feat: add routing profile scheduling policies

frontend/src/features/routing/utils/routingTrace.ts

@@ -0,0 +1,59 @@
+export interface RoutingCandidateRankVector {
+  provider_priority_before: number
+  provider_priority_after: number
+  key_priority_before: number
+  key_priority_after: number
+}
+
+export interface RoutingCandidateTrace {
+  candidate_kind: 'provider' | 'pool_group'
+  provider_id: string
+  endpoint_id: string
+  model_id: string
+  key_id?: string | null
+  ranking_vector: RoutingCandidateRankVector
+  skip_reason?: string | null
+  selected_order?: number | null
+}
+
+export interface RoutingDecisionTrace {
+  group_id?: string | null
+  group_version?: number | null
+  selection_source: string
+  selected_rules: string[]
+  original_model: string
+  resolved_model: string
+  client_api_format: string
+  global_candidates: RoutingCandidateTrace[]
+  pool_expansion: unknown[]
+  runtime_facts: Record<string, unknown>
+}
+
+export function candidateTraceLabel(candidate: RoutingCandidateTrace): string {
+  const kind = candidate.candidate_kind === 'pool_group' ? '号池' : 'Provider'
+  const key = candidate.key_id ? ` / ${candidate.key_id}` : ''
+  return `${kind} ${candidate.provider_id}${key}`
+}
+
+export function summarizeRoutingTrace(trace: RoutingDecisionTrace): string[] {
+  const lines = [
+    `分组: ${trace.group_id ?? 'legacy'}`,
+    `来源: ${trace.selection_source}`,
+    `模型: ${trace.original_model} -> ${trace.resolved_model}`,
+  ]
+
+  if (trace.selected_rules.length > 0) {
+    lines.push(`规则: ${trace.selected_rules.join(', ')}`)
+  }
+
+  lines.push(`候选: ${trace.global_candidates.length}`)
+  return lines
+}
+
+export function sortCandidateTraces(candidates: readonly RoutingCandidateTrace[]): RoutingCandidateTrace[] {
+  return [...candidates].sort((left, right) => {
+    const leftOrder = left.selected_order ?? Number.MAX_SAFE_INTEGER
+    const rightOrder = right.selected_order ?? Number.MAX_SAFE_INTEGER
+    return leftOrder - rightOrder
+  })
+}