feat(frontend): update config UI for DB-first config architecture

- ConfigSource type: 'default' | 'db' (removed 'env')
- Badge: 'db' shows '已配置', 'default' shows '默认值'
- Removed readonly field lock icon and env-var-only warning message
- Updated 'override' → 'db' references in ConfigGroupCard and ConfigManager
- Removed readonly/readonlyWarning from ConfigFieldDto interface

frontend/src/components/ConfigFieldInput.tsx

@@ -6,7 +6,6 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@
 import { Textarea } from '@/components/ui/textarea';
 import { Badge } from '@/components/ui/badge';
 import { Label } from '@/components/ui/label';
-import { Lock } from 'lucide-react';
 
 interface ConfigFieldInputProps {
   field: ConfigFieldDto;
@@ -15,18 +14,15 @@ interface ConfigFieldInputProps {
 }
 
 export function ConfigFieldInput({ field, value, onChange }: ConfigFieldInputProps) {
-  const isReadonly = !!field.readonly;
-
   const renderInput = () => {
-    const baseInputClasses = "bg-zinc-900/50 border-white/10 focus-visible:ring-primary focus-visible:border-primary transition-all duration-200" + (isReadonly ? " opacity-50 cursor-not-allowed" : "");
+    const baseInputClasses = "bg-zinc-900/50 border-white/10 focus-visible:ring-primary focus-visible:border-primary transition-all duration-200";
     switch (field.type) {
       case 'boolean':
         return (
           <Switch
             checked={Boolean(value)}
             onCheckedChange={onChange}
-            disabled={isReadonly}
-            className={`data-[state=checked]:bg-primary ${isReadonly ? 'opacity-50 cursor-not-allowed' : ''}`}
+            className="data-[state=checked]:bg-primary"
           />
         );
       case 'enum':
@@ -34,7 +30,6 @@ export function ConfigFieldInput({ field, value, onChange }: ConfigFieldInputPro
           <Select
             value={value !== undefined && value !== null ? String(value) : ''}
             onValueChange={onChange}
-            disabled={isReadonly}
           >
             <SelectTrigger className={`w-full ${baseInputClasses}`}>
               <SelectValue placeholder="请选择..." />
@@ -55,7 +50,6 @@ export function ConfigFieldInput({ field, value, onChange }: ConfigFieldInputPro
             onChange={(e) => onChange(e.target.value)}
             placeholder={field.sensitive && field.hasValue ? '••••••••' : ''}
             className={`min-h-[100px] ${baseInputClasses}`}
-            disabled={isReadonly}
           />
         );
       case 'number':
@@ -67,7 +61,6 @@ export function ConfigFieldInput({ field, value, onChange }: ConfigFieldInputPro
             placeholder={field.sensitive && field.hasValue ? '••••••••' : ''}
             min={field.min}
             max={field.max}
-            disabled={isReadonly}
             className={baseInputClasses}
           />
         );
@@ -80,7 +73,6 @@ export function ConfigFieldInput({ field, value, onChange }: ConfigFieldInputPro
             value={value !== undefined && value !== null ? String(value) : ''}
             onChange={(e) => onChange(e.target.value)}
             placeholder={field.sensitive && field.hasValue ? '••••••••' : ''}
-            disabled={isReadonly}
             className={baseInputClasses}
           />
         );
@@ -89,10 +81,8 @@ export function ConfigFieldInput({ field, value, onChange }: ConfigFieldInputPro
 
   const getSourceBadge = () => {
     switch (field.source) {
-      case 'override':
-        return <Badge className="ml-2 bg-primary/20 text-primary border-primary/30 tech-glow hover:bg-primary/30 transition-colors">覆盖值</Badge>;
-      case 'env':
-        return <Badge variant="secondary" className="ml-2 bg-amber-500/20 text-amber-500 border-amber-500/30 hover:bg-amber-500/30">环境变量</Badge>;
+      case 'db':
+        return <Badge className="ml-2 bg-primary/20 text-primary border-primary/30 tech-glow hover:bg-primary/30 transition-colors">已配置</Badge>;
       case 'default':
       default:
         return <Badge variant="outline" className="ml-2 border-zinc-600 text-zinc-400">默认值</Badge>;
@@ -112,27 +102,13 @@ export function ConfigFieldInput({ field, value, onChange }: ConfigFieldInputPro
           </div>
           <div className="pt-1">
             <span className="font-mono text-xs px-2 py-0.5 rounded-md bg-primary/10 text-primary border border-primary/20 inline-flex items-center">
-              $ {field.envKey}
+              {field.envKey}
             </span>
           </div>
         </div>
 
         <div className="flex-1 w-full max-w-xl flex flex-col gap-2">
           {renderInput()}
-          
-          {isReadonly && (
-            <div className="text-xs text-zinc-500 flex items-center gap-1.5 pt-1">
-              <Lock className="w-3.5 h-3.5" />
-              只读配置，请通过环境变量文件修改
-            </div>
-          )}
-
-          {!isReadonly && field.readonlyWarning && (
-            <div className="text-xs text-amber-500 flex items-center gap-1.5 pt-1">
-              <span className="w-1.5 h-1.5 rounded-full bg-amber-500 animate-pulse" />
-              {field.readonlyWarning}
-            </div>
-          )}
         </div>
       </div>
     </div>

frontend/src/components/ConfigGroupCard.tsx

@@ -33,12 +33,12 @@ export function ConfigGroupCard({
   onReset,
   isResetting,
 }: ConfigGroupCardProps) {
-  const hasOverride = group.fields.some((f) => f.source === 'override');
+  const hasOverride = group.fields.some((f) => f.source === 'db');
 
   const handleReset = () => {
-    // Only reset fields that actually have overrides
+    // Only reset fields that have been stored in DB
     const keysToReset = group.fields
-      .filter((f) => f.source === 'override')
+      .filter((f) => f.source === 'db')
       .map((f) => f.envKey);
 
     if (keysToReset.length > 0) {

frontend/src/components/ConfigManager.tsx

@@ -97,7 +97,7 @@ export function ConfigManager() {
     if (!data) return;
     const allOverrideKeys = data.groups
       .flatMap((g) => g.fields)
-      .filter((f) => f.source === 'override')
+      .filter((f) => f.source === 'db')
       .map((f) => f.envKey);
     if (allOverrideKeys.length === 0) return;
     if (confirm('确定要重置所有配置到默认值吗？这将立即生效。')) {
@@ -106,7 +106,7 @@ export function ConfigManager() {
   };
 
   const hasOverrides = data?.groups.some((g) =>
-    g.fields.some((f) => f.source === 'override')
+    g.fields.some((f) => f.source === 'db')
   ) ?? false;
 
   if (isLoading) {

frontend/src/services/configService.ts

@@ -1,6 +1,6 @@
 import api from '@/lib/api';
 
-export type ConfigSource = 'default' | 'env' | 'override';
+export type ConfigSource = 'default' | 'db';
 export type ConfigFieldType = 'string' | 'number' | 'boolean' | 'url' | 'text' | 'enum';
 
 export interface ConfigFieldDto {
@@ -9,8 +9,6 @@ export interface ConfigFieldDto {
   description: string;
   type: ConfigFieldType;
   sensitive: boolean;
-  readonly?: boolean;
-  readonlyWarning?: string;
   enumValues?: string[];
   min?: number;
   max?: number;