feat: add native runtime customization

OpenCode and Continue customization was previously planned but unavailable, and Runtime-native capabilities were not represented consistently across providers. GoodBuddy now provides secure Main-owned customization settings, truthful native inventories, OpenCode Agents and Commands, Continue Rules and Prompts, DSH Web Search/Fetch, MCP Prompt and Resource metadata, and manual compaction where supported.

Native capabilities are presented in eleven accessible tabs with Tools separated from Commands, LSP, and Formatters. Tool source and Ask/Execute availability are explicit, external OpenCode remains connection-only, Continue reports unsupported static tool discovery instead of advertising unreachable Skills, and disposable inventory probes avoid retaining background runtimes.

Ask remains read-only at the Runtime boundary, Execute keeps the existing authorization controls, and credentials remain confined to Main.

Release note: 新增 OpenCode、Continue 与 DeepSeek Harness 的 Runtime 原生定制与真实能力清单；工具来源、Ask/Execute 可用性、上下文压缩和 MCP 元数据现在可清晰查看，同时继续保持 Main 进程凭据保护与现有权限边界。

src/main/agent/selected-runtime-manager.test.ts

@@ -16,6 +16,29 @@ function runtime() {
     supportsToolExecution: true,
     detail: 'ready'
   }))
+  const getNativeSnapshot = vi.fn(async () => ({
+    provider: 'opencode' as const,
+    available: true,
+    inventoryStatus: 'available' as const,
+    detail: 'ready',
+    agents: [],
+    tools: [],
+    toolsSupported: true,
+    commands: [],
+    lsp: [],
+    formatters: [],
+    mcpServers: [],
+    skills: [],
+    rules: [],
+    prompts: [],
+    resources: [],
+    resourcesSupported: true,
+    context: {
+      strategy: 'native' as const,
+      manualCompact: true,
+      detail: 'ready'
+    }
+  }))
   const value: AgentRuntime = {
     runtimeId: 'model',
     requiresToolApproval: false,
@@ -29,6 +52,7 @@ function runtime() {
       detail: 'ready'
     })),
     testConnection,
+    getNativeSnapshot,
     async *run(
       request: AgentExecutionRequest
     ): AsyncGenerator<RuntimeEvent, void, void> {
@@ -40,7 +64,13 @@ function runtime() {
     releaseConversation,
     dispose
   }
-  return { value, releaseConversation, dispose, testConnection }
+  return {
+    value,
+    releaseConversation,
+    dispose,
+    testConnection,
+    getNativeSnapshot
+  }
 }
 
 describe('SelectedRuntimeManager', () => {
@@ -153,6 +183,30 @@ describe('SelectedRuntimeManager', () => {
     await manager.dispose()
   })
 
+  it('disposes a native-inventory runtime without caching it', async () => {
+    const inspected = runtime()
+    const cached = runtime()
+    const create = vi
+      .fn()
+      .mockResolvedValueOnce(inspected.value)
+      .mockResolvedValueOnce(cached.value)
+    const manager = new SelectedRuntimeManager(create)
+    const selection = { provider: 'opencode' as const }
+
+    await expect(
+      manager.getNativeSnapshot(selection, 'C:\\Projects\\One')
+    ).resolves.toMatchObject({
+      provider: 'opencode',
+      inventoryStatus: 'available'
+    })
+    expect(inspected.getNativeSnapshot).toHaveBeenCalledOnce()
+    expect(inspected.dispose).toHaveBeenCalledOnce()
+
+    await manager.getRuntime(selection, 'C:\\Projects\\One')
+    expect(create).toHaveBeenCalledTimes(2)
+    await manager.dispose()
+  })
+
   it('waits for a pending connection-test runtime during shutdown', async () => {
     let finishCreate!: (value: AgentRuntime) => void
     const pendingCreate = new Promise<AgentRuntime>((resolve) => {