chore: initialize Gitea v1.27.2 fork

Includes direct password setup links in registration emails.

Assisted-by: Codex:GPT-5

routers/web/repo/topic.go

@@ -0,0 +1,60 @@
+// Copyright 2018 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package repo
+
+import (
+	"net/http"
+	"strings"
+
+	repo_model "gitea.dev/models/repo"
+	"gitea.dev/modules/log"
+	"gitea.dev/services/context"
+)
+
+// TopicsPost response for creating repository
+func TopicsPost(ctx *context.Context) {
+	if ctx.Doer == nil {
+		ctx.JSON(http.StatusForbidden, map[string]any{
+			"message": "Only owners could change the topics.",
+		})
+		return
+	}
+
+	topics := make([]string, 0)
+	topicsStr := ctx.FormTrim("topics")
+	if len(topicsStr) > 0 {
+		topics = strings.Split(topicsStr, ",")
+	}
+
+	validTopics, invalidTopics := repo_model.SanitizeAndValidateTopics(topics)
+
+	if len(validTopics) > 25 {
+		ctx.JSON(http.StatusUnprocessableEntity, map[string]any{
+			"invalidTopics": nil,
+			"message":       ctx.Tr("repo.topic.count_prompt"),
+		})
+		return
+	}
+
+	if len(invalidTopics) > 0 {
+		ctx.JSON(http.StatusUnprocessableEntity, map[string]any{
+			"invalidTopics": invalidTopics,
+			"message":       ctx.Tr("repo.topic.format_prompt"),
+		})
+		return
+	}
+
+	err := repo_model.SaveTopics(ctx, ctx.Repo.Repository.ID, validTopics...)
+	if err != nil {
+		log.Error("SaveTopics failed: %v", err)
+		ctx.JSON(http.StatusInternalServerError, map[string]any{
+			"message": "Save topics failed.",
+		})
+		return
+	}
+
+	ctx.JSON(http.StatusOK, map[string]any{
+		"status": "ok",
+	})
+}