Fix social card + CLAUDE.md to say source-available, not open source

CLAUDE.md

@@ -8,7 +8,7 @@ A local MCP server that bridges Claude and Kaiser Permanente's patient portal. S
 
 ## v1 audience and distribution
 
-OpenKP v1 ships as an open-source GitHub project for **technically-curious KP members and patient-advocacy peers** — people who have Claude Code installed (or will install it) and can follow a Claude-Code-guided setup. We are deliberately not building a non-technical-user installer in v1. The `.dxt` + bundled-runtime + GUI-credential-entry work is parked at Phase 4.5 and only happens if real demand emerges.
+OpenKP v1 ships as a source-available GitHub project for **technically-curious KP members and patient-advocacy peers** — people who have Claude Code installed (or will install it) and can follow a Claude-Code-guided setup. We are deliberately not building a non-technical-user installer in v1. The `.dxt` + bundled-runtime + GUI-credential-entry work is parked at Phase 4.5 and only happens if real demand emerges.
 
 What this means for current work: