refactor(frontend): finish shadcn→custom primitive migration (green build)

- Remove tw-animate-css import + dead src/components/ui shadcn tree
- Convert 7 orphaned components (moderation, analysis, guild-selector,
  voice/activity-timeline, shared/empty+error) to new primitives
- Add missing moderation/view.tsx; analysis uses SearchPanel directly
- globals.css now uses new signal-driven ops-console tokens
- tsc --noEmit clean, next build green (11 routes), local smoke 200

services/frontend/src/components/primitives/progress.tsx

@@ -0,0 +1,39 @@
+import { cn } from "@/lib/utils";
+
+export interface ProgressProps {
+  value: number;
+  max?: number;
+  className?: string;
+  tone?: "signal" | "amber" | "vermilion";
+  showLabel?: boolean;
+}
+
+export function Progress({
+  value,
+  max = 100,
+  className,
+  tone = "signal",
+  showLabel,
+}: ProgressProps) {
+  const pct = Math.max(0, Math.min(100, (value / max) * 100));
+  const stroke = {
+    signal: "var(--color-signal)",
+    amber: "var(--color-amber)",
+    vermilion: "var(--color-vermilion)",
+  }[tone];
+  return (
+    <div className={cn("flex items-center gap-2", className)}>
+      <div className="relative h-1.5 flex-1 overflow-hidden rounded-full bg-[var(--color-hairline)]">
+        <div
+          className="absolute inset-y-0 left-0 rounded-full transition-[width] duration-300"
+          style={{ width: `${pct}%`, background: stroke }}
+        />
+      </div>
+      {showLabel && (
+        <span className="mono text-xs text-[var(--color-ink-soft)]">
+          {Math.round(pct)}%
+        </span>
+      )}
+    </div>
+  );
+}