feat!: align standard captures with upstream

Problem: Sharing highlight queries with upstream tree-sitter and
Helix is difficult.

Solution: Where reasonable, use capture names in tree-sitter's standard
list or Helix's Atom-style hierarchy.

Specifically:

* tree-sitter "standard capture names"
  (https://github.com/tree-sitter/tree-sitter/blob/3f44b896852eb7daaa6df4fb778c9bb52c70c815/highlight/src/lib.rs#L20-L72):

  - `@parameter` -> `@variable.parameter`
  - `@field` -> `@variable.member`
  - `@namespace` -> `@module`
  - `@float` -> `@number.float`
  - `@symbol` -> `@string.special.symbol`
  - `@string.regex` -> `@string.regexp`
  - `@text.*` -> `@markup.*` (`strong`, `italic`, `link`, `strikethrough`; with exceptions; see below)
  - `@text.title` -> `@markup.heading`
  - `@text.literal` -> `@markup.raw`
  - `@text.reference` -> `@markup.link`
  - `@text.uri` -> `@markup.link.url` (in markup links)
  - `@string.special` -> `@markup.link.label` (non-url links)
  - `@punctuation.special` -> `@markup.list` (markdown lists only; move subitems from `@text.todo`)

* Helix captures
  (https://docs.helix-editor.com/master/themes.html#syntax-highlighting):

  - `@method` -> `@function.method`
  - `@method.call` -> `@function.method.call`
  - `@text.{todo,warning,note,danger}` -> `@comment.{error,warning,hint,info,todo}`
  - `@text.diff.{add,delete,}` -> `@diff.{plus,minus,delta}`
  - `@text.uri` -> `@string.special.url` (outside markup)
  - `@preproc` -> `@keyword.directive`
  - `@define` -> `@keyword.directive`(`.define`?)
  - `@storageclass` -> `@keyword.storage`
  - `@conditional` -> `@keyword.conditional`
  - `@debug` -> `@keyword.debug`
  - `@exception` -> `@keyword.exception`
  - `@include` -> `@keyword.import`
  - `@repeat` -> `@keyword.repeat`

* cleanup

  - remove some redundant `@conceal` (but still allow it for conceal-only patterns)
  - remove obsolete `@error` (syntax linting is out of scope for this repo)
  - sort, cleanup capture list in `CONTRIBUTING.md`

1 files changed, 10 insertions, 10 deletions

diff --git a/queries/leo/highlights.scm b/queries/leo/highlights.scm
index 60f3fefeb..11c2d67e4 100644
--- a/queries/leo/highlights.scm
+++ b/queries/leo/highlights.scm
@@ -34,23 +34,23 @@
  "transition"
 ] @keyword.function
 
-"import" @include
+"import" @keyword.import
 
 "return" @keyword.return
 
 (return_arrow) @punctuation.delimiter
 
-"for" @repeat
+"for" @keyword.repeat
 
 [ 
   "else"
   "if"
-] @conditional
+] @keyword.conditional
 
 [
  (ternary_if)
  (ternary_else)
-] @conditional.ternary
+] @keyword.conditional.ternary
 
 [ "(" ")" "{" "}" "[" "]" ] @punctuation.bracket
 
@@ -118,11 +118,11 @@
 ] @string.special
 
 ;record declaration
-(record_declaration (identifier) @field) 
+(record_declaration (identifier) @variable.member) 
 
 ;struct component 
 (struct_component_declaration 
-  (identifier) @field)
+  (identifier) @variable.member)
 
 (type) @type
 
@@ -140,7 +140,7 @@
 
 (record_type
  (locator
-	(identifier) @field))
+	(identifier) @variable.member))
 
 (transition_declaration
   name: (identifier) @function.builtin)
@@ -159,13 +159,13 @@
 
 (method_call
   . (_)
-  . (identifier) @method.call)
+  . (identifier) @function.method.call)
 
 (function_parameter
- (identifier) @parameter)
+ (identifier) @variable.parameter)
 
 (struct_declaration
-  name: (identifier) @field)
+  name: (identifier) @variable.member)
 
 (variable_declaration
 	(identifier_or_identifiers