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>

5 files changed, 5 insertions, 5 deletions

diff --git a/test/manual/daemon-transport-test.ts b/test/manual/daemon-transport-test.ts
index 5738e23..30f5a29 100644
--- a/test/manual/daemon-transport-test.ts
+++ b/test/manual/daemon-transport-test.ts
@@ -1,5 +1,5 @@
 import { createIpcServer } from "../../src/daemon/server";
-import { createDaemonTransport } from "../../src/cdp/daemon-transport";
+import { createDaemonTransport } from "../../src/daemon/transport";
 import { DAEMON_SOCKET_PATH } from "../../src/daemon/protocol";
 import type { WireMessage } from "../../src/daemon/protocol";
 import { unlinkSync } from "node:fs";
diff --git a/test/manual/e2e-test.ts b/test/manual/e2e-test.ts
index 81cb4df..02e04a4 100644
--- a/test/manual/e2e-test.ts
+++ b/test/manual/e2e-test.ts
@@ -1,6 +1,6 @@
 import { createIpcServer } from "../../src/daemon/server";
 import { createCdpBridge, type SendToClient } from "../../src/daemon/bridge";
-import { createDaemonTransport } from "../../src/cdp/daemon-transport";
+import { createDaemonTransport } from "../../src/daemon/transport";
 import { DAEMON_SOCKET_PATH } from "../../src/daemon/protocol";
 import type { WireRequest } from "../../src/daemon/protocol";
 import { unlinkSync } from "node:fs";
diff --git a/test/manual/forms-test.ts b/test/manual/forms-test.ts
index 43b2863..274f039 100644
--- a/test/manual/forms-test.ts
+++ b/test/manual/forms-test.ts
@@ -1,4 +1,4 @@
-import { createDaemonTransport } from "../../src/cdp/daemon-transport";
+import { createDaemonTransport } from "../../src/daemon/transport";
 import { createBrowserClient } from "../../src/client";
 import { fillTool, selectOptionTool, setCheckedTool } from "../../src/domains/form";
 import { fillFormTool } from "../../src/domains/form-batch";
diff --git a/test/manual/live-daemon-test.ts b/test/manual/live-daemon-test.ts
index 28ec7cd..5334cbc 100644
--- a/test/manual/live-daemon-test.ts
+++ b/test/manual/live-daemon-test.ts
@@ -1,4 +1,4 @@
-import { createDaemonTransport } from "../../src/cdp/daemon-transport";
+import { createDaemonTransport } from "../../src/daemon/transport";
 
 async function main() {
   const t = createDaemonTransport("pi-live-test");
diff --git a/test/manual/profile-concurrency-test.ts b/test/manual/profile-concurrency-test.ts
index 43cb880..83b233d 100644
--- a/test/manual/profile-concurrency-test.ts
+++ b/test/manual/profile-concurrency-test.ts
@@ -3,7 +3,7 @@ import { existsSync, mkdtempSync, rmSync } from "node:fs";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { createBrowserClient } from "../../src/client";
-import { createDaemonTransport } from "../../src/cdp/daemon-transport";
+import { createDaemonTransport } from "../../src/daemon/transport";
 import { isDaemonRunning, spawnDaemon } from "../../src/daemon/spawn";
 import { closeIsolatedTab, openIsolatedTab } from "../../src/domains/isolated-tab";