fix: extract linuxdeploy to /root (persists), add wrapper diagnostics

.gitea/workflows/release.yml

@@ -181,8 +181,12 @@ jobs:
             -O /tmp/linuxdeploy.AppImage
           chmod +x /tmp/linuxdeploy.AppImage
 
-          (cd /tmp && /tmp/linuxdeploy.AppImage --appimage-extract)
-          mv /tmp/squashfs-root /tmp/linuxdeploy-root
+          rm -rf /root/linuxdeploy-root
+          (cd /root && /tmp/linuxdeploy.AppImage --appimage-extract)
+          mv /root/squashfs-root /root/linuxdeploy-root
+          echo "Extracted linuxdeploy:"
+          ls /root/linuxdeploy-root/
+          ls /root/linuxdeploy-root/usr/bin/ 2>/dev/null || echo "no usr/bin"
 
           gcc -o ~/.cache/tauri/linuxdeploy-x86_64.AppImage tools/ld_wrapper.c
           chmod +x ~/.cache/tauri/linuxdeploy-x86_64.AppImage
@@ -192,6 +196,7 @@ jobs:
           TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
           TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ''
           NODE_OPTIONS: '--max_old_space_size=4096'
+          RUST_LOG: tauri_bundler=debug
         run: npm run tauri -- build --bundles appimage,deb
 
       - name: Upload to release

tools/ld_wrapper.c

@@ -1,5 +1,37 @@
 #include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+
 int main(int argc, char **argv) {
-    execv("/tmp/linuxdeploy-root/AppRun", argv);
+    const char *appdir = "/root/linuxdeploy-root";
+    char apprun[256], ldbin[256], new_path[4096];
+    struct stat st;
+
+    snprintf(apprun, sizeof(apprun), "%s/AppRun", appdir);
+    snprintf(ldbin, sizeof(ldbin), "%s/usr/bin/linuxdeploy", appdir);
+
+    fprintf(stderr, "[ld-wrapper] APPDIR=%s\n", appdir);
+    fprintf(stderr, "[ld-wrapper] AppRun exists: %s\n", stat(apprun, &st) == 0 ? "yes" : "NO");
+    fprintf(stderr, "[ld-wrapper] linuxdeploy exists: %s\n", stat(ldbin, &st) == 0 ? "yes" : "NO");
+    fflush(stderr);
+
+    setenv("APPDIR", appdir, 1);
+    char *old_path = getenv("PATH");
+    snprintf(new_path, sizeof(new_path), "%s/usr/bin:%s", appdir, old_path ? old_path : "");
+    setenv("PATH", new_path, 1);
+
+    if (stat(ldbin, &st) == 0) {
+        fprintf(stderr, "[ld-wrapper] exec %s\n", ldbin);
+        fflush(stderr);
+        execv(ldbin, argv);
+        perror("[ld-wrapper] execv linuxdeploy");
+    }
+
+    fprintf(stderr, "[ld-wrapper] fallback exec %s\n", apprun);
+    fflush(stderr);
+    execv(apprun, argv);
+    perror("[ld-wrapper] execv AppRun");
     return 1;
 }