refactor(store): Extract default values into store/defaults/

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

apps/ui/src/store/defaults/background-settings.ts

@@ -0,0 +1,13 @@
+import type { BackgroundSettings } from '../types/ui-types';
+
+// Default background settings for board backgrounds
+export const defaultBackgroundSettings: BackgroundSettings = {
+  imagePath: null,
+  cardOpacity: 100,
+  columnOpacity: 100,
+  columnBorderEnabled: true,
+  cardGlassmorphism: true,
+  cardBorderEnabled: true,
+  cardBorderOpacity: 100,
+  hideScrollbar: false,
+};

apps/ui/src/store/defaults/constants.ts

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+// Maximum number of output lines to keep in init script state (prevents unbounded memory growth)
+export const MAX_INIT_OUTPUT_LINES = 500;

apps/ui/src/store/defaults/index.ts

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+export { defaultBackgroundSettings } from './background-settings';
+export { defaultTerminalState } from './terminal-defaults';
+export { MAX_INIT_OUTPUT_LINES } from './constants';

apps/ui/src/store/defaults/terminal-defaults.ts

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+import { DEFAULT_FONT_VALUE } from '@/config/ui-font-options';
+import type { TerminalState } from '../types/terminal-types';
+
+// Default terminal state values
+export const defaultTerminalState: TerminalState = {
+  isUnlocked: false,
+  authToken: null,
+  tabs: [],
+  activeTabId: null,
+  activeSessionId: null,
+  maximizedSessionId: null,
+  defaultFontSize: 14,
+  defaultRunScript: '',
+  screenReaderMode: false,
+  fontFamily: DEFAULT_FONT_VALUE,
+  scrollbackLines: 5000,
+  lineHeight: 1.0,
+  maxSessions: 100,
+  lastActiveProjectPath: null,
+  openTerminalMode: 'newTab',
+};