fix: align telemetry client payload and dimensions with backend schema

Restructure the TelemetryClient to send the correct backend envelope
format ({app, schemaVersion, installId, events: [{name, occurredAt, dimensions}]})
instead of the old per-event format. Update all event dimension names
to match the backend registry (agent_role, adapter_type, error_code, etc.).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

packages/shared/src/telemetry/client.ts

@@ -1,8 +1,7 @@
-import os from "node:os";
 import { createHash } from "node:crypto";
 import type {
   TelemetryConfig,
-  TelemetryEventEnvelope,
+  TelemetryEvent,
   TelemetryEventName,
   TelemetryState,
 } from "./types.js";
@@ -12,11 +11,10 @@ const BATCH_SIZE = 50;
 const SEND_TIMEOUT_MS = 5_000;
 
 export class TelemetryClient {
-  private queue: TelemetryEventEnvelope[] = [];
+  private queue: TelemetryEvent[] = [];
   private readonly config: TelemetryConfig;
   private readonly stateFactory: () => TelemetryState;
   private readonly version: string;
-  private readonly sessionId: string;
   private state: TelemetryState | null = null;
   private flushInterval: ReturnType<typeof setInterval> | null = null;
 
@@ -24,22 +22,16 @@ export class TelemetryClient {
     this.config = config;
     this.stateFactory = stateFactory;
     this.version = version;
-    this.sessionId = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
   }
 
   track(eventName: TelemetryEventName, dimensions?: Record<string, string | number | boolean>): void {
     if (!this.config.enabled) return;
-    const state = this.getState();
+    this.getState(); // ensure state is initialised (side-effect: creates state file on first call)
 
     this.queue.push({
-      installId: state.installId,
-      sessionId: this.sessionId,
-      event: eventName,
+      name: eventName,
+      occurredAt: new Date().toISOString(),
       dimensions: dimensions ?? {},
-      timestamp: new Date().toISOString(),
-      version: this.version,
-      os: os.platform(),
-      arch: os.arch(),
     });
 
     if (this.queue.length >= BATCH_SIZE) {
@@ -51,7 +43,10 @@ export class TelemetryClient {
     if (!this.config.enabled || this.queue.length === 0) return;
 
     const events = this.queue.splice(0);
+    const state = this.getState();
     const endpoint = this.config.endpoint ?? DEFAULT_ENDPOINT;
+    const app = this.config.app ?? "paperclip";
+    const schemaVersion = this.config.schemaVersion ?? "1";
 
     const controller = new AbortController();
     const timer = setTimeout(() => controller.abort(), SEND_TIMEOUT_MS);
@@ -59,7 +54,12 @@ export class TelemetryClient {
       await fetch(endpoint, {
         method: "POST",
         headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({ events }),
+        body: JSON.stringify({
+          app,
+          schemaVersion,
+          installId: state.installId,
+          events,
+        }),
         signal: controller.signal,
       });
     } catch {