istrain-public: from-scratch build of a passive RF train detector

Public community release. The complete working system — DSP + decoders (scripts/),
web dashboard + API (dashboard/), container stack (docker/), config templates (config/) —
plus APOCALYPSE-EDITION.md, the full build guide for a human or a coding agent. GPLv3
(PyEOT dependency). Scrubbed of all secrets, internal IPs, hostnames, and location detail.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docker/worker.Dockerfile

@@ -0,0 +1,8 @@
+# istrain worker — transcribe-worker (ffmpeg comms-filter + POST to local whisper) and the
+# dsp-base image: numpy is here so `iq_hop.py --selftest` / `iq_channelize.py --selftest` can run
+# in-container (the acceptance rail that pre-proves the 1001 port before that dongle ever moves).
+FROM python:3.12-slim
+RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg \
+    && rm -rf /var/lib/apt/lists/* \
+    && pip install --no-cache-dir numpy
+CMD ["python3", "/app/scripts/transcribe-worker.py"]