Merge remote-tracking branch 'origin/platformio-pch-rp2' into platformio-pch-rp2

tests/unit_tests/build_helpers/test_pch.py

@@ -175,3 +175,9 @@ def test_include_closure_survives_non_utf8_include_name(tmp_path: Path) -> None:
     (tmp_path / "b.h").write_text("")
     closure = pch._include_closure(tmp_path, ["a.h"])
     assert set(closure) == {"a.h", "b.h"}
+
+
+def test_pch_checksum_survives_surrogate_extra(tmp_path: Path) -> None:
+    """Install paths from non-UTF-8 filesystems carry surrogates; hashing
+    them must not raise past the caller's identity-unknown guard."""
+    assert pch.pch_checksum(tmp_path, [], ["/opt/bad\udcff/framework"])

tests/unit_tests/test_platformio_pch_script.py

@@ -175,6 +175,18 @@ def test_pch_script_preserves_spaced_flag_elements(tmp_path: Path) -> None:
     assert pch.splitlines()[0] == '#include "other.h"'
 
 
+def test_pch_script_leaves_absolute_force_includes_unfolded(
+    tmp_path: Path,
+) -> None:
+    """An absolute -include resolves through src_dir / name; it must still
+    stay consumer-only or the host path enters the .sum."""
+    outside = tmp_path / "outside.h"
+    outside.write_text("")
+    _run_script(tmp_path, flags=["-DX=1", "-include", str(outside)])
+    pch = (tmp_path / "dev" / "esphome_pch.h").read_text()
+    assert "outside.h" not in pch
+
+
 def test_pch_script_leaves_non_src_force_includes_unfolded(
     tmp_path: Path, capsys: pytest.CaptureFixture[str]
 ) -> None: