refactor: reuse the existing service and rendering helpers

services.IsNotFound replaces the hand-rolled 404 checks, convertPage
the copied page conversions and lastPathNumber the comment's own
number parser. The List wrappers around ListPage of releases,
branches, wiki pages, secrets and variables go, pull request filters
resolve milestones through Milestones.FindOne like issues, and
localFlagsChanged, boolOrder, Cell.Render, stateBadge and dueText
replace their copies.

Signed-off-by: bircni <bircni@icloud.com>

internal/services/comments.go

@@ -5,7 +5,6 @@ package services
 
 import (
 	"context"
-	"path"
 	"strconv"
 
 	gitea "gitea.dev/sdk"
@@ -30,19 +29,10 @@ func commentFrom(comment *gitea.Comment) Comment {
 	return Comment{
 		ID: comment.ID, Body: comment.Body, URL: comment.HTMLURL, Author: login(comment.Poster),
 		CreatedAt: timestamp(comment.Created), UpdatedAt: timestamp(comment.Updated), Pull: comment.PRURL != "",
-		IssueNumber: discussionNumber(comment.IssueURL + comment.PRURL),
+		IssueNumber: lastPathNumber(comment.IssueURL + comment.PRURL),
 	}
 }
 
-// discussionNumber reads the number from the web URL of an issue or pull request, or returns 0.
-func discussionNumber(url string) int64 {
-	n, err := strconv.ParseInt(path.Base(url), 10, 64)
-	if err != nil {
-		return 0
-	}
-	return n
-}
-
 // Comments implements discussion comments under their owning repository resource.
 type Comments struct {
 	Client     *transport.Client