feat: add CW decoder and linear calculator page

feature/cw/src/main/java/B/RunnableC0001b.java

@@ -0,0 +1,63 @@
+package B;
+
+import android.text.SpannableStringBuilder;
+import com.ve3nea.morse_expert.DecodedTextView;
+import com.ve3nea.morse_expert.MainActivity;
+import H2.b;
+
+/**
+ * 照搬自 Morse Expert 1.15 B.RunnableC0001b, 类名保持混淆原名。
+ * R8 合并 Runnable 手术: 构造按 smali 真实签名 5 参 (Object,Object,int,int,boolean),
+ * 字段 = i(Object)/h(Object)/g(int)/f(int); run() 仅保留 case 4(f==2 对应 pswitch_4:
+ * 解码文本 UI 更新, H2.b 调用), 其余 case(权限/Intent/通知等库代码)已裁剪。
+ * 注: jadx 4 参构造为错误还原, 已按 smali 修正。
+ */
+public final class RunnableC0001b implements Runnable {
+    public final /* synthetic */ int f;
+
+    /* renamed from: g, reason: collision with root package name */
+    public final int g;
+
+    /* renamed from: h, reason: collision with root package name */
+    public final Object h;
+
+    /* renamed from: i, reason: collision with root package name */
+    public final Object i;
+
+    public /* synthetic */ RunnableC0001b(Object obj, Object obj2, int i4, int i5, boolean z) {
+        this.i = obj;
+        this.h = obj2;
+        this.g = i4;
+        this.f = i5;
+    }
+
+    @Override // java.lang.Runnable
+    public final void run() {
+        if (this.f == 2) {
+            MainActivity mainActivity = ((b) this.i).f620p;
+            if (mainActivity != null) {
+                SpannableStringBuilder spannableStringBuilder = (SpannableStringBuilder) this.h;
+                int i5 = this.g;
+                DecodedTextView decodedTextView = (DecodedTextView) mainActivity.f11035D.f11888g;
+                if (!decodedTextView.f11032n && !decodedTextView.f11033o.get()) {
+                    decodedTextView.beginBatchEdit();
+                    try {
+                        int length2 = decodedTextView.length();
+                        int min = Math.min(length2, i5);
+                        if (min > 0) {
+                            decodedTextView.getEditableText().delete(length2 - min, length2);
+                        }
+                        decodedTextView.q(spannableStringBuilder);
+                        decodedTextView.endBatchEdit();
+                        return;
+                    } catch (Throwable th) {
+                        decodedTextView.endBatchEdit();
+                        throw th;
+                    }
+                }
+                return;
+            }
+            return;
+        }
+    }
+}