Add pi-langfuse extension (Langfuse LLM observability for pi) — vendored from npm 1.5.8

extensions/pi-langfuse/types/langfuse-runtime-shims.d.ts

@@ -0,0 +1,49 @@
+declare module "@opentelemetry/sdk-trace-base" {
+  export class BasicTracerProvider {
+    constructor(options?: { spanProcessors?: unknown[] });
+    forceFlush?(): Promise<void>;
+    shutdown?(): Promise<void>;
+  }
+}
+
+declare module "@langfuse/otel" {
+  export class LangfuseSpanProcessor {
+    constructor(options: {
+      publicKey: string;
+      secretKey: string;
+      baseUrl: string;
+    });
+    forceFlush?(): Promise<void>;
+    shutdown?(): Promise<void>;
+  }
+}
+
+declare module "@langfuse/tracing" {
+  export function setLangfuseTracerProvider(provider: unknown): void;
+
+  export function startObservation(
+    name: string,
+    body?: Record<string, unknown>,
+    options?: { asType?: string },
+  ): unknown;
+
+  export function propagateAttributes<T>(
+    params: {
+      sessionId?: string;
+      traceName?: string;
+      metadata?: Record<string, string>;
+      tags?: string[];
+    },
+    fn: () => T,
+  ): T;
+}
+
+declare module "@langfuse/client" {
+  export class LangfuseClient {
+    constructor(options: {
+      publicKey: string;
+      secretKey: string;
+      baseUrl: string;
+    });
+  }
+}

extensions/pi-langfuse/types/node-shims.d.ts

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+declare module "node:fs" {
+  export function mkdirSync(path: string, options?: { recursive?: boolean }): void;
+  export function readFileSync(path: string, encoding: string): string;
+  export function existsSync(path: string): boolean;
+  export function writeFileSync(path: string, data: string, encoding: string): void;
+}
+
+declare module "node:crypto" {
+  export function randomUUID(): string;
+}
+
+declare module "node:os" {
+  export function homedir(): string;
+}
+
+declare module "node:path" {
+  export function resolve(...paths: string[]): string;
+  export function dirname(path: string): string;
+  export function basename(path: string, suffix?: string): string;
+}
+
+declare module "node:url" {
+  export function fileURLToPath(url: string | URL): string;
+}
+
+declare const process: {
+  cwd(): string;
+  env: Record<string, string | undefined>;
+};

extensions/pi-langfuse/types/pi-coding-agent.d.ts

@@ -0,0 +1,9 @@
+declare module "@earendil-works/pi-coding-agent" {
+  export interface ExtensionAPI {
+    on(event: string, handler: (event: any, ctx: any) => unknown): void;
+    registerCommand(
+      name: string,
+      options: { description?: string; handler: (args: string, ctx: any) => unknown },
+    ): void;
+  }
+}