[CharleoYang]

Problem and change

Existing Python and TypeScript single-owner regressions found duplicate whole-value SHA-256 matchers in chat image reads, Lark historical image plans, and the native child result inbox.

Reuse the existing canonical digest exports at those consumers. Preserve full-match versus test semantics, type refusals, short-circuit order, errors and caller-specific checks; no runtime match-policy change. Add exactly two Python consumers and one TypeScript consumer to the pinned ownership inventories. These are inventory updates, not exemptions; rejection assertions remain unchanged. The generated Python owner is unchanged.

Focused qualification

Each command ran once: 327 Python passed, 25 TypeScript passed; zero failures or skips. Node 22 was first on PATH, PYTHONPATH unset, usage ping disabled, and temporary files outside the repository.

.venv/bin/python -m pytest -q tests/architecture/test_content_digest_single_owner.py tests/test_manager_context_roundtrip.py::test_existing_return_files_project_without_resending_or_rewriting tests/test_manager_context_roundtrip.py::test_returned_file_http_preserves_bytes_and_filename tests/test_manager_context_roundtrip.py::test_returned_file_http_rechecks_original_source_and_snapshot tests/test_manager_context_roundtrip.py::test_original_steward_history_links_images_but_preserves_bytes_and_cursor tests/test_lark_private_conversations.py::test_original_worker_queues_only_media_for_a_verified_legacy_answer tests/extensions/test_lark_private_result_files.py
node --no-warnings --experimental-sqlite --experimental-strip-types --test --test-concurrency=4 tests/control_plane_ts/content_digest_single_owner.test.ts tests/control_plane_ts/native_child_result_inbox.test.ts

No cumulative/full-suite qualification is claimed. Independent exact-head review is pending. No merge requested.

[CharleoYang]

Overlap note: #8758 repairs two of the same sites (chat result files, native child result inbox) and is still open. This PR is the superset: it also repairs the Lark historical image-result path (loopx/extensions/lark/private_conversations.py:1537,1543) and updates the same pinned ownership inventories, so the two cannot merge independently without conflict. Proposal: merge this one and close #8758 as superseded; do not merge both.

[CharleoYang]

Closing without merge: the owner directed that this work be published on the internal Sankuai remote (origin = ssh://[email protected]/~yangqi45/loopx.git) and not on GitHub. The branch is pushed there; no GitHub PR is required.