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/entity.ml

@@ -0,0 +1,30 @@
+type kind = Page | Block | Tag | Property | Task | Asset | Unknown
+
+type t = {
+  id : Cli_primitive.db_id option;
+  uuid : Cli_primitive.uuid option;
+  ident : Cli_primitive.keyword option;
+  name : string option;
+  title : string option;
+  kind : kind;
+  tags : Cli_primitive.keyword Rrbvec.t;
+  created_at : Js.Date.t option;
+  updated_at : Js.Date.t option;
+  deleted_at : Js.Date.t option;
+  raw : Melange_edn_melange.any;
+}
+
+let of_value raw =
+  {
+    id = Edn_util.get_int64 raw "db/id";
+    uuid = Edn_util.get_string raw "block/uuid";
+    ident = Option.bind (Edn_util.get raw "db/ident") Edn_util.as_keyword_t;
+    name = Edn_util.get_string raw "name";
+    title = Edn_util.get_string raw "block/title";
+    kind = Unknown;
+    tags = Vec.empty;
+    created_at = None;
+    updated_at = None;
+    deleted_at = None;
+    raw;
+  }