feat: expand session adapter registry with structured targets

- Registry accepts { type, value } structured targets
- Add --list-adapters and --target-type CLI flags to session-inspect
- Export adapter type from claude-history and dmux-tmux adapters
- 71 new session adapter tests, 34 new session-inspect tests
- All 1142 tests passing

scripts/lib/session-adapters/claude-history.js

@@ -114,6 +114,8 @@ function resolveSessionRecord(target, cwd) {
 function createClaudeHistoryAdapter() {
   return {
     id: 'claude-history',
+    description: 'Claude local session history and session-file snapshots',
+    targetTypes: ['claude-history', 'claude-alias', 'session-file'],
     canOpen(target, context = {}) {
       if (context.adapterId && context.adapterId !== 'claude-history') {
         return false;