appview: render markdown in titles, commit messages and descriptions

uses the newly added description filter that only autlinks, and renders
backticks, bold and italics.

Signed-off-by: oppiliappan <[e-mail]>

appview/issues/issues.go

···
 	"net/http"
 	"slices"
 	"strconv"
+	"strings"
 	"time"
 
 	comatproto "github.com/bluesky-social/indigo/api/atproto"
···
 	"tangled.sh/tangled.sh/core/appview/notify"
 	"tangled.sh/tangled.sh/core/appview/oauth"
 	"tangled.sh/tangled.sh/core/appview/pages"
+	"tangled.sh/tangled.sh/core/appview/pages/markup"
 	"tangled.sh/tangled.sh/core/appview/pagination"
 	"tangled.sh/tangled.sh/core/appview/reporesolver"
 	"tangled.sh/tangled.sh/core/idresolver"
···
 
 		if title == "" || body == "" {
 			rp.pages.Notice(w, "issues", "Title and body are required")
+			return
+		}
+
+		sanitizer := markup.NewSanitizer()
+		if st := strings.TrimSpace(sanitizer.SanitizeDescription(title)); st == "" {
+			rp.pages.Notice(w, "issues", "Title is empty after HTML sanitization")
+			return
+		}
+		if sb := strings.TrimSpace(sanitizer.SanitizeDefault(body)); sb == "" {
+			rp.pages.Notice(w, "issues", "Body is empty after HTML sanitization")
 			return
 		}
 

appview/pages/templates/repo/fragments/repoDescription.html

···
 {{ define "repo/fragments/repoDescription" }}
 <span id="repo-description" class="flex flex-wrap items-center gap-2 text-sm" hx-target="this" hx-swap="outerHTML">
     {{ if .RepoInfo.Description }}
-        {{ .RepoInfo.Description }}
+        {{ .RepoInfo.Description | description }}
     {{ else }}
         <span class="italic">this repo has no description</span>
     {{ end }}

appview/pages/templates/repo/issues/issue.html

···
 {{ define "repoContent" }}
     <header class="pb-4">
       <h1 class="text-2xl">
-      {{ .Issue.Title }}
+      {{ .Issue.Title | description }}
       <span class="text-gray-500 dark:text-gray-400">#{{ .Issue.IssueId }}</span>
       </h1>
     </header>

appview/pages/templates/repo/issues/issues.html

···
           href="/{{ $.RepoInfo.FullName }}/issues/{{ .IssueId }}"
           class="no-underline hover:underline"
           >
-          {{ .Title }}
+          {{ .Title | description }}
           <span class="text-gray-500">#{{ .IssueId }}</span>
       </a>
     </div>

appview/pages/templates/repo/pulls/fragments/pullHeader.html

···
 {{ define "repo/pulls/fragments/pullHeader" }}
 <header class="pb-4">
     <h1 class="text-2xl dark:text-white">
-        {{ .Pull.Title }}
+        {{ .Pull.Title | description }}
         <span class="text-gray-500 dark:text-gray-400">#{{ .Pull.PullId }}</span>
     </h1>
 </header>

appview/pages/templates/repo/pulls/fragments/summarizedPullHeader.html

···
         </div>
         <span class="truncate text-sm text-gray-800 dark:text-gray-200">
           <span class="text-gray-500 dark:text-gray-400">#{{ .PullId }}</span>
-          {{ .Title }}
+          {{ .Title | description }}
         </span>
       </div>
 

appview/pages/templates/repo/pulls/pull.html

···
                    {{ end }}
                  </div>
                  <div class="flex items-center">
-                   <span>{{ .Title }}</span>
+                   <span>{{ .Title | description }}</span>
                    {{ if gt (len .Body) 0 }}
                    <button
                        class="py-1/2 px-1 mx-2 bg-gray-200 hover:bg-gray-400 rounded dark:bg-gray-700 dark:hover:bg-gray-600"

appview/pages/templates/repo/pulls/pulls.html

···
             <div class="px-6 py-4 z-5">
                 <div class="pb-2">
                     <a href="/{{ $.RepoInfo.FullName }}/pulls/{{ .PullId }}" class="dark:text-white">
-                        {{ .Title }}
+                        {{ .Title | description }}
                         <span class="text-gray-500 dark:text-gray-400">#{{ .PullId }}</span>
                     </a>
                 </div>

appview/pages/templates/user/fragments/repoCard.html

···
       </div>
       {{ with .Description }}
         <div class="text-gray-600 dark:text-gray-300 text-sm">
-          {{ . }}
+          {{ . | description }}
         </div>
       {{ end }}
 

appview/pulls/pulls.go

···
 	"tangled.sh/tangled.sh/core/appview/notify"
 	"tangled.sh/tangled.sh/core/appview/oauth"
 	"tangled.sh/tangled.sh/core/appview/pages"
+	"tangled.sh/tangled.sh/core/appview/pages/markup"
 	"tangled.sh/tangled.sh/core/appview/reporesolver"
 	"tangled.sh/tangled.sh/core/idresolver"
 	"tangled.sh/tangled.sh/core/knotclient"
···
 		if isPatchBased && !patchutil.IsFormatPatch(patch) {
 			if title == "" {
 				s.pages.Notice(w, "pull", "Title is required for git-diff patches.")
+				return
+			}
+			sanitizer := markup.NewSanitizer()
+			if st := strings.TrimSpace(sanitizer.SanitizeDescription(title)); (st) == "" {
+				s.pages.Notice(w, "pull", "Title is empty after HTML sanitization")
 				return
 			}
 		}