docs(cli): add per-command CLI pages

docs/cli/sessions.md

@@ -0,0 +1,16 @@
+---
+summary: "CLI reference for `clawdbot sessions` (list stored sessions + usage)"
+read_when:
+  - You want to list stored sessions and see recent activity
+---
+
+# `clawdbot sessions`
+
+List stored conversation sessions.
+
+```bash
+clawdbot sessions
+clawdbot sessions --active 120
+clawdbot sessions --json
+```
+