Follow-up: #5393 needs rebase onto post-#5406 link/mod.rs split; #5314 has a failing cargo-test

[proggeramlug]

Two main-targeting PRs couldn't be merged during the post-#5402 / CI-speedup sweep and need author action so they're not lost.

#5393 — fix(compile): Windows global fetch links real stdlib impl (#5000); notificationSend links UI lib (#5283)

Needs a rebase onto post-#5406 main. #5406 split crates/perry/src/commands/compile/link/mod.rs — the ~1770-line build_and_run_link orchestrator moved to a sibling link/build_and_run.rs. #5393 predates that split and edits the old inline copy, so rebasing produces an ~1800-line structural conflict (the whole function). Resolving it blindly risks miscompiling the Windows link path, so it was left for the author.

Action: rebase fix/windows-fetch-stub-link onto current main and re-apply the Windows fetch / notificationSend linking changes to link/build_and_run.rs (and drop the version-bump / CHANGELOG edits — the maintainer bumps at merge).

#5314 — Add shared HIR value type inference spine

Real cargo-test failure (not a stale/timeout flake): its fast-path cargo-test fails on current main. Needs the author to investigate the failing test(s) and push a fix.

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For reference, the related CI-speedup work that changed the landscape: per-PR cargo-test is now scoped + unit-only (~5 min); link/mod.rs was split in #5406; full suite runs nightly / on tags. Both PRs above just need a refresh against current main.