chore: Fix all lint errors and remove unused code

- Fix 75 ESLint errors by updating eslint.config.mjs:
  - Add missing browser globals (MouseEvent, AbortController, Response, etc.)
  - Add Vite define global (__APP_VERSION__)
  - Configure @ts-nocheck to require descriptions
  - Add no-unused-vars rule for .mjs scripts

- Fix runtime bug in agent-output-modal.tsx (setOutput -> setStreamedContent)

- Remove ~120 unused variable warnings across 97 files:
  - Remove unused imports (React hooks, lucide icons, types)
  - Remove unused constants and variables
  - Remove unused function definitions
  - Prefix intentionally unused parameters with underscore

- Add descriptions to all @ts-nocheck comments (25 files)

- Clean up misc issues:
  - Remove invalid deprecation plugin comments
  - Fix eslint-disable comment placement
  - Add missing RefreshCw import in code-view.tsx

Reduces lint warnings from ~300 to 67 (all remaining are no-explicit-any)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/ui/src/components/views/board-view/dialogs/mass-edit-dialog.tsx

@@ -11,7 +11,6 @@ import { Button } from '@/components/ui/button';
 import { Checkbox } from '@/components/ui/checkbox';
 import { Label } from '@/components/ui/label';
 import { AlertCircle } from 'lucide-react';
-import { modelSupportsThinking } from '@/lib/utils';
 import { Feature, ModelAlias, ThinkingLevel, PlanningMode } from '@/store/app-store';
 import {
   TestingTabContent,
@@ -22,7 +21,7 @@ import {
 } from '../shared';
 import type { WorkMode } from '../shared';
 import { PhaseModelSelector } from '@/components/views/settings-view/model-defaults/phase-model-selector';
-import { isCursorModel, type PhaseModelEntry } from '@automaker/types';
+import type { PhaseModelEntry } from '@automaker/types';
 import { cn } from '@/lib/utils';
 
 interface MassEditDialogProps {
@@ -240,8 +239,6 @@ export function MassEditDialog({
   };
 
   const hasAnyApply = Object.values(applyState).some(Boolean);
-  const isCurrentModelCursor = isCursorModel(model);
-  const modelAllowsThinking = !isCurrentModelCursor && modelSupportsThinking(model);
 
   return (
     <Dialog open={open} onOpenChange={(open) => !open && onClose()}>