fix(skills): include --allow-hidden-dirs in preview hint from install

The review hint printed after `gh skill install --allow-hidden-dirs`
suggests `gh skill preview` commands. Those commands would fail for
hidden-dir skills because preview would filter them out. Pass the
flag through so the suggested commands work as-is.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: SamMorrowDrums

pkg/cmd/skills/install/install.go

@@ -391,7 +391,7 @@ func installRun(opts *InstallOptions) error {
 			}
 
 			printFileTree(opts.IO.ErrOut, cs, result.Dir, result.Installed)
-			printReviewHint(opts.IO.ErrOut, cs, repoSource, resolved.SHA, result.Installed)
+			printReviewHint(opts.IO.ErrOut, cs, repoSource, resolved.SHA, result.Installed, opts.AllowHiddenDirs)
 			printHostHints(opts.IO.ErrOut, cs, plan.hosts, result.Installed, result.Dir, gitRoot)
 		}
 
@@ -536,7 +536,7 @@ func runLocalInstall(opts *InstallOptions) error {
 		}
 
 		printFileTree(opts.IO.ErrOut, cs, result.Dir, result.Installed)
-		printReviewHint(opts.IO.ErrOut, cs, "", "", result.Installed)
+		printReviewHint(opts.IO.ErrOut, cs, "", "", result.Installed, false)
 		printHostHints(opts.IO.ErrOut, cs, plan.hosts, result.Installed, result.Dir, gitRoot)
 	}
 
@@ -1118,8 +1118,10 @@ func printPreInstallDisclaimer(w io.Writer, cs *iostreams.ColorScheme) {
 
 // printReviewHint warns the user to review installed skills and suggests preview commands.
 // When sha is non-empty the suggested commands include @SHA so the user previews
-// exactly the version that was installed.
-func printReviewHint(w io.Writer, cs *iostreams.ColorScheme, repo, sha string, skillNames []string) {
+// exactly the version that was installed. When allowHiddenDirs is true, the
+// suggested commands include --allow-hidden-dirs so previewing hidden-dir
+// skills works without an extra manual step.
+func printReviewHint(w io.Writer, cs *iostreams.ColorScheme, repo, sha string, skillNames []string, allowHiddenDirs bool) {
 	if len(skillNames) == 0 {
 		return
 	}
@@ -1130,11 +1132,15 @@ func printReviewHint(w io.Writer, cs *iostreams.ColorScheme, repo, sha string, s
 	}
 	fmt.Fprintln(w, "  Review installed content before use:")
 	fmt.Fprintln(w)
+	hiddenFlag := ""
+	if allowHiddenDirs {
+		hiddenFlag = " --allow-hidden-dirs"
+	}
 	for _, name := range skillNames {
 		if sha != "" {
-			fmt.Fprintf(w, "    gh skill preview %s %s@%s\n", repo, name, sha)
+			fmt.Fprintf(w, "    gh skill preview %s %s@%s%s\n", repo, name, sha, hiddenFlag)
 		} else {
-			fmt.Fprintf(w, "    gh skill preview %s %s\n", repo, name)
+			fmt.Fprintf(w, "    gh skill preview %s %s%s\n", repo, name, hiddenFlag)
 		}
 	}
 	fmt.Fprintln(w)

pkg/cmd/skills/install/install_test.go

@@ -2141,11 +2141,12 @@ func Test_isSkillPath(t *testing.T) {
 
 func Test_printReviewHint(t *testing.T) {
 	tests := []struct {
-		name       string
-		repo       string
-		sha        string
-		skillNames []string
-		wantOutput string
+		name            string
+		repo            string
+		sha             string
+		skillNames      []string
+		allowHiddenDirs bool
+		wantOutput      string
 	}{
 		{
 			name:       "remote install with SHA includes SHA in preview command",
@@ -2182,14 +2183,30 @@ func Test_printReviewHint(t *testing.T) {
 			skillNames: []string{},
 			wantOutput: "",
 		},
+		{
+			name:            "allow-hidden-dirs appends flag to preview command",
+			repo:            "owner/repo",
+			sha:             "abc123",
+			skillNames:      []string{"hidden-skill"},
+			allowHiddenDirs: true,
+			wantOutput:      "gh skill preview owner/repo hidden-skill@abc123 --allow-hidden-dirs",
+		},
+		{
+			name:            "allow-hidden-dirs without SHA",
+			repo:            "owner/repo",
+			sha:             "",
+			skillNames:      []string{"hidden-skill"},
+			allowHiddenDirs: true,
+			wantOutput:      "gh skill preview owner/repo hidden-skill --allow-hidden-dirs",
+		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			ios, _, _, _ := iostreams.Test()
 			cs := ios.ColorScheme()
 			var buf strings.Builder
-			printReviewHint(&buf, cs, tt.repo, tt.sha, tt.skillNames)
+			printReviewHint(&buf, cs, tt.repo, tt.sha, tt.skillNames, tt.allowHiddenDirs)
 			if tt.wantOutput == "" {
 				assert.Empty(t, buf.String())
 			} else {