initial commit — cassandra v0.1

Containerised macro-strategy dashboard: 4-panel web UI (indicators,
portfolio, flash news, AI strategic log), MariaDB store, hourly
ingestion jobs, OpenRouter-backed AI analysis.

Ports the four prototype scripts in the parent dir (market_pulse,
flash_news, trading212, strategic_log) into async services backed by a
persistent DB and served via FastAPI + Jinja2 + HTMX. APScheduler runs
as a separate compose service for crash-safety and easier restarts.

Portfolio composition + position names come live from Trading 212;
news per-ticker headlines reuse those names. Tone (NOVICE/INTERMEDIATE/
PRO) and analysis style (DRY/SPECULATIVE) are env-configurable and
stored on each log row so historical entries show what produced them.

Default model is deepseek/deepseek-v4-flash (overridable via env).
Light/dark theme toggle, sans-serif for prose surfaces, monospace for
data. Bearer-token auth, OpenRouter monthly cost cap, RSS feeds auto-
disabled on consecutive failures.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Dockerfile

@@ -0,0 +1,34 @@
+# syntax=docker/dockerfile:1.7
+FROM python:3.13-slim AS builder
+
+ENV PIP_DISABLE_PIP_VERSION_CHECK=1 \
+    PIP_NO_CACHE_DIR=1 \
+    PYTHONDONTWRITEBYTECODE=1
+
+WORKDIR /build
+COPY pyproject.toml ./
+COPY app ./app
+RUN python -m venv /opt/venv \
+ && /opt/venv/bin/pip install --upgrade pip \
+ && /opt/venv/bin/pip install .
+
+FROM python:3.13-slim AS runtime
+
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
+    PATH="/opt/venv/bin:$PATH" \
+    TZ=UTC
+
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends curl \
+ && rm -rf /var/lib/apt/lists/*
+
+COPY --from=builder /opt/venv /opt/venv
+WORKDIR /app
+COPY app ./app
+COPY alembic ./alembic
+COPY alembic.ini ./
+
+# Default command is the web app; scheduler container overrides via `command:`.
+EXPOSE 8000
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1"]