feat: 4ma 用车计时助手 v1.0

- 无障碍服务监听7MA出行小程序，匹配关键词自动开始/结束计时
- 事件驱动截图+ML Kit离线中文OCR兜底，解决WebView无障碍树不稳定
- 常驻计时通知(15/18/30分钟提醒)与结束用车按钮
- 浅色主题主界面：权限状态、具体实现、安全/免责/法律声明
- 电池白名单+自启动引导+onUnbind自动重绑守护
- 无网络权限，完全离线运行

tools/make_icons.py

@@ -0,0 +1,79 @@
+# 生成 4ma 应用图标（PNG，各密度 mipmap）
+# 设计：浅色圆角底板 + 绿色圆角方块 + 白色加粗 "4ma"
+import os
+from PIL import Image, ImageDraw, ImageFont
+
+BASE = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+RES = os.path.join(BASE, "app", "src", "main", "res")
+
+SIZES = {
+    "mipmap-mdpi": 48,
+    "mipmap-hdpi": 72,
+    "mipmap-xhdpi": 96,
+    "mipmap-xxhdpi": 144,
+    "mipmap-xxxhdpi": 192,
+}
+
+MASTER = 1024
+BG = (242, 247, 251, 255)        # 浅色底板
+TILE = (16, 185, 129, 255)       # 品牌绿 #10B981
+TILE_DARK = (5, 150, 105, 255)   # 深绿 #059669
+WHITE = (255, 255, 255, 255)
+
+
+def load_font(size):
+    for name in ("segoeuib.ttf", "arialbd.ttf", "DejaVuSans-Bold.ttf"):
+        for root in (os.environ.get("WINDIR", "C:/Windows") + "/Fonts", "/usr/share/fonts/truetype"):
+            p = os.path.join(root, name)
+            if os.path.exists(p):
+                try:
+                    return ImageFont.truetype(p, size)
+                except Exception:
+                    continue
+    return ImageFont.load_default()
+
+
+def make_master():
+    img = Image.new("RGBA", (MASTER, MASTER), (0, 0, 0, 0))
+    d = ImageDraw.Draw(img)
+
+    # 底板：整幅浅色（launcher 会自行裁形）
+    d.rectangle([0, 0, MASTER, MASTER], fill=BG)
+
+    # 绿色圆角方块（留 16% 边距）
+    m = int(MASTER * 0.16)
+    d.rounded_rectangle([m, m, MASTER - m, MASTER - m],
+                        radius=int(MASTER * 0.19), fill=TILE)
+
+    # 底部 1/4 叠加深绿，做出轻微渐变感
+    overlay = Image.new("RGBA", (MASTER, MASTER), (0, 0, 0, 0))
+    od = ImageDraw.Draw(overlay)
+    od.rounded_rectangle([m, MASTER - int(MASTER * 0.30), MASTER - m, MASTER - m],
+                         radius=int(MASTER * 0.19), fill=TILE_DARK)
+    img = Image.alpha_composite(img, overlay)
+    d = ImageDraw.Draw(img)
+
+    # 白色加粗 "4ma"
+    font = load_font(int(MASTER * 0.40))
+    text = "4ma"
+    bb = d.textbbox((0, 0), text, font=font)
+    w = bb[2] - bb[0]
+    h = bb[3] - bb[1]
+    x = (MASTER - w) / 2 - bb[0]
+    y = (MASTER - h) / 2 - bb[1]
+    d.text((x, y), text, font=font, fill=WHITE)
+    return img
+
+
+def main():
+    master = make_master()
+    for folder, size in SIZES.items():
+        out_dir = os.path.join(RES, folder)
+        os.makedirs(out_dir, exist_ok=True)
+        out = os.path.join(out_dir, "ic_launcher.png")
+        master.resize((size, size), Image.LANCZOS).save(out)
+        print("written:", out)
+
+
+if __name__ == "__main__":
+    main()