feat: v1.3.1 - Multi-transport + Production deployment

- Add HTTP transport (StreamableHTTPServerTransport)
- Add shared server module (src/server/)
- Configure production for hub.descomplicar.pt
- Add SSH tunnel script (start-tunnel.sh)
- Fix connection leak in pg-client.ts
- Fix atomicity bug in comments deletion
- Update docs with test plan for 164 tools

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

CHANGELOG.md

@@ -2,6 +2,84 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.3.1] - 2026-01-31
+
+### Added
+
+- **Production Deployment:** Configured for hub.descomplicar.pt (EasyPanel)
+  - SSH tunnel script `start-tunnel.sh` for secure PostgreSQL access
+  - Tunnel connects via `172.18.0.46:5432` (Docker bridge network)
+  - Local port 5433 for production, 5432 reserved for local dev
+
+- **Credentials Backup:** `CREDENTIALS-BACKUP.md` with all connection details
+  - Production credentials (EasyPanel PostgreSQL)
+  - Local development credentials
+  - Old API-based MCP configuration (for rollback if needed)
+
+### Changed
+
+- **Claude Code Configuration:** Updated `~/.claude.json`
+  - Removed old `outline` MCP (API-based, 4 tools)
+  - Updated `outline-postgresql` to use production database
+  - Now connects to hub.descomplicar.pt with 164 tools
+
+### Deployment
+
+| Environment | Database | Port | Tunnel Required |
+|-------------|----------|------|-----------------|
+| Production | descomplicar | 5433 | Yes (SSH) |
+| Development | outline | 5432 | No (local Docker) |
+
+### Usage
+
+```bash
+# Start tunnel before Claude Code
+./start-tunnel.sh start
+
+# Check status
+./start-tunnel.sh status
+
+# Stop tunnel
+./start-tunnel.sh stop
+```
+
+## [1.3.0] - 2026-01-31
+
+### Added
+
+- **Multi-Transport Support:** Added HTTP transport alongside existing stdio
+  - `src/index-http.ts`: New entry point for HTTP/StreamableHTTP transport
+  - `src/server/`: New module with shared server logic
+    - `create-server.ts`: Factory function for MCP server instances
+    - `register-handlers.ts`: Shared handler registration
+  - Endpoints: `/mcp` (MCP protocol), `/health` (status), `/stats` (tool counts)
+  - Supports both stateful (session-based) and stateless modes
+
+- **New npm Scripts:**
+  - `start:http`: Run HTTP server (`node dist/index-http.js`)
+  - `dev:http`: Development mode for HTTP server
+
+### Changed
+
+- **Refactored `src/index.ts`:** Now uses shared server module for cleaner code
+- **Server Version:** Updated to 1.3.0 across all transports
+
+### Technical
+
+- Uses `StreamableHTTPServerTransport` from MCP SDK (recommended over deprecated SSEServerTransport)
+- HTTP server listens on `127.0.0.1:3200` by default (configurable via `MCP_HTTP_PORT` and `MCP_HTTP_HOST`)
+- CORS enabled for local development
+- Graceful shutdown on SIGINT/SIGTERM
+
+## [1.2.5] - 2026-01-31
+
+### Fixed
+
+- **Connection Leak (PgClient):** Fixed connection leak in `testConnection()` method
+  - `pg-client.ts`: Client is now always released using `finally` block
+  - Previously, if `SELECT 1` query failed after connection was acquired, the connection was never released
+  - Prevents connection pool exhaustion during repeated connection test failures
+
 ## [1.2.4] - 2026-01-31
 
 ### Security
@@ -18,10 +96,24 @@ All notable changes to this project will be documented in this file.
 
 ### Fixed
 
+- **Data Integrity (Comments):** Fixed critical atomicity bug in comment deletion
+  - `comments.ts`: DELETE operations now wrapped in transaction
+  - Prevents orphaned replies if parent comment deletion fails
+  - Uses `withTransactionNoRetry()` to ensure all-or-nothing deletion
+
+- **Error Handling (PgClient):** Added try-catch to ROLLBACK operation
+  - `pg-client.ts`: ROLLBACK failures now logged instead of crashing
+  - Prevents unhandled errors during transaction rollback
+  - Original error is still thrown after logging rollback failure
+
 - **Memory Leak (Pool Monitoring):** Added `.unref()` to `setInterval` in `PoolMonitor`
   - `monitoring.ts`: Pool monitoring interval now allows process to exit gracefully
   - Prevents memory leak and hanging processes on shutdown
 
+- **Version Mismatch:** Updated hardcoded server version to match package.json
+  - `index.ts`: Server version now correctly reports '1.2.4'
+  - Ensures consistency across all version references
+
 ## [1.2.3] - 2026-01-31
 
 ### Security