refactor: split th_2_core.js into 12 modules, rename all files to 2-digit numbering

- Split th_2_core.js (4715 lines, 177KB) into:
  th_02_core.js, th_03_icon.js, th_04_theme.js, th_05_persistence.js,
  th_06_icon_parser.js, th_07_shortcut.js, th_08_content.js,
  th_09_animation.js, th_10_shell.js, th_11_action.js,
  th_12_rebuild.js, th_13_panel_ui.js
- Rename existing: th_1_base→th_01_base, th_3_panels→th_14_panels,
  th_4_extra→th_15_extra, th_5_entry→th_16_entry
- Update ToolHub.js MODULE_MANIFEST, modules array, and critical module check

code/th_02_core.js

@@ -0,0 +1,123 @@
+// @version 1.0.0
+function FloatBallAppWM(logger) {
+  this.L = logger || null;
+
+  // # 加载配置
+  this.config = ConfigManager.loadSettings();
+  this.currentPanelKey = "main";
+  this.panels = { main: ConfigManager.loadButtons() };
+
+  // # 更新 Logger 配置（因为 Logger 初始化时是默认值）
+  if (this.L) this.L.updateConfig(this.config);
+
+  this.state = {
+    receivers: [], // 存储广播接收器引用，用于 close 时注销
+    wm: null,
+    dm: null,
+    density: 1.0,
+
+    screen: { w: 0, h: 0 },
+    lastRotation: -1,
+    lastMonitorTs: 0,
+
+    ht: null,
+    h: null,
+
+    addedBall: false,
+    addedPanel: false,
+    addedSettings: false,
+    addedViewer: false,
+    addedMask: false,
+
+    ballRoot: null,
+    ballContent: null,
+    ballLp: null,
+
+    panel: null,
+    panelLp: null,
+
+    settingsPanel: null,
+    settingsPanelLp: null,
+
+    viewerPanel: null,
+    viewerPanelLp: null,
+
+    mask: null,
+    maskLp: null,
+
+    loadedPos: null,
+    lastSaveTs: 0,
+
+    dragging: false,
+    rawX: 0,
+    rawY: 0,
+    downX: 0,
+    downY: 0,
+
+    docked: false,
+    dockSide: null,
+
+    lastMotionTs: 0,
+    idleDockRunnable: null,
+
+    longPressArmed: false,
+    longPressTriggered: false,
+    longPressRunnable: null,
+
+    displayListener: null,
+
+    // # 设置面板：临时编辑缓存
+    pendingUserCfg: null,
+    pendingDirty: false,
+
+    closing: false
+  };
+
+  // # 创建实例独立的 UI 工具对象，避免多实例共享颜色状态
+  this.ui = {};
+  var protoUi = FloatBallAppWM.prototype.ui;
+  for (var _uiKey in protoUi) {
+    this.ui[_uiKey] = protoUi[_uiKey];
+  }
+  this.ui.colors = {};
+
+  // # 初始化莫奈动态配色（传入当前主题避免重复检测）
+  try { this.refreshMonetColors(this.isDarkTheme()); } catch (eM) {}
+}
+
+// =======================【工具：dp/now/clamp】======================
+FloatBallAppWM.prototype.dp = function(v) { return Math.floor(Number(v) * this.state.density); };
+FloatBallAppWM.prototype.sp = function(v) { try { return Math.floor(Number(v) * context.getResources().getDisplayMetrics().scaledDensity); } catch (e) { return Math.floor(Number(v) * this.state.density); } };
+FloatBallAppWM.prototype.now = function() { return new Date().getTime(); };
+FloatBallAppWM.prototype.clamp = function(v, min, max) { if (v < min) return min; if (v > max) return max; return v; };
+FloatBallAppWM.prototype.rectIntersect = function(ax, ay, aw, ah, bx, by, bw, bh) {
+  return !(ax + aw <= bx || bx + bw <= ax || ay + ah <= by || by + bh <= ay);
+};
+
+// # 这段代码的主要内容/用途：安全地在 UI 线程执行代码（用于后台线程回调更新 UI）
+FloatBallAppWM.prototype.runOnUiThreadSafe = function(fn) {
+  try {
+    if (!fn) return;
+    var self = this;
+    // 优先使用 Activity 的 runOnUiThread，否则使用 View.post
+    if (this.state && this.state.ballRoot) {
+      this.state.ballRoot.post(new java.lang.Runnable({
+        run: function() { try { fn.call(self); } catch(e) {} }
+      }));
+    } else {
+      // 兜底：直接执行（如果已经在 UI 线程）或尝试使用 Handler
+      try {
+        var h = new android.os.Handler(android.os.Looper.getMainLooper());
+        h.post(new java.lang.Runnable({
+          run: function() { try { fn.call(self); } catch(e) {} }
+        }));
+      } catch(e) {
+        // 最后兜底：直接执行
+        try { fn.call(self); } catch(e2) {}
+      }
+    }
+  } catch(e) {}
+};
+
+// # 这段代码的主要内容/用途：统一图标缓存（LRU），减少反复解码/反复走 PackageManager，降低卡顿与内存波动（不改变 UI 与功能）
+// 优化后的图标缓存（带 Bitmap 回收，防止内存泄漏）