fix(parity): close the 2026-06-02 re-audit config/command findings

Implements the remaining fourth-pass findings (gap doc updated):

- list_margin: rework to upstream's buffer-side meaning. Drop the
  nuwiki-only HTML em-margin (renderer field/method + render_page_html
  param removed) and prepend max(0, list_margin) leading spaces to every
  generated bullet in build_toc_text / build_links_text /
  build_tag_links_text / diary::build_index_body; headings stay at col 0.
  From<RawWiki> derives 0 for markdown wikis when unset. Negatives can't
  resolve 'shiftwidth' server-side, so they collapse to zero indent
  (documented divergence).

- diary_months: per-wiki Vec<String> (default 12 English names), threaded
  into the diary-index month labels; missing/empty slots fall back to the
  English name.

- diary_caption_level: widen u8 -> i8 so vimwiki's -1 (min: -1) parses;
  build_index_body clamps < 0 to base tree level 0.

- VimwikiRemoveDone: regain upstream's -range. All four defs are now
  -bang -range, dispatched via remove_done(bang, range, l1, l2) in both
  clients: ! -> whole buffer, explicit range -> new list_remove_done_range
  ({range:[l1-1,l2-1]}), else current list. Server remove_done_edit gained
  an Option<(u32,u32)> range that filters whole-doc victims by start line.

markdown_header_style is deferred: the generators emit vimwiki syntax only
(caption_line never writes markdown headers), so there's no markdown header
to attach the style to. Logged as the "generated-content is vimwiki-only"
intentional divergence pending a later markdown generated-content effort.

Tests: list_margin indent, markdown list_margin-0 default, diary_months
custom + fallback, negative caption_level clamp/parse, ranged remove-done
(server + both keymap harnesses). 553 lsp/core tests pass; clippy clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/nuwiki-lsp/tests/link_health.rs

@@ -290,7 +290,7 @@ fn build_toc_text_nests_by_level() {
         (2u8, "Sub".into(), "sub".into()),
         (1u8, "Other".into(), "other".into()),
     ];
-    let out = ops::build_toc_text(&items, "Contents", 1);
+    let out = ops::build_toc_text(&items, "Contents", 1, 0);
     assert!(out.starts_with("= Contents =\n"));
     let lines: Vec<&str> = out.lines().collect();
     assert_eq!(lines[0], "= Contents =");
@@ -301,7 +301,7 @@ fn build_toc_text_nests_by_level() {
 
 #[test]
 fn build_toc_text_with_no_headings_is_just_the_heading() {
-    let out = ops::build_toc_text(&[], "Contents", 1);
+    let out = ops::build_toc_text(&[], "Contents", 1, 0);
     assert_eq!(out, "= Contents =\n");
 }
 
@@ -319,7 +319,8 @@ fn links_rebuild_edit_only_acts_when_section_present() {
             &pages,
             true,
             "Generated Links",
-            1
+            1,
+            0
         )
         .is_none(),
         "must not insert a links section into a page that lacks one"
@@ -333,7 +334,8 @@ fn links_rebuild_edit_only_acts_when_section_present() {
         &pages,
         true,
         "Generated Links",
-        1
+        1,
+        0
     )
     .is_some());
 }
@@ -358,15 +360,42 @@ fn find_section_range_stops_at_same_level_sibling() {
 #[test]
 fn captions_honour_custom_header_and_level() {
     // toc_header="Table of Contents", level 2 → `== Table of Contents ==`.
-    let out = ops::build_toc_text(&[], "Table of Contents", 2);
+    let out = ops::build_toc_text(&[], "Table of Contents", 2, 0);
     assert_eq!(out, "== Table of Contents ==\n");
     // links_header at level 3.
     let pages = vec!["A".to_string(), "B".to_string()];
-    let links = ops::build_links_text(&pages, "All Pages", 3, None);
+    let links = ops::build_links_text(&pages, "All Pages", 3, None, 0);
     assert!(links.starts_with("=== All Pages ===\n"));
     // level clamps to 1..=6.
-    assert!(ops::build_toc_text(&[], "X", 9).starts_with("====== X ======"));
-    assert!(ops::build_toc_text(&[], "X", 0).starts_with("= X ="));
+    assert!(ops::build_toc_text(&[], "X", 9, 0).starts_with("====== X ======"));
+    assert!(ops::build_toc_text(&[], "X", 0, 0).starts_with("= X ="));
+}
+
+#[test]
+fn list_margin_indents_generated_bullets_not_headings() {
+    // vimwiki `list_margin` = leading spaces before each generated bullet.
+    // The heading stays at column 0; bullets get `margin` spaces (TOC keeps
+    // its per-depth nesting *after* the base margin).
+    let pages = vec!["A".to_string(), "B".to_string()];
+    let links = ops::build_links_text(&pages, "Generated Links", 1, None, 2);
+    assert!(links.contains("\n  - [[A]]\n"), "2-space margin: {links:?}");
+    assert!(
+        links.starts_with("= Generated Links =\n"),
+        "heading unindented: {links:?}"
+    );
+
+    let toc = ops::build_toc_text(
+        &[
+            (1, "Top".into(), "top".into()),
+            (2, "Sub".into(), "sub".into()),
+        ],
+        "Contents",
+        1,
+        2,
+    );
+    // Top bullet: 2-space margin; Sub bullet: margin + one nesting level.
+    assert!(toc.contains("\n  - [[#top|Top]]\n"), "top margin: {toc:?}");
+    assert!(toc.contains("\n    - [[#sub|Sub]]\n"), "nested: {toc:?}");
 }
 
 // ===== Links text generation =====
@@ -374,7 +403,7 @@ fn captions_honour_custom_header_and_level() {
 #[test]
 fn build_links_text_excludes_current_page() {
     let pages = vec!["A".to_string(), "Home".to_string(), "B".to_string()];
-    let out = ops::build_links_text(&pages, "Generated Links", 1, Some("Home"));
+    let out = ops::build_links_text(&pages, "Generated Links", 1, Some("Home"), 0);
     let lines: Vec<&str> = out.lines().collect();
     assert_eq!(lines[0], "= Generated Links =");
     assert!(lines.contains(&"- [[A]]"));
@@ -385,7 +414,7 @@ fn build_links_text_excludes_current_page() {
 #[test]
 fn build_links_text_no_excludes_includes_all() {
     let pages = vec!["A".to_string(), "B".to_string()];
-    let out = ops::build_links_text(&pages, "Generated Links", 1, None);
+    let out = ops::build_links_text(&pages, "Generated Links", 1, None, 0);
     assert!(out.contains("[[A]]"));
     assert!(out.contains("[[B]]"));
 }
@@ -423,7 +452,7 @@ fn toc_edit_inserts_at_top_when_no_existing_toc() {
     let src = "= One =\n== Two ==\n";
     let ast = parse(src);
     let uri = Url::parse("file:///tmp/page.wiki").unwrap();
-    let edit = ops::toc_edit(src, &ast, &uri, true, "Contents", 1).expect("got an edit");
+    let edit = ops::toc_edit(src, &ast, &uri, true, "Contents", 1, 0).expect("got an edit");
     let changes = edit.changes.expect("changes map");
     let edits = &changes[&uri];
     assert_eq!(edits.len(), 1);
@@ -439,7 +468,7 @@ fn toc_edit_replaces_existing_toc() {
     let src = "= Contents =\n- [[#stale|Stale]]\n\n= Real =\n";
     let ast = parse(src);
     let uri = Url::parse("file:///tmp/page.wiki").unwrap();
-    let edit = ops::toc_edit(src, &ast, &uri, true, "Contents", 1).expect("got an edit");
+    let edit = ops::toc_edit(src, &ast, &uri, true, "Contents", 1, 0).expect("got an edit");
     let changes = edit.changes.expect("changes map");
     let edits = &changes[&uri];
     let te = &edits[0];
@@ -454,7 +483,7 @@ fn toc_edit_returns_none_for_empty_doc() {
     let src = "";
     let ast = parse(src);
     let uri = Url::parse("file:///tmp/empty.wiki").unwrap();
-    assert!(ops::toc_edit(src, &ast, &uri, true, "Contents", 1).is_none());
+    assert!(ops::toc_edit(src, &ast, &uri, true, "Contents", 1, 0).is_none());
 }
 
 #[test]
@@ -465,14 +494,15 @@ fn toc_rebuild_edit_only_acts_when_toc_already_present() {
     let without = "= One =\n== Two ==\n";
     let ast = parse(without);
     assert!(
-        ops::toc_rebuild_edit(without, &ast, &uri, true, "Contents", 1).is_none(),
+        ops::toc_rebuild_edit(without, &ast, &uri, true, "Contents", 1, 0).is_none(),
         "auto_toc should not insert a TOC where none existed"
     );
 
     // Existing TOC → rebuild refreshes it.
     let with = "= Contents =\n- [[#stale|Stale]]\n\n= Real =\n";
     let ast = parse(with);
-    let edit = ops::toc_rebuild_edit(with, &ast, &uri, true, "Contents", 1).expect("rebuild edit");
+    let edit =
+        ops::toc_rebuild_edit(with, &ast, &uri, true, "Contents", 1, 0).expect("rebuild edit");
     let te = &edit.changes.unwrap()[&uri][0];
     assert!(te.new_text.contains("[[#real|Real]]"));
     assert!(!te.new_text.contains("Stale"));
@@ -486,8 +516,18 @@ fn links_edit_inserts_when_section_absent() {
     let ast = parse(src);
     let uri = Url::parse("file:///tmp/page.wiki").unwrap();
     let pages = vec!["A".into(), "B".into(), "Home".into()];
-    let edit =
-        ops::links_edit(src, &ast, &uri, "Home", &pages, true, "Generated Links", 1).expect("edit");
+    let edit = ops::links_edit(
+        src,
+        &ast,
+        &uri,
+        "Home",
+        &pages,
+        true,
+        "Generated Links",
+        1,
+        0,
+    )
+    .expect("edit");
     let te = &edit.changes.unwrap()[&uri][0];
     assert!(te.new_text.contains("[[A]]"));
     assert!(te.new_text.contains("[[B]]"));
@@ -500,8 +540,18 @@ fn links_edit_replaces_when_section_present() {
     let ast = parse(src);
     let uri = Url::parse("file:///tmp/page.wiki").unwrap();
     let pages = vec!["Fresh".into()];
-    let edit =
-        ops::links_edit(src, &ast, &uri, "Home", &pages, true, "Generated Links", 1).expect("edit");
+    let edit = ops::links_edit(
+        src,
+        &ast,
+        &uri,
+        "Home",
+        &pages,
+        true,
+        "Generated Links",
+        1,
+        0,
+    )
+    .expect("edit");
     let te = &edit.changes.unwrap()[&uri][0];
     assert!(te.new_text.contains("[[Fresh]]"));
     assert!(!te.new_text.contains("Stale"));
@@ -513,7 +563,7 @@ fn links_edit_returns_none_for_empty_page_list() {
     let src = "Hi\n";
     let ast = parse(src);
     let uri = Url::parse("file:///tmp/page.wiki").unwrap();
-    assert!(ops::links_edit(src, &ast, &uri, "Home", &[], true, "Generated Links", 1).is_none());
+    assert!(ops::links_edit(src, &ast, &uri, "Home", &[], true, "Generated Links", 1, 0).is_none());
 }
 
 // ===== find_orphans =====