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+# GuruConnect Session Log - 2025-12-29
+
+## Session Summary
+
+### What Was Accomplished
+1. **Cleaned up stale persistent sessions** - Deleted 12 offline machines from PostgreSQL database
+2. **Added machine deletion API with uninstall support** - Implemented full machine management endpoints
+3. **Added AdminCommand protobuf message** - For server-to-agent commands (uninstall, restart, update)
+4. **Implemented machine history export** - Sessions and events can be exported before deletion
+
+### Key Decisions
+- Machine deletion has two modes:
+  - **Delete Only** (`DELETE /api/machines/:agent_id`) - Removes from DB, allows re-registration
+  - **Delete with Uninstall** (`DELETE /api/machines/:agent_id?uninstall=true`) - Sends uninstall command to agent if online
+- History export available via `?export=true` query param or separate endpoint
+- AdminCommand message types: ADMIN_UNINSTALL, ADMIN_RESTART, ADMIN_UPDATE
+
+### Problems Encountered
+- Server endpoint returning 404 - new binary may not have been properly deployed
+- Cross-compilation issues with ring crate for Windows MSVC on Linux
+
+---
+
+## Credentials
+
+### GuruConnect Database (PostgreSQL)
+- **Host:** 172.16.3.30 (localhost from server)
+- **Database:** guruconnect
+- **User:** guruconnect
+- **Password:** gc_a7f82d1e4b9c3f60
+- **DATABASE_URL:** `postgres://guruconnect:gc_a7f82d1e4b9c3f60@localhost:5432/guruconnect`
+
+### Build Server SSH
+- **Host:** 172.16.3.30
+- **User:** guru
+- **Password:** Gptf*77ttb123!@#-rmm
+- **Sudo Password:** Gptf*77ttb123!@#-rmm
+
+---
+
+## Infrastructure
+
+### GuruConnect Server
+- **Host:** 172.16.3.30
+- **Port:** 3002
+- **Binary:** `/home/guru/guru-connect/target/release/guruconnect-server`
+- **Service:** guruconnect.service (systemd)
+- **Log:** ~/gc-server.log
+
+### API Endpoints (NEW)
+```
+GET  /api/machines                    - List all persistent machines
+GET  /api/machines/:agent_id          - Get machine info
+GET  /api/machines/:agent_id/history  - Get full session/event history
+DELETE /api/machines/:agent_id        - Delete machine
+  Query params:
+    ?uninstall=true  - Send uninstall command to agent
+    ?export=true     - Include history in response
+```
+
+---
+
+## Files Modified
+
+### Protobuf Schema
+- `proto/guruconnect.proto` - Added AdminCommand message and AdminCommandType enum
+
+### Server Changes
+- `server/src/main.rs` - Added machine API routes and handlers
+- `server/src/api/mod.rs` - Added MachineInfo, MachineHistory, DeleteMachineParams types
+- `server/src/db/machines.rs` - Existing delete_machine function used
+- `server/src/db/sessions.rs` - Added get_sessions_for_machine()
+- `server/src/db/events.rs` - Added get_events_for_machine()
+- `server/src/session/mod.rs` - Added send_admin_command() and remove_agent() methods
+
+### Agent Changes
+- `agent/src/session/mod.rs` - Added AdminCommand message handler
+- `agent/src/main.rs` - Added ADMIN_UNINSTALL and ADMIN_RESTART error handlers
+
+---
+
+## Important Commands
+
+### Query/Delete Machines from PostgreSQL
+```bash
+# Query all machines
+ssh guru@172.16.3.30 'PGPASSWORD=gc_a7f82d1e4b9c3f60 psql -h localhost -U guruconnect -d guruconnect -c "SELECT agent_id, hostname, status FROM connect_machines;"'
+
+# Delete all offline machines
+ssh guru@172.16.3.30 'PGPASSWORD=gc_a7f82d1e4b9c3f60 psql -h localhost -U guruconnect -d guruconnect -c "DELETE FROM connect_machines WHERE status = '\''offline'\'';"'
+```
+
+### Build Server
+```bash
+# Build for Linux
+ssh guru@172.16.3.30 'cd ~/guru-connect && source ~/.cargo/env && cargo build -p guruconnect-server --release --target x86_64-unknown-linux-gnu'
+
+# Restart server
+ssh guru@172.16.3.30 'pkill -f guruconnect-server; cd ~/guru-connect/server && DATABASE_URL="postgres://guruconnect:gc_a7f82d1e4b9c3f60@localhost:5432/guruconnect" nohup ~/guru-connect/target/release/guruconnect-server > ~/gc-server.log 2>&1 &'
+```
+
+---
+
+## Pending Tasks
+
+1. **Debug 404 on /api/machines endpoint** - The new routes aren't being recognized
+   - May need to verify the correct binary is being executed
+   - Check if old process is still running on port 3002
+
+2. **Test machine deletion flow end-to-end**
+   - Connect an agent
+   - Delete with uninstall flag
+   - Verify agent receives command and uninstalls
+
+3. **Build Windows agent binary** - Cross-compilation needs MSVC tools or use Windows build
+
+---
+
+## Git Status
+
+Committed and pushed:
+```
+commit dc7b742: Add machine deletion API with uninstall command support
+- 8 files changed, 380 insertions(+), 6 deletions(-)
+```
+
+---
+
+## Next Steps for Future Sessions
+
+1. Investigate why `/api/machines` returns 404 - likely old binary running
+2. Use systemd properly for server management (need root access)
+3. Build and test Windows agent with uninstall command handling
+4. Add dashboard UI for machine management (list, delete with options)