ci: Add stub types to repository and configure TypeScript

- Add stubs/@opencode-ai/plugin/index.d.ts for CI environments
- Configure tsconfig.json to use path mapping for @opencode-ai/plugin
- Allows type checking to work in CI without local file dependencies

🤖 Generated with OpenCode

Author: rwese

stubs/@opencode-ai/plugin/index.d.ts

@@ -0,0 +1,38 @@
+/**
+ * Minimal stub for @opencode-ai/plugin types
+ * Used for CI environments where the actual plugin is not available
+ */
+
+export interface PluginContext {
+  directory: string;
+  client: {
+    session: {
+      get: (args: { path: { id: string } }) => Promise<{ data?: { id: string } }>;
+      todo: (args: { path: { id: string } }) => Promise<unknown>;
+      prompt: (args: { path: { id: string }; body: { agent?: string; model?: { providerID: string; modelID: string }; parts: Array<{ type: "text"; text: string }> }; query?: { directory?: string } }) => Promise<void>;
+      messages: (args: { path: { id: string } }) => Promise<unknown>;
+    };
+    tui: {
+      showToast: (args: { body: { title: string; message: string; variant: string; duration: number } }) => Promise<void>;
+    };
+  };
+}
+
+export type Plugin = (input: PluginContext) => Promise<{
+  tools?: Record<string, unknown>;
+  event?: (event: { event: unknown }) => Promise<void>;
+}>;
+
+export interface ToolDefinition<T extends (...args: unknown[]) => unknown> {
+  description: string;
+  args: Record<string, unknown>;
+  execute: T;
+}
+
+export declare function tool<T extends (...args: unknown[]) => unknown>(
+  definition: {
+    description: string;
+    args: Record<string, unknown>;
+  },
+  execute: T
+): ToolDefinition<T>;

tsconfig.json

@@ -15,8 +15,12 @@
     "moduleResolution": "NodeNext",
     "resolveJsonModule": true,
     "isolatedModules": true,
-    "noEmit": false
+    "noEmit": false,
+    "baseUrl": ".",
+    "paths": {
+      "@opencode-ai/plugin": ["./stubs/@opencode-ai/plugin"]
+    }
   },
-  "include": ["*.ts"],
+  "include": ["*.ts", "stubs/**/*.d.ts"],
   "exclude": ["node_modules", "dist", "**/*.test.ts"]
 }