fix: download optional Python runtime resources explicitly

scripts/smoke-python-runtime.py

@@ -886,8 +886,9 @@ def smoke_sdk_authoring(base_url: str, executable: Path, update_snapshots: bool)
     """Query the bundled Python and switch skills without replacing that environment."""
     from deepseek_harness import DeepSeekHarness
 
-    resources = executable.with_name(executable.name.removeprefix("deepseek-harness-sdk-runtime-").removesuffix(".exe"))
-    manifest = json.loads((resources / "primary-runtime/runtime.json").read_text())
+    primary = Path(json.loads(subprocess.check_output([str(executable), "--download-primary-runtime"], text=True)))
+    resources = primary.parent
+    manifest = json.loads((primary / "runtime.json").read_text())
     for mode in ("default", "replacement", "disabled"):
         with tempfile.TemporaryDirectory(prefix="dsh-sdk-authoring-") as temporary:
             root = Path(temporary).resolve()
@@ -958,7 +959,9 @@ def smoke_sdk_office(executable: Path) -> None:
                 shutil.copytree(source, destination)
             else:
                 shutil.copy2(source, destination)
-        office = root / f"{stem}-office"
+        cache_environment = {**os.environ, "DSH_RESOURCE_CACHE": str(root / "cache")}
+        office = Path(json.loads(subprocess.check_output([str(relocated), "--download-office"], text=True, env=cache_environment)))
+        assert not (office.parent / "primary").exists(), "Office download unexpectedly prepared the authoring environment"
         adapter = office / "node_modules/@deepseek-ai/libreoffice-kit/package.json"
         native = stem.removeprefix("deepseek-harness-sdk-runtime-").replace("win-", "win32-").replace("macos-", "darwin-")
         declared = json.loads(adapter.read_text(encoding="utf-8")).get("optionalDependencies", {})
@@ -997,7 +1000,7 @@ def smoke_sdk_office(executable: Path) -> None:
             patches=(str(patch),),
             api_key="sk-keyless-smoke",
             base_url="http://127.0.0.1:9",
-            env={"DSH_PERMISSION_MODE": "danger-full-access", "DSH_TELEMETRY_DISABLED": "1"},
+            env={"DSH_PERMISSION_MODE": "danger-full-access", "DSH_TELEMETRY_DISABLED": "1", "DSH_RESOURCE_CACHE": str(root / "cache")},
             # The startup plugin awaits a converter with a 120-second deadline before JSON-RPC is ready.
             initialize_timeout_seconds=180,
             request_timeout_seconds=180,
@@ -1007,10 +1010,32 @@ def smoke_sdk_office(executable: Path) -> None:
         if result["backend"] != expected_backend:
             raise AssertionError(f"Office conversion did not use {expected_backend}: {result}")
         if not result["moduleUrl"].startswith(office.as_uri() + "/"):
-            raise AssertionError(f"Office module was not loaded from the relocated wheel: {result}")
+            raise AssertionError(f"Office module was not loaded from the downloaded sidecar: {result}")
         pdf = output.read_bytes()
         if len(pdf) < 100 or not pdf.startswith(b"%PDF-"):
             raise AssertionError(f"Office conversion produced an invalid PDF at {output}")
+        workbook = root / "input.xlsx"
+        with zipfile.ZipFile(workbook, "w", compression=zipfile.ZIP_DEFLATED) as archive:
+            archive.writestr("[Content_Types].xml", '<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"><Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/><Default Extension="xml" ContentType="application/xml"/><Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/><Override PartName="/xl/worksheets/sheet1.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/></Types>')
+            archive.writestr("_rels/.rels", '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/></Relationships>')
+            archive.writestr("xl/workbook.xml", '<workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"><sheets><sheet name="Sheet1" sheetId="1" r:id="rId1"/></sheets></workbook>')
+            archive.writestr("xl/_rels/workbook.xml.rels", '<Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/></Relationships>')
+            archive.writestr("xl/worksheets/sheet1.xml", '<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"><sheetData><row r="1"><c r="A1"><f>1+2</f><v>0</v></c></row></sheetData></worksheet>')
+        subprocess.run([sys.executable, "-c", """
+import sys, zipfile
+from pathlib import Path
+from xml.etree import ElementTree
+from deepseek_harness.office import convert, render_images, recalculate
+root = Path(sys.argv[1])
+assert convert(root / 'document.docx', root / 'python.pdf').backend == sys.argv[2]
+rendered = render_images(root / 'python.pdf', root / 'images', pages=[1])
+assert rendered.images and rendered.images[0].path.read_bytes().startswith(b'\\x89PNG')
+recalculate(root / 'input.xlsx', root / 'calculated.xlsx')
+with zipfile.ZipFile(root / 'calculated.xlsx') as archive:
+    sheet = ElementTree.fromstring(archive.read('xl/worksheets/sheet1.xml'))
+    assert sheet.find('.//{*}c[@r="A1"]/{*}v').text == '3'
+""", str(root), expected_backend], env={**cache_environment, "DSH_OFFICE_SIDECAR": str(office)}, check=True, timeout=180)
+        assert not (office.parent / "primary").exists(), "Python Office API unexpectedly downloaded authoring resources"
         print(f"smoke-python-runtime: relocated Office {result['backend']} DOCX produced {len(pdf)} PDF bytes")