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>

tests/conftest.py

@@ -0,0 +1,19 @@
+"""Pytest config — no DB / no network. Tests target pure functions only.
+
+Heavy runtime deps (fastapi, httpx, sqlalchemy, pydantic-settings, tenacity)
+are installed inside the container but not necessarily on the host. Tests
+that need them use pytest.importorskip; the full suite runs via
+`docker compose run --rm app pytest tests/`."""
+from __future__ import annotations
+
+import os
+import sys
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parent.parent
+sys.path.insert(0, str(ROOT))
+
+# Sentinel env so importing app.config doesn't try to read a missing .env.
+os.environ.setdefault("DATABASE_URL", "sqlite+aiosqlite:///:memory:")
+os.environ.setdefault("CASSANDRA_MOCK", "1")