feat(agent): complete EvoAgent integration for all 6 agent roles

Migrate all agent roles from Legacy to EvoAgent architecture:
- fundamentals_analyst, technical_analyst, sentiment_analyst, valuation_analyst
- risk_manager, portfolio_manager

Key changes:
- EvoAgent now supports Portfolio Manager compatibility methods (_make_decision,
  get_decisions, get_portfolio_state, load_portfolio_state, update_portfolio)
- Add UnifiedAgentFactory for centralized agent creation
- ToolGuard with batch approval API and WebSocket broadcast
- Legacy agents marked deprecated (AnalystAgent, RiskAgent, PMAgent)
- Remove backend/agents/compat.py migration shim
- Add run_id alongside workspace_id for semantic clarity
- Complete integration test coverage (13 tests)
- All smoke tests passing for 6 agent roles

Constraint: Must maintain backward compatibility with existing run configs
Constraint: Memory support must work with EvoAgent (no fallback to Legacy)
Rejected: Separate PM implementation for EvoAgent | unified approach cleaner
Confidence: high
Scope-risk: broad
Directive: EVO_AGENT_IDS env var still respected but defaults to all roles
Not-tested: Kubernetes sandbox mode for skill execution

frontend/src/components/RuntimeView.jsx

@@ -207,6 +207,12 @@ function formatSessionLabel(sessionId) {
   return sessionId || '无会话';
 }
 
+function formatApprovalScopeLabel(approval) {
+  const runId = approval?.run_id || approval?.workspace_id || '-';
+  const agentId = approval?.agent_id || '-';
+  return `${agentId} · 运行 ${runId} · ${formatSessionLabel(approval?.session_id)}`;
+}
+
 function formatEventLabel(eventName) {
   if (!eventName) {
     return '-';
@@ -598,7 +604,7 @@ export default function RuntimeView() {
                   </div>
                 </div>
                 <div style={{ fontSize: 11, color: '#6B7280', lineHeight: 1.5 }}>
-                  {approval.agent_id} · {approval.workspace_id} · {formatSessionLabel(approval.session_id)}
+                  {formatApprovalScopeLabel(approval)}
                 </div>
                 {approval.tool_input && (
                   <pre style={{