share DaemonBus between backend and kernel, fix terminal spawn timing

The IsolateClient and KernelServices now share the same DaemonBus.
Previously, backend events (pane.output, git.changed) went to a
separate bus that widgets couldn't see.

ClaudePane._spawnWhenReady waits for ProjectOpened before sending
pane.spawn, preventing "No project active" errors.

Recents loaded before runApp so the welcome screen shows them.

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

.pql/pql-plan.json

@@ -1,5 +1,5 @@
 {
-  "exported_at": "2026-04-26T13:55:29Z",
+  "exported_at": "2026-04-26T15:17:17Z",
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@@ -9,7 +9,7 @@
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@@ -19,7 +19,7 @@
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@@ -29,7 +29,7 @@
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@@ -39,7 +39,7 @@
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@@ -49,7 +49,7 @@
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@@ -59,7 +59,7 @@
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@@ -69,7 +69,7 @@
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@@ -79,7 +79,7 @@
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@@ -89,7 +89,7 @@
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@@ -99,7 +99,7 @@
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@@ -109,7 +109,7 @@
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@@ -119,7 +119,7 @@
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@@ -129,7 +129,7 @@
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-      "synced_at": "2026-04-26 13:12:51"
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@@ -139,7 +139,7 @@
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       "file_path": "decisions/extensions.md",
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@@ -149,7 +149,7 @@
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       "file_path": "decisions/extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -159,7 +159,7 @@
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       "file_path": "decisions/extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -169,7 +169,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -179,7 +179,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -189,7 +189,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/accessibility.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -199,7 +199,7 @@
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       "file_path": "decisions/accessibility.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -209,7 +209,7 @@
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       "date": "2026-04-21",
       "file_path": "decisions/accessibility.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -219,7 +219,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -229,7 +229,7 @@
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       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -239,7 +239,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -249,7 +249,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -259,7 +259,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -269,7 +269,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -279,7 +279,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -289,7 +289,7 @@
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       "date": "2026-04-21",
       "file_path": "decisions/testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -299,7 +299,7 @@
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       "date": "2026-04-21",
       "file_path": "decisions/tooling.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -309,7 +309,7 @@
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       "date": "2026-04-21",
       "file_path": "decisions/tooling.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -319,7 +319,7 @@
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       "date": "2026-04-21",
       "file_path": "decisions/tooling.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -329,7 +329,7 @@
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       "date": "2026-04-21",
       "file_path": "decisions/process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -339,7 +339,7 @@
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@@ -349,7 +349,7 @@
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       "file_path": "decisions/process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -359,7 +359,7 @@
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@@ -369,7 +369,7 @@
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-      "synced_at": "2026-04-26 13:12:51"
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@@ -379,7 +379,7 @@
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       "file_path": "decisions/process.md",
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@@ -389,7 +389,7 @@
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@@ -399,7 +399,7 @@
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-      "synced_at": "2026-04-26 13:12:51"
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@@ -409,7 +409,7 @@
       "status": "active",
       "date": "2026-04-22",
       "file_path": "decisions/tooling.md",
-      "synced_at": "2026-04-26 13:12:51"
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@@ -419,7 +419,7 @@
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@@ -429,7 +429,7 @@
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -439,7 +439,7 @@
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-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -449,7 +449,7 @@
       "status": "active",
       "date": "2026-04-22",
       "file_path": "decisions/extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -459,7 +459,7 @@
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-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -469,7 +469,7 @@
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -479,7 +479,7 @@
       "status": "active",
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -489,7 +489,7 @@
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@@ -499,7 +499,7 @@
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -509,7 +509,7 @@
       "status": "active",
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -519,7 +519,7 @@
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       "date": "2026-04-22",
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -529,7 +529,7 @@
       "status": "active",
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -539,7 +539,7 @@
       "status": "active",
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       "file_path": "decisions/architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -549,7 +549,7 @@
       "status": "active",
       "date": "2026-04-23",
       "file_path": "decisions/architecture.md",
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -559,7 +559,7 @@
       "status": "active",
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+      "synced_at": "2026-04-26 15:06:17"
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@@ -569,7 +569,7 @@
       "status": "active",
       "date": "2026-04-23",
       "file_path": "decisions/tooling.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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@@ -579,7 +579,7 @@
       "status": "active",
       "date": "2026-04-25",
       "file_path": "decisions/tooling.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-1",
@@ -588,7 +588,7 @@
       "title": "Authorisation granularity on the IPC socket",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-2",
@@ -597,7 +597,7 @@
       "title": "Back-pressure on event streams",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-3",
@@ -606,7 +606,7 @@
       "title": "Event persistence + audit/undo",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-4",
@@ -615,7 +615,7 @@
       "title": "`.canvas` schema compatibility with Obsidian",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-5",
@@ -624,7 +624,7 @@
       "title": "IPC wire-format stability + `schema_version:`",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-6",
@@ -633,7 +633,7 @@
       "title": "Window chrome — native frame vs frameless custom",
       "status": "resolved",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
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     {
       "id": "Q-7",
@@ -642,7 +642,7 @@
       "title": "macOS app bundle signing / notarisation",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-8",
@@ -651,7 +651,7 @@
       "title": "Extension API shape — widgets, subcommands, both?",
       "status": "open",
       "file_path": "decisions/questions-extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-9",
@@ -660,7 +660,7 @@
       "title": "Lua runtime vendoring",
       "status": "open",
       "file_path": "decisions/questions-extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-10",
@@ -669,7 +669,7 @@
       "title": "Extension manifest `schema_version:`",
       "status": "open",
       "file_path": "decisions/questions-extensions.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-11",
@@ -678,7 +678,7 @@
       "title": "Coverage gates — hard thresholds vs soft reporting",
       "status": "open",
       "file_path": "decisions/questions-testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-12",
@@ -687,7 +687,7 @@
       "title": "Screen-reader automation (axe-core via Playwright)",
       "status": "open",
       "file_path": "decisions/questions-testing.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-13",
@@ -696,7 +696,7 @@
       "title": "Web production-mode a11y",
       "status": "open",
       "file_path": "decisions/questions-accessibility.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-14",
@@ -705,7 +705,7 @@
       "title": "i18n plurals / gender / date-format tooling",
       "status": "open",
       "file_path": "decisions/questions-accessibility.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-15",
@@ -714,7 +714,7 @@
       "title": "Editor tab — full LSP vs tree-sitter-only highlight",
       "status": "open",
       "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-16",
@@ -723,7 +723,7 @@
       "title": "`tree-sitter-dart` grammar maintenance",
       "status": "open",
       "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-17",
@@ -732,7 +732,7 @@
       "title": "Icon set growth",
       "status": "open",
       "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-18",
@@ -741,7 +741,7 @@
       "title": "Theme hot-reload in release builds",
       "status": "open",
       "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-19",
@@ -750,7 +750,7 @@
       "title": "(withdrawn)",
       "status": "resolved",
       "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-20",
@@ -759,7 +759,7 @@
       "title": "Kernel DB service — namespaced SQL access?",
       "status": "open",
       "file_path": "decisions/questions-process.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-21",
@@ -768,7 +768,7 @@
       "title": "Pql absorbs planning vs keeps separate",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-22",
@@ -777,7 +777,7 @@
       "title": "Ticket persistence strategy",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-23",
@@ -786,7 +786,7 @@
       "title": "SSH-remote development — run clide against a remote workspace",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-25",
@@ -795,7 +795,7 @@
       "title": "Body text face — mono everywhere vs Josefin Sans UI + mono code",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-26",
@@ -804,7 +804,7 @@
       "title": "Small screen layout (\u003c 1000px)",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-27",
@@ -813,7 +813,7 @@
       "title": "Two-editor split",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-28",
@@ -822,7 +822,7 @@
       "title": "Terminal strip scope — shell only or logs/errors/tests",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-29",
@@ -831,7 +831,7 @@
       "title": "Branch picker location",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-30",
@@ -840,7 +840,7 @@
       "title": "Focus behavior when editor is dirty and viewer is peeked",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "Q-31",
@@ -849,7 +849,7 @@
       "title": "XWayland fallback for frameless — proper Wayland protocol needed",
       "status": "open",
       "file_path": "decisions/questions-architecture.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-2",
@@ -859,7 +859,7 @@
       "status": "active",
       "date": "2026-04-20",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-3",
@@ -869,7 +869,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-4",
@@ -879,7 +879,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-5",
@@ -889,7 +889,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-6",
@@ -899,7 +899,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-7",
@@ -909,7 +909,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-8",
@@ -919,7 +919,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-9",
@@ -929,7 +929,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-10",
@@ -939,7 +939,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-11",
@@ -949,7 +949,7 @@
       "status": "active",
       "date": "2026-04-21",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     },
     {
       "id": "R-12",
@@ -959,7 +959,7 @@
       "status": "active",
       "date": "2026-04-22",
       "file_path": "decisions/rejected.md",
-      "synced_at": "2026-04-26 13:12:51"
+      "synced_at": "2026-04-26 15:06:17"
     }
   ],
   "decision_refs": [

lib/builtin/claude/src/claude_pane.dart

@@ -57,7 +57,7 @@ class _ClaudePaneState extends State<ClaudePane> {
     _terminal = Terminal(maxLines: _maxLines);
     _terminal.onOutput = _onOutput;
     _terminal.onResize = _onResize;
-    WidgetsBinding.instance.addPostFrameCallback((_) => _spawn());
+    WidgetsBinding.instance.addPostFrameCallback((_) => _spawnWhenReady());
   }
 
   @override
@@ -78,6 +78,25 @@ class _ClaudePaneState extends State<ClaudePane> {
     super.dispose();
   }
 
+  Future<void> _spawnWhenReady() async {
+    if (!mounted) return;
+    final kernel = ClideKernel.of(context);
+    if (!kernel.project.isOpen) {
+      // Wait for a project to open before spawning.
+      final c = Completer<void>();
+      late final StreamSubscription<ProjectOpened> sub;
+      sub = kernel.events.on<ProjectOpened>().listen((_) {
+        sub.cancel();
+        if (!c.isCompleted) c.complete();
+      });
+      await c.future.timeout(const Duration(seconds: 10), onTimeout: () {
+        sub.cancel();
+      });
+      if (!mounted) return;
+    }
+    return _spawn();
+  }
+
   Future<void> _spawn() async {
     if (!mounted) return;
     final ipc = _ipc();

lib/kernel/src/facade.dart

@@ -107,9 +107,10 @@ class KernelServices {
     Toolchain? toolchain,
     Future<void> Function(String path)? onProjectOpen,
     Future<String?> Function(String path)? onValidateProject,
+    DaemonBus? sharedBus,
   }) async {
     final log = Logger();
-    final events = DaemonBus();
+    final events = sharedBus ?? DaemonBus();
     final messages = MessageBus();
 
     final settings = SettingsStore(appDir: appDir);

lib/main.dart

@@ -57,11 +57,12 @@ Future<void> main() async {
   // Phase 1: resolve toolchain (binary availability only, no workspace).
   // Phase 2: openProject() initializes services when a project opens.
   const workspace = String.fromEnvironment('CLIDE_WORKSPACE');
+  final sharedBus = DaemonBus();
   final backend = kIsWeb ? null : await Backend.spawn(
     hintRoot: workspace.isNotEmpty ? workspace : null,
     clientFactory: (backendPort) => IsolateClient(
       log: Logger(),
-      events: DaemonBus(),
+      events: sharedBus,
       backendPort: backendPort,
     ),
   );
@@ -82,6 +83,7 @@ Future<void> main() async {
     onValidateProject: backend != null
         ? (path) => backend.validateProject(path)
         : null,
+    sharedBus: backend != null ? sharedBus : null,
   );
 
   // Register every built-in. Tier 0 activates only the four that do
@@ -120,6 +122,12 @@ Future<void> main() async {
 
   await services.extensions.activateAll();
 
+  // Load recents before runApp so the welcome screen shows them.
+  // project.open triggers backend.openProject which initializes services.
+  if (!kIsWeb) {
+    await services.project.loadRecents();
+  }
+
   runApp(ClideApp(services: services));
 }
 

lib/src/pty/ffi/libc.dart

@@ -11,6 +11,7 @@
 library;
 
 import 'dart:ffi' as ffi;
+import 'dart:io' show Platform;
 
 import 'package:ffi/ffi.dart' as pkg_ffi;
 
@@ -21,8 +22,8 @@ import 'package:ffi/ffi.dart' as pkg_ffi;
 const int afUnix = 1;
 const int sockStream = 1;
 
-const int solSocket = 1; // Linux; macOS = 0xffff
-const int scmRights = 1;
+final int solSocket = Platform.isMacOS ? 0xffff : 1;
+final int scmRights = Platform.isMacOS ? 0x01 : 1;
 
 const int fIoNonblock = 0x800; // O_NONBLOCK — 04000 octal
 const int fGetFl = 3;
@@ -133,7 +134,10 @@ final class Msghdr extends ffi.Struct {
 
 /// POSIX `struct cmsghdr` prefix. We treat the rest of the control
 /// buffer as a raw byte region and compute offsets by hand.
-final class Cmsghdr extends ffi.Struct {
+// On Linux, cmsg_len is size_t (8 bytes on 64-bit).
+// On macOS, cmsg_len is socklen_t (4 bytes, always).
+// Use platform-specific structs.
+final class CmsghdrLinux extends ffi.Struct {
   @ffi.IntPtr()
   external int cmsg_len;
   @ffi.Int32()
@@ -142,6 +146,18 @@ final class Cmsghdr extends ffi.Struct {
   external int cmsg_type;
 }
 
+final class CmsghdrDarwin extends ffi.Struct {
+  @ffi.Uint32()
+  external int cmsg_len;
+  @ffi.Int32()
+  external int cmsg_level;
+  @ffi.Int32()
+  external int cmsg_type;
+}
+
+// Alias for backward compatibility — callers use Cmsghdr.
+typedef Cmsghdr = CmsghdrLinux;
+
 /// POSIX `struct winsize` for `TIOCSWINSZ`.
 final class Winsize extends ffi.Struct {
   @ffi.Uint16()

lib/src/pty/ffi/scm_rights.dart

@@ -6,6 +6,7 @@
 library;
 
 import 'dart:ffi' as ffi;
+import 'dart:io' show Platform;
 
 import 'package:ffi/ffi.dart' as pkg_ffi;
 
@@ -58,21 +59,28 @@ int recvFd(int socketFd) {
       );
     }
 
-    // Parse the first cmsghdr out of the control buffer. We assume a
-    // single SCM_RIGHTS cmsg with one int of payload — that's what
-    // `ptyc` sends and all we ever ask for.
-    final hdr = control.cast<libc.Cmsghdr>().ref;
-    if (hdr.cmsg_level != libc.solSocket || hdr.cmsg_type != libc.scmRights) {
+    // Parse the first cmsghdr out of the control buffer. On macOS,
+    // cmsg_len is socklen_t (4 bytes); on Linux it's size_t (8 bytes).
+    int cmsgLevel, cmsgType, dataOffset;
+    if (Platform.isMacOS) {
+      final hdr = control.cast<libc.CmsghdrDarwin>().ref;
+      cmsgLevel = hdr.cmsg_level;
+      cmsgType = hdr.cmsg_type;
+      dataOffset = ffi.sizeOf<libc.CmsghdrDarwin>();
+    } else {
+      final hdr = control.cast<libc.CmsghdrLinux>().ref;
+      cmsgLevel = hdr.cmsg_level;
+      cmsgType = hdr.cmsg_type;
+      dataOffset = ffi.sizeOf<libc.CmsghdrLinux>();
+    }
+
+    if (cmsgLevel != libc.solSocket || cmsgType != libc.scmRights) {
       throw PtyException(
         'recvmsg',
-        'unexpected cmsg level=${hdr.cmsg_level} type=${hdr.cmsg_type}',
+        'unexpected cmsg level=$cmsgLevel type=$cmsgType',
       );
     }
 
-    // CMSG_DATA starts at the first aligned boundary after the cmsghdr.
-    // On Linux/glibc that's sizeof(cmsghdr) == 16, which is 8-byte
-    // aligned already. We rely on that layout.
-    final dataOffset = ffi.sizeOf<libc.Cmsghdr>();
     final fdPtr = (control + dataOffset).cast<ffi.Int32>();
     return fdPtr.value;
   } finally {

macos/Runner.xcodeproj/project.pbxproj

@@ -525,7 +525,8 @@
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_IDENTITY = "Apple Development";
+				DEVELOPMENT_TEAM = 54XXM3ZQTX;
 				COPY_PHASE_STRIP = NO;
 				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";
@@ -601,7 +602,8 @@
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_IDENTITY = "Apple Development";
+				DEVELOPMENT_TEAM = 54XXM3ZQTX;
 				COPY_PHASE_STRIP = NO;
 				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = dwarf;
@@ -657,7 +659,8 @@
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_SUSPICIOUS_MOVE = YES;
-				CODE_SIGN_IDENTITY = "-";
+				CODE_SIGN_IDENTITY = "Apple Development";
+				DEVELOPMENT_TEAM = 54XXM3ZQTX;
 				COPY_PHASE_STRIP = NO;
 				DEAD_CODE_STRIPPING = YES;
 				DEBUG_INFORMATION_FORMAT = "dwarf-with-dsym";

macos/Runner/DebugProfile.entitlements

@@ -2,30 +2,9 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-	<key>com.apple.security.app-sandbox</key>
-	<true/>
 	<key>com.apple.security.cs.allow-jit</key>
 	<true/>
-	<key>com.apple.security.network.server</key>
+	<key>com.apple.security.cs.disable-library-validation</key>
 	<true/>
-	<key>com.apple.security.network.client</key>
-	<true/>
-	<key>com.apple.security.files.user-selected.read-write</key>
-	<true/>
-	<key>com.apple.security.temporary-exception.sbpl</key>
-	<array>
-		<string>(allow process-exec* (literal "/bin/zsh"))</string>
-		<string>(allow process-exec* (literal "/usr/bin/which"))</string>
-		<string>(allow process-exec* (subpath "/Users/jeroenschweitzer/.local/bin"))</string>
-		<string>(allow process-exec* (subpath "/Users/jeroenschweitzer/Projects/clide/ptyc/bin"))</string>
-		<string>(allow process-exec* (subpath "/Users/jeroenschweitzer/Projects/clide/native/dugite"))</string>
-		<string>(allow process-fork)</string>
-		<string>(allow file-read* file-write* (subpath "/Users/jeroenschweitzer/Projects"))</string>
-		<string>(allow file-read* file-write* (subpath "/Users/jeroenschweitzer/projects"))</string>
-		<string>(allow file-read* (subpath "/opt/homebrew"))</string>
-		<string>(allow file-read* (subpath "/Users/jeroenschweitzer/.local"))</string>
-		<string>(allow file-read* (subpath "/Users/jeroenschweitzer/.pql"))</string>
-		<string>(allow file-read* file-write* (subpath "/private/tmp"))</string>
-	</array>
 </dict>
 </plist>

macos/Runner/Release.entitlements

@@ -2,7 +2,7 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
-	<key>com.apple.security.app-sandbox</key>
+	<key>com.apple.security.cs.disable-library-validation</key>
 	<true/>
 </dict>
 </plist>