Make registry cache TTL configurable

Author: majiayu000

README.md

@@ -158,13 +158,14 @@ Config file: `~/.skrc`
 ```json
 {
   "skills_dir": "~/.claude/skills",
-  "registry": "https://raw.githubusercontent.com/majiayu000/claude-skill-registry/main"
+  "registry": "https://raw.githubusercontent.com/majiayu000/claude-skill-registry/main",
+  "registry_ttl_hours": 24
 }
 ```
 
 Registry cache:
 - Location: `~/.cache/sk/registry.json`
-- TTL: 24 hours (cache is ignored after expiry)
+- TTL: `registry_ttl_hours` (cache is ignored after expiry)
 
 ## Built With
 

internal/config/config.go

@@ -9,16 +9,18 @@ import (
 
 // Config represents the global configuration
 type Config struct {
-	SkillsDir string `json:"skills_dir"`
-	Registry  string `json:"registry"`
+	SkillsDir        string `json:"skills_dir"`
+	Registry         string `json:"registry"`
+	RegistryTTLHours int    `json:"registry_ttl_hours"`
 }
 
 // DefaultConfig returns default configuration
 func DefaultConfig() *Config {
 	homeDir, _ := os.UserHomeDir()
 	return &Config{
-		SkillsDir: filepath.Join(homeDir, ".claude", "skills"),
-		Registry:  "github",
+		SkillsDir:        filepath.Join(homeDir, ".claude", "skills"),
+		Registry:         "github",
+		RegistryTTLHours: 24,
 	}
 }
 
@@ -28,6 +30,15 @@ func GetSkillsDir() string {
 	return cfg.SkillsDir
 }
 
+// GetRegistryTTL returns registry cache TTL in hours.
+func GetRegistryTTL() int {
+	cfg := Load()
+	if cfg.RegistryTTLHours <= 0 {
+		return DefaultConfig().RegistryTTLHours
+	}
+	return cfg.RegistryTTLHours
+}
+
 // GetRegistryBaseURL returns the registry base URL.
 // If config uses legacy "github", return default registry URL.
 func GetRegistryBaseURL() string {

internal/registry/registry.go

@@ -15,7 +15,6 @@ import (
 const (
 	// DefaultRegistryURL is the base URL for the skill registry
 	DefaultRegistryURL = "https://raw.githubusercontent.com/majiayu000/claude-skill-registry/main"
-	registryCacheTTL   = 24 * time.Hour
 )
 
 // Registry represents the skill registry
@@ -239,7 +238,8 @@ func loadRegistryCache() (*Registry, error) {
 	if err != nil {
 		return nil, err
 	}
-	if time.Since(info.ModTime()) > registryCacheTTL {
+	ttl := time.Duration(config.GetRegistryTTL()) * time.Hour
+	if time.Since(info.ModTime()) > ttl {
 		return nil, fmt.Errorf("registry cache expired")
 	}