refactor(launcher): 拆分 meow_launcherd.c(9778行)→meow_launcherd/ 多文件(agent-149)

- 14 模块 .c + meow_launcher_internal.h(642): util/font_theme/fb_compositor/settings_page/power_menu/notif_center/app_launcher/main_menu/audio/backlight/net/keys/about/statusbar; meow_launcherd.c 已删
- 按行逐字搬移(0-diff), 118函数提升非static+47组extern(内部头), #if0退役区不编入(源码留.pre_split.bak)
- 关于本机小改: 作者 AskaEth/17 + info/item[13]防越界 + s_dd_modal 超高滚动(clamp/触摸滚动/音量键跟随/裁剪, 仅超高启用)
- build_launcher.sh 编译列表→模块; 文档/注释引用 meow_launcherd.c→模块/目录
- 编译0warning/-Wall -Wextra告警集与原文一致(77条无新增)/qemu-mipsel冒烟一致(--scan/--sysdump); launcher=c0799357(505KB; md5因多文件重编译与原文异,非回归依据)
- 备份 meow_launcherd.c.pre_split.bak/meow_launcherd.pre_split.bak; M2.69(0.7.64)已推卡并用户验证OK

GESTURE_BACK_DESIGN.md

@@ -109,7 +109,7 @@
 | `patch_v2/sdk/meow_ui_gfx.c` | 新增 `meow_ui_swipe_hint(x)` 顶部横条绘制 |
 | `patch_v2/sdk/meow_ui_widget.c`（如有输入/绘制分发） | 分发 `on_swipe_progress` |
 | `patch_v2/meow_watchdog/meow_watchdog.c` | 删除 `paint_button()` 返回键绘制/按钮命中；保留兜底 |
-| `patch_v2/meow_launcherd/meow_launcherd.c` | 解析 app.json `immersive` → 写 `/tmp/meowapp_state` |
+| `patch_v2/meow_launcherd/app_launcher.c`（`meow_write_app_state`/`launch_app`） | 解析 app.json `immersive` → 写 `/tmp/meowapp_state` |
 | `patch_v2/hello_app/hello.c` | 删 `on_key(KEY_POWER)→exit`；声明 immersive；处理 `on_swipe_progress` 画条 |
 | `patch_v2/apps_assets/apps/os.meow.hello/app.json` | 加 `"immersive":1` |
 | `APPS.md` / `MEOW_APP_SDK.md` | 已写 §3.4.1 规范；SDK 文档补 `on_swipe_progress`/`meow_ui_swipe_hint` |