shared: live-CBOR for deferred builders (Reclaim, RetireAdvert)

Closes 2/4 builders from the M1-F-D-defer list (postAdvert already live in
7ea7328; updateAdvert and release remain).

Reclaim:
- buildLiveTxForReclaim in liveCbor.ts (mirrors buildLiveTxForAccept):
  spends the escrow UTxO with REDEEMER_RECLAIM (Constr3), pays
  payment + buyer_bond + supplier_bond to buyer, delegates UPLC eval
  to Ogmios via localUPLCEval:false. Validity range = tipMs ± 60s.
- reclaim.ts: replace the unconditional mockSlotToWallclockMs tipMs
  computation with `isLive ? Date.now() : mockSlotToWallclockMs(tipSlot)`,
  matching accept.ts:77. Adds the live-CBOR dispatch branch.

Funds-at-risk before this fix: with the broken tipMs path, every live
Reclaim was rejected client-side ("tip < deliver_by" using a Nov-1970
tip). If a supplier never Claimed, buyer's 6-7 AP3X stayed locked
indefinitely. Verified recovery of 4 stuck escrows on Vector L2 testnet
(txs f6660e52, 769f16fd, 79970d86, 9f4db14b — 14 AP3X total recovered).

RetireAdvert:
- buildLiveTxForRetireAdvert in liveCbor.ts: spends advert UTxO with
  REDEEMER_RETIRE_ADVERT (Constr2), advert script address.
- retireAdvert.ts: live-CBOR dispatch.
- supplier CLI: retire-advert.ts + retireAdvertFlow.ts.
- supplier/package.json: tx:retire-advert script.

Indexer:
- follower/blockProcessor + worker: handle RetireAdvert events,
  transition advert row state to Retired.
- db/cache.ts: markAdvertTerminal helper.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

indexer/src/db/cache.ts

@@ -168,6 +168,16 @@ export class SqliteCache {
     return row ?? null;
   }
 
+  /** Mark an advertisement row as Retired. Called when the indexer observes
+   * a RetireAdvert spend (advert UTxO spent with no continuing output at
+   * the advert script address). Drops the row out of listActiveAdvertisements
+   * which filters on `status = 'Active'`. */
+  markAdvertisementRetired(utxoRef: string): void {
+    this.db.prepare(
+      `UPDATE advertisements SET status = 'Retired' WHERE utxo_ref = ?`
+    ).run(utxoRef);
+  }
+
   listActiveAdvertisements(filter?: { capability_id?: string; supplier_pkh?: string }): AdvertRow[] {
     let sql = `SELECT * FROM advertisements WHERE status = 'Active' AND rolled_back = 0`;
     const params: unknown[] = [];

indexer/src/follower/worker.ts

@@ -192,6 +192,10 @@ export class ChainSyncWorker extends EventEmitter {
       } catch {
         // already warned by processBlock
       }
+    } else if (event.type === "RetireAdvert") {
+      // The advert UTxO was spent with no continuing output → flip the row's
+      // status to Retired so listActiveAdvertisements drops it.
+      this.cache.markAdvertisementRetired(event.utxoRef);
     } else if (event.type === "PostEscrow" || event.type === "ClaimEscrow" || event.type === "SubmitEscrow") {
       try {
         const d = decodeEscrowDatum(event.datumHex);