An unknown or misspelled platform name yielded an empty set - the file
would be filtered out of every build (link failure at the end of a long
compile) and the subset guard passed vacuously.
- The esp32 arm's ESPHOME_BLE_GATT_CLIENT_COUNT shadowed the unanchored
regex; the pin now searches the USE_RP2 platform block
- The contract states what the wrapper relies on: nonzero from
gatt_disconnect means nothing to tear down, an accepted teardown
always reaches a terminal report
- abort_service_stream() on the wrapper (which owns the latch discipline)
replaces five identical field-poke sequences in the streamer
- The pre-start reuses check_and_log_error_ like the serialized path
- discover_services() sets the requested flag where it sticks instead of
set-then-rollback; deliver_pending_search_() returns void (no caller
reads it); loop()'s IDLE arm folds into the settle arm
- SEARCH_CMPL during a teardown skips the param/count work whose result
is never delivered
- frameworks_for_platforms() in config_helpers derives framework sets
from platform lists; the hub.cpp filter entry is now a named map pinned
by a test against the proxy's platform list
J. Nick Koston