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>

deps/graph-parser/test/resources/exporter-test-graph/pages/hls__Understanding EXPLAIN.md

@@ -0,0 +1,20 @@
+file:: [Understanding EXPLAIN.pdf](../../book/it/Understanding EXPLAIN.pdf)
+file-path:: ../../book/it/Understanding EXPLAIN.pdf
+
+- EXPLAIN is a really nice command that gives you lots of information but it's often easy to not know what to do with all this
+  ls-type:: annotation
+  hl-page:: 6
+  hl-color:: yellow
+  id:: 697874ba-26e9-4e8a-a55d-0639d337dcc6
+- [:span]
+  ls-type:: annotation
+  hl-page:: 8
+  hl-color:: green
+  id:: 69787518-9eb8-4fd0-ad3b-b394e28bb547
+  hl-type:: area
+  hl-stamp:: 1769501975346
+- Conclusion
+  ls-type:: annotation
+  hl-page:: 42
+  hl-color:: blue
+  id:: 69787540-7a52-40af-a70a-cedd315934cf