Update Unison highlights (#8315)

runtime/queries/unison/highlights.scm

@@ -10,14 +10,18 @@
 [
   (kw_forall)
   (unique_kw)
+  (structural_kw)
   (type_kw)
   (kw_equals)
   (do)
+  (ability)
+  (where)
 ] @keyword
 
 (kw_let) @keyword.function
 (type_kw) @keyword.storage.type
 (unique) @keyword.storage.modifier
+(structural) @keyword.storage.modifier
 ("use") @keyword.control.import
 
 
@@ -31,6 +35,7 @@
   (arrow_symbol)
   (">")
   (or)
+  (and)
   (bang)
 ] @operator
 
@@ -47,13 +52,22 @@
 
 ;; Types
 (record_field name: (wordy_id) @variable.other.member type: (wordy_id) @type)
-[
+(type_constructor (type_name (wordy_id) @constructor))
-  (type_name)
+(ability_declaration type_name: (wordy_id) @type type_arg: (wordy_id) @variable.parameter)
-  (type_signature)
+(effect (wordy_id) @special) ;; NOTE: an effect is just like a type, but in signature we special case it
-  (effect)
-] @type
 
-(term_definition) @variable
+;; Namespaces
+(path) @namespace
+(namespace) @namespace
+
+;; Terms
+(type_signature term_name: (path)? @variable term_name: (wordy_id) @variable)
+(type_signature (wordy_id) @type)
+(type_signature (delayed (wordy_id)) @type)
+
+(term_definition param: (wordy_id) @variable.parameter)
+
+(function_application function_name: (path)? function_name: (wordy_id) @function)
 
 ;; Punctuation
 [
@@ -70,3 +84,4 @@
   "]"
 ] @punctuation.bracket
 
+(test_watch_expression (wordy_id) @keyword.directive)