Preserve server sort order when parsing issue search results (#8717)

* Initial plan

* Preserve server sort order when parsing issue search results

Agent-Logs-Url: https://github.com/microsoft/vscode-pull-request-github/sessions/ddf9881f-6b22-4386-902f-ffbb389676e4

Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: alexr00 <38270282+alexr00@users.noreply.github.com>

Author: Copilot

src/@types/vscode.proposed.chatParticipantPrivate.d.ts

@@ -303,6 +303,17 @@ declare module 'vscode' {
 		 * Unique ID for the subagent invocation, used to group tool calls from the same subagent run together.
 		 */
 		subAgentInvocationId?: string;
+		/**
+		 * W3C trace context `traceparent` header value identifying the active distributed
+		 * tracing span. When provided to a tool implementation backed by an MCP server, this
+		 * value is forwarded as `_meta.traceparent` on the JSON-RPC `tools/call` request so
+		 * downstream servers can correlate their spans (MCP SEP-414).
+		 */
+		traceparent?: string;
+		/**
+		 * Optional W3C trace context `tracestate` header value paired with `traceparent`.
+		 */
+		tracestate?: string;
 		/**
 		 * Pre-tool-use hook result, if the hook was already executed by the caller.
 		 * When provided, the tools service will skip executing its own preToolUse hook

src/github/githubRepository.ts

@@ -909,13 +909,17 @@ export class GitHubRepository extends Disposable {
 			});
 			Logger.debug(`Fetch issues with query - done`, this.id);
 
-			const issues: Issue[] = [];
+			let issues: Issue[] = [];
 			if (data && data.search.edges) {
-				await Promise.all(data.search.edges.map(async raw => {
+				// Preserve the order returned by the server (e.g. sort:created-desc).
+				// Using `Promise.all(map(async ... push))` would reorder results by completion time.
+				const parsed = await Promise.all(data.search.edges.map(async raw => {
 					if (raw.node.id) {
-						issues.push(await parseGraphQLIssue(raw.node, this));
+						return parseGraphQLIssue(raw.node, this);
 					}
+					return undefined;
 				}));
+				issues = parsed.filter((issue): issue is Issue => issue !== undefined);
 			}
 			return {
 				items: issues,