refactor: daemon internals, and fix a leak the merge exposed

IdMultiplexer and EventRouter were the only classes in src/; they are now
createIdMultiplexer/createEventRouter closures like every other factory
here. The multiplexer kept {clientId, localId} per daemon id while the
bridge kept {send, clientId, localId, timer, isAttach} under the same key
— two maps of overlapping data, and mux.resolve()'s return value was
discarded at three of four call sites. One map now holds the union.

That merge fixes a real leak: removeClient cleared the multiplexer but
never the callbacks map, so a disconnected client's timers stayed armed
and later fired a response at a socket that was gone. clearClient now
cancels them, and a test pins it.

handleRequest polled every 250ms for up to 15s per request when Chrome
was down; N queued requests now await one connect signal.

server.ts uses its own protocol's serialize/deserialize instead of
hand-rolled JSON, and broadcast no longer routes through `this` — the
only `this` in the codebase, and the one thing that breaks when the
server object is destructured.

cdp/event-queue.ts held two unrelated concerns; the request/timeout half
moves to cdp/pending-requests.ts. cdp/daemon-transport.ts is the client
half of the daemon protocol, so it moves to daemon/transport.ts.

test/daemon/ needs adding to the test glob to run at all — there was no
daemon test directory before because none of this was reachable without
live Chrome.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

1 files changed, 0 insertions, 47 deletions

diff --git a/src/cdp/event-queue.ts b/src/cdp/event-queue.ts
index 330bdb8..08024b0 100644
--- a/src/cdp/event-queue.ts
+++ b/src/cdp/event-queue.ts
@@ -1,9 +1,5 @@
-import { type Result, err } from "../util/result";
-import { type CdpError, cdpError } from "./errors";
 import type { CdpEvent } from "./types";
 
-export type CdpResult = Result<unknown, CdpError>;
-
 export type EventQueue = {
   readonly push: (e: CdpEvent) => void;
   readonly end: () => void;
@@ -40,46 +36,3 @@ export const makeEventQueue = (): EventQueue => {
     },
   };
 };
-
-export type Pending = {
-  readonly resolve: (v: Result<unknown, CdpError>) => void;
-  readonly timer: ReturnType<typeof setTimeout>;
-  readonly method: string;
-};
-
-export const rejectAllPending = (pending: Map<number, Pending>, reason: string): void => {
-  for (const [, p] of pending) {
-    clearTimeout(p.timer);
-    p.resolve(err(cdpError("transport_closed", reason, p.method)));
-  }
-  pending.clear();
-};
-
-export const sendWithTimeout = (
-  pending: Map<number, Pending>,
-  id: number,
-  method: string,
-  timeoutMs: number,
-  timeoutLabel: string,
-  send: () => void,
-): Promise<CdpResult> =>
-  new Promise((resolve) => {
-    const timer = setTimeout(() => {
-      pending.delete(id);
-      resolve(err(cdpError("timeout", `${timeoutLabel} timeout after ${timeoutMs}ms: ${method}`, method)));
-    }, timeoutMs);
-    pending.set(id, { resolve, timer, method });
-    try {
-      send();
-    } catch (e) {
-      clearTimeout(timer);
-      pending.delete(id);
-      resolve(err(cdpError("transport_closed", e instanceof Error ? e.message : String(e), method)));
-    }
-  });
-
-export const makeOnClose = (closeListeners: Set<() => void>) =>
-  (cb: () => void): (() => void) => {
-    closeListeners.add(cb);
-    return () => closeListeners.delete(cb);
-  };