@@ -0,0 +1,28 @@
+---
+paths: {DOMAIN_PATTERNS}
+---
+
+# Claude Learn Memory: {DOMAIN_NAME}
+
+Patterns și Gotchas pentru domeniul **{DOMAIN_NAME}**.
+
+---
+
+## Patterns
+
+<!-- Patterns vor fi adăugate aici -->
+
+---
+
+## Gotchas
+
+<!-- Gotchas vor fi adăugate aici -->
+
+---
+
+## Domain Statistics
+
+- **Total Patterns**: 0
+- **Total Gotchas**: 0
+- **Last Session**: -
+- **Sessions Recorded**: 0