The 4 gateway *.request events now drive a blocking-prompt overlay instead of
deadlocking the agent (spec §8 #6). Native OpenTUI paradigm (per glitch's steer):
- view/prompts/approvalPrompt.tsx: native <select> (once/session/always/deny)
→ approval.respond {choice, session_id}.
- view/prompts/clarifyPrompt.tsx: native <select> over choices + an "✎ Other…"
option that swaps to a native <input> for free-text → clarify.respond
{answer, request_id}.
- view/prompts/maskedPrompt.tsx: sudo (🔐) / secret (🔑) — native <input> has no
mask, so we own a buffer via useKeyboard and render '*' per char →
sudo/secret.respond {password|value, request_id}.
- view/prompts/promptOverlay.tsx: dispatches by prompt kind, binds each
answer/cancel to the matching *.respond; Esc/Ctrl+C → deny/empty so the agent
always unblocks.
Wiring: store gains ActivePrompt state + the 4 reducer cases + clearPrompt;
App swaps Composer↔PromptOverlay on store.state.prompt (so the composer textarea
stops capturing keys while blocked); renderer.ts gates the global Ctrl+C-quit on
isBlocked() so a prompt owns Ctrl+C (→ cancel); entry adds a generic `respond`
runFork callback + passes sessionId.
Verified: bun run check green (28 tests / 5 files) — reducer set/clear for all 4,
+ a frame test (approval overlay renders the command + all options as a bordered
modal, composer hidden while blocked). LIVE tmux: a real `rm -rf` approval fired;
Approve-once → command ran → unblocked; Esc → deny → "BLOCKED by user" →
unblocked; Ctrl+C-while-blocked cancelled WITHOUT quitting; Ctrl+C-unblocked quit
clean, no orphan. Smoke P3 + parity matrix updated. confirm (local) → Phase 4.
