feat(imports): add real pricing and subscription collectors

Add plan catalog and subscription schema support, seed baselines, and real importers for core domestic subscriptions plus stable official pricing sources.

This commit also hardens the shared fetch layers so the importers can support live collection and database writes instead of relying on manual placeholders alone.

scripts/import_aliyun_subscription_test.go

@@ -0,0 +1,71 @@
+//go:build llm_script
+
+package main
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestParseAliyunSubscriptionBuildsPlans(t *testing.T) {
+	tokenRaw, err := os.ReadFile(filepath.Join("testdata", "aliyun_token_plan_sample.txt"))
+	if err != nil {
+		t.Fatalf("读取 token fixture 失败: %v", err)
+	}
+	codingRaw, err := os.ReadFile(filepath.Join("testdata", "aliyun_coding_plan_sample.txt"))
+	if err != nil {
+		t.Fatalf("读取 coding fixture 失败: %v", err)
+	}
+
+	plans, err := parseAliyunSubscriptionCatalog(string(tokenRaw), string(codingRaw))
+	if err != nil {
+		t.Fatalf("parseAliyunSubscriptionCatalog 失败: %v", err)
+	}
+	if len(plans) != 5 {
+		t.Fatalf("期望 5 条阿里云套餐记录，实际 %d", len(plans))
+	}
+
+	if plans[0].PlanCode != "aliyun-token-plan-standard-seat" {
+		t.Fatalf("首条 planCode 错误: %q", plans[0].PlanCode)
+	}
+	if plans[0].ListPrice != 198 {
+		t.Fatalf("标准坐席价格错误: %v", plans[0].ListPrice)
+	}
+	if plans[3].PlanCode != "aliyun-token-plan-shared-pack" {
+		t.Fatalf("共享包 planCode 错误: %q", plans[3].PlanCode)
+	}
+	if plans[4].PlanCode != "aliyun-coding-plan-pro" {
+		t.Fatalf("Coding Plan Pro planCode 错误: %q", plans[4].PlanCode)
+	}
+	if !strings.Contains(plans[4].Notes, "活动已结束") {
+		t.Fatalf("Coding Plan 备注缺少活动说明: %q", plans[4].Notes)
+	}
+}
+
+func TestRunAliyunSubscriptionImportDryRunPrintsSummary(t *testing.T) {
+	var out bytes.Buffer
+	err := runAliyunSubscriptionImport(aliyunSubscriptionImportConfig{
+		TokenFixture:  filepath.Join("testdata", "aliyun_token_plan_sample.txt"),
+		CodingFixture: filepath.Join("testdata", "aliyun_coding_plan_sample.txt"),
+		DryRun:        true,
+	}, nil, &out)
+	if err != nil {
+		t.Fatalf("runAliyunSubscriptionImport 失败: %v", err)
+	}
+
+	output := out.String()
+	for _, want := range []string{
+		"source=aliyun-subscription-import",
+		"plans=5",
+		"provider=Alibaba",
+		"operator=Alibaba Bailian",
+		"dry_run=true",
+	} {
+		if !strings.Contains(output, want) {
+			t.Fatalf("输出缺少 %q，实际: %q", want, output)
+		}
+	}
+}