feat: power play indicator with live countdown clock

Shows a red pill below the team rows when a PP is active, displaying
the team on the power play and a ticking countdown. PP clock always
resyncs from the API (no local anchoring) since 2-minute penalties
are short enough that accuracy matters throughout. Removed the old
inline PP text from team rows.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/static/styles.css

@@ -209,6 +209,47 @@ main {
     white-space: nowrap;
 }
 
+/* ── Power Play Indicator ───────────────────────── */
+
+.pp-indicator {
+    display: flex;
+    align-items: center;
+    gap: 0.4rem;
+    margin-top: 0.5rem;
+    padding: 0.35rem 0.5rem;
+    background: rgba(239, 68, 68, 0.1);
+    border: 1px solid rgba(239, 68, 68, 0.3);
+    border-radius: 6px;
+}
+
+.pp-label {
+    font-size: 0.6rem;
+    font-weight: 700;
+    letter-spacing: 0.08em;
+    color: var(--red);
+    text-transform: uppercase;
+    flex-shrink: 0;
+}
+
+.pp-team {
+    font-size: 0.72rem;
+    font-weight: 600;
+    color: var(--text);
+    flex: 1;
+    min-width: 0;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.pp-clock {
+    font-size: 0.72rem;
+    font-weight: 700;
+    color: var(--red);
+    flex-shrink: 0;
+    font-variant-numeric: tabular-nums;
+}
+
 /* ── Hype Meter ─────────────────────────────────── */
 
 .hype-meter {