feat(php): add PHPUnit support with compact output (65%+ token savings)

README.md

@@ -181,6 +181,7 @@ rtk rake test                   # Ruby minitest (-90%)
 rtk rspec                       # RSpec tests (JSON, -60%+)
 rtk err <cmd>                   # Filter errors only from any command
 rtk test <cmd>                  # Generic test wrapper - failures only (-90%)
+rtk phpunit                     # PHPUnit tests (failures only, -65%+)
 ```
 
 ### Build & Lint

scripts/test-all.sh

@@ -564,6 +564,16 @@ section "Hook check (#344)"
 
 assert_contains "rtk init --show hook version" "version" rtk init --show
 
+# ── 42. PHP (conditional) ───────────────────────────
+
+section "PHP (conditional)"
+
+if command -v phpunit &>/dev/null || [ -f vendor/bin/phpunit ] || [ -f bin/phpunit ]; then
+    assert_help    "rtk phpunit"                    rtk phpunit --help
+else
+    skip_test "rtk phpunit" "phpunit not installed"
+fi
+
 # ══════════════════════════════════════════════════════
 # Report
 # ══════════════════════════════════════════════════════

src/cmds/mod.rs

@@ -5,6 +5,7 @@ pub mod dotnet;
 pub mod git;
 pub mod go;
 pub mod js;
+pub mod php;
 pub mod python;
 pub mod ruby;
 pub mod rust;

src/cmds/php/mod.rs

@@ -0,0 +1,3 @@
+//! PHP ecosystem filters.
+
+pub mod phpunit_cmd;