feat: look for repos in the usual folders, not just ~/git

Without roots in the config, repos are found under whichever of ~/git,
~/repo, ~/repos, ~/projects, ~/code, ~/source and ~/src exist. Missing
ones cost a stat each. A root that's a symlink to another is scanned
once, and a repo under two roots keeps the first one's name.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

internal/provider/repo/repo.go

@@ -80,6 +80,10 @@ type repoInfo struct {
 	here   bool   // the repo lazysecrets started in
 }
 
+// DefaultRoots are the usual folders of repos, used when the config
+// doesn't set roots. Ones that don't exist cost a stat each.
+var DefaultRoots = []string{"~/git", "~/repo", "~/repos", "~/projects", "~/code", "~/source", "~/src"}
+
 func New(s Settings) *Provider {
 	if s.Sops == "" {
 		s.Sops = "sops"
@@ -116,10 +120,18 @@ func (p *Provider) load() {
 			}
 			add(root)
 		}
+		// Missing roots are skipped (most of the defaults are), and one
+		// that's a symlink to another is scanned once.
+		scanned := map[string]bool{}
 		for _, dir := range p.s.Roots {
-			base, _ := filepath.EvalSymlinks(expandHome(dir))
-			for _, root := range reposIn(expandHome(dir), 2) {
-				if name, err := filepath.Rel(base, root); err == nil && !strings.HasPrefix(name, "..") {
+			base, err := filepath.EvalSymlinks(expandHome(dir))
+			if err != nil || scanned[base] {
+				continue
+			}
+			scanned[base] = true
+			for _, root := range reposIn(base, 2) {
+				// A repo under two roots keeps the first one's name.
+				if name, err := filepath.Rel(base, root); err == nil && !strings.HasPrefix(name, "..") && names[root] == "" {
 					names[root] = filepath.ToSlash(name)
 				}
 				add(root)

internal/provider/repo/repo_test.go

@@ -336,6 +336,30 @@ func TestRoots(t *testing.T) {
 	}
 }
 
+func TestRootsDeduped(t *testing.T) {
+	root, _ := filepath.EvalSymlinks(t.TempDir())
+	os.Rename(gitRepo(t, map[string]string{"secrets/a.yaml": sopsYAML}), filepath.Join(root, "infra"))
+	os.MkdirAll(filepath.Join(root, "acme"), 0o755)
+	os.Rename(gitRepo(t, map[string]string{"prod.env": sopsEnv}), filepath.Join(root, "acme", "billing"))
+
+	// ~/src → ~/git, and a root reaching one repo at another depth.
+	links := t.TempDir()
+	alias := filepath.Join(links, "src")
+	os.Symlink(root, alias)
+	missing := filepath.Join(links, "nope")
+	acme := filepath.Join(root, "acme")
+
+	srcs, err := New(Settings{Dir: links, Roots: []string{missing, root, alias, acme}}).Sources(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	got := names(srcs, func(s provider.Source) string { return s.Name })
+	slices.Sort(got)
+	if !slices.Equal(got, []string{"acme/billing", "infra"}) {
+		t.Errorf("repos: %v, want each once, named from the first root", got)
+	}
+}
+
 func TestStarredReposAlongside(t *testing.T) {
 	here := gitRepo(t, map[string]string{"secrets/a.yaml": sopsYAML})
 	starred := gitRepo(t, map[string]string{"prod.env": sopsEnv})