feat(ui): implement refreshed UX for Composer layout

- Promotes refreshed multi-row status area and footer as the default experience.
- Stabilizes Composer row heights to prevent layout 'jitter' during typing and model turns.
- Unifies active hook status and model loading indicators into a single, stable Row 1.
- Refactors settings to use backward-compatible 'Hide' booleans (ui.hideStatusTips, ui.hideStatusWit).
- Removes vestigial context usage bleed-through logic in minimal mode to align with global UX direction.
- Relocates toast notifications to the top status row for improved visibility.
- Updates all CLI UI snapshots and architectural tests to reflect the stabilized layout.

packages/core/src/config/config.ts

@@ -164,7 +164,7 @@ import { ConsecaSafetyChecker } from '../safety/conseca/conseca.js';
 import type { AgentLoopContext } from './agent-loop-context.js';
 
 export interface AccessibilitySettings {
-  /** @deprecated Use ui.loadingPhrases instead. */
+  /** @deprecated Use ui.statusHints instead. */
   enableLoadingPhrases?: boolean;
   screenReader?: boolean;
 }

packages/core/src/hooks/hookEventHandler.ts

@@ -303,6 +303,7 @@ export class HookEventHandler {
         coreEvents.emitHookStart({
           hookName: this.getHookName(config),
           eventName,
+          source: config.source,
           hookIndex: index + 1,
           totalHooks: plan.hookConfigs.length,
         });

packages/core/src/utils/events.ts

@@ -88,9 +88,12 @@ export interface HookPayload {
  * Payload for the 'hook-start' event.
  */
 export interface HookStartPayload extends HookPayload {
+  /**
+   * The source of the hook configuration.
+   */
+  source?: string;
   /**
    * The 1-based index of the current hook in the execution sequence.
-   * Used for progress indication (e.g. "Hook 1/3").
    */
   hookIndex?: number;
   /**