diff --git a/docs/validation/publisher-admission-031-20261002/CLEANUP.rst b/docs/validation/publisher-admission-031-20261002/CLEANUP.rst
new file mode 100644
index 0000000..8f1f09d
--- /dev/null
+++ b/docs/validation/publisher-admission-031-20261002/CLEANUP.rst
@@ -0,0 +1,43 @@
+Owned disposable artifact closure
+=================================
+
+Owner-authorised closure after publication and actual-byte proof archival.
+Status: COMPLETE after docs-only PR22 became visible. Exact rm exited0;
+all four targets were subsequently checked absent. No worktree was removed.
+
+Exact completed synthetic-test targets below
+/home/ts/wt/polystore-publisher-admission-031-20261002/docs/validation/publisher-admission-031-20261002/:
+
+* source-test-temp:466944 allocated bytes.
+* admission-test-temp:20480 allocated bytes.
+* qualified-test-temp:483328 allocated bytes.
+
+Exact single public-wheel verification scratch:
+/home/ts/.cache/agent-scratch/polystore-031-byte-proof-20261002.t9WrHD:
+163840 allocated bytes.
+
+Total removed allocated bytes1134592 (1.08MiB); this is the du measured amount,
+not a claim about system-wide df movement. Targets are exact real directories,
+not worktrees, environments, Git backing stores or scientific result roots.
+All selected source-test runs completed PASS; their XML/command/resource
+evidence is outside these directories. Contents are reconstructable synthetic
+unit fixtures, two local editable test wheels and one fetched public wheel.
+The published wheel bytes passed the independently archived hash/length check.
+
+No tracked files, .git directories, .pth files or alternates were found inside
+the targets. Pytest current symlinks point inside the same disposable roots;
+removal does not follow symlinks. Process inspection found only the inspection
+shell, not active source tests. Recursive lsof found no open files in any target.
+
+Preserved: all source, worktree/Git/branch metadata, both original publisher
+logs (including lossless archived copies), raw metadata, test reports,
+actual-byte proof, original native journal link, failed/uncertain external
+inputs and every biological/scientific artifact. No other tree is in scope.
+
+Removed synthetic fixtures are reproducible from the unchanged tests; public
+wheel bytes remain available from the recorded release URL and digest. These
+disposable directories were deleted, not moved to trash. Both preserved gzip
+log archives were rehashed afterwards: original failed job
+542d75ef00bcd8677526131a1afe195cea6fa63edca7eca5aa8e0b1b4e4b703c,
+original successful job
+cd1723ac96587309e23dec9144476c0219ae2b2124b0e3c084fe701a8fedfa49.
diff --git a/docs/validation/publisher-admission-031-20261002/PUBLIC-WHEEL-BYTE-PROOF.txt b/docs/validation/publisher-admission-031-20261002/PUBLIC-WHEEL-BYTE-PROOF.txt
new file mode 100644
index 0000000..e923d6a
--- /dev/null
+++ b/docs/validation/publisher-admission-031-20261002/PUBLIC-WHEEL-BYTE-PROOF.txt
@@ -0,0 +1,37 @@
+PUBLIC_WHEEL_ACTUAL_BYTE_VERIFICATION
+
+Artifact: polystore-0.3.1-py3-none-any.whl
+Expected bytes: 157342
+Expected SHA256: d1c81414f9b5ec1373a68a41bf704ec76c4b1f60a1ea0f00bb031bc8ae264e50
+
+Retained lookup: no exact public wheel found by filename under /home/ts/wt,
+/home/ts/.cache/agent-scratch, /home/ts/.cache/uv or /home/ts/.cache/pip.
+The two local 0.editable wheels were rejected as different artifacts.
+One public fetch only; no retry/resubmit, dependency fetch, installation or import.
+
+Fetch command:
+systemd-run --user --scope --quiet -p MemoryMax=512M -p MemorySwapMax=0 -p CPUQuota=100% timeout 25s taskset -c 0 curl --fail --silent --show-error --proto '=https' --max-time 20 --max-filesize 157342 --output /home/ts/.cache/agent-scratch/polystore-031-byte-proof-20261002.t9WrHD/polystore-0.3.1-py3-none-any.whl --write-out 'http_status=%{http_code} downloaded_bytes=%{size_download} elapsed_seconds=%{time_total}\nurl=%{url_effective}\n' https://files.pythonhosted.org/packages/e1/95/19cbd9b8d4c514434471f10e143c65dfacb117088272528e52a5d6e1b664/polystore-0.3.1-py3-none-any.whl
+
+Original fetch response:
+http_status=200 downloaded_bytes=157342 elapsed_seconds=0.086730
+url=https://files.pythonhosted.org/packages/e1/95/19cbd9b8d4c514434471f10e143c65dfacb117088272528e52a5d6e1b664/polystore-0.3.1-py3-none-any.whl
+
+The first orchestration wrapper failed after the fetch because it tried to
+store an absent session_id. Original HTTP200/byte result was already retained;
+subsequent verification read that same completed file. Fetch was NOT replayed.
+
+Independent local-byte command:
+systemd-run --user --scope --quiet -p MemoryMax=512M -p MemorySwapMax=0 -p CPUQuota=100% timeout 10s taskset -c 0 /home/ts/wt/openhcs-generated-inputs-installed-parent-20261001/.venv/bin/python -B -c 'import hashlib, pathlib; p=pathlib.Path("/home/ts/.cache/agent-scratch/polystore-031-byte-proof-20261002.t9WrHD/polystore-0.3.1-py3-none-any.whl"); data=p.read_bytes(); digest=hashlib.sha256(data).hexdigest(); print("file="+str(p)); print("actual_bytes="+str(len(data))); print("actual_sha256="+digest); assert len(data)==157342; assert digest=="d1c81414f9b5ec1373a68a41bf704ec76c4b1f60a1ea0f00bb031bc8ae264e50"; print("ACTUAL_BYTE_CHECK=PASS")'
+
+Independent local-byte result:
+file=/home/ts/.cache/agent-scratch/polystore-031-byte-proof-20261002.t9WrHD/polystore-0.3.1-py3-none-any.whl
+actual_bytes=157342
+actual_sha256=d1c81414f9b5ec1373a68a41bf704ec76c4b1f60a1ea0f00bb031bc8ae264e50
+ACTUAL_BYTE_CHECK=PASS
+
+Exit code: 0
+
+Bounds: one CPU; 512MiB cgroup; no swap; fetch max20s plus25s command wall;
+max response157342B; hash read max10s. Hash computed from actual read_bytes(),
+not a cached digest or metadata copy. The frozen scientific environment was
+not changed; the readonly Python interpreter executed standard library only.
diff --git a/docs/validation/publisher-admission-031-20261002/PUBLICATION.rst b/docs/validation/publisher-admission-031-20261002/PUBLICATION.rst
new file mode 100644
index 0000000..08420bb
--- /dev/null
+++ b/docs/validation/publisher-admission-031-20261002/PUBLICATION.rst
@@ -0,0 +1,99 @@
+Original 0.3.1 publication attempt
+=================================
+
+Parent merged PR21 normally at f07da0971947e7b7938503961a7014909e560307.
+The original release.py session36811 was resumed once by the parent and
+completed. No release invocation, retag, resubmission, rerun, environment install
+or scientific operation was performed by this source worker.
+
+Exact publisher handle:
+https://github.com/OpenHCSDev/PolyStore/actions/runs/36963152726
+Job 110701039079, run_attempt 1, event push, created 2026-10-02T04:07:22Z.
+The native gh run watch observes this handle only.
+
+Verified remote tag objects:
+
+* v0.3.1 annotated tag 57740a8200d27633da81a9e7a7320d5f4ebb1147,
+  peels to f07da0971947e7b7938503961a7014909e560307.
+* Immutable failed v0.3.0 tag 282c13750e40eb96135f6c7072d2b0c540db4309,
+  still peels to 84f322e46871de5ed47e7fd20976ad03e533c1c4.
+
+Initial observation: run queued, no GitHub release and PyPI 0.3.1 JSON HTTP404.
+This is pending publication, not failure or artifact acceptance.
+
+Terminal publication acceptance
+-------------------------------
+
+The SAME attempt completed SUCCESS, job start 2026-10-02T04:18:47Z,
+job completion 2026-10-02T04:20:22Z. Every build/publish step passed:
+editable installation, full release-candidate tests, ordinary distribution build,
+immutable declaration validation, twine check, trusted PyPI publication, GitHub
+release and original post-job cleanup. No attempt was resubmitted or replayed.
+
+Actual hosted suite: 570 PASS, 5 SKIP, zero failures in 17.57s. These are the
+original full publisher selection plus the two new admission tests. No source
+test, assertion or skip was weakened or added to avoid the original nine reds.
+Do not substitute the earlier local 572/1skip count for this hosted result.
+
+PyPI JSON confirms version0.3.1, requires-python >=3.11, and roifile declared
+only for the dev extra. Both PyPI distributions are non-yanked. GitHub release
+401537625 is public/non-draft/non-prerelease, published 2026-10-02T04:20:19Z:
+https://github.com/OpenHCSDev/PolyStore/releases/tag/v0.3.1
+PyPI release: https://pypi.org/project/polystore/0.3.1/
+
+Programmatic artifact metadata comparison found BOTH filename/size/SHA256
+identities equal between PyPI JSON and the GitHub release assets. The original
+publisher DSSE subject digests in its retained log match these same digests:
+
+* polystore-0.3.1-py3-none-any.whl, 157342 bytes,
+  d1c81414f9b5ec1373a68a41bf704ec76c4b1f60a1ea0f00bb031bc8ae264e50.
+* polystore-0.3.1.tar.gz, 193442 bytes,
+  0d1e78468581ead9c1cb13fcea0bc208ce52ba4e909bbcedf1662604be928dc7.
+
+GitHub also retains both publish.attestation assets. Workflow artifact inventory
+is empty; these are actual GitHub RELEASE assets, not nonexistent Actions
+artifact uploads. The initial publication check established metadata agreement
+only. The subsequent bounded actual-byte verification below extends that proof;
+neither check establishes fresh installed execution or biological acceptance.
+
+Full successful job log fetched through original GitHub SDK and archived
+losslessly in original-job-110701039079.log.gz. Decoded original bytes169009,
+including BOM/final newline, SHA256
+cd1723ac96587309e23dec9144476c0219ae2b2124b0e3c084fe701a8fedfa49.
+Raw terminal-run, GitHub-release, PyPI and workflow-artifact JSON replies are
+archived alongside it. The v0.3.0/v0.3.1 tag object identities were checked
+again after successful publication and remained unchanged.
+
+Publication blocker is closed. The previously recorded offline uv.lock
+limitation remains separate and unchanged; this publisher does not use it.
+
+Independent public-wheel byte verification
+-----------------------------------------
+
+After the owner authorised one157KB public fetch, no retained exact public wheel
+was found under the worktrees, agent scratch or uv/pip caches. Existing local
+editable wheels were not substituted for the published artifact. One HTTPS fetch
+of the original PyPI wheel URL completed HTTP200 in0.086730s,157342bytes.
+An independent local file read and SHA256 calculation asserted:
+
+* Actual length157342bytes.
+* Actual digest
+  d1c81414f9b5ec1373a68a41bf704ec76c4b1f60a1ea0f00bb031bc8ae264e50.
+
+Both expected identities matched, exit0. PUBLIC-WHEEL-BYTE-PROOF.txt retains
+the original command/results and bounds: oneCPU/512MiB, fetch20s(max25s wall),
+response maximum157342B, hash10s. No package installation/import, environment
+creation, source change, native/science run or dependency download occurred.
+The sdist remains metadata-agreement-only; its bytes were not independently
+downloaded/hashed. The wheel byte check does not imply installed acceptance.
+
+The completed original synthetic-test scratch and single public-wheel scratch
+are closed after proof archival; CLEANUP.rst records the exact targets/results.
+Both original publisher logs, compressed evidence, source, branch history and
+native journal remain preserved.
+
+The original append-only tool-call authority is linked at
+/home/ts/wt/openhcs-issue-batch-20260929/agent-audit-20261002/Dewey/native-session.jsonl.
+The existing link resolves to the original Codex session journal; it has not
+been copied, edited or replaced. Source/publication work has no microscopy
+screenshot claim. Original failed 0.3.0 publisher logs remain preserved.
diff --git a/docs/validation/publisher-admission-031-20261002/github-release-0.3.1.json b/docs/validation/publisher-admission-031-20261002/github-release-0.3.1.json
new file mode 100644
index 0000000..ca7d879
--- /dev/null
+++ b/docs/validation/publisher-admission-031-20261002/github-release-0.3.1.json
@@ -0,0 +1 @@
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diff --git a/docs/validation/publisher-admission-031-20261002/original-job-110701039079.log.gz b/docs/validation/publisher-admission-031-20261002/original-job-110701039079.log.gz
new file mode 100644
index 0000000..42d7d36
Binary files /dev/null and b/docs/validation/publisher-admission-031-20261002/original-job-110701039079.log.gz differ
diff --git a/docs/validation/publisher-admission-031-20261002/publisher-run-36963152726.json b/docs/validation/publisher-admission-031-20261002/publisher-run-36963152726.json
new file mode 100644
index 0000000..dd1c624
--- /dev/null
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diff --git a/docs/validation/publisher-admission-031-20261002/pypi-0.3.1.json b/docs/validation/publisher-admission-031-20261002/pypi-0.3.1.json
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Applications retain\nownership of domain artifact names and materialization policy.\n\n## Quick start\n\nPass an explicit mapping of backend names to instances. ``FileManager`` has no\nglobal fallback and does not infer a backend from a path.\n\n```python\nfrom pathlib import Path\nimport numpy as np\n\nfrom polystore import DiskBackend, FileManager, MemoryBackend\n\nregistry = {\n    \"disk\": DiskBackend(),\n    \"memory\": MemoryBackend(),\n}\nfiles = FileManager(registry)\n\ndata = np.arange(6).reshape(2, 3)\nfiles.save(data, Path(\"output.npy\"), backend=\"disk\")\nloaded = files.load(Path(\"output.npy\"), backend=\"disk\")\n```\n\nFor application startup where every discoverable context-free backend is\nwanted, use the package-owned lazy registry:\n\n```python\nfrom polystore import FileManager, ensure_storage_registry, storage_registry\n\nensure_storage_registry()\nfiles = FileManager(dict(storage_registry))\n```\n\nBackends requiring context-specific construction, including virtual workspaces\nand OMERO, must be instantiated by the application and added to its registry.\n\n## Nominal backend extension\n\nConcrete backends inherit ``DataSource``, ``DataSink``, ``StorageBackend``, or\n``ReadOnlyBackend`` and declare their backend key. The authoritative class\ncatalog is ``BackendBase.__registry__`` (also exported as\n``STORAGE_BACKENDS``). Do not build a second backend class table.\n\n## Installation\n\n```bash\npython -m pip install polystore\n```\n\nThe core install includes NumPy, ArrayBridge, metaclass-registry, file locking,\nplatform-aware cache paths, image I/O, Zarr/OME-Zarr support, and ZMQRuntime.\nFramework and streaming extras add their corresponding optional runtimes.\nInstall ``polystore[bioformats]`` for the package-owned PyImageJ and\nBio-Formats bridge. 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