Initial import of LogDarioSeq baseline

Establishes version control for the personal Logseq DB fork before
starting the server-client architecture migration and domain features
described in docs/agent-guide and the approved implementation plan.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

cli/spec/commands/example.mli

@@ -0,0 +1,15 @@
+type opts = { selector : string Rrbvec.t }
+type parsed = Parsed_example of opts
+
+type action = {
+  selector : string;
+  selector_path : string Rrbvec.t;
+  matched_commands : string Rrbvec.t;
+  examples : string Rrbvec.t;
+  message : string;
+}
+
+val resolve_selector :
+  Command_registry.t -> string Rrbvec.t -> action Error.build_result
+
+include Command_spec.S with type parsed := parsed and type action := action