fix(nightly): inject correct semver 0.<next-minor>.0-nightly-abc1234 for nightly builds

.goreleaser.yaml

@@ -11,6 +11,14 @@ before:
 
 report_sizes: true
 
+git:
+  # Skip the stale 'nightly' tag so {{.Version}} resolves to the latest semver tag for --snapshot builds.
+  ignore_tags:
+    - nightly
+snapshot:
+  # Semver-compliant nightly version, e.g. "0.19.0-nightly-abc1234" when the latest tag is v0.18.0.
+  version_template: "{{ incminor .Version }}-nightly-{{.ShortCommit}}"
+
 builds:
   - id: uncloud
     main: ./cmd/uncloud

internal/grpcversion/interceptor.go

@@ -38,10 +38,11 @@ const (
 )
 
 var (
-	// currentVersion is the version of this binary (CLI or daemon).
-	currentVersion = semver.MustParse(version.String())
 	// zeroVersion is used when no version is specified (treated as 0.0.0).
 	zeroVersion = semver.MustParse("0.0.0")
+	// currentVersion is the version of this binary (CLI or daemon). It's injected via an ldflag at build time.
+	// Fall back to zeroVersion if the injected string isn't valid semver.
+	currentVersion = parseVersionOrZero(version.String())
 	// Pre-parsed minimum versions for comparison.
 	minClientVersion = semver.MustParse(MinClientVersion)
 	minServerVersion = semver.MustParse(MinServerVersion)
@@ -55,6 +56,15 @@ var (
 	WarnWriter io.Writer = os.Stderr
 )
 
+// parseVersionOrZero parses v as a semver, returning zeroVersion if parsing fails.
+func parseVersionOrZero(v string) *semver.Version {
+	parsed, err := semver.NewVersion(v)
+	if err != nil {
+		return zeroVersion
+	}
+	return parsed
+}
+
 func extractVersion(md metadata.MD, key string) *semver.Version {
 	if md == nil {
 		return zeroVersion

internal/grpcversion/interceptor_test.go

@@ -12,6 +12,47 @@ import (
 	"google.golang.org/grpc/status"
 )
 
+func TestParseVersionOrZero(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected string
+	}{
+		{
+			name:     "valid semver",
+			input:    "1.2.3",
+			expected: "1.2.3",
+		},
+		{
+			name:     "valid semver with prerelease",
+			input:    "0.19.0-nightly-abc1234",
+			expected: "0.19.0-nightly-abc1234",
+		},
+		{
+			name:     "dev version",
+			input:    "999.0.0-dev",
+			expected: "999.0.0-dev",
+		},
+		{
+			name:     "invalid ldflag-injected string falls back to zero",
+			input:    "nightly-SNAPSHOT-abc1234",
+			expected: "0.0.0",
+		},
+		{
+			name:     "empty string falls back to zero",
+			input:    "",
+			expected: "0.0.0",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := parseVersionOrZero(tt.input)
+			assert.Equal(t, tt.expected, got.String())
+		})
+	}
+}
+
 func TestExtractVersion(t *testing.T) {
 	tests := []struct {
 		name     string