chore: update admin apis

internal/model/admin.go

@@ -19,6 +19,11 @@ type AdminUser struct {
 	BannedAt        *time.Time `json:"banned_at"`
 	PostCount       int        `json:"post_count"`
 	CreatedAt       time.Time  `json:"created_at"`
+
+	// Connected auth methods. HasPassword means email+password login is set up;
+	// Providers lists linked OAuth providers (e.g. "google", "facebook").
+	HasPassword bool     `json:"has_password"`
+	Providers   []string `json:"providers"`
 }
 
 // AdminPost is a row in the admin posts table.

internal/repository/admin_repo.go

@@ -37,6 +37,9 @@ func (r *AdminRepo) ListUsers(ctx context.Context, q string, limit, offset int)
 		       u.email_verified_at, u.banned_at,
 		       (SELECT COUNT(*) FROM posts p WHERE p.user_id = u.id AND p.deleted_at IS NULL) AS post_count,
 		       u.created_at,
+		       (u.password_hash IS NOT NULL) AS has_password,
+		       (SELECT COALESCE(array_agg(oa.provider ORDER BY oa.provider), ARRAY[]::text[])
+		          FROM oauth_accounts oa WHERE oa.user_id = u.id) AS providers,
 		       COUNT(*) OVER() AS total
 		FROM users u
 		WHERE ($1 = '' OR u.name ILIKE '%'||$1||'%' OR u.handle ILIKE '%'||$1||'%'
@@ -53,7 +56,8 @@ func (r *AdminRepo) ListUsers(ctx context.Context, q string, limit, offset int)
 	for rows.Next() {
 		var u model.AdminUser
 		if err := rows.Scan(&u.ID, &u.Email, &u.Handle, &u.Name, &u.AvatarURL,
-			&u.Role, &u.Plan, &u.EmailVerifiedAt, &u.BannedAt, &u.PostCount, &u.CreatedAt, &total); err != nil {
+			&u.Role, &u.Plan, &u.EmailVerifiedAt, &u.BannedAt, &u.PostCount, &u.CreatedAt,
+			&u.HasPassword, &u.Providers, &total); err != nil {
 			return nil, 0, fmt.Errorf("scan admin user: %w", err)
 		}
 		out = append(out, u)
@@ -178,8 +182,9 @@ func (r *AdminRepo) ListFeedback(ctx context.Context, status string, limit, offs
 	return out, total, rows.Err()
 }
 
-// SaveReply stores an admin reply on a feedback row, stamps replied_at, and
-// resolves it (if not already). It returns the recipient's email (the
+// SaveReply stores an admin reply on a feedback row and stamps replied_at. It
+// does NOT change resolved_at — replying and resolving are independent actions
+// (resolve via ResolveFeedback). It returns the recipient's email (the
 // submitter's account email, else the anonymous contact_email — may be nil if
 // neither is known) and name so the caller can send the reply email. ok is
 // false when the id doesn't exist.
@@ -187,8 +192,7 @@ func (r *AdminRepo) SaveReply(ctx context.Context, id, message string) (email *s
 	err = r.pg.Pool.QueryRow(ctx, `
 		UPDATE feedback f
 		SET reply_message = $2,
-		    replied_at = now(),
-		    resolved_at = COALESCE(resolved_at, now())
+		    replied_at = now()
 		WHERE f.id = $1
 		RETURNING COALESCE((SELECT email FROM users WHERE id = f.user_id), f.contact_email),
 		          COALESCE((SELECT name FROM users WHERE id = f.user_id), '')`,

internal/service/admin_service.go

@@ -88,9 +88,10 @@ func (s *AdminService) NotifyUser(ctx context.Context, userID, title, body strin
 	return s.notif.NotifyAdminMessage(ctx, userID, title, body)
 }
 
-// ReplyFeedback stores the reply (resolving the row) and emails it to the
-// submitter when an address is known. Returns found=false if the id is
-// unknown, and emailed=true when a reply email was actually sent.
+// ReplyFeedback stores the reply and emails it to the submitter when an
+// address is known. It does not resolve the row (resolve is a separate
+// action). Returns found=false if the id is unknown, and emailed=true when a
+// reply email was actually sent.
 func (s *AdminService) ReplyFeedback(ctx context.Context, id, message string) (found, emailed bool, err error) {
 	email, name, ok, err := s.repo.SaveReply(ctx, id, message)
 	if err != nil || !ok {