MeowOS for HiBy R3 Pro II — 公共发布版本（历史已重置）

• 全新单提交：清除含敏感信息的旧历史（sudo 口令、内网 IP、SSH 密钥路径、热点 SSID、设备 MAC）
• 本地开发文档/测试记录/构建脚本全部移入 gitignored 的 devdocs/ 与 scripts/build/（不入库）
• 保留：MeowOS 源码（launcher/watchdog/bootmenu/meow_svcd/SDK）、项目规范文档、mips-repo
增补组件：SDK 统一日志+通知 API、meow_svcd 服务管理器、mips-repo 软件仓库

patch_v2/meow_launcherd/fbpantest.c

@@ -0,0 +1,75 @@
+/* fbpantest.c — empirically find the ioctl that pans /dev/fb0 by yoffset.
+ * Confirmed already: fb0 is 480x720 RGB565, yres_virtual=1440 (double),
+ * yoffset selects the displayed buffer, ypanstep=1. We try candidate ioctls
+ * that set yoffset to the OTHER buffer and read yoffset back; whichever
+ * changes it is the pan mechanism. We restore yoffset immediately.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <stdint.h>
+
+#define GETV 0x4600
+
+static int get_info(int fd, uint32_t *yoff, uint32_t *yres) {
+    unsigned char v[160];
+    memset(v, 0, sizeof v);
+    if (ioctl(fd, GETV, v) < 0) return -1;
+    *yres = *(uint32_t*)(v + 4);
+    *yoff = *(uint32_t*)(v + 20);
+    return 0;
+}
+
+static void write_yoffset_to(int fd, uint32_t cmd, uint32_t yoffset) {
+    unsigned char v[160];
+    memset(v, 0, sizeof v);
+    if (ioctl(fd, GETV, v) < 0) return;
+    /* modify only the offset fields, keep everything else */
+    *(uint32_t*)(v + 16) = 0;
+    *(uint32_t*)(v + 20) = yoffset;
+    ioctl(fd, cmd, v);
+}
+
+int main(void) {
+    int fd = open("/dev/fb0", O_RDWR);
+    if (fd < 0) { perror("open /dev/fb0"); return 1; }
+    uint32_t orig = 0, yres = 0;
+    if (get_info(fd, &orig, &yres) < 0) { perror("getvar"); return 1; }
+    uint32_t target = (orig < yres) ? yres : 0;
+    printf("orig yoffset=%u yres=%u target(other buf)=%u\n", orig, yres, target);
+
+    unsigned tests[] = { 0x4601, 0x4606 };  /* PUT_VSCREENINFO, PAN_DISPLAY(nr 0x06) */
+    for (unsigned i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {
+        uint32_t cmd = tests[i];
+        write_yoffset_to(fd, cmd, target);
+        uint32_t now = 0, tmp = 0;
+        int ok = get_info(fd, &now, &tmp);
+        printf("  cmd=0x%04X -> yoffset=%u  (target %u)  %s\n",
+               cmd, now, target, (ok==0 && now==target) ? "*** PAN WORKS ***" : "");
+        /* restore */
+        if (ok == 0 && now == target) {
+            write_yoffset_to(fd, cmd, orig);
+            uint32_t back = 0;
+            get_info(fd, &back, &tmp);
+            printf("    restored to yoffset=%u\n", back);
+            break;
+        }
+    }
+
+    /* also probe FBIOBLANK candidate 0x4611 and 0x4603 just to report which blanks */
+    errno = 0;
+    int b1 = ioctl(fd, 0x4603, 5);
+    int e1 = errno; errno = 0;
+    int b2 = ioctl(fd, 0x4611, 5);
+    int e2 = errno;
+    printf("  blank 0x4603(5) r=%d errno=%d ; 0x4611(5) r=%d errno=%d\n", b1, e1, b2, e2);
+    /* ensure unblanked back to 0 regardless */
+    ioctl(fd, 0x4611, 0);   /* unblank (works per launcher) */
+
+    close(fd);
+    return 0;
+}