fix(billing): 封住发布前计费竞态

阻止上游提交状态不明的任务被租约接管后重复执行，并为人工复核保留可操作的结算记录。

将生产提交绑定到当前估价签名，统一复用预处理快照，并补强规则形状、定点溢出与历史规则兼容校验。

已通过 PostgreSQL 16 集成测试、Go 全量测试与静态检查、前端测试与构建、OpenAPI、依赖审计、镜像、迁移、流水线和 SemVer 门禁。

apps/api/internal/store/pricing_rules_test.go

@@ -0,0 +1,27 @@
+package store
+
+import "testing"
+
+func TestValidateEffectivePricingRuleShape(t *testing.T) {
+	tests := []struct {
+		name       string
+		resource   string
+		unit       string
+		calculator string
+		valid      bool
+	}{
+		{name: "text", resource: "text_input", unit: "1k_tokens", calculator: "token_usage", valid: true},
+		{name: "image", resource: "image", unit: "image", calculator: "unit_weight", valid: true},
+		{name: "video", resource: "video", unit: "5s", calculator: "duration_weight", valid: true},
+		{name: "wrong video unit", resource: "video", unit: "second", calculator: "duration_weight"},
+		{name: "wrong image calculator", resource: "image", unit: "image", calculator: "token_usage"},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			err := ValidateEffectivePricingRuleShape(test.resource, test.unit, test.calculator)
+			if (err == nil) != test.valid {
+				t.Fatalf("valid=%v err=%v", test.valid, err)
+			}
+		})
+	}
+}