Drop the Comp AI CRM acknowledgement

Nothing in PIG derives from that repository. The fact model, the leased
agent task queue and the `agentBrief` field are our own designs, and MIT's
attribution condition reaches copied source, not ideas — so the credit was
a courtesy that misstated where this code came from.

The one line worth keeping was never a credit: AGENTS.md's rule against
lifting component files out of somebody else's repo. It is restated
generically, and the shadcn-from-upstream guidance stays.

Buzz keeps its NOTICE entry.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

README.md

@@ -586,6 +586,5 @@ will be removed.
 ## Licence
 
 Apache License 2.0 — see [LICENSE](./LICENSE) and [NOTICE](./NOTICE). The
-architectural debts to [Comp AI CRM](https://github.com/trycompai/crm) (MIT)
-and [Buzz](https://github.com/block/buzz) (Apache-2.0) are credited in NOTICE.
-No source code was copied from either.
+architectural debt to [Buzz](https://github.com/block/buzz) (Apache-2.0) is
+credited in NOTICE. No source code was copied from it.