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/state/seance.tsx

@@ -220,6 +220,34 @@ export function seanceReducer(state: SeanceState, action: SeanceAction): SeanceS
         case 'anomaly_ack':
           return { ...state, anomalyCount: frame.count }
 
+        case 'anomaly': {
+          // Server-pushed anomaly (the wire-telemetry detector) — same shape
+          // and handling as a locally-detected one.
+          const entry: AnomalyEntry = {
+            id: nextId(),
+            source: frame.source,
+            frequency: frame.frequency,
+            magnitude: frame.magnitude,
+            at,
+          }
+          return {
+            ...state,
+            anomalies: pushCapped(state.anomalies, entry, ANOMALY_CAP),
+            transcript: pushCapped(
+              state.transcript,
+              {
+                id: entry.id,
+                kind: 'anomaly',
+                source: frame.source,
+                frequency: frame.frequency,
+                magnitude: frame.magnitude,
+                at,
+              },
+              TRANSCRIPT_CAP,
+            ),
+          }
+        }
+
         case 'utterance': {
           const ut: Utterance = {
             id: frame.id,