fix(ci): break terminal-reuse fixture re-match loop

Author: k1yt

apps/vscode-e2e/src/fixtures/terminal-reuse-shell-race.ts

@@ -5,9 +5,20 @@ import { toolResultContains } from "./tool-result"
 export function addTerminalReuseShellRaceFixtures(mock: InstanceType<typeof LLMock>) {
 	// First command completes — model issues a second command on the same terminal.
 	// With the temp-script fix, both commands now deliver real output.
+	// Single-fire guard: `toolResultContains` is a permanent-history existence check, so once the
+	// first command's result is in history this predicate would match on EVERY subsequent re-prompt.
+	// If the second command's result does not satisfy Fixture B, Fixture A would keep re-emitting the
+	// second command forever (60s test timeout). Fire exactly once.
+	let secondCommandIssued = false
 	mock.addFixture({
 		match: {
-			predicate: (req) => toolResultContains(req, "call_terminal_reuse_001", ["first", "Exit code: 0"]),
+			predicate: (req) => {
+				if (secondCommandIssued) return false
+				if (!toolResultContains(req, "call_terminal_reuse_001", ["first", "Exit code: 0"])) return false
+				// Match confirmed — the response below will be emitted. Latch so we never match again.
+				secondCommandIssued = true
+				return true
+			},
 		},
 		response: {
 			toolCalls: [