Fix ast-grep supported languages list to match official documentation

Correct the ast-grep language support documentation to accurately reflect
the actual 25 languages supported according to ast-grep.github.io:

**Removed unsupported languages:**
- Dart (not actually supported by ast-grep)
- Vue, Svelte (framework-specific, not core languages)
- SCSS, SASS, LESS (CSS preprocessors not supported)
- TOML, XML (not in official support list)
- PowerShell, shell variants beyond bash
- OCaml and other languages incorrectly listed

**Corrected to official 25 languages:**
- System: C, C++, C#, Go, Rust
- Web: JavaScript (js/jsx), TypeScript (ts), TSX, HTML, CSS, PHP
- General: Python, Java, Kotlin, Ruby, Swift, Scala, Lua, Elixir, Haskell
- Config: JSON, YAML
- Other: Bash, Nix, Solidity

**Updated examples:**
- Use correct language aliases (js instead of javascript, ts instead of typescript)
- Align with actual ast-grep command patterns

This ensures accurate guidance for developers using ast-grep integration
and prevents errors from referencing unsupported language identifiers.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.claude/rules/use-ast-grep.md

@@ -20,17 +20,17 @@ ast-grep --pattern '$PATTERN' --lang $LANGUAGE $PATH
 ### Common Use Cases
 
 - **Find function calls:**
-  `ast-grep --pattern 'functionName($$$)' --lang javascript .`
+  `ast-grep --pattern 'functionName($$$)' --lang js .`
 - **Find class definitions:**
-  `ast-grep --pattern 'class $NAME { $$$ }' --lang typescript .`
+  `ast-grep --pattern 'class $NAME { $$$ }' --lang ts .`
 - **Find variable assignments:**
   `ast-grep --pattern '$VAR = $$$' --lang ruby .`
 - **Find import statements:**
-  `ast-grep --pattern 'import { $$$ } from "$MODULE"' --lang javascript .`
+  `ast-grep --pattern 'import { $$$ } from "$MODULE"' --lang js .`
 - **Find method calls on objects:**
-  `ast-grep --pattern '$OBJ.$METHOD($$$)' --lang typescript .`
+  `ast-grep --pattern '$OBJ.$METHOD($$$)' --lang ts .`
 - **Find React hooks:**
-  `ast-grep --pattern 'const [$STATE, $SETTER] = useState($$$)' --lang typescript .`
+  `ast-grep --pattern 'const [$STATE, $SETTER] = useState($$$)' --lang tsx .`
 - **Find Ruby class definitions:**
   `ast-grep --pattern 'class $NAME < $$$; $$$; end' --lang ruby .`
 
@@ -43,42 +43,44 @@ ast-grep --pattern '$PATTERN' --lang $LANGUAGE $PATH
 
 ## Supported Languages
 
-**Primary Languages:**
+**Complete list of ast-grep supported languages** (25 total):
-- **JavaScript/TypeScript**: `javascript`, `typescript`, `jsx`, `tsx`
+
-- **Python**: `python`
+**System Programming:**
-- **Java/Kotlin**: `java`, `kotlin`
+- **C**: `c`
-- **C/C++**: `c`, `cpp`, `c++`
+- **C++**: `cpp`
-- **C#**: `csharp`, `cs`
+- **C#**: `csharp`
 - **Go**: `go`
 - **Rust**: `rust`
-- **Ruby**: `ruby`
-- **PHP**: `php`
-- **Swift**: `swift`
-- **Dart**: `dart`
 
-**Web & Markup:**
+**Web Development:**
+- **JavaScript**: `javascript` (aliases: `js`, `jsx`)
+- **TypeScript**: `typescript` (aliases: `ts`)
+- **TSX**: `tsx`
 - **HTML**: `html`
-- **CSS**: `css`, `scss`, `sass`, `less`
+- **CSS**: `css`
-- **Vue**: `vue`
+- **PHP**: `php`
-- **Svelte**: `svelte`
 
-**Configuration & Data:**
+**General Purpose:**
-- **YAML**: `yaml`, `yml`
+- **Python**: `python`
-- **JSON**: `json`
+- **Java**: `java`
-- **TOML**: `toml`
+- **Kotlin**: `kotlin`
-- **XML**: `xml`
+- **Ruby**: `ruby`
-
+- **Swift**: `swift`
-**Shell & Scripts:**
+- **Scala**: `scala`
-- **Bash**: `bash`, `sh`
-- **PowerShell**: `powershell`
-
-**Others:**
 - **Lua**: `lua`
 - **Elixir**: `elixir`
-- **Scala**: `scala`
 - **Haskell**: `haskell`
-- **OCaml**: `ocaml`
+
-- **And many more** - ast-grep supports 50+ languages
+**Configuration & Data:**
+- **JSON**: `json`
+- **YAML**: `yaml`
+
+**Other:**
+- **Bash**: `bash`
+- **Nix**: `nix`
+- **Solidity**: `solidity`
+
+> **Note**: Language aliases (like `js` for `javascript`) and file extension mappings can be customized using the `languageGlobs` configuration.
 
 ## Integration Workflow