feat: matrix/graph data views, wire-generated anomalies, http cookie fix

- auth: session cookie Secure only over https — plain-http LAN access was
  silently dropping the cookie, killing WS auth ('connection unstable')
- wire ghost: server-side spike detection on jitter baseline (3σ + 2.5×mean,
  20KB/s floor, 20s throttle) — wire anomalies now flood every session with
  zero hardware, pushed to clients as {type:'anomaly'} frames
- telemetry cadence 3-5s for live graphs; ambient whispers unchanged
- frontend: MATRIX view (data-rain interleaved with live utterances/anomaly/
  telemetry strings), GRAPHS view (scrolling jitter/variance/dns lines +
  anomaly markers + counters), BOARD/MATRIX/GRAPHS switcher
- connection banner: 'connecting' is now neutral 'tuning the veil…', only
  unstable/closed warns
- db: recreated quantumancy(+_test) as UTF8 (was SQL_ASCII — crashed on
  non-ASCII spirit text); README quickstart updated
- i18n: seance.views.* EN/ES

frontend/src/lib/types.ts

@@ -90,6 +90,7 @@ export type ServerFrame =
   | { type: 'status'; state: SessionStatus }
   | { type: 'entity'; is_new: boolean; entity: SpiritEntity }
   | { type: 'anomaly_ack'; count: number }
+  | { type: 'anomaly'; source: 'radio' | 'evp' | 'wire'; frequency: number; magnitude: number }
   | { type: 'utterance'; id: string; kind: UtteranceKind; text: string; entity: string | null }
   | { type: 'audio'; id: string; url: string }
   | { type: 'reply_start' }