remove dissolved daemon, retire ptyc, fix golden cross-platform

Complete three overdue cleanups discovered during macOS health check:

D-56 daemon dissolution: delete bin/clide.dart, DaemonServer,
and orphaned tests (test/cli/, subprocess_test, in_process_test).
Update stale "clide --daemon" references in i18n catalogs, error
messages, editor_commands, CI scripts, and decision records.

ptyc retirement: delete ptyc/ source tree, PtySession, scm_rights.
Remove from Toolchain resolution, ToolCheck gate, backend
serialization, testmode harness, Makefile, CI, and sandbox
entitlements. PTY spawning uses NativePty (Dart FFI forkpty) since
the terminal was absorbed in-tree. D-5 amended.

Golden tests: wire the existing but never-applied clideGoldenConfig
via flutter_test_config.dart. Disable CI goldens (Skia anti-aliasing
differs between macOS/Linux even with Ahem). Keep platform-keyed
goldens only — goldens/linux/ and goldens/macos/ each run on their
own OS.

Test suite: 826 pass, 0 fail on macOS (was 829 pass, 11 fail).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/src/ipc/server.dart

@@ -1,144 +0,0 @@
-import 'dart:async';
-import 'dart:convert';
-import 'dart:io';
-
-import 'package:clide/src/ipc/envelope.dart';
-
-typedef RequestDispatcher = Future<IpcResponse> Function(IpcRequest request);
-
-/// Default per-request timeout. A handler that doesn't return within
-/// this window gets a `tool_error` response so the connection's read
-/// pipeline isn't blocked indefinitely. Long-running commands (git
-/// pull/push, large pql queries) can override per-command later.
-const Duration _kDefaultRequestTimeout = Duration(seconds: 60);
-
-/// Unix-socket JSON-lines server. Each connection is an independent
-/// bidirectional line-framed stream: client writes requests, daemon
-/// writes responses + events on the same socket.
-class DaemonServer {
-  DaemonServer({
-    required this.socketPath,
-    required this.dispatch,
-    Duration requestTimeout = _kDefaultRequestTimeout,
-  }) : _requestTimeout = requestTimeout;
-
-  final String socketPath;
-  final RequestDispatcher dispatch;
-  final Duration _requestTimeout;
-
-  ServerSocket? _server;
-  final Set<Socket> _clients = {};
-
-  /// Broadcast [event] to every currently-connected client. Sockets
-  /// that error on write are dropped — the client's read side will
-  /// notice the close. Errors are logged so silent event loss is
-  /// debuggable.
-  void broadcast(IpcEvent event) {
-    final line = event.encode();
-    for (final c in List<Socket>.from(_clients)) {
-      try {
-        c.writeln(line);
-      } catch (e) {
-        stderr.writeln('clide daemon: broadcast write failed (${event.subsystem}.${event.kind}): $e');
-        _clients.remove(c);
-      }
-    }
-  }
-
-  Future<void> start() async {
-    final addr = InternetAddress(socketPath, type: InternetAddressType.unix);
-    try {
-      _server = await ServerSocket.bind(addr, 0);
-    } on SocketException {
-      // Either a stale socket from a prior crash, or a live daemon.
-      // Probe by trying to connect — if a live peer answers, refuse
-      // to start so we don't rip its socket out.
-      try {
-        final probe = await Socket.connect(addr, 0).timeout(const Duration(milliseconds: 200));
-        await probe.close();
-        throw StateError('clide daemon already running at $socketPath');
-      } on TimeoutException {
-        // No one answered — proceed to unlink and rebind.
-      } on SocketException {
-        // No one listening — proceed to unlink and rebind.
-      }
-      try {
-        await File(socketPath).delete();
-      } catch (_) {}
-      _server = await ServerSocket.bind(addr, 0);
-    }
-    stderr.writeln('clide daemon listening on $socketPath');
-    _server!.listen(_handleClient, onError: (e) {
-      stderr.writeln('clide daemon accept error: $e');
-    });
-  }
-
-  Future<void> stop() async {
-    for (final c in List<Socket>.from(_clients)) {
-      await c.close();
-    }
-    _clients.clear();
-    await _server?.close();
-    _server = null;
-    try {
-      await File(socketPath).delete();
-    } catch (_) {}
-  }
-
-  void _handleClient(Socket client) {
-    _clients.add(client);
-    client.cast<List<int>>().transform(utf8.decoder).transform(const LineSplitter()).listen(
-          (line) => _handleLine(client, line),
-          onDone: () => _clients.remove(client),
-          onError: (Object e) {
-            stderr.writeln('clide daemon client error: $e');
-            _clients.remove(client);
-          },
-          cancelOnError: true,
-        );
-  }
-
-  Future<void> _handleLine(Socket client, String line) async {
-    if (line.isEmpty) return;
-    IpcMessage? msg;
-    try {
-      msg = IpcMessage.decode(line);
-    } on FormatException catch (e) {
-      stderr.writeln('clide daemon: bad line from client: $e');
-      return;
-    }
-    if (msg is! IpcRequest) return;
-    IpcResponse resp;
-    try {
-      resp = await dispatch(msg).timeout(_requestTimeout);
-    } on TimeoutException {
-      stderr.writeln('clide daemon: dispatch timeout for ${msg.cmd} (${_requestTimeout.inSeconds}s)');
-      resp = IpcResponse.err(
-        id: msg.id,
-        error: IpcError(
-          code: 2,
-          kind: 'tool_error',
-          message: 'request timed out after ${_requestTimeout.inSeconds}s: ${msg.cmd}',
-        ),
-      );
-    } catch (e, st) {
-      stderr.writeln('clide daemon: dispatch error for ${msg.cmd}: $e\n$st');
-      resp = IpcResponse.err(
-        id: msg.id,
-        error: IpcError(
-          code: 2,
-          kind: 'tool_error',
-          message: 'dispatch failed: $e',
-        ),
-      );
-    }
-    try {
-      client.writeln(resp.encode());
-    } catch (e) {
-      // Client disconnected mid-dispatch — drop it so future events
-      // don't try to write to a dead socket.
-      stderr.writeln('clide daemon: response write failed (${msg.cmd}): $e');
-      _clients.remove(client);
-    }
-  }
-}