refactor(diffctx): split tree-sitter into lang-core/extra features

Author: nikolay-e

.gitignore

@@ -428,3 +428,4 @@ profile_*.txt
 # Local analysis artifacts
 ANALYSIS.md
 .claude/
+.aider*

.pre-commit-config.yaml

@@ -41,7 +41,7 @@ repos:
       - id: debug-statements
       - id: name-tests-test
         args: ["--pytest-test-first"]
-        exclude: ^tests/(utils|conftest|framework/.*|garbage_data|scoring)\.py$
+        exclude: ^(tests/(utils|conftest|framework/.*|garbage_data|scoring)\.py|diffctx/tests/fixtures/garbage/.*\.py)$
       - id: fix-byte-order-marker
       - id: detect-private-key