feat(research): Add bidirectional web TUI streaming with keyboard input

Add WebSocket-based streaming to enable browser control of research TUI:

- Add web_terminal.rs: WebSocket server with keyboard event handling
  - WebKeyEvent struct with crossterm KeyEvent conversion
  - Broadcast channels for multi-viewer output streaming
  - 100-frame history buffer for late-joining viewers

- Add web_tui_backend.rs: Dual ratatui backend
  - DualBackend writes to both CrosstermBackend and WebTuiBackend
  - Proper ANSI escape code generation for xterm.js
  - Full Backend trait implementation for ratatui 0.29

- Update TUI app with web input support:
  - run_with_web() method for dual output + web input
  - event_loop_with_web_input() polls both crossterm and WebSocket
  - handle_key_event() unified handler for local and remote keys

- Add --web flag to research command:
  - Streams TUI output to http://localhost:13370
  - Browser keyboard input controls the TUI
  - Works with --tui for interactive mode

Also includes OVSM compiler improvements and AI service enhancements.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: 0xrinegade

Cargo.lock

@@ -51,6 +51,7 @@ cursive-multiplex = "0.7.0"
 anyhow = "1.0.99"
 fs2 = "0.4"  # File locking to prevent session recording race conditions
 async-trait = "0.1.83"
+async-stream = "0.3"
 futures = "0.3.31"
 rand = "0.9.2"
 colored = "3.0.0"
@@ -134,6 +135,7 @@ proptest = "1.5.0"
 default = []
 remote-wallet = ["solana-remote-wallet"]
 incomplete_tests = []  # Feature flag for incomplete/experimental test files
+mdns = []  # Optional mDNS peer discovery for BBS federation
 
 [[bin]]
 name = "osvm-bootstrap"