dangernoodle-io / breadboard / 29302802296

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refactor: delete bb_info and its 4 satellites (B1-893) (#856)

Field-consumer audit established every field bb_info emitted was either an
existing duplicate elsewhere or had zero producer and zero consumer.
/api/info has no consumer; TaipanMiner and bbdevice's dependence on it is an
accepted breaking cost (both are pending rewrites/overhauls).

- delete components/bb_info, bb_ntp_info, bb_led_info, bb_tls_info,
  bb_display_info + their platform/{espidf,host}/ dirs and tests
- re-home bb_display_info's health.display bb_cache key + SSE topic + the
  CONFIG_BB_DISPLAY_INFO_AUTO_ATTACH gate into bb_display itself -- that
  surface is independent of bb_info and stays live; only the /api/info
  "display" section died with the satellite. The AUTO_ATTACH Kconfig symbol
  name is kept verbatim on relocation so the di_legacy fence sees a pure
  move (0 new markers), not a new marker
- relocate bb_info's dead (never-wired), inert v2 wire descriptor into
  test/test_host/ as a bb_info-independent generic bb_serialize worked
  example fixture, so the unrelated bb_serialize_meta/bb_serialize_json
  test suites keep their golden coverage
- drop bb_pub_telemetry's phantom bb_info PRIV_REQUIRES (zero call sites)
- restore coverage lost when bb_info_build.c was the only caller of some
  bb_board/bb_ntp/bb_system host-stub accessors, with direct unit tests
- regenerate components/README.md and the smoke composition root; shrink
  bbtool.toml's capability/board manifests accordingly
- shrink-prune the new_component fence baseline and the coverage baseline
  for the removed files

8085 of 8838 branches covered (91.48%)

Branch coverage included in aggregate %.

4 of 4 new or added lines in 1 file covered. (100.0%)

13748 of 14114 relevant lines covered (97.41%)

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