Major clean up and improvements to vimwiki compatibility and documentation.

Reviewed-on: #1

crates/nuwiki-lsp/tests/html_export.rs

@@ -1,4 +1,4 @@
-//! Phase 17: HTML export commands.
+//! HTML export commands.
 //!
 //! Drives the pure `export::*` helpers directly. The side-effecting
 //! `export_ops::write_page` / `write_rss` paths get exercised via a
@@ -474,7 +474,7 @@ fn write_rss_emits_valid_xml_with_entries() {
 // ===== COMMANDS list completeness =====
 
 #[test]
-fn commands_list_includes_phase17_entries() {
+fn commands_list_includes_export_entries() {
     let names: Vec<&str> = nuwiki_lsp::commands::COMMANDS.to_vec();
     for name in [
         "nuwiki.export.currentToHtml",