Rename update_dms to update-memory and document command streamlining

## Command Updates
- Renamed `/update_dms` → `/update-memory` for kebab-case consistency
- Updated all references across documentation, installation scripts, and agents

## Files Updated
- `.claude/commands/update_dms.md` → `.claude/commands/update-memory.md`
- Updated 8 files with command name references
- Updated both English and Chinese README files
- Updated installation scripts and agent documentation

## Documentation Enhancement
- Added comprehensive command streamlining section to CHANGELOG.md
- Documented removal of 4 redundant commands (context.md, sync.md)
- Documented cleanup of 10 legacy documentation files
- Highlighted 60% reduction in maintenance overhead

## Consistency Improvements
- Standardized command naming convention across entire system
- Enhanced session management documentation
- Improved error handling documentation for session registry

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

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

README.md

@@ -84,7 +84,7 @@ Invoke-Expression (Invoke-WebRequest -Uri "https://raw.githubusercontent.com/cat
 | `/gemini-chat` | `/gemini-chat <inquiry> [--all-files] [--compress]` | Interactive dialogue with Gemini CLI using smart templates |
 | `/gemini-execute` | `/gemini-execute <task-id\|description> [--yolo] [--debug]` | Intelligent executor with automatic file context inference |
 | `/gemini-mode` | `/gemini-mode <analysis-type> <target> [options]` | Template-driven codebase analysis (pattern, architecture, security) |
-| `/update_dms` | `/update_dms [full\|fast\|deep] [path]` | Distributed Memory System management with hierarchical CLAUDE.md |
+| `/update-memory` | `/update-memory [full\|fast\|deep] [path]` | Distributed Memory System management with hierarchical CLAUDE.md |
 
 ### Workflow Management