Add fast-jev-compaction extension — Jev System One compaction hook (session_before_compact): prunes stale tool calls/results, keeps user/assistant text verbatim

extensions/fast-jev-compaction/src/index.ts

@@ -0,0 +1,6 @@
+export * from './types.js';
+export * from './request.js';
+export * from './client.js';
+export * from './state.js';
+export * from './compact.js';
+export * from './messages.js';