feat(sp28): claimAcks slice + useTailStream/useMergedTail dispatch

src/hooks/useMergedTail.ts

@@ -20,6 +20,9 @@
 // - SP25: the `id` type is widened to `string | number` because `Ack`
 //   and `Ta1Ack` use numeric database ids while `Claim` / `Remittance`
 //   use string ids. Dedup normalizes via `String(...)`.
+// - SP28: `ClaimAck` adds another numeric-id slice (`claimAcks` /
+//   `claimAckOrder`). Same dedup normalization applies — `String(id)`
+//   keeps the symmetric comparison the hook has always used.
 // ---------------------------------------------------------------------------
 
 import { useTailStore } from "@/store/tail-store";
@@ -78,6 +81,19 @@ export function useMergedTail<T extends { id: string | number }>(
         }
         return out;
       }
+      // SP28: the claim↔ack link slice. Same keyed-by-id shape as
+      // acks/ta1_acks (numeric id from the `claim_acks` table), so the
+      // dispatch is symmetric — the page-specific filter (e.g.
+      // `link.claimId === claimId`) is applied AFTER dedup so the
+      // base list's rows aren't accidentally dropped.
+      case "claim-acks": {
+        const out: unknown[] = [];
+        for (const id of s.claimAckOrder) {
+          const v = s.claimAcks[String(id)];
+          if (v !== undefined) out.push(v);
+        }
+        return out;
+      }
     }
   });