fix: address code review findings and critical issues

Critical Fixes:
- Fixed EditorConfig violations in grammar.js, scanner.c, README.md, .mega-linter.yml
  - Changed JSDoc comments from 1-space to 2-space indent per .editorconfig
  - Fixed line length violations in README.md and .mega-linter.yml
- Updated test count badge from 59/59 to 61/61 in README.md
- Created queries/highlights.scm for syntax highlighting support
- Updated package.json with repository and files fields

Configuration Updates:
- Added repository field pointing to GitHub
- Added files field to control npm package contents
- Properly formatted CONTRIBUTING.md with prettier

All 61 tests passing (100% success rate)
All critical EditorConfig violations resolved

queries/highlights.scm

@@ -0,0 +1,85 @@
+; ShellSpec Syntax Highlighting
+; Extends tree-sitter-bash highlighting
+
+; Block keywords (BDD test structure)
+[
+  "Describe"
+  "Context"
+  "ExampleGroup"
+  "It"
+  "Example"
+  "Specify"
+] @keyword.function
+
+; Focused blocks (for running specific tests)
+[
+  "fDescribe"
+  "fContext"
+  "fIt"
+  "fExample"
+  "fSpecify"
+] @keyword.function.focused
+
+; Skipped blocks (for temporarily disabling tests)
+[
+  "xDescribe"
+  "xContext"
+  "xIt"
+  "xExample"
+  "xSpecify"
+] @keyword.function.skipped
+
+; Hook keywords
+[
+  "Before"
+  "After"
+  "BeforeAll"
+  "AfterAll"
+  "BeforeEach"
+  "AfterEach"
+  "BeforeRun"
+  "AfterRun"
+  "BeforeCall"
+  "AfterCall"
+] @keyword.control.hook
+
+; Utility blocks
+[
+  "Data"
+  "Parameters"
+] @keyword.function.data
+
+; Skip/Pending/Todo blocks
+[
+  "Skip"
+  "Pending"
+  "Todo"
+] @keyword.function.pending
+
+; Directives
+[
+  "Include"
+] @keyword.directive
+
+; Comments (inherit from bash)
+(comment) @comment
+
+; Strings (inherit from bash)
+(string) @string
+(raw_string) @string
+
+; Functions (inherit from bash)
+(function_definition
+  name: (word) @function)
+
+; Variables (inherit from bash)
+(variable_name) @variable
+
+; Operators (inherit from bash)
+[
+  "&&"
+  "||"
+  "|"
+  ";"
+  "&"
+] @operator