feat(semantic): the hunter's semantic producer covers Java and PHP

Java parsed already, but the producer failed every Java row because no obligation facts existed for the
language and that failure took roles and def_use down with it. PHP had no grammar. Now: tree-sitter-php in the
semantic extra with PHP node kinds in the CST reader; obligation facts for Jenkins/Stapler, Spring Security and
Servlet code (java.toml) and for Laravel, WordPress and Symfony (php.toml), each header naming the training
clones and references the names were checked against; a language with an IR but no obligation facts keeps
roles and def_use and records obligations as unchecked (None), which the engineered features treat as missing,
never as zero. Proven on the committed pool: 6 of 6 Java rows and 33 of 33 PHP rows of one fix change each now
carry semantic features. Implemented by Codex; gated here with ruff, mypy and the full suite.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

pyproject.toml

@@ -31,7 +31,7 @@ docs = [
 s3 = [
     "boto3>=1.35,<2",
 ]
-# Structured parse for overlay (JS/C/C++/Java/Python). Core install stays empty.
+# Structured parse for overlay (JS/C/C++/Java/PHP/Python). Core install stays empty.
 # Wheels are MIT; import is lazy via openultrasast.semantic.extra.
 semantic = [
     "tree-sitter>=0.23,<0.27",
@@ -41,6 +41,7 @@ semantic = [
     "tree-sitter-c>=0.23",
     "tree-sitter-cpp>=0.23",
     "tree-sitter-java>=0.23",
+    "tree-sitter-php>=0.23",
 ]
 
 [project.scripts]