feat: add OpenProse plugin skills

src/plugins/manifest-registry.ts

@@ -15,6 +15,7 @@ export type PluginManifestRecord = {
   kind?: PluginKind;
   channels: string[];
   providers: string[];
+  skills: string[];
   origin: PluginOrigin;
   workspaceDir?: string;
   rootDir: string;
@@ -86,6 +87,7 @@ function buildRecord(params: {
     kind: params.manifest.kind,
     channels: params.manifest.channels ?? [],
     providers: params.manifest.providers ?? [],
+    skills: params.manifest.skills ?? [],
     origin: params.candidate.origin,
     workspaceDir: params.candidate.workspaceDir,
     rootDir: params.candidate.rootDir,

src/plugins/manifest.ts

@@ -11,6 +11,7 @@ export type PluginManifest = {
   kind?: PluginKind;
   channels?: string[];
   providers?: string[];
+  skills?: string[];
   name?: string;
   description?: string;
   version?: string;
@@ -67,6 +68,7 @@ export function loadPluginManifest(rootDir: string): PluginManifestLoadResult {
   const version = typeof raw.version === "string" ? raw.version.trim() : undefined;
   const channels = normalizeStringList(raw.channels);
   const providers = normalizeStringList(raw.providers);
+  const skills = normalizeStringList(raw.skills);
 
   let uiHints: Record<string, PluginConfigUiHint> | undefined;
   if (isRecord(raw.uiHints)) {
@@ -81,6 +83,7 @@ export function loadPluginManifest(rootDir: string): PluginManifestLoadResult {
       kind,
       channels,
       providers,
+      skills,
       name,
       description,
       version,