docs: name the editions Shannon, Pro, Enterprise and Community Program

Drop "Shannon Open Source" and "the Keygraph platform" as product names.
The open-source project is Shannon (Shannon OSS where a contrast helps),
and the commercial editions are Keygraph Pro and Keygraph Enterprise, plus
the Community Program. The one retired-names line now maps Shannon Lite to
Shannon and Shannon Pro to Keygraph Pro. Also covers the npm README, the
coverage and safety docs, llms.txt and the regenerated llms-full.txt.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/safety.md

@@ -43,7 +43,7 @@ Shannon currently targets exploitable vulnerabilities in these classes:
 
 Shannon's proof-by-exploitation model means it does not report issues it cannot actively exploit, such as many vulnerable dependency, insecure configuration, or broad policy findings.
 
-For broader coverage, the Keygraph platform adds black-box and white-box agentic pentesting, graph-based static analysis, SCA reachability, secrets detection, business logic testing, remediation workflows, SLA tracking, and reporting dashboards.
+For broader coverage, Keygraph Pro and Enterprise add black-box and white-box agentic pentesting, graph-based static analysis, SCA reachability, secrets detection, business logic testing, remediation workflows, SLA tracking, and reporting dashboards.
 
 ## Cost and Performance