Add Console Development as highest priority - planned order, constraints, architecture, deferred items

OPEN_THREADS.md

@@ -6,6 +6,30 @@ This document tracks **known open questions and deferred decisions**.
 
 ## High Priority
 
+### Console Development (Next Phase)
+
+#### Planned Order
+1. Read-only console output
+2. Interactive input (PTY / stdin)
+3. Permissions & safety controls
+
+#### Known Constraints
+- Console state is ephemeral
+- No persistence of logs
+- No agent push yet (polling only)
+
+#### Architecture Direction
+- Agent owns PTY
+- API brokers WebSocket sessions
+- Portal renders terminal (xterm.js)
+
+#### Explicitly Deferred
+- Proxmox-based live status polling
+- Agent push model
+- Multi-viewer consoles
+
+---
+
 ### Server Detail / System View
 - Define System View layout
 - Decide runtime vs metadata sections