Opus dual-lens review of cb6502c8 passed with six findings; this lands
the fix round:
1. headless-portability.yml: AcDream.Platform src/tests join both path
triggers and the presentation-free build/test arrays — the moved XDG
tests run on ubuntu-latest again (they had fallen out of every Linux
lane).
2. acdream-architecture.md: AcDream.Platform gets its own layer block;
Runtime may-reference clause updated (the guard changed in cb6502c8,
its human-readable twin had not).
3. PlatformDependencyBoundaryTests: the BCL-only contract (zero
project/package references) is now enforced, not just observed.
4. memory/project_linux_graphical.md canonical seam renamed.
5. Plan LA0 recon corrected: the K0 Headless guard was never the guard
needing amendment (it asserts Headless own refs); Runtime own-refs
guard was — the commit did the right thing, the plan text now says so.
6. App declares its AcDream.Platform reference explicitly per its own
convention instead of riding transitivity.
Platform.Tests: 4 passed (3 moved + the new guard).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
