rework: AssetInfo.name is only a display name

tests-assets/test_uploads.py

@@ -288,7 +288,7 @@ async def test_upload_tags_traversal_guard(http: aiohttp.ClientSession, api_base
 
 @pytest.mark.asyncio
 @pytest.mark.parametrize("root", ["input", "output"])
-async def test_duplicate_upload_same_path_updates_state(
+async def test_duplicate_upload_same_display_name_does_not_clobber(
     root: str,
     http,
     api_base: str,
@@ -296,30 +296,30 @@ async def test_duplicate_upload_same_path_updates_state(
     make_asset_bytes,
 ):
     """
-    Two uploads target the exact same destination path (same tags+name) with different bytes.
-    Expect: file on disk is from the last upload; its AssetInfo serves content; the first AssetInfo's content 404s.
-    This validates that AssetCacheState(file_path) remains unique and its asset_id/mtime_ns were updated.
+    Two uploads use the same tags and the same display name but different bytes.
+    With hash-based filenames, they must NOT overwrite each other. Both assets
+    remain accessible and serve their original content.
     """
     scope = f"dup-path-{uuid.uuid4().hex[:6]}"
-    name = "same_path.bin"
+    display_name = "same_display.bin"
 
     d1 = make_asset_bytes(scope + "-v1", 1536)
     d2 = make_asset_bytes(scope + "-v2", 2048)
     tags = [root, "unit-tests", scope]
 
-    first = await asset_factory(name, tags, {}, d1)
-    second = await asset_factory(name, tags, {}, d2)
+    first = await asset_factory(display_name, tags, {}, d1)
+    second = await asset_factory(display_name, tags, {}, d2)
 
-    # Second one must serve the new bytes
+    assert first["id"] != second["id"]
+    assert first["asset_hash"] != second["asset_hash"]  # different content
+    assert first["name"] == second["name"] == display_name
+
+    # Both must be independently retrievable
+    async with http.get(f"{api_base}/api/assets/{first['id']}/content") as r1:
+        b1 = await r1.read()
+        assert r1.status == 200
+        assert b1 == d1
     async with http.get(f"{api_base}/api/assets/{second['id']}/content") as r2:
         b2 = await r2.read()
         assert r2.status == 200
         assert b2 == d2
-
-    # The first AssetInfo now points to an identity with no live state for that path -> 404
-    async with http.get(f"{api_base}/api/assets/{first['id']}/content") as r1:
-        try:
-            body = await r1.json()
-        except Exception:
-            body = {}
-        assert r1.status == 404, body