DSH automatic memory plug-in

Key features

• Centralized storage (WorkBuddy-style): all workspace memories live under one root — /.dsh/memory/workspaces/, one subdirectory per workspace (readable by any model in any session via injection + cross-workspace memory_recall).
• Every finished conversation turn is automatically evaluated (via a small subagent) and anything worth keeping is written for you — no reliance on the model remembering to log
• The first thing you see when opening the memory panel is an AI-generated period greeting, not a template and not technical info
• The Search tab adds a Smart search button next to the keyword search
• Legacy per-workspace .dsh-memory/ folders are auto-migrated on first run after upgrade (the old copies are kept, not deleted).