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samiandClaude Opus 5 9624e685af docs: cmake/platform.cmake belongs to PKG/QA, not PORT (ADR 0020 amendment)
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As written, ADR 0020 gave PORT ownership of cmake/platform*.cmake while also
making PORT wait for Phase 0 — but Phase 0's seams are exactly what needs
velox_platform_sources() to select platform/linux/*.cpp. PORT cannot start until
Phase 0 lands, and Phase 0 cannot land without the file PORT owns. PKG/QA caught
the circularity before writing anything, which was the right call.

Central OS detection is root build infrastructure, so it stays with PKG/QA and
lands during Phase 0. PORT keeps the per-OS backend directories and the macOS
and Windows packaging, and owns no part of cmake/.

Also drops a hardcoded test count from the PORT definition of done; the suite
number moves every round and the gate is that it stays green.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-15 17:46:48 +04:00
samiandClaude Opus 5 facd851824 docs: define the cross-platform porting strategy (ADR 0020, macOS first)
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The tree is Ubuntu-first, but the Linux-specific surface is about ten files and
already sits at the bottom of the I/O and RPC stacks. Rather than fork the repo
or scatter ifdefs, platform differences go behind narrow seams with one backend
directory per OS, selected centrally in cmake/platform.cmake.

Linux stays the reference implementation and its behaviour does not change: the
owning lanes (CORE, DAEMON) move today's Linux code behind the seams on Ubuntu
first, with the suite still green, before any macOS code exists. A new PORT lane
owns only the per-OS backends, so macOS work never writes shared logic and
CLAUDE.md's lane rule stays intact.

Adds ADR 0020 (the decision and phases), docs/08-porting.md (seam list, API
mapping for macOS and Windows, dependency table, verification gates) and
docs/agents/AGENT-PORT.md (the lane brief), plus the PORT row in the ownership
table.

Co-Authored-By: Claude Opus 5 <[email protected]>
2026-09-15 17:36:27 +04:00