feat: 提交详情能看 diff，也能丢给 AI 审这一次改动。文件检查可单独排除路径，TODO 只认大写，避免把 todo 表和模块当成待办标记。

热力图按容器宽度铺满一年，不再横向滚动。托盘右键换成可换皮肤的弹层；更新下载显示进度，退出后再由脚本拉起安装器，避免还占着 exe。

service/insights.go

@@ -21,7 +21,7 @@ const (
 // 它不会重新遍历整个仓库，只读取已记录的小型源码文件，用于发现 TODO、长文件等轻量风险。
 type InsightService struct{}
 
-func (InsightService) Analyze(ctx context.Context, project model.Project, structure model.StructureStats, git model.GitStats) (model.ProjectInsights, error) {
+func (InsightService) Analyze(ctx context.Context, project model.Project, structure model.StructureStats, git model.GitStats, excludes []model.ExclusionRule) (model.ProjectInsights, error) {
 	desc, e := platform.ResolvePath(project.Path)
 	if e != nil {
 		return model.ProjectInsights{}, e
@@ -40,6 +40,7 @@ func (InsightService) Analyze(ctx context.Context, project model.Project, struct
 	}
 
 	checkLanguageHealth(project.Languages, add)
+	structure = filterStructureForInsights(structure, excludes)
 	out.Summary.LargeFiles = len(structure.LargeFiles)
 	checkStructureHealth(structure, add)
 	checkGitHealth(git, add)
@@ -162,7 +163,7 @@ func inspectTextFile(path string) (int, []model.InsightIssue) {
 			kind, severity = "FIXME", "medium"
 		case strings.Contains(upper, "HACK"):
 			kind, severity = "HACK", "medium"
-		case strings.Contains(upper, "TODO"):
+		case hasUpperTODO(text):
 			kind = "TODO"
 		}
 		if kind != "" {
@@ -172,6 +173,70 @@ func inspectTextFile(path string) (int, []model.InsightIssue) {
 	return line, issues
 }
 
+func filterStructureForInsights(s model.StructureStats, rules []model.ExclusionRule) model.StructureStats {
+	if len(rules) == 0 {
+		return s
+	}
+	out := s
+	out.Files = out.Files[:0:0]
+	out.LargeFiles = out.LargeFiles[:0:0]
+	out.Folders = out.Folders[:0:0]
+	for _, f := range s.Files {
+		if pathExcluded(f.Path, rules) {
+			continue
+		}
+		out.Files = append(out.Files, f)
+	}
+	for _, f := range s.LargeFiles {
+		if pathExcluded(f.Path, rules) {
+			continue
+		}
+		out.LargeFiles = append(out.LargeFiles, f)
+	}
+	for _, f := range s.Folders {
+		if pathExcluded(f.Name, rules) {
+			continue
+		}
+		out.Folders = append(out.Folders, f)
+	}
+	return out
+}
+
+func pathExcluded(path string, rules []model.ExclusionRule) bool {
+	path = strings.TrimSpace(path)
+	if path == "" || len(rules) == 0 {
+		return false
+	}
+	slash := filepath.ToSlash(path)
+	for _, r := range rules {
+		if MatchExcludedPattern(r.Pattern, slash) {
+			return true
+		}
+	}
+	return false
+}
+
+// hasUpperTODO 只认大写 TODO 标记，避免命中 todo 表名、模块名或变量。
+func hasUpperTODO(text string) bool {
+	for i := 0; i <= len(text)-4; i++ {
+		if text[i:i+4] != "TODO" {
+			continue
+		}
+		if i > 0 && isIdentByte(text[i-1]) {
+			continue
+		}
+		if i+4 < len(text) && isIdentByte(text[i+4]) {
+			continue
+		}
+		return true
+	}
+	return false
+}
+
+func isIdentByte(b byte) bool {
+	return b == '_' || (b >= 'A' && b <= 'Z') || (b >= 'a' && b <= 'z') || (b >= '0' && b <= '9')
+}
+
 func isInsightTextFile(ext string) bool {
 	switch strings.ToLower(ext) {
 	case ".go", ".php", ".js", ".ts", ".vue", ".jsx", ".tsx", ".css", ".scss", ".sass", ".less", ".html", ".md", ".json", ".yaml", ".yml", ".xml", ".sql", ".py", ".java", ".cs", ".rb", ".rs", ".c", ".cpp", ".h":