add deliberation timeline UI

dashboard/src/components/deliberation/ConflictCard.tsx

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+import type { Conflict, ConflictNature } from '../../types/api';
+
+interface ConflictCardProps {
+  conflict: Conflict;
+}
+
+const natureConfig: Record<
+  ConflictNature,
+  { bg: string; text: string; label: string }
+> = {
+  contradictory: {
+    bg: 'bg-red-100',
+    text: 'text-red-800',
+    label: 'Contradictory',
+  },
+  trade_off: {
+    bg: 'bg-yellow-100',
+    text: 'text-yellow-800',
+    label: 'Trade-off',
+  },
+  overlapping: {
+    bg: 'bg-blue-100',
+    text: 'text-blue-800',
+    label: 'Overlapping',
+  },
+};
+
+export function ConflictCard({ conflict }: ConflictCardProps) {
+  const config = natureConfig[conflict.nature];
+
+  return (
+    <div className="border border-gray-200 rounded-lg p-4">
+      <div className="flex items-start justify-between gap-4 mb-3">
+        <span
+          className={`inline-flex items-center px-2 py-0.5 rounded text-xs font-medium ${config.bg} ${config.text}`}
+        >
+          {config.label}
+        </span>
+        <span className="text-xs text-gray-500">
+          Weight: {conflict.severity_weight.toFixed(2)}
+        </span>
+      </div>
+      <p className="text-sm text-gray-700 mb-3">{conflict.description}</p>
+      {conflict.resolution && (
+        <div className="bg-green-50 border border-green-200 rounded-md p-3">
+          <h4 className="text-xs font-medium text-green-800 uppercase tracking-wide mb-1">
+            Resolution
+          </h4>
+          <p className="text-sm text-green-700">{conflict.resolution}</p>
+        </div>
+      )}
+      <div className="mt-2 text-xs text-gray-500">
+        Findings involved: {conflict.finding_ids.join(', ')}
+      </div>
+    </div>
+  );
+}

dashboard/src/components/deliberation/DeliberationTimeline.tsx

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+import { useState } from 'react';
+import type { DeliberationStep, StepType } from '../../types/api';
+
+interface DeliberationTimelineProps {
+  steps: DeliberationStep[];
+}
+
+const stepConfig: Record<
+  StepType,
+  { icon: string; color: string; bg: string; label: string }
+> = {
+  merge: {
+    icon: '🔀',
+    color: 'text-blue-600',
+    bg: 'bg-blue-100',
+    label: 'Merge',
+  },
+  conflict_detection: {
+    icon: '⚠️',
+    color: 'text-yellow-600',
+    bg: 'bg-yellow-100',
+    label: 'Conflict Detection',
+  },
+  synthesis: {
+    icon: '🧪',
+    color: 'text-purple-600',
+    bg: 'bg-purple-100',
+    label: 'Synthesis',
+  },
+  verdict: {
+    icon: '⚖️',
+    color: 'text-green-600',
+    bg: 'bg-green-100',
+    label: 'Verdict',
+  },
+};
+
+function formatTime(timestamp: string): string {
+  return new Date(timestamp).toLocaleTimeString('en-US', {
+    hour: '2-digit',
+    minute: '2-digit',
+    second: '2-digit',
+  });
+}
+
+interface StepItemProps {
+  step: DeliberationStep;
+  isLast: boolean;
+}
+
+function StepItem({ step, isLast }: StepItemProps) {
+  const [isExpanded, setIsExpanded] = useState(false);
+  const config = stepConfig[step.step_type];
+
+  return (
+    <div className="relative">
+      {!isLast && (
+        <div className="absolute left-5 top-10 bottom-0 w-0.5 bg-gray-200" />
+      )}
+      <div className="flex gap-4">
+        <div
+          className={`flex-shrink-0 w-10 h-10 rounded-full ${config.bg} flex items-center justify-center`}
+        >
+          <span>{config.icon}</span>
+        </div>
+        <div className="flex-1 pb-6">
+          <button
+            onClick={() => setIsExpanded(!isExpanded)}
+            className="w-full text-left"
+          >
+            <div className="flex items-center justify-between">
+              <span className={`text-sm font-medium ${config.color}`}>
+                {config.label}
+              </span>
+              <span className="text-xs text-gray-500">
+                {formatTime(step.timestamp)}
+              </span>
+            </div>
+            <p className="text-sm text-gray-700 mt-1">{step.description}</p>
+          </button>
+          {isExpanded && Object.keys(step.details).length > 0 && (
+            <div className="mt-3 bg-gray-50 rounded-md p-3">
+              <h4 className="text-xs font-medium text-gray-500 uppercase tracking-wide mb-2">
+                Details
+              </h4>
+              <pre className="text-xs text-gray-700 overflow-x-auto">
+                {JSON.stringify(step.details, null, 2)}
+              </pre>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
+
+export function DeliberationTimeline({ steps }: DeliberationTimelineProps) {
+  const sortedSteps = [...steps].sort((a, b) => a.sequence - b.sequence);
+
+  if (steps.length === 0) {
+    return (
+      <div className="bg-gray-50 border border-gray-200 rounded-lg p-6 text-center">
+        <p className="text-gray-600">No deliberation steps recorded</p>
+      </div>
+    );
+  }
+
+  return (
+    <div className="bg-white border border-gray-200 rounded-lg p-4">
+      {sortedSteps.map((step, index) => (
+        <StepItem
+          key={step.id}
+          step={step}
+          isLast={index === sortedSteps.length - 1}
+        />
+      ))}
+    </div>
+  );
+}