🐛 fix(update): 修正 Linux 变体自动更新失效

- 更新资产选择逻辑按当前 Linux 可执行文件变体匹配 release 包
- Linux 更新脚本优先查找与当前二进制同名的新文件
- 补充自动更新回归测试并更新 backlog 记录

Fixes #337

docs/issues/2026-04-11-issue-backlog-tracking.md

@@ -31,6 +31,7 @@
 | #330 | 建议在查询结果表格中增加自适应内容列宽的功能 | Fixed | `632e57e` |
 | #331 | 重复连接 DB，一分钟重试了 60 多次 | Fixed | `ca76440` |
 | #333 | AI 功能添加供应商测试正常，但问答显示失败 | Fixed | Pending |
+| #337 | 自动更新无效 | Fixed | Pending |
 | #351 | 为什么没有截断和清空表的功能呀？ | Fixed | Pending |
 
 ## Notes
@@ -95,6 +96,12 @@
 - 处理：为 `AnthropicProvider.Chat / ChatStream` 补充 400 降级回退。首次带 `tools` 请求若返回 400/422/404，则自动去掉 `tools` 重试一次，允许不支持 function calling 的兼容端点继续完成普通问答。
 - 验证：补充 `internal/ai/provider/anthropic_test.go` 回归测试，覆盖非流式与流式两条链路下“首请求因 tools 返回 400，回退后成功”的场景，并执行 `go test ./internal/ai/provider -count=1`。
 
+### #337
+
+- 根因：Linux 自动更新链路有两个断点。其一，更新资产名只按 `linux/amd64` 固定选择 `GoNavi-<ver>-Linux-Amd64.tar.gz`，没有根据当前运行的是 `WebKit41` 变体去选 `-WebKit41` 包；其二，Linux 安装脚本解压后优先查找固定文件名 `GoNavi`，而 release tar.gz 实际打包的是构建产物名，导致替换阶段经常找不到新二进制。
+- 处理：为更新资产解析新增“基于当前可执行文件路径推断 Linux 变体”的后缀选择逻辑；同时调整 Linux 更新脚本，解压后优先搜索与当前运行二进制同名的文件，再回退查找 `GoNavi`。
+- 验证：补充 `internal/app/methods_update_test.go` 回归测试，覆盖 Linux `WebKit41` 资产名选择与更新脚本目标名解析，并执行 `go test ./internal/app -run 'Test(ExpectedAssetNameForExecutableUsesLinuxWebKit41Suffix|BuildLinuxScriptPrefersTargetExecutableBasename|TestFetchLatestUpdateInfo|TestCheckForUpdates|TestBuildWindowsScript)' -count=1`。
+
 ### #330
 
 - 根因：查询结果表格已经支持拖拽调整列宽，但 resize handle 没有提供双击自适应逻辑，导致用户只能靠手工拖拽慢慢试宽度。

internal/app/methods_update.go

@@ -493,6 +493,19 @@ func fetchLatestRelease() (*githubRelease, error) {
 }
 
 func expectedAssetName(goos, goarch, version string) (string, error) {
+	executablePath := ""
+	if goos == "linux" {
+		if path, err := os.Executable(); err == nil {
+			if resolved, resolveErr := filepath.EvalSymlinks(path); resolveErr == nil && strings.TrimSpace(resolved) != "" {
+				path = resolved
+			}
+			executablePath = path
+		}
+	}
+	return expectedAssetNameForExecutable(goos, goarch, version, executablePath)
+}
+
+func expectedAssetNameForExecutable(goos, goarch, version, executablePath string) (string, error) {
 	version = strings.TrimSpace(version)
 	version = strings.TrimPrefix(version, "v")
 	version = strings.TrimPrefix(version, "V")
@@ -517,12 +530,26 @@ func expectedAssetName(goos, goarch, version string) (string, error) {
 		}
 	case "linux":
 		if goarch == "amd64" {
-			return fmt.Sprintf("GoNavi-%s-Linux-Amd64.tar.gz", version), nil
+			return fmt.Sprintf("GoNavi-%s-Linux-Amd64%s.tar.gz", version, resolveLinuxReleaseArtifactSuffix(executablePath)), nil
 		}
 	}
 	return "", fmt.Errorf("当前平台暂不支持在线更新：%s/%s", goos, goarch)
 }
 
+func resolveLinuxReleaseArtifactSuffix(executablePath string) string {
+	normalizedPath := strings.ToLower(strings.TrimSpace(executablePath))
+	if normalizedPath == "" {
+		return ""
+	}
+	normalizedPath = strings.ReplaceAll(normalizedPath, "\\", "/")
+	compactPath := strings.ReplaceAll(normalizedPath, "_", "")
+	compactPath = strings.ReplaceAll(compactPath, "-", "")
+	if strings.Contains(normalizedPath, "webkit41") || strings.Contains(compactPath, "webkit241") || strings.Contains(compactPath, "webkit41") {
+		return "-WebKit41"
+	}
+	return ""
+}
+
 func findReleaseAsset(assets []githubAsset, name string) (*githubAsset, error) {
 	for _, asset := range assets {
 		if asset.Name == name {
@@ -1195,8 +1222,12 @@ while kill -0 $PID 2>/dev/null; do
 done
 TMPDIR=$(mktemp -d)
 tar -xzf "$ARCHIVE" -C "$TMPDIR"
-NEWBIN="$TMPDIR/GoNavi"
+TARGET_NAME="$(basename "$TARGET")"
+NEWBIN="$TMPDIR/$TARGET_NAME"
 if [ ! -f "$NEWBIN" ]; then
+  NEWBIN=$(find "$TMPDIR" -type f -name "$TARGET_NAME" | head -n 1)
+fi
+if [ -z "$NEWBIN" ] || [ ! -f "$NEWBIN" ]; then
   NEWBIN=$(find "$TMPDIR" -type f -name "GoNavi" | head -n 1)
 fi
 if [ -z "$NEWBIN" ] || [ ! -f "$NEWBIN" ]; then

internal/app/methods_update_test.go

@@ -3,6 +3,7 @@ package app
 import (
 	"errors"
 	stdRuntime "runtime"
+	"strings"
 	"testing"
 )
 
@@ -158,3 +159,41 @@ func TestCheckForUpdatesSilentlySkipsFailureLogs(t *testing.T) {
 		t.Fatalf("expected silent check to skip error logging, got %d", logged)
 	}
 }
+
+func TestExpectedAssetNameForExecutableUsesLinuxWebKit41Suffix(t *testing.T) {
+	assetName, err := expectedAssetNameForExecutable(
+		"linux",
+		"amd64",
+		"v0.6.5",
+		"/opt/GoNavi/gonavi-build-linux-amd64-webkit41",
+	)
+	if err != nil {
+		t.Fatalf("expectedAssetNameForExecutable returned error: %v", err)
+	}
+
+	want := "GoNavi-0.6.5-Linux-Amd64-WebKit41.tar.gz"
+	if assetName != want {
+		t.Fatalf("unexpected linux webkit41 asset name: got %q want %q", assetName, want)
+	}
+}
+
+func TestBuildLinuxScriptPrefersTargetExecutableBasename(t *testing.T) {
+	script := buildLinuxScript(
+		"/tmp/GoNavi-0.6.5-Linux-Amd64-WebKit41.tar.gz",
+		"/opt/GoNavi/gonavi-build-linux-amd64-webkit41",
+		"/tmp/.gonavi-update-linux-0.6.5",
+		12345,
+	)
+
+	mustContain := []string{
+		`TARGET_NAME="$(basename "$TARGET")"`,
+		`NEWBIN="$TMPDIR/$TARGET_NAME"`,
+		`NEWBIN=$(find "$TMPDIR" -type f -name "$TARGET_NAME" | head -n 1)`,
+		`NEWBIN=$(find "$TMPDIR" -type f -name "GoNavi" | head -n 1)`,
+	}
+	for _, want := range mustContain {
+		if !strings.Contains(script, want) {
+			t.Fatalf("linux update script missing required token: %s\nscript:\n%s", want, script)
+		}
+	}
+}