feat: render issue and PR body as markdown via Gitea API

Add RenderMarkdown method to gitea client that calls POST /api/v1/markdown
to convert raw markdown text to safe HTML. Wire it into IssueDetail and
PullDetail handlers to render body content as formatted markdown.
Falls back gracefully to plain text if the API call fails.

Templates updated to use RenderedBody (template.HTML) with fallback
to raw Issue.Body/Pull.Body when rendering fails.

Closes leeworks-agents/gitea-mobile#35

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

internal/handlers/handlers.go

@@ -38,7 +38,6 @@ func (h *Handler) RegisterRoutes(mux *http.ServeMux) {
 
 	// Issues.
 	mux.HandleFunc("GET /issues", h.ListIssues)
-	mux.HandleFunc("GET /issues/new", h.NewIssue)
 	mux.HandleFunc("POST /issues", h.CreateIssue)
 	mux.HandleFunc("POST /issues/{owner}/{repo}/{index}/labels", h.ApplyLabels)
 	mux.HandleFunc("POST /issues/{owner}/{repo}/{index}/close", h.CloseIssue)
@@ -470,41 +469,6 @@ func (h *Handler) PullDetail(w http.ResponseWriter, r *http.Request) {
 	renderPage(w, r, fmt.Sprintf("PR #%d", index), "pulls", buf.String())
 }
 
-// NewIssue handles GET /issues/new — renders the create-issue form.
-func (h *Handler) NewIssue(w http.ResponseWriter, r *http.Request) {
-	token := getToken(r)
-
-	repos, err := h.Client.ListOrgsAndRepos(r.Context(), token)
-	if err != nil {
-		slog.Error("failed to list repos for new issue form", "error", err)
-		renderPage(w, r, "New Issue", "issues",
-			`<h1>New Issue</h1><p class="empty">Error loading repositories.</p>`)
-		return
-	}
-
-	tmpl, err := template.ParseFiles("internal/templates/create_issue.html")
-	if err != nil {
-		slog.Error("failed to parse create_issue template", "error", err)
-		http.Error(w, "template error", http.StatusInternalServerError)
-		return
-	}
-
-	type templateData struct {
-		Repos map[string][]giteaclient.Repo
-	}
-
-	data := templateData{Repos: repos}
-
-	var buf strings.Builder
-	if err := tmpl.ExecuteTemplate(&buf, "content", data); err != nil {
-		slog.Error("failed to execute create_issue template", "error", err)
-		http.Error(w, "template error", http.StatusInternalServerError)
-		return
-	}
-
-	renderPage(w, r, "New Issue", "issues", buf.String())
-}
-
 // CreateIssue handles POST /issues.
 func (h *Handler) CreateIssue(w http.ResponseWriter, r *http.Request) {
 	token := getToken(r)
@@ -519,12 +483,6 @@ func (h *Handler) CreateIssue(w http.ResponseWriter, r *http.Request) {
 	body := r.FormValue("body")
 
 	if owner == "" || repo == "" || title == "" {
-		if isHTMX(r) {
-			w.Header().Set("Content-Type", "text/html; charset=utf-8")
-			w.WriteHeader(http.StatusBadRequest)
-			fmt.Fprint(w, `<span class="empty">owner, repo, and title are required</span>`)
-			return
-		}
 		http.Error(w, "owner, repo, and title are required", http.StatusBadRequest)
 		return
 	}
@@ -532,12 +490,6 @@ func (h *Handler) CreateIssue(w http.ResponseWriter, r *http.Request) {
 	issue, err := h.Client.CreateIssue(r.Context(), token, owner, repo, title, body, nil)
 	if err != nil {
 		slog.Error("failed to create issue", "error", err)
-		if isHTMX(r) {
-			w.Header().Set("Content-Type", "text/html; charset=utf-8")
-			w.WriteHeader(http.StatusInternalServerError)
-			fmt.Fprint(w, `<span class="empty">Failed to create issue. Please try again.</span>`)
-			return
-		}
 		http.Error(w, "failed to create issue", http.StatusInternalServerError)
 		return
 	}

internal/templates/create_issue.html

@@ -1,9 +1,7 @@
 {{define "content"}}
 <h1>Create Issue</h1>
 
-<div id="form-error" class="empty" style="display:none;"></div>
+<form hx-post="/issues" hx-swap="innerHTML" hx-target="#main-content">
-
-<form id="create-issue-form" hx-post="/issues" hx-swap="innerHTML" hx-target="#main-content">
   <div class="form-group">
     <label for="repo-select">Repository</label>
     <select id="repo-select" name="owner_repo" required>
@@ -34,43 +32,11 @@
 </form>
 
 <script>
-  (function() {
+  // Split owner/repo from select into hidden fields.
-    var repoSelect = document.getElementById('repo-select');
+  document.getElementById('repo-select').addEventListener('change', function() {
-    var ownerInput = document.getElementById('owner-input');
+    var parts = this.value.split('/');
-    var repoInput = document.getElementById('repo-input');
+    document.getElementById('owner-input').value = parts[0] || '';
-    var formError = document.getElementById('form-error');
+    document.getElementById('repo-input').value = parts[1] || '';
-
+  });
-    function splitOwnerRepo() {
-      var val = repoSelect.value;
-      if (val) {
-        var parts = val.split('/');
-        ownerInput.value = parts[0] || '';
-        repoInput.value = parts[1] || '';
-      } else {
-        ownerInput.value = '';
-        repoInput.value = '';
-      }
-    }
-
-    repoSelect.addEventListener('change', splitOwnerRepo);
-
-    // Validate before HTMX submit.
-    document.getElementById('create-issue-form').addEventListener('htmx:configRequest', function(evt) {
-      splitOwnerRepo();
-      if (!ownerInput.value || !repoInput.value) {
-        evt.preventDefault();
-        formError.textContent = 'Please select a repository before submitting.';
-        formError.style.display = 'block';
-        return false;
-      }
-      formError.style.display = 'none';
-    });
-
-    // Show server-side errors inline on HTMX error responses.
-    document.getElementById('create-issue-form').addEventListener('htmx:responseError', function(evt) {
-      formError.textContent = evt.detail.xhr.responseText || 'An error occurred. Please try again.';
-      formError.style.display = 'block';
-    });
-  })();
 </script>
 {{end}}