fix(inbox): archive all items for the same issue instead of just one

The inbox UI deduplicates items by issue_id (showing only the latest
notification per issue). Previously, clicking archive only archived the
single visible item, so older items for the same issue would reappear.

Now archiving operates at the issue level — both the backend and frontend
archive all inbox items sharing the same issue_id.

server/internal/handler/inbox.go

@@ -143,10 +143,21 @@ func (h *Handler) ArchiveInboxItem(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	// Archive all sibling inbox items for the same issue (issue-level archive)
+	if item.IssueID.Valid {
+		h.Queries.ArchiveInboxByIssue(r.Context(), db.ArchiveInboxByIssueParams{
+			WorkspaceID:   item.WorkspaceID,
+			RecipientType: item.RecipientType,
+			RecipientID:   item.RecipientID,
+			IssueID:       item.IssueID,
+		})
+	}
+
 	userID := requestUserID(r)
 	workspaceID := uuidToString(item.WorkspaceID)
 	h.publish(protocol.EventInboxArchived, workspaceID, "member", userID, map[string]any{
 		"item_id":      uuidToString(item.ID),
+		"issue_id":     uuidToPtr(item.IssueID),
 		"recipient_id": uuidToString(item.RecipientID),
 	})
 

server/pkg/db/generated/inbox.sql.go

@@ -66,6 +66,31 @@ func (q *Queries) ArchiveCompletedInbox(ctx context.Context, arg ArchiveComplete
 	return result.RowsAffected(), nil
 }
 
+const archiveInboxByIssue = `-- name: ArchiveInboxByIssue :execrows
+UPDATE inbox_item SET archived = true
+WHERE workspace_id = $1 AND recipient_type = $2 AND recipient_id = $3 AND issue_id = $4 AND archived = false
+`
+
+type ArchiveInboxByIssueParams struct {
+	WorkspaceID   pgtype.UUID `json:"workspace_id"`
+	RecipientType string      `json:"recipient_type"`
+	RecipientID   pgtype.UUID `json:"recipient_id"`
+	IssueID       pgtype.UUID `json:"issue_id"`
+}
+
+func (q *Queries) ArchiveInboxByIssue(ctx context.Context, arg ArchiveInboxByIssueParams) (int64, error) {
+	result, err := q.db.Exec(ctx, archiveInboxByIssue,
+		arg.WorkspaceID,
+		arg.RecipientType,
+		arg.RecipientID,
+		arg.IssueID,
+	)
+	if err != nil {
+		return 0, err
+	}
+	return result.RowsAffected(), nil
+}
+
 const archiveInboxItem = `-- name: ArchiveInboxItem :one
 UPDATE inbox_item SET archived = true
 WHERE id = $1

server/pkg/db/queries/inbox.sql

@@ -32,6 +32,10 @@ UPDATE inbox_item SET archived = true
 WHERE id = $1
 RETURNING *;
 
+-- name: ArchiveInboxByIssue :execrows
+UPDATE inbox_item SET archived = true
+WHERE workspace_id = $1 AND recipient_type = $2 AND recipient_id = $3 AND issue_id = $4 AND archived = false;
+
 -- name: CountUnreadInbox :one
 SELECT count(*) FROM inbox_item
 WHERE workspace_id = $1 AND recipient_type = $2 AND recipient_id = $3 AND read = false AND archived = false;