# Message Privacy Storage v3.0 - Migration Notes

## Overview

The Message Privacy Storage System v3.0 has been successfully implemented with intelligent routing while maintaining complete API compatibility.

## What Changed

### Architecture Enhancement
- **From**: Single global inbox (`data/messages/inbox/inbox.json`)
- **To**: Intelligent routing based on recipient:
  - **Global messages** (`to: "all"`) → `data/messages/inbox/inbox.json`
  - **Project messages** (`to: "project-team:X"`) → `data/messages/projects/X/inbox.json`
  - **Instance messages** (`to: "claude-pm-phoenix-return"`) → `data/messages/instances/claude-pm-phoenix-return/inbox.json`

### Message Handler Upgrade
- **Old**: `handlers/messages.js` - Single storage location
- **New**: `handlers/messages-v3.js` - Intelligent routing with privacy isolation

## API Compatibility

### ✅ NO BREAKING CHANGES
All existing message functions work identically:
- `send_message(params)` - Same parameters, smarter storage
- `get_messages(params)` - Same parameters, searches multiple locations
- `get_message(params)` - Same parameters, searches all storage
- `mark_message_read(params)` - Works across all storage locations
- `archive_message(params)` - Maintains routing-aware archiving
- `get_archived_messages(params)` - Searches all archive locations
- `get_message_stats(params)` - Aggregates across all storage
- `delete_message(params)` - Works across all storage locations

## New Features

### 🔒 Instance Privacy
- Each instance gets private directory: `data/messages/instances/{instanceId}/`
- Phoenix can't see Genevieve's private messages
- Instances still see global messages (`to: "all"`)

### 🏗️ Project Isolation
- Project messages stay within team: `data/messages/projects/{projectId}/`
- Clean separation between project-specific communications
- Global announcements still reach all projects

### 🏃‍♂️ Bootstrap Integration
- Bootstrap automatically creates instance directories
- No manual setup required for new instances
- Seamless onboarding experience

## Implementation Details

### File Structure
```
data/messages/
├── inbox/                     # Global messages (to: "all")
│   ├── inbox.json
│   └── archive/
├── projects/                  # Project-specific messages
│   ├── collections-rescue/
│   │   ├── inbox.json
│   │   └── archive/
│   └── protocol-integration/
│       ├── inbox.json
│       └── archive/
└── instances/                 # Instance-private messages
    ├── claude-pm-phoenix-return/
    │   ├── inbox.json
    │   └── archive/
    └── claude-coo-genevieve/
        ├── inbox.json
        └── archive/
```

### Schema Version
- All new storage files use `schema_version: "3.0"`
- Existing files remain compatible
- Routing metadata added to message objects

### Logging Compliance
- **Zero console.log violations** - All logging uses `logger.js` system
- **JSON-RPC safe** - Server startup produces clean output
- **MCP compatible** - No protocol stream pollution

## Testing Results

### ✅ Routing Validation
- Global messages → Global inbox ✅
- Project messages → Project-specific inbox ✅
- Instance messages → Instance-private inbox ✅

### ✅ Privacy Validation
- Instance isolation working ✅
- Project segregation working ✅
- Global visibility preserved ✅

### ✅ API Compatibility
- All existing functions unchanged ✅
- Phoenix/Genevieve can use identical calls ✅
- Backwards compatibility maintained ✅

### ✅ Server Integration
- MCP server startup clean ✅
- Bootstrap creates directories automatically ✅
- Full stack integration working ✅

## Migration Strategy

### Existing Messages
- All existing messages remain in global inbox
- New messages route intelligently based on recipient
- No data loss or disruption

### Instance Onboarding
- New instances get private directories via bootstrap
- Existing instances work immediately (global messages)
- Private messaging available as soon as directory exists

### Project Setup
- Project directories created automatically when first message sent
- No manual configuration required
- Immediate project isolation

## Future Extensibility

Each instance directory can later hold:
- `notes/` - Instance-specific documents managed by MCP
- `docs/` - Shared knowledge managed centrally  
- `state/` - Instance state preservation
- `config/` - Instance-specific configuration

## Success Metrics

- **Silent Upgrade**: Users experience privacy without API changes ✅
- **Zero Downtime**: No service interruption ✅
- **JSON-RPC Safe**: No protocol violations ✅
- **Privacy Achieved**: Instance message isolation ✅
- **Project Isolation**: Team communication segregation ✅

## Technical Implementation

### Core Files Modified
- `src/server.js` - Updated to use `messages-v3.js`
- `src/bootstrap.js` - Added instance directory creation
- `src/handlers/messages-v3.js` - New intelligent routing handler

### Safety Measures Applied
- Read PROJECT_NOTES.md before implementation ✅
- Used logger.js instead of console.* calls ✅
- Tested server startup before deployment ✅
- Preserved existing API exactly ✅
- No breaking changes introduced ✅

---

**Implementation Complete**: The Message Privacy Storage System v3.0 is now operational and ready for production use by Phoenix, Genevieve, and all future AI instances!

*Author: claude-code-MessagePrivacyStorageSpecialist-2025-08-25-1200*
*Date: 2025-08-25*
*Status: COMPLETE*