chore(ipns): align implicit default ttl with specs

lowering TTL to 5m due to ipfs/specs#492
lifetime is validity of signature, and that should be fine up to 48h,
to match DHT expiration window

packages/ipns/src/index.ts

@@ -284,10 +284,10 @@ const log = logger('helia:ipns')
 const MINUTE = 60 * 1000
 const HOUR = 60 * MINUTE
 
-const DEFAULT_LIFETIME_MS = 24 * HOUR
+const DEFAULT_LIFETIME_MS = 48 * HOUR
 const DEFAULT_REPUBLISH_INTERVAL_MS = 23 * HOUR
 
-const DEFAULT_TTL_NS = BigInt(HOUR) * 1_000_000n
+const DEFAULT_TTL_NS = BigInt(MINUTE) * 5_000_000n // 5 minutes
 
 export type PublishProgressEvents =
   ProgressEvent<'ipns:publish:start'> |
@@ -311,7 +311,7 @@ export type ResolveDNSLinkProgressEvents =
 
 export interface PublishOptions extends AbortOptions, ProgressOptions<PublishProgressEvents | IPNSRoutingEvents> {
   /**
-   * Time duration of the record in ms (default: 24hrs)
+   * Time duration of the signature validity in ms (default: 48hrs)
    */
   lifetime?: number
 
@@ -327,7 +327,7 @@ export interface PublishOptions extends AbortOptions, ProgressOptions<PublishPro
   v1Compatible?: boolean
 
   /**
-   * The TTL of the record in ms (default: 1 hour)
+   * The TTL of the record in ms (default: 5 minutes)
    */
   ttl?: number
 }

packages/ipns/test/publish.spec.ts

@@ -45,7 +45,7 @@ describe('publish', () => {
     const ipnsEntry = await name.publish(key, cid)
 
     expect(ipnsEntry).to.have.property('sequence', 1n)
-    expect(ipnsEntry).to.have.property('ttl', 3_600_000_000_000n) // 1 hour
+    expect(ipnsEntry).to.have.property('ttl', 300_000_000_000n) // 5 minutes
   })
 
   it('should publish an IPNS record with a custom lifetime params', async function () {