chore: add pnpm minimumReleaseAge supply-chain delay (#154)

Set minimumReleaseAge to 2880 minutes (48h) so newly published dependency
versions must age before install, mitigating supply-chain attacks. Exclude
our own '@humanspeak/*' scope so first-party releases are not delayed.

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: jaysin586

pnpm-workspace.yaml

@@ -1,3 +1,6 @@
 packages:
     - .
     - docs
+minimumReleaseAge: 2880
+minimumReleaseAgeExclude:
+    - '@humanspeak/*'