fix(process): use monotonic time for provider execution budgets

src/javascript/recovery/RecoveryFiles.ts

@@ -279,6 +279,6 @@ export const checkRecoveryDeadline = (
   signal?: AbortSignal,
 ): void => {
   checkRecoveryCancellation(signal);
-  if (Date.now() >= deadline)
+  if (performance.now() >= deadline)
     throw new AnalysisTimeoutError(OPERATION, RECOVERY_LIMITS.timeoutMs);
 };

src/javascript/recovery/WakaruCommand.test.ts

@@ -33,7 +33,7 @@ it("rejects an exhausted shared execution budget before launching the next comma
       arguments: ["--version"],
       cwd: "/tmp/unused",
       environment: {},
-      deadline: Date.now() - 1,
+      deadline: performance.now() - 1,
       launcher: async () => {
         throw new Error("An expired budget must not launch");
       },
@@ -52,7 +52,7 @@ it("preserves caller cancellation before acquiring an expired execution budget",
       arguments: ["--version"],
       cwd: "/tmp/unused",
       environment: {},
-      deadline: Date.now() - 1,
+      deadline: performance.now() - 1,
       signal: AbortSignal.abort(),
       launcher: async () => {
         throw new Error("A cancelled request must not launch");
@@ -86,7 +86,7 @@ const commandFixture = (
       arguments: ["--version"],
       cwd: "/tmp/unused",
       environment: {},
-      deadline: Date.now() + 5_000,
+      deadline: performance.now() + 5_000,
       launcher,
     },
   };
@@ -140,7 +140,7 @@ it("enforces the shared deadline while exited output streams remain open", async
   });
   try {
     await expect(
-      runWakaruCommand({ ...context, deadline: Date.now() + 50 }),
+      runWakaruCommand({ ...context, deadline: performance.now() + 50 }),
     ).rejects.toMatchObject({
       _tag: "AnalysisTimeoutError",
       operation: "recover_javascript_sources",

src/javascript/recovery/WakaruProvider.ts

@@ -100,7 +100,7 @@ export class WakaruProvider implements JavaScriptRecoveryPort {
     let tree: SafeOutputTree | undefined;
     let failed: { readonly cause: unknown } | undefined;
     let execution: AnalysisExecution | undefined;
-    const deadline = Date.now() + RECOVERY_LIMITS.timeoutMs;
+    const deadline = performance.now() + RECOVERY_LIMITS.timeoutMs;
     try {
       checkRecoveryCancellation(options?.signal);
       const engine = await resolveWakaruCommand(this.environment);