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/platform/node/dune

@@ -0,0 +1,7 @@
+(library
+ (name logseq_cli_platform_node)
+ (implements logseq_cli_platform_spec)
+ (modes melange)
+ (preprocess
+  (pps melange.ppx))
+ (libraries melange-fetch melange.js melange.node rrbvec))