feat: enable all language grammars by default

Set `default = ["all-languages"]` so Java, C, C++, Ruby, and C#
are included out of the box. Users can opt out with
`--no-default-features` for a smaller binary.

Author: Sephyi

CLAUDE.md

@@ -97,9 +97,9 @@ lowercase_subject = true
 
 ## Supported Languages (tree-sitter)
 
-Built-in: Rust, TypeScript, JavaScript, Python, Go
+Rust, TypeScript, JavaScript, Python, Go, Java, C, C++, Ruby, C#
 
-Feature-gated (optional): Java (`lang-java`), C (`lang-c`), C++ (`lang-cpp`), Ruby (`lang-ruby`), C# (`lang-csharp`). Enable with `--features lang-java` or `--features all-languages`.
+All 10 languages enabled by default. To build with only the core 5, use `--no-default-features`. Individual languages can be toggled via feature flags: `lang-java`, `lang-c`, `lang-cpp`, `lang-ruby`, `lang-csharp`.
 
 ## File Structure
 
@@ -184,7 +184,7 @@ src/
 ### Running Tests
 
 ```bash
-cargo test                    # All tests (280 tests)
+cargo test                    # All tests (295 tests)
 cargo test --test sanitizer   # CommitSanitizer tests
 cargo test --test safety      # Safety module tests
 cargo test --test context     # ContextBuilder tests
@@ -294,4 +294,4 @@ Common mistake: calling a new safeguard/check `fix` — if there was no bug, it'
 
 ### Documentation Sync
 
-Keep README.md test count in sync (currently 280).
+Keep README.md test count in sync (currently 295).

Cargo.toml

@@ -63,7 +63,7 @@ tree-sitter-python = "0.25"
 tree-sitter-go = "0.25"
 tree-sitter-javascript = "0.25"
 
-# Optional language grammars (feature-gated)
+# Additional language grammars (optional, enabled by default)
 tree-sitter-java = { version = "0.23", optional = true }
 tree-sitter-c = { version = "0.23", optional = true }
 tree-sitter-cpp = { version = "0.23", optional = true }
@@ -90,7 +90,7 @@ keyring = { version = "3", optional = true }
 regex = "1.12"
 
 [features]
-default = []
+default = ["lang-java", "lang-c", "lang-cpp", "lang-ruby", "lang-csharp"]
 secure-storage = ["keyring"]
 eval = []
 lang-java = ["tree-sitter-java"]