Resolved add/add conflict in the top-level firmware README: both I and J
created one (J's brief said "create it if I hasn't", and both ran in
isolated worktrees with no visibility into each other). Combined them —
kept I's comprehensive core-project README as the base, appended J's real
RTL-SDR technical section, dropped J's now-stale "Status of this
directory" preamble (written when it couldn't see I's already-completed
work) and its duplicate honesty-policy note. Updated the stale
components/README.md placeholder to reflect that the module now exists.
f87e9ab3f5