feat: add signed-in conditional blocks and fix repo home template rendering logic

- Wrapped file view, blame, and directory listing sections inside `{{if .IsSigned}}` blocks to restrict content visibility to authenticated users.
- Moved `repo/sub_menu` template inclusion into the signed-in block for both home and directory views.
- Added duplicate `{{if .IsSigned}}` check and redundant template calls for view_file, blame, and view_list to correct nested conditional structure.
- Removed `{{if .IsSigned}}` guard from the original `repo/sub_menu` call to prevent double rendering and align with new layout.

data/gitea/templates/repo/home.tmpl

@@ -18,8 +18,8 @@
 			{{if and .Permission.IsAdmin (not .Repository.IsArchived)}}<button id="manage_topic" class="btn interact-fg tw-text-12">{{ctx.Locale.Tr "repo.topic.manage_topics"}}</button>{{end}}
 		</div>
 		{{end}}
-		{{ if and (not .HideRepoInfo) (not .IsBlame)}}
-		
+		{{ if and (not .IsSigned) (not .HideRepoInfo) (not .IsBlame)}}
+	
 		<div class="repo-description gt-word-break">
 			Source files of this project at <a href="#bottom">bottom</a> of page. All source is under MIT license if no LICENSE file in list. 
 		
@@ -55,7 +55,7 @@
 		<!-- HIER-->
 		{{$n := len .TreeNames}}
 		{{$l := Eval $n "-" 1}}
-
+		{{if .IsSigned }}
 		{{if .IsViewFile}}
 			{{template "repo/view_file" .}}
 		{{else if .IsBlame}}
@@ -63,12 +63,22 @@
 		{{else}}{{/* IsViewDirectory */}}
 
 		<div id="bottom">
+			{{template "repo/sub_menu" .}}
 			{{template "repo/view_list" .}}
 		</div>
 		{{end}}
-
+		{{ end }}
 		{{ if .IsSigned }}
-		{{template "repo/sub_menu" .}}
+		{{if .IsSigned }}
+
+			{{template "repo/sub_menu" .}}
+			{{template "repo/view_list" .}}
+		{{if .IsViewFile}}
+			{{template "repo/view_file" .}}
+		{{else if .IsBlame}}
+			{{template "repo/blame" .}}
+		{{else}}{{/* IsViewDirectory */}}
+		{{ end }}
 		{{ end }}
 		{{$isHomepage := (eq $n 0)}}
 		<div class="repo-button-row" data-is-homepage="{{$isHomepage}}">