feat: add rate_limit_event formatting to printClaudeStreamEvent (FAR-32)

rate_limit_event was previously falling through to the debug-only branch
and silently dropped in non-debug mode.  Now it surfaces a concise,
human-readable line for CLI consumers:

  rate_limit: type=five_hour status=allowed resets=2026-04-22T06:00:00.000Z

Two tests cover the exact FAR-32 repro payload and graceful handling of
missing rate_limit_info fields.

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

src/cli/format-event.test.ts

@@ -138,6 +138,39 @@ describe("printClaudeStreamEvent", () => {
     expect(output()).toBe("some output text");
   });
 
+  it("prints rate_limit_event with type, status, and reset time", () => {
+    printClaudeStreamEvent(JSON.stringify({
+      type: "rate_limit_event",
+      rate_limit_info: {
+        status: "allowed",
+        resetsAt: 1777056000,
+        rateLimitType: "five_hour",
+        overageStatus: "allowed",
+        isUsingOverage: false,
+      },
+      uuid: "3ab8f9eb-b9d6-4bf6-9c39-4608427717fc",
+      session_id: "ad5f3e11-3c0c-4144-b53d-d4b959e57cee",
+    }), false);
+    expect(output()).toContain("rate_limit:");
+    expect(output()).toContain("five_hour");
+    expect(output()).toContain("allowed");
+    expect(output()).toContain("resets=");
+    // Raw JSON must not be surfaced verbatim
+    expect(output()).not.toContain("3ab8f9eb-b9d6-4bf6-9c39-4608427717fc");
+  });
+
+  it("prints rate_limit_event with unknown fields gracefully", () => {
+    printClaudeStreamEvent(JSON.stringify({
+      type: "rate_limit_event",
+      rate_limit_info: {},
+    }), false);
+    expect(output()).toContain("rate_limit:");
+    expect(output()).toContain("type=unknown");
+    expect(output()).toContain("status=unknown");
+    // No resetsAt present — reset clause omitted
+    expect(output()).not.toContain("resets=");
+  });
+
   it("does not print unknown types in non-debug mode", () => {
     printClaudeStreamEvent(JSON.stringify({ type: "unknown", data: "stuff" }), false);
     expect(output()).toBe("");

src/cli/format-event.ts

@@ -133,6 +133,22 @@ export function printClaudeStreamEvent(raw: string, debug: boolean): void {
     return;
   }
 
+  if (type === "rate_limit_event") {
+    const info =
+      typeof parsed.rate_limit_info === "object" && parsed.rate_limit_info !== null
+        ? (parsed.rate_limit_info as Record<string, unknown>)
+        : {};
+    const limitType = typeof info.rateLimitType === "string" ? info.rateLimitType : "unknown";
+    const status = typeof info.status === "string" ? info.status : "unknown";
+    const resetsAt = typeof info.resetsAt === "number"
+      ? new Date(info.resetsAt * 1000).toISOString()
+      : "";
+    const parts = [`rate_limit: type=${limitType} status=${status}`];
+    if (resetsAt) parts.push(`resets=${resetsAt}`);
+    console.log(pc.yellow(parts.join(" ")));
+    return;
+  }
+
   if (debug) {
     console.log(pc.gray(line));
   }