feat: add missing administration tools

Add 20+ new MCP tools for repository administration:

- Repository: get_repo, repo_write (edit/delete/transfer), list_forks
- Branch Protection: read (list/get) and write (create/edit/delete)
- Webhooks: read (list/get) and write (create/edit/delete/test)
- Collaborators: read (list) and write (add/delete)
- Deploy Keys: read (list/get) and write (create/delete)
- Topics: read (list) and write (add/delete/set)
- Compare: get_compare for branch/tag/commit comparison
- Organization: org_read (get/list_teams/get_team/list_team_members/list_team_repos)
  and org_write (create_team/delete_team/add_team_member/remove_team_member/add_team_repo/remove_team_repo)
- PR enhancements: list_files and is_merged methods added to pull_request_read

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

operation/org/slim.go

@@ -0,0 +1,85 @@
+package org
+
+import (
+	gitea_sdk "code.gitea.io/sdk/gitea"
+)
+
+func slimOrg(o *gitea_sdk.Organization) map[string]any {
+	if o == nil {
+		return nil
+	}
+	return map[string]any{
+		"id":          o.ID,
+		"username":    o.UserName,
+		"full_name":   o.FullName,
+		"description": o.Description,
+		"website":     o.Website,
+		"location":    o.Location,
+		"visibility":  o.Visibility,
+		"avatar_url":  o.AvatarURL,
+	}
+}
+
+func slimTeam(t *gitea_sdk.Team) map[string]any {
+	if t == nil {
+		return nil
+	}
+	return map[string]any{
+		"id":                         t.ID,
+		"name":                       t.Name,
+		"description":                t.Description,
+		"permission":                 t.Permission,
+		"units":                      t.Units,
+		"includes_all_repositories":  t.IncludesAllRepositories,
+		"can_create_org_repo":        t.CanCreateOrgRepo,
+	}
+}
+
+func slimTeams(teams []*gitea_sdk.Team) []map[string]any {
+	out := make([]map[string]any, 0, len(teams))
+	for _, t := range teams {
+		out = append(out, slimTeam(t))
+	}
+	return out
+}
+
+func slimUser(u *gitea_sdk.User) map[string]any {
+	if u == nil {
+		return nil
+	}
+	return map[string]any{
+		"id":         u.ID,
+		"login":      u.UserName,
+		"full_name":  u.FullName,
+		"email":      u.Email,
+		"avatar_url": u.AvatarURL,
+	}
+}
+
+func slimUsers(users []*gitea_sdk.User) []map[string]any {
+	out := make([]map[string]any, 0, len(users))
+	for _, u := range users {
+		out = append(out, slimUser(u))
+	}
+	return out
+}
+
+func slimRepos(repos []*gitea_sdk.Repository) []map[string]any {
+	out := make([]map[string]any, 0, len(repos))
+	for _, r := range repos {
+		if r == nil {
+			continue
+		}
+		m := map[string]any{
+			"id":        r.ID,
+			"full_name": r.FullName,
+			"html_url":  r.HTMLURL,
+			"private":   r.Private,
+		}
+		if r.Owner != nil {
+			m["owner"] = r.Owner.UserName
+		}
+		out = append(out, m)
+	}
+	return out
+}