fix(store): correct PostgreSQL placeholder generation in IN clauses

Fixes a regression introduced in v0.25.2 where PostgreSQL IN clause
placeholders were not properly incremented, causing all parameters to
use the same placeholder index (e.g., $1, $1, $1 instead of $1, $2, $3).

This bug affected:
- ListReactions (ContentIDList) - caused "failed to list reactions" errors
- ListAttachments (MemoIDList)
- ListMemos (IDList and UIDList)

The fix combines placeholder generation and argument appending into a
single loop to ensure proper incrementing.

Fixes #5188

🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>

store/db/postgres/attachment.go

@@ -59,13 +59,11 @@ func (d *DB) ListAttachments(ctx context.Context, find *store.FindAttachment) ([
 	}
 	if len(find.MemoIDList) > 0 {
 		holders := make([]string, 0, len(find.MemoIDList))
-		for range find.MemoIDList {
-			holders = append(holders, placeholder(len(args)+1))
-		}
-		where = append(where, "resource.memo_id IN ("+strings.Join(holders, ", ")+")")
 		for _, id := range find.MemoIDList {
+			holders = append(holders, placeholder(len(args)+1))
 			args = append(args, id)
 		}
+		where = append(where, "resource.memo_id IN ("+strings.Join(holders, ", ")+")")
 	}
 	if find.HasRelatedMemo {
 		where = append(where, "resource.memo_id IS NOT NULL")

store/db/postgres/memo.go

@@ -53,26 +53,22 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 	}
 	if len(find.IDList) > 0 {
 		holders := make([]string, 0, len(find.IDList))
-		for range find.IDList {
-			holders = append(holders, placeholder(len(args)+1))
-		}
-		where = append(where, "memo.id IN ("+strings.Join(holders, ", ")+")")
 		for _, id := range find.IDList {
+			holders = append(holders, placeholder(len(args)+1))
 			args = append(args, id)
 		}
+		where = append(where, "memo.id IN ("+strings.Join(holders, ", ")+")")
 	}
 	if v := find.UID; v != nil {
 		where, args = append(where, "memo.uid = "+placeholder(len(args)+1)), append(args, *v)
 	}
 	if len(find.UIDList) > 0 {
 		holders := make([]string, 0, len(find.UIDList))
-		for range find.UIDList {
-			holders = append(holders, placeholder(len(args)+1))
-		}
-		where = append(where, "memo.uid IN ("+strings.Join(holders, ", ")+")")
 		for _, uid := range find.UIDList {
+			holders = append(holders, placeholder(len(args)+1))
 			args = append(args, uid)
 		}
+		where = append(where, "memo.uid IN ("+strings.Join(holders, ", ")+")")
 	}
 	if v := find.CreatorID; v != nil {
 		where, args = append(where, "memo.creator_id = "+placeholder(len(args)+1)), append(args, *v)

store/db/postgres/reaction.go

@@ -36,15 +36,11 @@ func (d *DB) ListReactions(ctx context.Context, find *store.FindReaction) ([]*st
 	}
 	if len(find.ContentIDList) > 0 {
 		holders := make([]string, 0, len(find.ContentIDList))
-		for range find.ContentIDList {
-			holders = append(holders, placeholder(len(args)+1))
-		}
-		if len(holders) > 0 {
-			where = append(where, "content_id IN ("+strings.Join(holders, ", ")+")")
 		for _, id := range find.ContentIDList {
+			holders = append(holders, placeholder(len(args)+1))
 			args = append(args, id)
 		}
-		}
+		where = append(where, "content_id IN ("+strings.Join(holders, ", ")+")")
 	}
 
 	rows, err := d.db.QueryContext(ctx, `