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Make asset mime_type immutable after first ingest

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Prevents cross-tenant metadata mutation when multiple references share
the same content-addressed Asset row. mime_type can now only be set when
NULL (first ingest); subsequent attempts to change it are silently ignored.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Luke Mino-Altherr
2026-03-12 15:05:16 -07:00
parent 555ab32814
commit a2cb29fd06
4 changed files with 49 additions and 5 deletions
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2
app/assets/services/ingest.py
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@@ -146,7 +146,7 @@ def _register_existing_asset(
if not asset:
raise ValueError(f"No asset with hash {asset_hash}")
if mime_type and asset.mime_type != mime_type:
if mime_type and not asset.mime_type:
update_asset_hash_and_mime(session, asset_id=asset.id, mime_type=mime_type)
if preview_id: