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/turnStore.ts

@@ -4,6 +4,7 @@ import type { ActiveTool, ActivityItem, SubagentProgress } from '../types.js'
 
 const buildTurnState = (): TurnState => ({
   activity: [],
+  outcome: '',
   reasoning: '',
   reasoningActive: false,
   reasoningStreaming: false,
@@ -26,6 +27,7 @@ export const resetTurnState = () => $turnState.set(buildTurnState())
 
 export interface TurnState {
   activity: ActivityItem[]
+  outcome: string
   reasoning: string
   reasoningActive: boolean
   reasoningStreaming: boolean