* fix(server): resolve terminal WebSocket proxy conflict and implement server-side transport
- Disables proxy websocket handling conflict in server proxy config to fix 1006 abnormal closes.
- Implements server-side WebSocket upgrade and connection handling for terminal input.
- Adds server-side debug instrumentation for WS lifecycle events.
- Includes terminal input WS protocol definition and unit tests.
* feat(ui): implement hardened terminal WebSocket transport with idempotency and diagnostics
- Adds client-side WebSocket transport manager with automatic reconnection and jitter.
- Implements idempotency and debug instrumentation for terminal input WS.
- Adds HMR dispose cleanup for terminal WS transport manager.
- Primes terminal input transport when terminal view becomes active.
- Updates terminal session types to include input capabilities.
* refactor(terminal): remove temporary websocket debug instrumentation
shekohex