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/lib/selector.ml

@@ -0,0 +1,26 @@
+type block =
+  | Block_id of Cli_primitive.db_id
+  | Block_uuid of Cli_primitive.uuid
+
+type page =
+  | Page_id of Cli_primitive.db_id
+  | Page_name of string
+  | Page_uuid of Cli_primitive.uuid
+
+type property =
+  | Property_id of Cli_primitive.db_id
+  | Property_ident of Cli_primitive.keyword
+  | Property_name of string
+  | Property_uuid of Cli_primitive.uuid
+
+type tag =
+  | Tag_id of Cli_primitive.db_id
+  | Tag_name of string
+  | Tag_ident of Cli_primitive.keyword
+  | Tag_uuid of Cli_primitive.uuid
+
+type entity =
+  | Entity_id of Cli_primitive.db_id
+  | Entity_uuid of Cli_primitive.uuid
+  | Entity_ident of Cli_primitive.keyword
+  | Entity_name of string