https://gitlab.synchro.net/main/sbbs/-/commit/02259da7fd489d53a2b8bca7
Modified Files:
src/syncterm/scripts/load/wrentest.wren src/syncterm/wren_bind.c wren_host.c wren_host_internal.h
Log Message:
SyncTERM: Wren foreign-type tags + output-dispatch re-entry fix

Three related changes shaken out by the wrentest suite:

* Tag every wren_* foreign struct with a leading
`enum syncterm_wren_foreign type` so foreign-method bodies can
identify which foreign they hold (wrenGetSlotType only reports
WREN_TYPE_FOREIGN, not the class). `slot_foreign_type()` reads
the tag; `fn_Screen_writeRect` uses it to fast-path a Cells
argument straight to ciolib_vmem_puttext with no copy or
iteration, while still accepting a List of Cell.

* Guard against wrenCall re-entry from inside fn_Conn_send /
fn_Conn_sendRaw. Calling wrenCall while a foreign method is on
the stack resets vm->fiber->stackTop (wren_vm.c:1464) and
corrupts the outer fiber, producing unbounded recursion or
SIGSEGV. fn_Conn_send now brackets conn_send with
state.output_dispatching++/--, so wren_host_dispatch_output
short-circuits for sends that originated inside Wren. C-side
conn_send (terminal responses, modem keepalives) still fires
hooks normally.

* Drop wren_cell.parent (a raw pointer to a sibling Cells'
foreign data, valid only as long as the Cells stayed in slot 0)
and replace with parent_buf Ä the malloc'd vmem_cell buffer
pointer captured at view creation, kept alive by the existing
parent_handle pin. No raw foreign-data pointer held across VM
calls, no scratch slot needed for cell_data().

Plus test fixes in wrentest.wren: rect-roundtrip uses the natural
readRect  mutate  writeRect(cells) shape; sentinel filter key
0xFFFF -> 0xFE00 (ciolib's ungetch / rip_getch reassembly only
re-composes a 16-bit key when the low byte is 0x00 or 0xe0); new
T05 step issues `sleep 1 && printf` so the Hook.every wall-clock
assertion is no longer racy on local PTYs.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
---
þ Synchronet þ Vertrauen þ Home of Synchronet þ [vert/cvs/bbs].synchro.net