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>

config/portfolio.toml

@@ -0,0 +1,18 @@
+# Portfolio config — optional user-specific overrides on top of default.toml.
+#
+# As of v0.2 the portfolio composition (the "pie") is sourced live from the
+# Trading 212 /equity/portfolio endpoint, not from this file. The portfolio_job
+# also calls /equity/metadata/instruments to attach human-readable names. Once
+# portfolio_job has run, the dashboard's Portfolio panel shows the live
+# composition and the news_job uses those tickers for per-ticker headlines.
+#
+# This file is still loaded — anything you add here overlays default.toml.
+# Use it for:
+#   - extra indicator groups (e.g. a "crypto" or "watchlist" group):
+#       [groups]
+#       crypto = [
+#           {symbol="BTC-USD", label="Bitcoin",  note=""},
+#           {symbol="ETH-USD", label="Ethereum", note=""},
+#       ]
+#   - replacing universal groups from default.toml (same key wins)
+#   - adding portfolio-specific RSS feeds or keyword presets