fix(release): 完成分发证明代际绑定与质量门禁收口

internal/api/release_index.go

@@ -61,6 +61,7 @@ type GameMainConfigSummary struct {
 // attestation. The local manifest checks only establish that this process has
 // a complete, safe read snapshot; they do not replace Rust's verifier.
 type DistributionHealth struct {
+	Available              bool     `json:"available"`
 	Ready                  bool     `json:"ready"`
 	Source                 string   `json:"source"`
 	Channel                string   `json:"channel,omitempty"`
@@ -72,6 +73,7 @@ type DistributionHealth struct {
 	EntryCount             int      `json:"entry_count,omitempty"`
 	VerificationGeneration uint64   `json:"verification_generation,omitempty"`
 	VerifiedAt             *uint64  `json:"verified_at,omitempty"`
+	MaxAgeSeconds          uint64   `json:"max_age_seconds,omitempty"`
 	Status                 string   `json:"status,omitempty"`
 	StatusCode             string   `json:"status_code,omitempty"`
 	IntegrityStatus        string   `json:"integrity_status,omitempty"`
@@ -130,7 +132,8 @@ func (idx *ReleaseIndex) Summary() ReleaseSummary {
 	if distribution.Source == "" {
 		distribution.Ready = localComplete && idx.Source != "rpc" && idx.Source != "rpc+local_manifest"
 	} else {
-		distribution.Ready = distribution.Ready &&
+		distribution.Ready = distribution.Available &&
+			distribution.Ready &&
 			localComplete &&
 			(idx.Source != "rpc" ||
 				(distribution.ManifestIdentity != "" &&
@@ -310,6 +313,7 @@ func LoadIndexFromResourceRoot(resourceRoot string) (*ReleaseIndex, error) {
 		manifest.Version,
 		entries,
 		DistributionHealth{
+			Available:  true,
 			Ready:      true,
 			Source:     "resource_root_override",
 			Status:     "ready",