src/rooms/ is held by this repository's own rules: four modules, four test files, and one line that says whose the directory is #342

src/rooms/rooms.test.ts became code.test.ts, wire.test.ts, room.test.ts and hub.test.ts, each testing the module it is named for, with the shared fixtures — a room on a fixed map and seed, a busy ten-body round, the other end of the wire, the bytes of one tick of holding W, and a Wire that remembers instead of sending — in src/rooms/stage.test-helper.ts, the way both games hold their stage. No assertion was dropped: the directory went from 21 tests and 457 expect() calls to 24 and 470, the three new tests being the directory's documentation read back. The snapshot measurement still prints its line from wire.test.ts (544 bytes — 8.7 kB/s a member at 16 Hz), which is the argument for the rate.

src/independence.test.ts now says whose src/rooms/ is: ALSO.app gains the directory, so importsAnotherGame("src/rooms/room.ts", "../range/targets.ts") is refused while "../client/world.ts" is allowed, and two new tests read the sources rather than the prose — code.ts and hub.ts import no game at all (the fact the next issue's extraction starts from), and nothing under src/rooms/ imports src/rl/, which the widened ALSO.app would otherwise permit. hub.test.ts holds the docstrings honest: every test file a source here names in backticks exists, and each of the four modules names its own; code.ts gained the sentence naming code.test.ts, which it was the only module missing.

Left alone: src/engine/GUIDE.md, which names no file under src/rooms/ and belongs to #116, and the modules themselves — nothing moved into the engine here. Worth a look: the helper runs useShipped() on import, as the old single file did at its top, so the bots in every rooms test still think with the shipped policy. bun run test (typecheck plus bun test) passes: 1347 tests across 121 files, 0 failures.

🤖 Generated with Claude Code

Closes #320