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feat(ota): adopt unified bb_ota_hooks + bb_ota_led + display quiesce; re-pin breadboard v0.58.0 (#522)

* fix(ota): restore the LED to its steady state on a failed OTA (consume bb_ota_led)

A failed/aborted OTA (e.g. a board-mismatch push reject) left the status LED
latched on the fail color forever while the miner kept running (only SUCCESS
reboots) -- the device looked bricked though it was still mining. Replace the
hand-rolled tm_ota_progress_led with breadboard bb_ota_led, which guarantees the
`restore` action runs on every terminal-non-reboot outcome. TM supplies rendering
(updating=blink, success=green, restore=mining heartbeat); breadboard owns the
revert contract. Board-agnostic -- fixes the latch on every TM miner.

Requires breadboard bb_ota_led (re-pin once released).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* feat(ota): quiesce mining + display during OTA transfers (B1-251 consumer)

Wire tm_ota_pause/tm_ota_resume into the bb_ota_push/pull hooks: pause mining AND
blank the display (go dark) for the transfer, resume both after. The display status
task skips its ~20Hz blits while quiesced (frees the SPI bus), and the panel is
turned off via the new bb_display_on/off pair. The update-check hook stays
mining-only (fires every poll; would flicker the display). The consumer decides
what to pause; bb_ota_push just moved the hook before the erase.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* feat(ota): adopt unified bb_ota_hooks + tune no-PSRAM pull chunk; re-pin v0.58.0

- main.c: collapse the per-path OTA wiring to the unified set-once hooks
  (bb_ota_set_hooks / _progress_cb / _skip_check_cb) from breadboard's
  bb_ota_hooks; drop the removed bb_ota_{pull,push,boot}_set_* calls
- src/CMakeLists.txt: REQUIRES bb_ota_hooks
- sdkconfig esp32-wroom32 + esp32-c3-supermini: CONFIG_BB_OTA_PULL_HTTP_CHUNK_SIZE=2048
  (no-PSRAM in-place pull — survives heap fragmentation under concurrent load)
- re-pin breadboard v0.56.0... (continued)

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