feat(channel): 渠道管理全链路集成 — 模型映射、定价、限制、用量统计

- 渠道模型映射：支持精确匹配和通配符映射，按平台隔离
- 渠道模型定价：支持 token/按次/图片三种计费模式，区间分层定价
- 模型限制：渠道可限制仅允许定价列表中的模型
- 计费模型来源：支持 requested/upstream 两种计费模型选择
- 用量统计：usage_logs 新增 channel_id/model_mapping_chain/billing_tier/billing_mode 字段
- Dashboard 支持 model_source 维度（requested/upstream/mapping）查看模型统计
- 全部 gateway handler 统一接入 ResolveChannelMappingAndRestrict
- 修复测试：同步 SoraGenerationRepository 接口、SQL INSERT 参数、scan 字段

frontend/src/components/admin/channel/types.ts

@@ -73,6 +73,45 @@ export function formIntervalsToAPI(intervals: IntervalFormEntry[]): PricingInter
   }))
 }
 
+// ── 模型模式冲突检测 ──────────────────────────────────────
+
+interface ModelPattern {
+  pattern: string
+  prefix: string  // lowercase, 通配符去掉尾部 *
+  wildcard: boolean
+}
+
+function toModelPattern(model: string): ModelPattern {
+  const lower = model.toLowerCase()
+  const wildcard = lower.endsWith('*')
+  return {
+    pattern: model,
+    prefix: wildcard ? lower.slice(0, -1) : lower,
+    wildcard,
+  }
+}
+
+function patternsConflict(a: ModelPattern, b: ModelPattern): boolean {
+  if (!a.wildcard && !b.wildcard) return a.prefix === b.prefix
+  if (a.wildcard && !b.wildcard) return b.prefix.startsWith(a.prefix)
+  if (!a.wildcard && b.wildcard) return a.prefix.startsWith(b.prefix)
+  // 双通配符：任一前缀是另一前缀的前缀即冲突
+  return a.prefix.startsWith(b.prefix) || b.prefix.startsWith(a.prefix)
+}
+
+/** 检测模型模式列表中的冲突，返回冲突的两个模式名；无冲突返回 null */
+export function findModelConflict(models: string[]): [string, string] | null {
+  const patterns = models.map(toModelPattern)
+  for (let i = 0; i < patterns.length; i++) {
+    for (let j = i + 1; j < patterns.length; j++) {
+      if (patternsConflict(patterns[i], patterns[j])) {
+        return [patterns[i].pattern, patterns[j].pattern]
+      }
+    }
+  }
+  return null
+}
+
 /** 平台对应的模型 tag 样式（背景+文字） */
 export function getPlatformTagClass(platform: string): string {
   switch (platform) {

frontend/src/components/charts/EndpointDistributionChart.vue

@@ -161,6 +161,7 @@ const props = withDefaults(
     showSourceToggle?: boolean
     startDate?: string
     endDate?: string
+    filters?: Record<string, any>
   }>(),
   {
     upstreamEndpointStats: () => [],
@@ -193,6 +194,7 @@ const toggleBreakdown = async (endpoint: string) => {
   breakdownItems.value = []
   try {
     const res = await getUserBreakdown({
+      ...props.filters,
       start_date: props.startDate,
       end_date: props.endDate,
       endpoint,

frontend/src/components/charts/GroupDistributionChart.vue

@@ -125,6 +125,7 @@ const props = withDefaults(defineProps<{
   showMetricToggle?: boolean
   startDate?: string
   endDate?: string
+  filters?: Record<string, any>
 }>(), {
   loading: false,
   metric: 'tokens',
@@ -150,6 +151,7 @@ const toggleBreakdown = async (type: string, id: number | string) => {
   breakdownItems.value = []
   try {
     const res = await getUserBreakdown({
+      ...props.filters,
       start_date: props.startDate,
       end_date: props.endDate,
       group_id: Number(id),

frontend/src/components/charts/ModelDistributionChart.vue

@@ -270,6 +270,7 @@ const props = withDefaults(defineProps<{
   rankingError?: boolean
   startDate?: string
   endDate?: string
+  filters?: Record<string, any>
 }>(), {
   upstreamModelStats: () => [],
   mappingModelStats: () => [],
@@ -302,6 +303,7 @@ const toggleBreakdown = async (type: string, id: string) => {
   breakdownItems.value = []
   try {
     const res = await getUserBreakdown({
+      ...props.filters,
       start_date: props.startDate,
       end_date: props.endDate,
       model: id,