refactor(board-view): reorganize into modular folder structure

- Extract board-view into organized subfolders following new pattern:
  - components/: kanban-card, kanban-column
  - dialogs/: all dialog and modal components (8 files)
  - hooks/: all board-specific hooks (10 files)
  - shared/: reusable components between dialogs (model-selector, etc.)
- Rename all files to kebab-case convention
- Add barrel exports (index.ts) for clean imports
- Add docs/folder-pattern.md documenting the folder structure
- Reduce board-view.tsx from ~3600 lines to ~490 lines

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

apps/app/src/components/views/board-view/hooks/use-board-keyboard-shortcuts.ts

@@ -0,0 +1,78 @@
+import { useMemo, useRef, useEffect } from "react";
+import {
+  useKeyboardShortcuts,
+  useKeyboardShortcutsConfig,
+  KeyboardShortcut,
+} from "@/hooks/use-keyboard-shortcuts";
+import { Feature } from "@/store/app-store";
+
+interface UseBoardKeyboardShortcutsProps {
+  features: Feature[];
+  runningAutoTasks: string[];
+  onAddFeature: () => void;
+  onStartNextFeatures: () => void;
+  onViewOutput: (feature: Feature) => void;
+}
+
+export function useBoardKeyboardShortcuts({
+  features,
+  runningAutoTasks,
+  onAddFeature,
+  onStartNextFeatures,
+  onViewOutput,
+}: UseBoardKeyboardShortcutsProps) {
+  const shortcuts = useKeyboardShortcutsConfig();
+
+  // Get in-progress features for keyboard shortcuts (memoized for shortcuts)
+  const inProgressFeaturesForShortcuts = useMemo(() => {
+    return features.filter((f) => {
+      const isRunning = runningAutoTasks.includes(f.id);
+      return isRunning || f.status === "in_progress";
+    });
+  }, [features, runningAutoTasks]);
+
+  // Ref to hold the start next callback (to avoid dependency issues)
+  const startNextFeaturesRef = useRef<() => void>(() => {});
+
+  // Update ref when callback changes
+  useEffect(() => {
+    startNextFeaturesRef.current = onStartNextFeatures;
+  }, [onStartNextFeatures]);
+
+  // Keyboard shortcuts for this view
+  const boardShortcuts: KeyboardShortcut[] = useMemo(() => {
+    const shortcutsList: KeyboardShortcut[] = [
+      {
+        key: shortcuts.addFeature,
+        action: onAddFeature,
+        description: "Add new feature",
+      },
+      {
+        key: shortcuts.startNext,
+        action: () => startNextFeaturesRef.current(),
+        description: "Start next features from backlog",
+      },
+    ];
+
+    // Add shortcuts for in-progress cards (1-9 and 0 for 10th)
+    inProgressFeaturesForShortcuts.slice(0, 10).forEach((feature, index) => {
+      // Keys 1-9 for first 9 cards, 0 for 10th card
+      const key = index === 9 ? "0" : String(index + 1);
+      shortcutsList.push({
+        key,
+        action: () => {
+          onViewOutput(feature);
+        },
+        description: `View output for in-progress card ${index + 1}`,
+      });
+    });
+
+    return shortcutsList;
+  }, [inProgressFeaturesForShortcuts, shortcuts, onAddFeature, onViewOutput]);
+
+  useKeyboardShortcuts(boardShortcuts);
+
+  return {
+    inProgressFeaturesForShortcuts,
+  };
+}