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/preload/index.ts

@@ -15,6 +15,11 @@ import {
   type KnowledgeSearchReference,
   type KnowledgeSnapshot,
   type PastedImageInput,
+  type RuntimeConversationCompactInput,
+  type RuntimeConversationCompactResult,
+  type RuntimeCustomizationSettings,
+  type RuntimeNativeSnapshot,
+  type RuntimeNativeSnapshotInput,
   type RuntimeSettings,
   type RuntimeSettingsInput,
   type RuntimeConfigActionInput,
@@ -219,6 +224,11 @@ const desktopApi: DesktopApi = {
         answers: answers ?? []
       })
     },
+    compactConversation: (input: RuntimeConversationCompactInput) =>
+      ipcRenderer.invoke(
+        ipcChannels.agentCompactConversation,
+        input
+      ) as Promise<RuntimeConversationCompactResult>,
     onEvent: (listener) => {
       const handler = (_event: Electron.IpcRendererEvent, payload: AgentEvent): void =>
         listener(payload)
@@ -876,6 +886,22 @@ const desktopApi: DesktopApi = {
         action
       ) as Promise<RuntimeExtensionMarketplaceSnapshot>
   },
+  runtimeCustomization: {
+    getSettings: () =>
+      ipcRenderer.invoke(
+        ipcChannels.runtimeCustomizationGet
+      ) as Promise<RuntimeCustomizationSettings>,
+    updateSettings: (settings: RuntimeCustomizationSettings) =>
+      ipcRenderer.invoke(
+        ipcChannels.runtimeCustomizationUpdate,
+        settings
+      ) as Promise<RuntimeCustomizationSettings>,
+    getNativeSnapshot: (input: RuntimeNativeSnapshotInput) =>
+      ipcRenderer.invoke(
+        ipcChannels.runtimeNativeSnapshot,
+        input
+      ) as Promise<RuntimeNativeSnapshot>
+  },
   context: {
     selectFiles: () =>
       ipcRenderer.invoke(