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/clide.dart

@@ -1,8 +1,5 @@
 /// clide — Dart core library.
 ///
-/// Shared by `bin/clide.dart` (CLI + daemon) and by the Flutter app
-/// under `app/` (which depends on this package via `path: ../`).
-///
 /// See:
 ///   * `decisions/architecture.md` `D-005` — layout + language rationale.
 ///   * `decisions/architecture.md` `D-006` — CLI + event contract.
@@ -10,11 +7,10 @@ library;
 
 // Flutter-app-visible surface. Deliberately **does not** export the
 // `pty/` or `panes/registry.dart` modules — those import `dart:ffi`
-// and pull in the PTY machinery that only runs on desktop. The
-// daemon entrypoint (`bin/clide.dart`) imports them via deep paths.
+// and pull in the PTY machinery that only runs on desktop.
 //
 // `Pane` + `PaneKind` + the event-sink interfaces travel here because
-// they're pure data types that both the app and the daemon reference.
+// they're pure data types referenced throughout the app.
 
 export 'src/daemon/dispatcher.dart';
 export 'src/editor/buffer.dart';
@@ -28,15 +24,14 @@ export 'src/pql/client.dart' show PqlClient, PqlException;
 export 'src/ipc/envelope.dart';
 export 'src/ipc/paths.dart';
 export 'src/ipc/schema_v1.dart';
-export 'src/ipc/server.dart';
 export 'src/panes/event_sink.dart';
 export 'src/panes/pane.dart' show Pane, PaneKind;
 
 /// Build-time-stamped version string.
 ///
-/// The Makefile's `build` target passes `--define=clideVersion=…` when
-/// invoking `dart compile exe`, stamping `project.yaml`'s `version:`
-/// plus the git short SHA and dirty marker.
+/// The Makefile's `build` target passes `--define=clideVersion=…`,
+/// stamping `pubspec.yaml`'s `version:` plus the git short SHA and
+/// dirty marker.
 const clideVersion = String.fromEnvironment(
   'clideVersion',
   defaultValue: '2.0.0-dev',