feat(podkop): add configurable cache file path support

luci-app-podkop/htdocs/luci-static/resources/view/podkop/podkop.js

@@ -697,6 +697,13 @@ return view.extend({
             return true;
         };
 
+        o = s.taboption('additional', form.Value, 'cache_file', 'Cache File Path', 'Select or enter path for sing-box cache file');
+        o.value('/tmp/cache.db', 'RAM (/tmp/cache.db)');
+        o.value('/usr/share/sing-box/cache.db', 'Flash (/usr/share/sing-box/cache.db)');
+        o.default = '/tmp/cache.db';
+        o.rmempty = false;
+        o.ucisection = 'main';
+
         // Diagnostics tab
         o = s.tab('diagnostics', _('Diagnostics'));
 

podkop/files/etc/init.d/podkop

@@ -754,9 +754,20 @@ sing_box_dns_rule_fakeip_section() {
 }
 
 sing_box_cache_file() {
-    log "Configure cache.db in sing-box"
+    local cache_path
+
+    config_get cache_file "main" "cache_file" "/tmp/cache.db"
+    
+    if [ "$cache_file" = "custom" ]; then
+        config_get cache_path "main" "custom_cache_path"
+    else
+        cache_path="$cache_file"
+    fi
+
+    log "Configure sing-box cache.db path"
+
     jq \
-    --arg CACHE_FILE_PATH "$CACHE_FILE_PATH" \
+    --arg CACHE_FILE_PATH "$cache_path" \
     '.experimental = {
         "cache_file": {
         "enabled": true,