feat: comprehensive query files for all block types and VAR sections (Phase 3)

Update all 5 tree-sitter query files to cover the full grammar:

highlights.scm:
- Add highlights for new literals (binary, octal, date, bool, typed_int,
  wstring, char)
- Add highlights for block names (organization_block, function_block,
  function, data_block, type_definition)
- Add highlights for return_statement, goto_statement, title_statement
- Add highlights for bit_access, method_callee
- Add compound assignment operators (+=, -=, *=, /=, etc.)

indents.scm:
- Add function, type_definition, data_block to @indent.begin
- Add all var_*_declaration variants to @indent.begin
- Add struct_type to @indent.begin
- Add END_FUNCTION, END_TYPE, END_DATA_BLOCK, END_STRUCT to @indent.end

folds.scm:
- Add function, type_definition, data_block to @fold
- Add all var_*_declaration variants to @fold
- Add struct_type to @fold

locals.scm:
- Add function, type_definition, data_block as @local.scope
- Add all var_*_declaration variants as @local.scope
- Add struct_type as @local.scope
- Add block name definitions (@definition.function, @definition.class,
  @definition.type)
- Narrow @reference to prefixed_identifier only (reduces noise)

tags.scm:
- Add function, data_block, type_definition tags
- Add FB call references
- Add region_statement as @definition.module

queries/scl/locals.scm

@@ -1,15 +1,39 @@
-; Local variable scoping for SCL - matches grammar.js structure
+; Local variable scoping for SCL
 
 ; Variable declarations define local variables
 (var_item
   name: (identifier) @definition.var)
 
-; Variable sections create scopes
-(var_declaration) @local.scope
-
 ; Blocks create scopes
 (organization_block) @local.scope
 (function_block) @local.scope
+(function) @local.scope
+(type_definition) @local.scope
+(data_block) @local.scope
 
-; Identifiers are references
-(identifier) @reference
+; VAR sections create scopes
+(var_declaration) @local.scope
+(var_temp_declaration) @local.scope
+(var_constant_declaration) @local.scope
+(var_retain_declaration) @local.scope
+(var_non_retain_declaration) @local.scope
+(var_db_specific_declaration) @local.scope
+
+; Struct types create scopes
+(struct_type) @local.scope
+
+; Block names are definitions
+(organization_block
+  name: (string) @definition.function)
+(function_block
+  name: (string) @definition.function)
+(function
+  name: (string) @definition.function)
+(data_block
+  name: (string) @definition.class)
+(type_definition
+  name: (string) @definition.type)
+
+; References
+(prefixed_identifier
+  (identifier) @reference)