improve CLI error semantics and soundcloud canonicalization

Auto-upgrade outdated configs on startup, add actionable SSL verification hints in rip error paths, and harden SoundCloud search/metadata with canonical URL handling and richer source IDs.

internal/config/config.go

@@ -171,7 +171,7 @@ func Load(path string) (*Config, error) {
 		return nil, err
 	}
 
-	var data ConfigData
+	data := DefaultConfigData()
 	if err = toml.Unmarshal(raw, &data); err != nil {
 		return nil, err
 	}
@@ -184,6 +184,27 @@ func Load(path string) (*Config, error) {
 	return &Config{Path: resolvedPath, File: data, Session: cloneConfigData(data)}, nil
 }
 
+func UpgradeOutdated(path string) (string, error) {
+	resolvedPath, err := resolvePath(path)
+	if err != nil {
+		return "", err
+	}
+	raw, err := os.ReadFile(resolvedPath)
+	if err != nil {
+		return "", err
+	}
+	data := DefaultConfigData()
+	if err = toml.Unmarshal(raw, &data); err != nil {
+		return "", err
+	}
+	applyRuntimeDefaults(&data)
+	data.Misc.Version = CurrentConfigVersion
+	if err = saveConfigData(resolvedPath, data); err != nil {
+		return "", err
+	}
+	return resolvedPath, nil
+}
+
 func (c *Config) SaveFile() error {
 	return saveConfigData(c.Path, c.File)
 }