fix macOS PTY: cmsghdr layout, signing, sandbox removal

macOS cmsghdr uses socklen_t (4 bytes) for cmsg_len, not size_t
(8 bytes like Linux). The Dart FFI struct was reading at wrong offsets
causing SCM_RIGHTS fd transfer to fail. Added CmsghdrDarwin with
Uint32 cmsg_len alongside the existing Linux layout.

SOL_SOCKET is 0xffff on macOS (was hardcoded to 1 for Linux).
Now platform-detected.

Switched from ad-hoc to Apple Development signing with team ID.
Removed app sandbox from entitlements — proper signing makes it
unnecessary. All SBPL hacks eliminated.

PtySession.spawn() runs recvFd in a child isolate to avoid blocking
the backend isolate's event loop.

Terminal testmode test now passes: pane.spawn via backend isolate
successfully forks and execs the shell.

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

This commit is contained in:

Jeroen Schweitzer

2026-04-26 17:04:22 +02:00

co-authored by

Claude Opus 4.6

parent 45e8132a41

commit 243a92798c

6 changed files with 46 additions and 40 deletions

									
										.pql/pql-plan.json
									
		+1
		-1
	
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				@@ -1,5 +1,5 @@

				{

				  "exported_at": "2026-04-26T13:55:29Z",

				  "exported_at": "2026-04-26T15:04:22Z",

				  "decisions": [

				    {

				      "id": "D-1",