feat: add static repository plugin format

examples/headless-agent/tests/fixtures/cli.cordis.yml

@@ -1,6 +1,12 @@
 - id: cli-mock-llm
   name: './cli-mock-llm.ts'
 
+- id: repository-plugin-runtime
+  name: '@deepseek-ai/dsh-repository-plugin'
+
+- id: repository-plugin-fixture
+  name: './repository-plugin/dsh-plugin.mjs'
+
 - id: base
   name: '@cordisjs/plugin-include'
   config:
@@ -16,4 +22,8 @@
           model: cli-mock
           persistenceRoot: './.sessions'
           workspaceContext: false
+          dshHome: './.dsh-home'
+          skills:
+            local:
+              agentsHome: './.agents-home'
           persona: 'Keyless headless-agent smoke.'

examples/headless-agent/tests/fixtures/repository-plugin/dsh-plugin-assets/skills/0/repository-fixture/SKILL.md

@@ -0,0 +1,6 @@
+---
+name: repository-fixture
+description: Repository fixture skill.
+---
+
+Static instructions from a prepared repository plugin.

examples/headless-agent/tests/fixtures/repository-plugin/dsh-plugin.mjs

@@ -0,0 +1,9 @@
+// Generated by dsh-plugin-prepare. Do not edit.
+const manifest = { "name": "headless-repository-fixture", "skills": ["dsh-plugin-assets/skills/0"] }
+export const name = 'headless-repository-fixture'
+export const inject = ['loader']
+export async function apply(ctx) {
+  const runtime = ctx.loader.builtins['dsh-repository-plugin']
+  if (runtime === undefined) throw new Error('missing Cordis builtin dsh-repository-plugin')
+  await ctx.plugin(runtime, { baseUrl: import.meta.url, manifest })
+}