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/kernel/src/backend.dart

@@ -60,7 +60,6 @@ class Backend {
             git: tcData['git'] as String?,
             pql: tcData['pql'] as String?,
             tmux: tcData['tmux'] as String?,
-            ptyc: tcData['ptyc'] as String?,
             shell: tcData['shell'] as String?,
             gitEnv: (tcData['gitEnv'] as Map?)?.cast<String, String>(),
           ));
@@ -86,7 +85,6 @@ class Backend {
             git: tcData['git'] as String?,
             pql: tcData['pql'] as String?,
             tmux: tcData['tmux'] as String?,
-            ptyc: tcData['ptyc'] as String?,
             shell: tcData['shell'] as String?,
             gitEnv: (tcData['gitEnv'] as Map?)?.cast<String, String>(),
           ));

lib/kernel/src/backend_entry.dart

@@ -45,8 +45,8 @@ void backendEntry(BackendBootMessage boot) {
   late Toolchain toolchain;
 
   // Phase 1: resolve toolchain — just find binaries, don't init services.
-  // We need a project root for ptyc/dugite paths. Use a sensible
-  // default; the real project comes from project.open.
+  // We need a project root for dugite paths. Use a sensible default;
+  // the real project comes from project.open.
   final resolveRoot = boot.hintRoot ?? Platform.environment['HOME'] ?? '/tmp';
   toolchain = Toolchain();
   toolchain.applyResolved(resolveToolchainPaths(resolveRoot));
@@ -78,7 +78,7 @@ void backendEntry(BackendBootMessage boot) {
       final workDir = Directory(projectPath);
 
       // Re-resolve toolchain with the actual project root (finds
-      // dugite in native/dugite/, ptyc in ptyc/bin/, etc.)
+      // dugite in native/dugite/, etc.)
       toolchain = Toolchain();
       toolchain.applyResolved(resolveToolchainPaths(projectPath));
 
@@ -138,7 +138,6 @@ Map<String, Object?> _serializeToolchain(Toolchain tc) => {
       'git': tc.git,
       'pql': tc.pql,
       'tmux': tc.tmux,
-      'ptyc': tc.ptyc,
       'shell': tc.shell,
       'gitEnv': tc.gitEnv,
       'missing': tc.missing,

lib/kernel/src/i18n/catalog/builtin.ipc-status_en_us.json

@@ -1,6 +1,6 @@
 {
   "connected": { "translation": "connected" },
-  "connected.hint": { "translation": "clide daemon is reachable over the local socket" },
+  "connected.hint": { "translation": "backend isolate is reachable" },
   "disconnected": { "translation": "disconnected" },
-  "disconnected.hint": { "translation": "clide daemon is not running — start it with `clide --daemon`" }
+  "disconnected.hint": { "translation": "backend isolate is not running" }
 }

lib/kernel/src/i18n/catalog/builtin.terminal_en_us.json

@@ -3,5 +3,5 @@
   "subtitle.spawning": { "translation": "spawning shell…" },
   "subtitle.exited": { "translation": "Shell exited." },
   "error.unavailable": { "translation": "Terminal unavailable" },
-  "error.daemon": { "translation": "Daemon not connected. Start `clide --daemon`." }
+  "error.daemon": { "translation": "Backend not connected." }
 }

lib/kernel/src/ipc/client.dart

@@ -58,7 +58,6 @@ class DaemonClient extends ChangeNotifier {
           code: IpcExitCode.toolError,
           kind: IpcErrorKind.toolError,
           message: 'daemon not connected',
-          hint: 'is `clide --daemon` running?',
         ),
       ));
     }

lib/kernel/src/tool_check.dart

@@ -5,16 +5,14 @@ import 'package:flutter/foundation.dart';
 import '../../src/pty/env.dart';
 
 class ToolCheck extends ChangeNotifier {
-  bool ptycOk = false;
   bool pqlOk = false;
   bool tmuxOk = false;
   bool gitOk = false;
   bool checked = false;
 
-  bool get allOk => ptycOk && pqlOk && tmuxOk && gitOk;
+  bool get allOk => pqlOk && tmuxOk && gitOk;
 
   List<String> get errors => [
-        if (!ptycOk) 'ptyc not found',
         if (!pqlOk) 'pql not found',
         if (!tmuxOk) 'tmux not found',
         if (!gitOk) 'git not found',
@@ -24,12 +22,6 @@ class ToolCheck extends ChangeNotifier {
   static String? workspaceRoot;
 
   Future<void> check() async {
-    final root = workspaceRoot ?? Directory.current.path;
-    ptycOk = File('$root/native/linux-x64/ptyc').existsSync() ||
-        File('$root/native/macos-arm64/ptyc').existsSync() ||
-        File('$root/native/macos-x64/ptyc').existsSync() ||
-        File('$root/ptyc/bin/ptyc').existsSync() ||
-        _existsOnPath('ptyc');
     pqlOk = _existsOnPath('pql');
     tmuxOk = _existsOnPath('tmux');
     gitOk = _existsOnPath('git');

lib/kernel/src/toolchain.dart

@@ -16,7 +16,6 @@ class ResolvedPaths {
     this.git,
     this.pql,
     this.tmux,
-    this.ptyc,
     this.shell,
     this.gitEnv,
   });
@@ -24,7 +23,6 @@ class ResolvedPaths {
   final String? git;
   final String? pql;
   final String? tmux;
-  final String? ptyc;
   final String? shell;
   final Map<String, String>? gitEnv;
 }
@@ -33,7 +31,6 @@ class Toolchain extends ChangeNotifier {
   String? _git;
   String? _pql;
   String? _tmux;
-  String? _ptyc;
   String? _shell;
   Map<String, String>? _gitEnv;
   bool _resolved = false;
@@ -41,7 +38,6 @@ class Toolchain extends ChangeNotifier {
   String get git => _git ?? 'git';
   String get pql => _pql ?? 'pql';
   String get tmux => _tmux ?? 'tmux';
-  String get ptyc => _ptyc ?? 'ptyc';
   String get shell => _shell ?? '/bin/bash';
 
   /// Extra environment variables for git (e.g. GIT_EXEC_PATH for dugite).
@@ -76,7 +72,6 @@ class Toolchain extends ChangeNotifier {
     _git = p.git;
     _pql = p.pql;
     _tmux = p.tmux;
-    _ptyc = p.ptyc;
     _shell = p.shell;
     _gitEnv = p.gitEnv;
     _resolved = true;
@@ -106,20 +101,10 @@ class Toolchain extends ChangeNotifier {
     final tmux = _findOnPath('tmux');
     final shell = _findOnPath(Platform.environment['SHELL']?.split('/').last ?? 'bash');
 
-    final ptyc = _firstExisting([
-          '$workspaceRoot/ptyc/bin/ptyc',
-          '$workspaceRoot/native/linux-x64/ptyc',
-          '$workspaceRoot/native/macos-arm64/ptyc',
-          '$workspaceRoot/native/macos-x64/ptyc',
-          if (Platform.environment['HOME'] case final home?) '$home/.local/bin/ptyc',
-        ]) ??
-        _findOnPath('ptyc');
-
     return ResolvedPaths(
       git: git,
       pql: pql,
       tmux: tmux,
-      ptyc: ptyc,
       shell: shell,
       gitEnv: gitEnv,
     );
@@ -182,14 +167,6 @@ ResolvedPaths resolveToolchainPaths(String workspaceRoot) {
     git: git,
     pql: _findOnPathStandalone('pql'),
     tmux: _findOnPathStandalone('tmux'),
-    ptyc: _firstExistingStandalone([
-          '$workspaceRoot/ptyc/bin/ptyc',
-          '$workspaceRoot/native/linux-x64/ptyc',
-          '$workspaceRoot/native/macos-arm64/ptyc',
-          '$workspaceRoot/native/macos-x64/ptyc',
-          if (Platform.environment['HOME'] case final home?) '$home/.local/bin/ptyc',
-        ]) ??
-        _findOnPathStandalone('ptyc'),
     shell: _findOnPathStandalone(Platform.environment['SHELL']?.split('/').last ?? 'bash'),
     gitEnv: gitEnv,
   );