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/components/GraphView.css

@@ -0,0 +1,78 @@
+/* GraphView — scrolling wire-flood time-series for the séance board area.
+   Tokens: bg #07070d · panel rgba(16,16,26,0.85) · phosphor #7cffb2 ·
+   violet #b26bff · radio orange #ff9d4a · mono 'IBM Plex Mono'. */
+
+.graph-view {
+  position: relative;
+  width: 100%;
+  height: 100%;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  background: rgba(16, 16, 26, 0.85);
+  border: 1px solid rgba(124, 255, 178, 0.18);
+  border-radius: 6px;
+  overflow: hidden;
+  filter: drop-shadow(0 0 18px rgba(7, 7, 13, 0.9));
+}
+
+.graph-counters {
+  display: flex;
+  gap: 1.4rem;
+  align-items: center;
+  padding: 8px 14px;
+  border-bottom: 1px solid rgba(124, 255, 178, 0.12);
+  font-family: 'IBM Plex Mono', ui-monospace, Menlo, monospace;
+  flex-shrink: 0;
+}
+
+.graph-counter {
+  display: flex;
+  align-items: baseline;
+  gap: 0.5rem;
+  white-space: nowrap;
+}
+
+.counter-key {
+  font-size: 0.62rem;
+  letter-spacing: 0.18em;
+  color: rgba(211, 233, 219, 0.5);
+}
+
+.counter-val {
+  font-size: 0.85rem;
+  color: #7cffb2;
+  text-shadow: 0 0 10px rgba(124, 255, 178, 0.55);
+}
+
+.counter-entity {
+  color: #b26bff;
+  text-shadow: 0 0 10px rgba(178, 107, 255, 0.55);
+}
+
+.graph-canvas-wrap {
+  position: relative;
+  flex: 1 1 auto;
+  min-height: 0;
+}
+
+.graph-canvas-wrap canvas {
+  position: absolute;
+  inset: 0;
+  cursor: crosshair;
+}
+
+.graph-listening {
+  position: absolute;
+  left: 50%;
+  top: 50%;
+  transform: translate(-50%, -50%);
+  margin: 0;
+  color: #b26bff;
+  font-family: 'IBM Plex Mono', ui-monospace, Menlo, monospace;
+  font-size: 0.78rem;
+  letter-spacing: 0.22em;
+  text-transform: uppercase;
+  text-shadow: 0 0 12px rgba(178, 107, 255, 0.7);
+  pointer-events: none;
+}