1@README.md 2 3- **A new first-party buck package must be added to `PACKAGES` in 4 [BUCK](BUCK),** or it gets no manifest and `:committed` never looks for 5 one. Buck cannot enumerate packages from inside a build, so that list is 6 the one hand-kept input. 7- **The pgrx pin and `panic = "unwind"` profiles are written here, not 8 copied by hand.** Cancellation unwinds through the extension; a manifest 9 that lost `panic = "unwind"` would abort the backend on Ctrl-C under cargo. 10- **The tools' invariants are one folder up**, in `tools/CLAUDE.md`.