Rewrite leftover LLM factory (DeepSeek-only), storage, validation.

Anthropic/Gemini names resolve to DeepSeek. Extraction import path re-exports datasheet_extract. Inherited copies stay on disk. storage_gcs unused, skipped.

tests/test_periscope_services_core_rewrite.py

@@ -0,0 +1,75 @@
+"""Leftover service cores resolve from src; LLM factory stays on DeepSeek."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import backend.periscopex.utils as utils
+import backend.services.admin_settings as admin_settings
+import backend.services.api_logs as api_logs
+import backend.services.datasheet_store as datasheet_store
+import backend.services.llm.factory as factory
+import backend.services.storage as storage
+from backend.periscopex.utils import natural_sort_key, safe_mpn
+from backend.services.admin_settings import version_is_stale
+from backend.services.datasheet_store import (
+    compute_md5_from_bytes,
+    resolve_datasheet,
+    store_datasheet_bytes,
+)
+from backend.services.llm.factory import get_provider_by_name
+from backend.services.storage import GENERATION_NEW, LocalStorageBackend, StaleGeneration
+
+
+def _assert_src(mod, name: str) -> None:
+    path = Path(mod.__file__).resolve()
+    assert path.name == name
+    assert "src" in path.parts
+    assert "Native Periscope overlay" not in path.read_text(encoding="utf-8")[:400]
+
+
+def test_core_service_modules_are_src():
+    for mod, name in (
+        (factory, "factory.py"),
+        (storage, "storage.py"),
+        (api_logs, "api_logs.py"),
+        (datasheet_store, "datasheet_store.py"),
+        (admin_settings, "admin_settings.py"),
+        (utils, "utils.py"),
+    ):
+        _assert_src(mod, name)
+
+
+def test_factory_routes_anthropic_and_gemini_names_to_deepseek(monkeypatch):
+    from backend.config import settings
+
+    monkeypatch.setattr(settings, "deepseek_api_key", "sk-test")
+    get_provider_by_name.cache_clear()
+    try:
+        assert get_provider_by_name("deepseek").name == "deepseek"
+        assert get_provider_by_name("anthropic").name == "deepseek"
+        assert get_provider_by_name("gemini").name == "deepseek"
+    finally:
+        get_provider_by_name.cache_clear()
+
+
+def test_safe_mpn_and_natural_sort():
+    assert safe_mpn("A/B:C") == "A_B_C"
+    assert sorted(["R10", "R2", "R1"], key=natural_sort_key) == ["R1", "R2", "R10"]
+
+
+def test_local_storage_generation_and_datasheet_roundtrip(tmp_path: Path):
+    backend = LocalStorageBackend(tmp_path)
+    backend.write_json_if_match("k.json", {"a": 1}, GENERATION_NEW)
+    try:
+        backend.write_json_if_match("k.json", {"a": 2}, GENERATION_NEW)
+        raise AssertionError("expected StaleGeneration")
+    except StaleGeneration:
+        pass
+    pdf = b"%PDF-1.4 fake"
+    key = store_datasheet_bytes(backend, pdf, "ABC/1")
+    assert key.endswith(".pdf")
+    assert resolve_datasheet(backend, "ABC/1") == key
+    assert compute_md5_from_bytes(pdf)
+    assert version_is_stale("1.0.0", "2.0.0")
+    assert not version_is_stale("2.0.0", "0.0.0")