parity(1): vimwiki per-wiki config keys, table colspan/rowspan,

named link commands, mouse maps

Parity audit Cluster 1 — small wins.

WikiConfig (server) extended with 14 vimwiki globals:
- `index` (`g:vimwiki_index`), wired into `:VimwikiIndex` so users
  with a custom index page stem (e.g. `home`) get the right file.
- `diary_frequency`, `diary_start_week_day`, `diary_caption_level`,
  `diary_sort`, `diary_header` — diary keys (weekly/monthly/yearly
  semantics land in Cluster 4; the keys parse now so config
  migration doesn't need to wait).
- `maxhi`, `listsyms`, `listsyms_propagate`, `list_margin`,
  `links_space_char`, `nested_syntaxes`, `auto_toc` — list +
  highlight knobs the renderer/handlers can consult.

All keys threaded through `RawWiki` → `WikiConfig::from(RawWiki)`,
defaults centralised in `wiki_defaults()` so `empty()`, `from_root()`,
the legacy single-wiki path, and the `RawWiki` impl stay in sync.

Lua front-door (`lua/nuwiki/config.lua`) now documents the multi-wiki
`wikis = {…}` shape with every accepted per-wiki key — users who
prefer Lua tables no longer have to round-trip through
`init_options` raw JSON.

HTML renderer (`crates/nuwiki-core/src/render/html.rs`):
- New `table_spans()` pre-pass resolves vimwiki's `>` (col_span) and
  `\\/` (row_span) continuation markers into proper HTML
  `colspan="N"` / `rowspan="N"` attributes on the lead cell. Continuation
  cells emit nothing, matching what browsers expect.
- The old behaviour (emitting `class="col-span"` / `class="row-span"`
  as visual markers) is gone — replaced with real merging so the
  rendered HTML matches the source semantics.

Named ex-commands:
- `:VimwikiNextLink` / `:VimwikiPrevLink` — were keymapped only
  (`<Tab>`/`<S-Tab>`); now have explicit `:` commands in both editor
  paths, dispatching to new `nuwiki.commands.link_next` / `link_prev`
  pure-Vim/Lua helpers.
- `:VimwikiBaddLink` — adds the link target's file to the buffer
  list without switching focus. Goes through
  `textDocument/definition` and runs `:badd <fname>` on the resolved
  URI.

Mouse maps (opt-in via `mappings.mouse = true` in Lua or
`g:nuwiki_mouse_mappings = 1` in Vim):
- `<2-LeftMouse>` follows, `<S-2-LeftMouse>` / `<C-2-LeftMouse>`
  follow in split/vsplit, `<MiddleMouse>` adds to buflist,
  `<RightMouse>` goes back. Mirrors upstream vimwiki's defaults.

Tests: 7 new in `parity_cluster_1.rs` covering the per-wiki config
defaults + raw JSON parse, the legacy-single-wiki path, colspan
folding into a lead cell with no leftover class markers, rowspan
across rows, no-attrs when the table has no spans, and a sanity
paragraph render. Total 421 Rust tests pass; clippy clean; both
keymap harnesses still green (20 nvim + 12 vim).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

crates/nuwiki-lsp/src/config.rs

@@ -27,6 +27,10 @@ pub struct WikiConfig {
     pub root: PathBuf,
     pub file_extension: String,
     pub syntax: String,
+    /// Stem of the wiki's index page (vimwiki's `index`, default
+    /// `"index"`). `<root>/<index><file_extension>` is what
+    /// `:VimwikiIndex` opens.
+    pub index: String,
     /// Subdirectory under `root` where diary entries live. Matches
     /// vimwiki's `g:vimwiki_diary_rel_path` (default `"diary"`).
     pub diary_rel_path: String,
@@ -34,6 +38,42 @@ pub struct WikiConfig {
     /// Matches vimwiki's `g:vimwiki_diary_index` (default `"diary"`).
     /// The full path is `<root>/<diary_rel_path>/<diary_index>.wiki`.
     pub diary_index: String,
+    /// `daily`/`weekly`/`monthly`/`yearly`. Picks the date format the
+    /// diary commands use. v1.1 ships `daily`; the others fall through
+    /// to vimwiki-style names but the commands are no-ops until
+    /// Cluster 4 lands.
+    pub diary_frequency: String,
+    /// First day of the week (`monday`..`sunday`). Used by weekly
+    /// diary entry naming.
+    pub diary_start_week_day: String,
+    /// Caption level for the diary index page headings (1 = h1).
+    pub diary_caption_level: u8,
+    /// Newest-first (`desc`) or oldest-first (`asc`) in the diary
+    /// index.
+    pub diary_sort: String,
+    /// H1 text for the diary index page.
+    pub diary_header: String,
+    /// Maximum heading level treated as a *navigation* anchor — beyond
+    /// it the LSP doesn't synthesise an anchor symbol. Matches
+    /// vimwiki's `g:vimwiki_maxhi` (default `1`).
+    pub maxhi: u8,
+    /// Vimwiki's `g:vimwiki_listsyms`. The 5-character string maps
+    /// fractional progress states for checkboxes; the i-th char (0..=4)
+    /// is the rendered marker for state `i / 4`. Default: `" .oOX"`.
+    pub listsyms: String,
+    /// When toggling a parent list item, also cascade to descendants.
+    pub listsyms_propagate: bool,
+    /// `-1` keeps tight lists; positive integers indent list items by
+    /// that many extra columns. Layout hint for the renderer.
+    pub list_margin: i32,
+    /// Character used in place of literal spaces inside wikilink
+    /// targets when writing to disk (`_` by default).
+    pub links_space_char: String,
+    /// `nested_syntaxes` — code-block language → editor filetype map
+    /// used for syntax-highlighting fenced blocks. Empty by default.
+    pub nested_syntaxes: std::collections::HashMap<String, String>,
+    /// Rebuild the page's TOC on save when set.
+    pub auto_toc: bool,
     /// Phase 17 HTML export options. See SPEC §12.8.
     pub html: HtmlConfig,
 }
@@ -119,19 +159,34 @@ impl WikiConfig {
     /// `initializationOptions` nor a workspace root. `name` is empty;
     /// callers shouldn't depend on it for routing.
     pub fn empty() -> Self {
+        let d = wiki_defaults();
         Self {
             name: String::new(),
             root: PathBuf::new(),
             file_extension: ".wiki".into(),
             syntax: "vimwiki".into(),
-            diary_rel_path: default_diary_rel_path(),
-            diary_index: default_diary_index(),
+            index: d.index,
+            diary_rel_path: d.diary_rel_path,
+            diary_index: d.diary_index,
+            diary_frequency: d.diary_frequency,
+            diary_start_week_day: d.diary_start_week_day,
+            diary_caption_level: d.diary_caption_level,
+            diary_sort: d.diary_sort,
+            diary_header: d.diary_header,
+            maxhi: d.maxhi,
+            listsyms: d.listsyms,
+            listsyms_propagate: d.listsyms_propagate,
+            list_margin: d.list_margin,
+            links_space_char: d.links_space_char,
+            nested_syntaxes: d.nested_syntaxes,
+            auto_toc: d.auto_toc,
             html: HtmlConfig::default(),
         }
     }
 
     pub fn from_root(root: PathBuf) -> Self {
         let html = HtmlConfig::from_root(&root);
+        let d = wiki_defaults();
         Self {
             name: root
                 .file_name()
@@ -140,8 +195,21 @@ impl WikiConfig {
             root,
             file_extension: ".wiki".into(),
             syntax: "vimwiki".into(),
-            diary_rel_path: default_diary_rel_path(),
-            diary_index: default_diary_index(),
+            index: d.index,
+            diary_rel_path: d.diary_rel_path,
+            diary_index: d.diary_index,
+            diary_frequency: d.diary_frequency,
+            diary_start_week_day: d.diary_start_week_day,
+            diary_caption_level: d.diary_caption_level,
+            diary_sort: d.diary_sort,
+            diary_header: d.diary_header,
+            maxhi: d.maxhi,
+            listsyms: d.listsyms,
+            listsyms_propagate: d.listsyms_propagate,
+            list_margin: d.list_margin,
+            links_space_char: d.links_space_char,
+            nested_syntaxes: d.nested_syntaxes,
+            auto_toc: d.auto_toc,
             html,
         }
     }
@@ -174,6 +242,75 @@ fn default_diary_index() -> String {
     "diary".to_string()
 }
 
+fn default_index() -> String {
+    "index".to_string()
+}
+
+fn default_diary_frequency() -> String {
+    "daily".to_string()
+}
+
+fn default_diary_start_week_day() -> String {
+    "monday".to_string()
+}
+
+fn default_diary_sort() -> String {
+    "desc".to_string()
+}
+
+fn default_diary_header() -> String {
+    "Diary".to_string()
+}
+
+fn default_listsyms() -> String {
+    " .oOX".to_string()
+}
+
+fn default_links_space_char() -> String {
+    " ".to_string()
+}
+
+/// Fill in the v1.1 per-wiki keys that none of the constructors care
+/// about. Centralising the defaults here keeps `empty()`, `from_root()`,
+/// the legacy single-wiki path, and `From<RawWiki>` in sync.
+fn wiki_defaults() -> WikiDefaults {
+    WikiDefaults {
+        index: default_index(),
+        diary_rel_path: default_diary_rel_path(),
+        diary_index: default_diary_index(),
+        diary_frequency: default_diary_frequency(),
+        diary_start_week_day: default_diary_start_week_day(),
+        diary_caption_level: 1,
+        diary_sort: default_diary_sort(),
+        diary_header: default_diary_header(),
+        maxhi: 1,
+        listsyms: default_listsyms(),
+        listsyms_propagate: true,
+        list_margin: -1,
+        links_space_char: default_links_space_char(),
+        nested_syntaxes: std::collections::HashMap::new(),
+        auto_toc: false,
+    }
+}
+
+struct WikiDefaults {
+    index: String,
+    diary_rel_path: String,
+    diary_index: String,
+    diary_frequency: String,
+    diary_start_week_day: String,
+    diary_caption_level: u8,
+    diary_sort: String,
+    diary_header: String,
+    maxhi: u8,
+    listsyms: String,
+    listsyms_propagate: bool,
+    list_margin: i32,
+    links_space_char: String,
+    nested_syntaxes: std::collections::HashMap<String, String>,
+    auto_toc: bool,
+}
+
 impl Config {
     /// Build a `Config` from `InitializeParams`.
     ///
@@ -194,19 +331,14 @@ impl Config {
         let wikis = if let Some(list) = raw.wikis {
             list.into_iter().map(WikiConfig::from).collect()
         } else if let Some(root) = raw.wiki_root.as_deref().and_then(expand_path) {
-            let html = HtmlConfig::from_root(&root);
-            vec![WikiConfig {
-                name: root
-                    .file_name()
-                    .map(|s| s.to_string_lossy().into_owned())
-                    .unwrap_or_default(),
-                root,
-                file_extension: raw.file_extension.unwrap_or_else(|| ".wiki".into()),
-                syntax: raw.syntax.unwrap_or_else(|| "vimwiki".into()),
-                diary_rel_path: default_diary_rel_path(),
-                diary_index: default_diary_index(),
-                html,
-            }]
+            let mut wc = WikiConfig::from_root(root);
+            if let Some(ext) = raw.file_extension {
+                wc.file_extension = ext;
+            }
+            if let Some(s) = raw.syntax {
+                wc.syntax = s;
+            }
+            vec![wc]
         } else if let Some(folder) = first_workspace_folder(params) {
             vec![WikiConfig::from_root(folder)]
         } else {
@@ -289,6 +421,34 @@ struct RawWiki {
     exclude_files: Option<Vec<String>>,
     #[serde(default)]
     color_dic: Option<std::collections::HashMap<String, String>>,
+    // v1.1 per-wiki keys mirroring vimwiki globals. All optional so
+    // existing single-wiki configs migrate without touching anything.
+    #[serde(default)]
+    index: Option<String>,
+    #[serde(default)]
+    diary_frequency: Option<String>,
+    #[serde(default)]
+    diary_start_week_day: Option<String>,
+    #[serde(default)]
+    diary_caption_level: Option<u8>,
+    #[serde(default)]
+    diary_sort: Option<String>,
+    #[serde(default)]
+    diary_header: Option<String>,
+    #[serde(default)]
+    maxhi: Option<u8>,
+    #[serde(default)]
+    listsyms: Option<String>,
+    #[serde(default)]
+    listsyms_propagate: Option<bool>,
+    #[serde(default)]
+    list_margin: Option<i32>,
+    #[serde(default)]
+    links_space_char: Option<String>,
+    #[serde(default)]
+    nested_syntaxes: Option<std::collections::HashMap<String, String>>,
+    #[serde(default)]
+    auto_toc: Option<bool>,
 }
 
 impl From<RawWiki> for WikiConfig {
@@ -329,13 +489,27 @@ impl From<RawWiki> for WikiConfig {
         if let Some(v) = r.color_dic {
             html.color_dic = v;
         }
+        let d = wiki_defaults();
         WikiConfig {
             name: r.name.unwrap_or(derived_name),
             root,
             file_extension: r.file_extension.unwrap_or_else(|| ".wiki".into()),
             syntax: r.syntax.unwrap_or_else(|| "vimwiki".into()),
-            diary_rel_path: r.diary_rel_path.unwrap_or_else(default_diary_rel_path),
-            diary_index: r.diary_index.unwrap_or_else(default_diary_index),
+            index: r.index.unwrap_or(d.index),
+            diary_rel_path: r.diary_rel_path.unwrap_or(d.diary_rel_path),
+            diary_index: r.diary_index.unwrap_or(d.diary_index),
+            diary_frequency: r.diary_frequency.unwrap_or(d.diary_frequency),
+            diary_start_week_day: r.diary_start_week_day.unwrap_or(d.diary_start_week_day),
+            diary_caption_level: r.diary_caption_level.unwrap_or(d.diary_caption_level),
+            diary_sort: r.diary_sort.unwrap_or(d.diary_sort),
+            diary_header: r.diary_header.unwrap_or(d.diary_header),
+            maxhi: r.maxhi.unwrap_or(d.maxhi),
+            listsyms: r.listsyms.unwrap_or(d.listsyms),
+            listsyms_propagate: r.listsyms_propagate.unwrap_or(d.listsyms_propagate),
+            list_margin: r.list_margin.unwrap_or(d.list_margin),
+            links_space_char: r.links_space_char.unwrap_or(d.links_space_char),
+            nested_syntaxes: r.nested_syntaxes.unwrap_or(d.nested_syntaxes),
+            auto_toc: r.auto_toc.unwrap_or(d.auto_toc),
             html,
         }
     }