Create standalone leddy-stm32 repository and complete hardware validation

[ORESoftware]

Goal

Create public led-dynamo/leddy-stm32, extract the merged STM32Cube HAL implementation from leddy-arduino/src/ports/stm32cube, and validate it on a Nucleo F446RE plus a real LED fixture.

Acceptance criteria

• public led-dynamo/leddy-stm32 repository exists with standard org governance files
• STM32Cube HAL firmware builds for nucleo_f446re
• shared embedded capability/frame-planning layer and host tests are preserved
• device hello advertises platform=stm32 and only configured transports
• board clock, matrix-present, and telemetry hooks have a documented reference implementation
• hardware-in-loop test covers boot, configure, show, clear, telemetry, reconnect, watchdog, and brownout recovery
• pin map and power-budget documentation is published
• CI runs native tests and STM32Cube compilation
• leddy-monorepo, organization docs, and Linear links are updated

Publication readiness

leddy-arduino PR #3 provides deterministic standalone-tree extraction:

bash scripts/extract-controller-repo.sh stm32 /tmp/leddy-stm32

PR #4 adds reproducible leddy-stm32.tar.gz generation, SHA-256 sidecars, and controller-artifacts.json, with CI requiring byte-identical repeated packaging.

PR #5 is now merged and adds the network-ready publisher:

export GH_TOKEN='...'
bash scripts/publish-controller-repos.sh stm32

The publisher creates the missing public org repository through GitHub REST, publishes the extracted tree, initializes main and dev, keeps the PAT environment-only, and refuses to overwrite a repository that already contains branches. All five PR #5 CI jobs passed.

The replacement PAT was exercised against this path from the current runtime. It fails before authentication at DNS resolution (curl: (6) Could not resolve host: api.github.com), confirming the remaining publication blocker is outbound network reachability. Physical Nucleo/HUB75 validation remains a separate acceptance gate after repository publication.

Existing implementation

• Firmware PR: Add native ESP32-S3 and STM32 controller ports leddy-arduino#1
• Extraction PR: Package ESP32 and STM32 standalone repository trees leddy-arduino#3
• Reproducible artifacts PR: Package reproducible controller release artifacts leddy-arduino#4
• PAT publisher PR: Add PAT-based standalone repo publisher leddy-arduino#5
• Protocol PR: Advertise controller platforms and transports leddy-interfaces#1
• E2E PR: Test ESP32 and STM32 device capability events leddy-e2e#1
• Org project: https://github.com/orgs/led-dynamo/projects/1
• Linear project: https://linear.app/denman/project/githubcomled-dynamo-bd51986e8494