fc-ttsreader: piper memory 1Gi -> 3Gi to stop OOMKill mid-render

apps/fc-ttsreader/biblical-tts/Dockerfile

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+# FlowerCore biblical-tts — eSpeak-NG-backed TTS for Ancient Greek (grc) and
+# Hebrew (he). Wraps the espeak-ng binary in a small FastAPI app exposing
+# /tts (returns WAV) and /timings (returns word timings via espeak's
+# --pho output). Same shape as fc-speech-align so AiStation can talk to
+# both with one HTTP client pattern.
+FROM python:3.12-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PIP_NO_CACHE_DIR=1
+
+# espeak-ng has built-in support for grc (Ancient Greek) and he (Hebrew).
+# libsndfile1 is for the wav post-processing step.
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+        espeak-ng \
+        libsndfile1 \
+        ca-certificates \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /app
+COPY requirements.txt /app/
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY app.py /app/
+
+RUN useradd --create-home --shell /usr/sbin/nologin --uid 1654 tts
+USER 1654
+
+EXPOSE 10402
+HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
+    CMD python -c "import urllib.request,sys; urllib.request.urlopen('http://127.0.0.1:10402/health',timeout=3); sys.exit(0)" || exit 1
+
+CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "10402", "--workers", "1"]