chore: bump @github/copilot to 1.0.81-3

package.json

@@ -99,7 +99,7 @@
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.82.0",
-    "@github/copilot": "1.0.81-0",
+    "@github/copilot": "1.0.81-3",
     "@github/copilot-sdk": "1.0.11",
     "@microsoft/1ds-core-js": "^3.2.13",
     "@microsoft/1ds-post-js": "^3.2.13",

remote/package.json

@@ -3,7 +3,7 @@
   "version": "0.0.0",
   "private": true,
   "dependencies": {
-    "@github/copilot": "1.0.81-0",
+    "@github/copilot": "1.0.81-3",
     "@github/copilot-sdk": "1.0.11",
     "@microsoft/1ds-core-js": "^3.2.13",
     "@microsoft/1ds-post-js": "^3.2.13",

src/vs/platform/agentHost/node/copilot/copilotAgentSession.ts

@@ -1887,6 +1887,7 @@ export class CopilotAgentSession extends Disposable {
 			this._reconcileMcpServerEnablement().catch(error => this._logService.error(error, `[Copilot:${this.sessionId}] Failed to reconcile MCP enablement after customizations changed`));
 		}));
 		this._subscribeToEvents();
+		await this._registerSamplingInterest();
 		this._subscribeForLogging();
 		this._subscribeForMemoInvalidation();
 		this._subscribeForInstructionsCollectedTelemetry();
@@ -2885,6 +2886,36 @@ export class CopilotAgentSession extends Disposable {
 		}
 	}
 
+	/**
+	 * Advertises the MCP `sampling` client capability to plugin MCP
+	 * servers for the lifetime of this session.
+	 *
+	 * The Copilot runtime only exposes the `sampling` capability to a
+	 * plugin server (so its `createMessage` calls succeed rather than
+	 * failing with "sampling is not supported by this client") when the
+	 * session has a live consumer registered for the `sampling.requested`
+	 * event. SDK clients that drive sampling purely through
+	 * {@link rpc.mcp.executeSampling} (as we do in
+	 * {@link _handleSamplingCreateMessage}) do not implicitly count as a
+	 * consumer, so we register interest explicitly and release it on
+	 * disposal.
+	 */
+	private async _registerSamplingInterest(): Promise<void> {
+		try {
+			const { handle } = await this._wrapper.session.rpc.eventLog.registerInterest({ eventType: 'sampling.requested' });
+			if (this._store.isDisposed) {
+				await this._wrapper.session.rpc.eventLog.releaseInterest({ handle }).catch(() => undefined);
+				return;
+			}
+			this._register(toDisposable(() => {
+				this._wrapper.session.rpc.eventLog.releaseInterest({ handle }).catch(error =>
+					this._logService.error(error, `[Copilot:${this.sessionId}] Failed to release sampling.requested interest`));
+			}));
+		} catch (error) {
+			this._logService.error(error, `[Copilot:${this.sessionId}] Failed to register sampling.requested interest`);
+		}
+	}
+
 	/**
 	 * Selects (or clears) a custom agent on the live SDK session.
 	 * Mirrors the SDK's `rpc.agent.select` / `rpc.agent.deselect` pair.

src/vs/platform/agentHost/test/node/e2e/harness/modelRequestProjection.ts

@@ -55,6 +55,29 @@ const ORDINAL_UUID_RE = /\$\{uuid_\d+\}/g;
 /** Stands in for a path, whose spelling is per-machine. */
 const PATH_PLACEHOLDER = '${path}';
 
+/**
+ * Runtime-injected one-turn "change notice" blocks that the CLI/runtime prepends
+ * to the next user message when something about the environment changed since the
+ * previous turn: the working directory (`<working_directory_changed>`), the
+ * explicit additional-directory set (`<additional_directories_changed>`), or the
+ * available tools / model (`<tools_changed_notice>`, e.g. when `exit_plan_mode`
+ * is withdrawn after a plan is approved).
+ *
+ * These blocks are authored by the runtime, not by the host: whether one appears
+ * depends on session timing and runtime version rather than on anything VS Code
+ * composes, so a bump that starts emitting a new notice would otherwise read as a
+ * host regression. Like a `tool_result` payload or a run-time id, their presence
+ * is environment-derived and not part of the host-authored structure this
+ * projection asserts, so both sides elide them (including the whitespace that
+ * separates the notice from the actual message) before comparison.
+ */
+const CHANGE_NOTICE_RE = /<(tools_changed_notice|working_directory_changed|additional_directories_changed)>[\s\S]*?<\/\1>\n*/g;
+
+/** Removes any runtime-injected change-notice block from a message's text. */
+function elideChangeNotices(text: string): string {
+	return text.replace(CHANGE_NOTICE_RE, '');
+}
+
 /**
  * A path: a recorder placeholder root (`${workdir}`, with or without a
  * trailing segment), a Windows absolute path (`C:\x\y`), or a POSIX absolute
@@ -105,7 +128,7 @@ export interface IProjectedModelRequest {
 }
 
 function elideRuntimeIds(text: string): string {
-	return elidePaths(text.replace(RAW_UUID_RE, RUNTIME_ID_PLACEHOLDER).replace(ORDINAL_UUID_RE, RUNTIME_ID_PLACEHOLDER));
+	return elidePaths(elideChangeNotices(text).replace(RAW_UUID_RE, RUNTIME_ID_PLACEHOLDER).replace(ORDINAL_UUID_RE, RUNTIME_ID_PLACEHOLDER));
 }
 
 function projectValue(value: unknown): unknown {