fix(openclaw): remove MCP/Skills/Prompts support from OpenClaw

OpenClaw only needs provider management functionality, not MCP, Skills,
or Prompts features. This commit removes the incorrectly added support:

- Revert SCHEMA_VERSION from 6 to 5 (remove v5->v6 migration)
- Remove enabled_openclaw field from mcp_servers and skills tables
- Remove openclaw field from McpApps and SkillApps structs
- Update DAO queries to exclude enabled_openclaw column
- Fix frontend components and types to exclude openclaw from MCP/Prompts
- Update all related test files

src/components/mcp/McpFormModal.tsx

@@ -66,7 +66,6 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
     codex: boolean;
     gemini: boolean;
     opencode: boolean;
-    openclaw: boolean;
   }>(() => {
     if (initialData?.apps) {
       return { ...initialData.apps };
@@ -76,7 +75,6 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
       codex: defaultEnabledApps.includes("codex"),
       gemini: defaultEnabledApps.includes("gemini"),
       opencode: defaultEnabledApps.includes("opencode"),
-      openclaw: defaultEnabledApps.includes("openclaw"),
     };
   });
 

src/components/prompts/PromptFormModal.tsx

@@ -30,14 +30,13 @@ const PromptFormModal: React.FC<PromptFormModalProps> = ({
 }) => {
   const { t } = useTranslation();
   const appName = t(`apps.${appId}`);
-  const filenameMap: Record<AppId, string> = {
+  const filenameMap: Record<Exclude<AppId, "openclaw">, string> = {
     claude: "CLAUDE.md",
     codex: "AGENTS.md",
     gemini: "GEMINI.md",
     opencode: "AGENTS.md",
-    openclaw: "AGENTS.md",
   };
-  const filename = filenameMap[appId];
+  const filename = filenameMap[appId as Exclude<AppId, "openclaw">];
   const [name, setName] = useState("");
   const [description, setDescription] = useState("");
   const [content, setContent] = useState("");

src/components/prompts/PromptFormPanel.tsx

@@ -24,14 +24,13 @@ const PromptFormPanel: React.FC<PromptFormPanelProps> = ({
 }) => {
   const { t } = useTranslation();
   const appName = t(`apps.${appId}`);
-  const filenameMap: Record<AppId, string> = {
+  const filenameMap: Record<Exclude<AppId, "openclaw">, string> = {
     claude: "CLAUDE.md",
     codex: "AGENTS.md",
     gemini: "GEMINI.md",
     opencode: "AGENTS.md",
-    openclaw: "AGENTS.md",
   };
-  const filename = filenameMap[appId];
+  const filename = filenameMap[appId as Exclude<AppId, "openclaw">];
   const [name, setName] = useState("");
   const [description, setDescription] = useState("");
   const [content, setContent] = useState("");

src/types.ts

@@ -288,7 +288,6 @@ export interface McpApps {
   codex: boolean;
   gemini: boolean;
   opencode: boolean;
-  openclaw: boolean;
 }
 
 // MCP 服务器条目（v3.7.0 统一结构）