nautd/webui: scripting, labels, settings, set-location, pause fix

Session checkpoint on webui-plugin:
- engine dump (nautctl dump) + engine endgame integration
- per-file move locations persistence; torrent-level "Set location"
  with reset/keep-relative/leave-separate handling + residual prune
- Lua: naut.get_labels, define_settings/get_setting (script_host struct)
- daemon-owned labels (category+tags) + taxonomy persistence; webui write-through
- fix: pausing a completed/seeding torrent now sticks (stop wins over result)
- automation tab responsive layout; anime_sort label gating + settings

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/nautctl/main.c

@@ -17,6 +17,7 @@ static void usage(const char *program) {
         "  add SOURCE OUTPUT [IP:PORT ...]\n"
         "  list\n"
         "  show TORRENT_ID\n"
+        "  dump TORRENT_ID\n"
         "  remove TORRENT_ID\n"
         "  script PATH | unscript\n"
         "  status | events | shutdown\n"
@@ -93,6 +94,7 @@ int main(int argc, char **argv) {
         return stream_events(socket_path);
 
     json_t *params = NULL;
+    bool raw_dump = false;
     if (strcmp(method, "add") == 0) {
         if (arg + 1 >= argc) { usage(argv[0]); return 2; }
         method = "add_torrent";
@@ -113,14 +115,16 @@ int main(int argc, char **argv) {
         method = "torrents";
         params = json_object();
     } else if (strcmp(method, "show") == 0 ||
+               strcmp(method, "dump") == 0 ||
                strcmp(method, "remove") == 0) {
         json_int_t id;
         if (arg + 1 != argc || !parse_id(argv[arg], &id)) {
             usage(argv[0]);
             return 2;
         }
-        method = strcmp(method, "show") == 0 ? "torrent" :
-                                                   "remove_torrent";
+        if (strcmp(method, "show") == 0) method = "torrent";
+        else if (strcmp(method, "dump") == 0) { method = "dump_torrent"; raw_dump = true; }
+        else method = "remove_torrent";
         params = json_pack("{s:I}", "torrent_id", id);
     } else if (strcmp(method, "script") == 0) {
         if (arg + 1 != argc) { usage(argv[0]); return 2; }
@@ -145,8 +149,19 @@ int main(int argc, char **argv) {
         fprintf(stderr, "nautctl: RPC failed: %s\n", naut_strerror(error));
         return 1;
     }
-    int result = print_json(reply);
     bool ok = json_is_true(json_object_get(reply, "ok"));
+    int result;
+    /* `dump` returns a multi-line text blob; print it raw instead of escaped JSON. */
+    const char *dump = raw_dump
+        ? json_string_value(json_object_get(
+              json_object_get(reply, "result"), "dump"))
+        : NULL;
+    if (dump) {
+        fputs(dump, stdout);
+        result = 0;
+    } else {
+        result = print_json(reply);
+    }
     json_decref(reply);
     return result || !ok;
 }