feat: add static repository plugin format

examples/headless-agent/tests/keyless-smoke.e2e.ts

@@ -36,6 +36,17 @@ describe('headless-agent keyless smoke', () => {
     const result = lines.at(-1)
     expect(stderr).toBe('')
     expect(events.some(event => event.type === 'tool/call' && event.data.name === 'bash')).toBe(true)
+    const catalogMessage = events.find(event => event.type === 'user/message'
+      && event.data.source.kind === 'plugin'
+      && event.data.source.plugin === 'dsh-tool-skill')
+    const catalog = catalogMessage?.type === 'user/message'
+      ? catalogMessage.data.content.filter(block => block.type === 'text').map(block => block.text).join('\n')
+      : ''
+    expect(catalog.split('\n').find(line => line.includes('repository-fixture'))).toMatchInlineSnapshot(
+      `
+        "- \`repository-fixture\`: Repository fixture skill."
+      `,
+    )
     const toolResult = events.find(event => event.type === 'tool/result')
     expect(JSON.stringify(toolResult)).toContain('CLI_TOOL_ROUND_TRIP')
     expect(result).toMatchObject({