feat(routing): 引入多执行池智能调度

将 Worker 发现、路由画像、容量与执行传输抽象为平台无关接口，新增 Kubernetes 和静态容量适配器，并以 shadow 模式接入生产配置。

实现网络与容量评分、路由防抖、池队列、同步 Worker 租约、一次性执行令牌，以及提交状态不明时禁止重复分配的安全语义。

新增 0105 兼容迁移、管理接口、指标、OpenAPI 和回归测试。已执行全量 Go 测试、go vet、OpenAPI、迁移安全、Compose 与 Kustomize 验证。

apps/api/internal/store/postgres.go

@@ -634,6 +634,15 @@ type GatewayTask struct {
 	CompatibilitySubmitHTTPStatus int                `json:"compatibilitySubmitHttpStatus,omitempty"`
 	CompatibilitySubmitHeaders    map[string]any     `json:"compatibilitySubmitHeaders,omitempty"`
 	CompatibilitySubmitBody       map[string]any     `json:"compatibilitySubmitBody,omitempty"`
+	AssignedPoolID                string             `json:"-"`
+	AssignedWorkerID              string             `json:"-"`
+	RouteProfileKey               string             `json:"-"`
+	RoutingPlatformID             string             `json:"-"`
+	RoutingPlatformModelID        string             `json:"-"`
+	RoutingVersion                string             `json:"-"`
+	RoutingReason                 string             `json:"-"`
+	RoutingSnapshot               map[string]any     `json:"-"`
+	SubmissionState               string             `json:"-"`
 	Attempts                      []TaskAttempt      `json:"attempts,omitempty"`
 	CreatedAt                     time.Time          `json:"createdAt"`
 	UpdatedAt                     time.Time          `json:"updatedAt"`
@@ -662,6 +671,10 @@ COALESCE(error_code, ''), COALESCE(error_message, ''), COALESCE(public_error, '{
 COALESCE(compatibility_protocol, ''), COALESCE(compatibility_public_id, ''),
 COALESCE(compatibility_source_protocol, ''), COALESCE(compatibility_submit_http_status, 0),
 COALESCE(compatibility_submit_headers, '{}'::jsonb), COALESCE(compatibility_submit_body, '{}'::jsonb),
+COALESCE(assigned_pool_id, ''), COALESCE(assigned_worker_id, ''), COALESCE(route_profile_key, ''),
+COALESCE(routing_platform_id::text, ''), COALESCE(routing_platform_model_id::text, ''),
+COALESCE(routing_version, ''), COALESCE(routing_reason, ''), COALESCE(routing_snapshot, '{}'::jsonb),
+COALESCE(submission_state, 'not_started'),
 created_at, updated_at, COALESCE(finished_at::text, '')`
 
 type TaskEvent struct {
@@ -2243,6 +2256,7 @@ func scanGatewayTask(scanner taskScanner) (GatewayTask, error) {
 	var remoteTaskPayloadBytes []byte
 	var compatibilitySubmitHeadersBytes []byte
 	var compatibilitySubmitBodyBytes []byte
+	var routingSnapshotBytes []byte
 	var publicErrorBytes []byte
 	if err := scanner.Scan(
 		&task.ID,
@@ -2306,6 +2320,15 @@ func scanGatewayTask(scanner taskScanner) (GatewayTask, error) {
 		&task.CompatibilitySubmitHTTPStatus,
 		&compatibilitySubmitHeadersBytes,
 		&compatibilitySubmitBodyBytes,
+		&task.AssignedPoolID,
+		&task.AssignedWorkerID,
+		&task.RouteProfileKey,
+		&task.RoutingPlatformID,
+		&task.RoutingPlatformModelID,
+		&task.RoutingVersion,
+		&task.RoutingReason,
+		&routingSnapshotBytes,
+		&task.SubmissionState,
 		&task.CreatedAt,
 		&task.UpdatedAt,
 		&task.FinishedAt,
@@ -2322,6 +2345,7 @@ func scanGatewayTask(scanner taskScanner) (GatewayTask, error) {
 	task.PricingSnapshot = decodeObject(pricingSnapshotBytes)
 	task.CompatibilitySubmitHeaders = decodeObject(compatibilitySubmitHeadersBytes)
 	task.CompatibilitySubmitBody = decodeObject(compatibilitySubmitBodyBytes)
+	task.RoutingSnapshot = decodeObject(routingSnapshotBytes)
 	if len(publicErrorBytes) > 0 {
 		var snapshot publicerror.Error
 		if json.Unmarshal(publicErrorBytes, &snapshot) == nil && snapshot.Code != "" {