audit: drop inflated framework adapter count from README

'11 framework adapters' was wrong: src/adapters/ has 13 .ts files, of which
only 8 are framework adapters (CrewAI, LangChain, ADK, A2A, MCP, OpenShell,
IBAC, Gonka). The remainder are governance plumbing (gateway-reporter,
governance-hook, mutual-auth-a2a, mutual-auth-mcp).

Per the OpenSSF TAC reviewer pattern (ossf/tac#603): list the adapters
explicitly rather than asserting a count, since exact counts age and invite
fact-check failures.

Author: aeoess

README.md

@@ -143,7 +143,7 @@ The composition contract specifies how a verifier MUST cross-check per-request s
 
 ## Numbers
 
-2,545 tests. 8 protocol layers. 11 framework adapters. Gateway evaluation under 2ms. Zero heavy dependencies. Apache-2.0.
+2,545 tests. 8 protocol layers. Framework adapters for CrewAI, LangChain, ADK, A2A, MCP, OpenShell, IBAC, Gonka. Gateway evaluation under 2ms. Zero heavy dependencies. Apache-2.0.
 
 ## Papers