fix: stop fallback strips blocking system back

code/th_15_extra.js

@@ -1049,7 +1049,9 @@ FloatBallAppWM.prototype.showToolApp = function(route, resetStack) {
       } catch (eUpd) { safeLog(this.L, 'w', "tool_app update layout fail: " + String(eUpd)); }
       try { shell.requestFocus(); } catch (eFocus) {}
     }
-    try { this.showToolAppScreenBackStrips(); } catch (eScreenBack) { safeLog(this.L, 'w', "show screen edge back fail: " + String(eScreenBack)); }
+    // 不再添加全屏左右边缘返回热区：它会抢占系统全面屏返回手势，导致系统返回无效。
+    // ToolApp 自身边界内仍保留子 View fallback；屏幕最边缘交还给系统 OnBackAnimationCallback。
+    try { this.hideToolAppScreenBackStrips(); } catch (eScreenBack) { safeLog(this.L, 'w', "hide screen edge back fail: " + String(eScreenBack)); }
   } catch (e) {
     this.state.toolAppActive = false;
     safeLog(this.L, 'e', "showToolApp fail route=" + r + " err=" + String(e));

manifest.json

@@ -58,8 +58,8 @@
       "size": 244271
     },
     "th_15_extra.js": {
-      "sha256": "5db4df3da3920996fdbd078f5c463022770be77b2fca2817f72ffe98b88ad5f8",
-      "size": 90535
+      "sha256": "203e65c53d1cd37135af22584b90a89d43ec5f2a7ce1aada18a5d90a49b417d9",
+      "size": 90774
     },
     "th_16_entry.js": {
       "sha256": "e7c99c3dfbd6aedab05551426955081ae6cae034754f2f557cefa01dc75dc001",
@@ -68,5 +68,5 @@
   },
   "keyId": "toolhub-targets-2026-rsa3072",
   "schema": 2,
-  "version": 20260514102303
+  "version": 20260514102839
 }

manifest.sig

@@ -1 +1 @@
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