dangernoodle-io / TaipanMiner / 25244005672

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fix(build): bootstrap partitions.bin in pre-script so first build embeds real partition table (#301)

embed_partitions.py runs as a `pre:` script, before the ESP-IDF build
generates partitions.bin. on the first clean build the bin didn't exist
yet, so the script wrote a stub (len=1) that compilation baked into
firmware. partition_fixup_decide() returns SKIP_NO_TABLE for len<=1, which
silently disabled the WROOM-32 4MB layout-correction path on factory
installs. CI builds each env once via `make build-<env>`, so releases
were affected — only worked in practice because dev builds ran twice and
because devices already on the correct partition layout don't need fixup.

- if partitions.bin doesn't exist, generate it synchronously from the
  env's `board_build.partitions` CSV via ESP-IDF's gen_esp32part.py
  (located via env.PioPlatform().get_package_dir("framework-espidf"))
- bootstrap output matches what the actual build produces (verified
  byte-for-byte on tdongle-s3 + esp32-wroom32)
- early-return for native env to avoid spurious BoardConfig errors and
  unnecessary .pio/build/native/ side-effects
- fall back to the stub path only if CSV/gen tool unavailable

bench-verified parallel `pio run -e tdongle-s3 -e esp32-wroom32 ... -e
bitaxe-650` from clean state — all 5 envs ship 3072-byte real data;
475 host tests pass; cppcheck clean; OTA push to tdongle clean (220 kH/s
stable, 0 rejected).

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

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