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docs: where the effect rows actually execute in CI 

Checked with `cargo metadata`, not assumed: `workspace_default_members`
is the root `pmacs` package alone, so the `test` matrix and
`crdt-test` --- both bare `cargo test --all-targets` --- never compile
pmacs-gpu's unit tests. Only `gpu-render` runs them, and it installs
lavapipe, proves the adapter with vulkaninfo, and sets
PMACS_REQUIRE_GPU=1.

That matters because the harness's adapter assert is UNCONDITIONAL
rather than env-gated: it cannot be turned into a quiet ok anywhere, and
a future job that runs -p pmacs-gpu without an adapter fails loudly
instead of silently covering nothing.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016bqGA6s9tTUFzYpbeW3tai
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Levi Neuwirth 2026-08-12 10:45:44 +02:00
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@ -297,7 +297,18 @@ waits for a signal that is not coming.
the core-count assumption behind PR #235's CI red. the core-count assumption behind PR #235's CI red.
- **The effect rows never skip**: a missing wgpu adapter is an assertion - **The effect rows never skip**: a missing wgpu adapter is an assertion
failure. M21 confirms all **nine** effect rows fail loudly while the failure. M21 confirms all **nine** effect rows fail loudly while the
**thirteen** GPU-free routing rows stay green. **thirteen** GPU-free routing rows stay green. The assert is
**unconditional**, not `PMACS_REQUIRE_GPU`-gated, so no invocation
anywhere can turn a missing adapter into a quiet `ok`.
- **They execute in exactly ONE CI job, and that is checked rather than
assumed.** `cargo metadata` reports `workspace_default_members` as the
root `pmacs` package alone, so the `test` matrix and `crdt-test` —
both bare `cargo test --all-targets` — never compile `pmacs-gpu`'s
unit tests at all. Only **`gpu-render`** runs them, and it installs
lavapipe, proves the adapter with `vulkaninfo`, and sets
`PMACS_REQUIRE_GPU=1`. This is the handoff's "`gpu-render` runs a
DIFFERENT PACKAGE" fact showing up as a dependency: these rows live or
die with that one job.
- **Three manufactured absences, all found by running the rows**, and - **Three manufactured absences, all found by running the rows**, and
each the same shape: the harness withheld something production each the same shape: the harness withheld something production
supplies, then witnessed its own omission. `resumed` sets the frontend supplies, then witnessed its own omission. `resumed` sets the frontend