feat(openclaw): add Workspace Files panel for managing bootstrap md files

Add a dedicated panel to read/write OpenClaw's 6 workspace bootstrap files
(AGENTS.md, SOUL.md, USER.md, IDENTITY.md, TOOLS.md, MEMORY.md) directly
from ~/.openclaw/workspace/, with a whitelist-secured backend and Markdown
editor UI. Also fix prompt auto-import missing OpenCode/OpenClaw and the
PromptFormPanel filenameMap type exclusion.

src/lib/api/index.ts

@@ -9,6 +9,7 @@ export { vscodeApi } from "./vscode";
 export { proxyApi } from "./proxy";
 export { openclawApi } from "./openclaw";
 export { sessionsApi } from "./sessions";
+export { workspaceApi } from "./workspace";
 export * as configApi from "./config";
 export type { ProviderSwitchEvent } from "./providers";
 export type { Prompt } from "./prompts";