codeSplitter merge: fm-daw Full.tsx comes out clean as a mix of one side's layout and the other's split cards (#2654) #4138

Split out of #4133, from the same shadow-check merge: PR #2654's merge 17cdbb0 (fm-daw).

What happened. apps/fm-daw/src/ui/Full.tsx: git conflicts on it, and codeSplitter calls it clean, but mixes the branch's single-component layout with main's split cards. It ends up 11 lines off what landed. (#4133 fixed net.ts in the same merge: its new status calls now get both sides' fields.)

Repro. cd apps/codesplitter && bun scripts/shadow.ts --pr 2654 --json (needs git fetch origin refs/pull/2654/head); the Full.tsx row is git-only, off: 11. For a unit case, shadow() on Full.tsx at the merge-base of 17cdbb0^1 and 17cdbb0^2, 17cdbb0^2 (main) and 17cdbb0^1 (branch).

What should happen. When one side restructured a component and the other split it, that's a card, not a clean mix. Or the merge comes out as what landed. Whether this one broke tests on its own isn't known: the two fm-daw failures came from net.ts.

Part of #1141.