fix(tui): approval flow + input ergonomics + selection perf

- tui_gateway: route approvals through gateway callback (HERMES_GATEWAY_SESSION/
  HERMES_EXEC_ASK) so dangerous commands emit approval.request instead of
  silently falling through the CLI input() path and auto-denying
- approval UX: dedicated PromptZone between transcript and composer, safer
  defaults (sel=0, numeric quick-picks, no Esc=deny), activity trail line,
  outcome footer under the cost row
- text input: Ctrl+A select-all, real forward Delete, Ctrl+W always consumed
  (fixes Ctrl+Backspace at cursor 0 inserting literal w)
- hermes-ink selection: swap synchronous onRender() for throttled
  scheduleRender() on drag, and only notify React subscribers on presence
  change — no more per-cell paint/subscribe spam
- useConfigSync: silence config.get polling failures instead of surfacing
  'error: timeout: config.get' in the transcript

ui-tui/src/app/useInputHandlers.ts

@@ -11,6 +11,7 @@ import type {
 import type { InputHandlerContext, InputHandlerResult } from './interfaces.js'
 import { $isBlocked, $overlayState, patchOverlayState } from './overlayStore.js'
 import { turnController } from './turnController.js'
+import { patchTurnState } from './turnStore.js'
 import { getUiState, patchUiState } from './uiStore.js'
 
 const isCtrl = (key: { ctrl: boolean }, ch: string, target: string) => key.ctrl && ch.toLowerCase() === target
@@ -24,11 +25,17 @@ export function useInputHandlers(ctx: InputHandlerContext): InputHandlerResult {
   const pagerPageSize = Math.max(5, (terminal.stdout?.rows ?? 24) - 6)
 
   const copySelection = () => {
-    if (terminal.selection.copySelection()) {
-      actions.sys('copied selection')
+    const text = terminal.selection.copySelection()
+
+    if (text) {
+      actions.sys(`copied ${text.length} chars`)
     }
   }
 
+  const clearSelection = () => {
+    terminal.selection.clearSelection()
+  }
+
   const cancelOverlayFromCtrlC = () => {
     if (overlay.clarify) {
       return actions.answerClarify('')
@@ -37,7 +44,7 @@ export function useInputHandlers(ctx: InputHandlerContext): InputHandlerResult {
     if (overlay.approval) {
       return gateway
         .rpc<ApprovalRespondResponse>('approval.respond', { choice: 'deny', session_id: getUiState().sid })
-        .then(r => r && (patchOverlayState({ approval: null }), actions.sys('denied')))
+        .then(r => r && (patchOverlayState({ approval: null }), patchTurnState({ outcome: 'denied' })))
     }
 
     if (overlay.sudo) {
@@ -215,6 +222,10 @@ export function useInputHandlers(ctx: InputHandlerContext): InputHandlerResult {
       return copySelection()
     }
 
+    if (key.escape && terminal.hasSelection) {
+      return clearSelection()
+    }
+
     if (key.upArrow && !cState.inputBuf.length) {
       cycleQueue(1) || cycleHistory(-1)