docs: record public metadata asset sweep

[DeliciousBuding]

Summary

• Add a public metadata asset sweep after DIFFENCE / GitHub triage.
• Record authenticated Hugging Face metadata results for CLiD and CopyMark without downloading large ZIPs.
• Sync Research ROADMAP, AGENTS, evidence index, intake note, and challenger queue to keep active slots at none.

Verification

• git diff --check
• python -X utf8 scripts/check_public_surface.py
• python -X utf8 scripts/check_markdown_links.py
• python -X utf8 scripts/run_pr_checks.py

[gemini-code-assist]

Code Review

This pull request documents a public metadata asset sweep conducted on Hugging Face and GitHub, which confirmed that no new diffusion-MIA replay packets were found beyond known CLiD and CopyMark surfaces. The changes include a new evidence document, updates to the project roadmap, and status updates across several workspace files. A review comment identified an inconsistency in AGENTS.md where the implementation workspace note was removed from the synchronization list despite being updated in this PR, and a code suggestion was provided to restore it.

[gemini-code-assist]

The updated status message in AGENTS.md removes "implementation" from the list of synchronized workspace notes. However, this pull request explicitly updates workspaces/implementation/challenger-queue.md (the implementation workspace note). To maintain accuracy and consistency with the PR description and the actual changes, the implementation workspace note should remain in the synchronization list.

Suggested change

- Active work: `Public metadata asset sweep completed after the DIFFENCE Zenodo snapshot sync, GitHub lightweight diffusion MIA triage, DEB, CPSample, DSiRe / LoRA-WiSE, hyperparameter-free SecMI, DME, FreMIA, and CopyMark gates. Status: latest verdict note, workspace-evidence index, Research ROADMAP, AGENTS, intake workspace note, and root ROADMAP are synchronized to the public metadata asset sweep. Authenticated Hugging Face metadata and GitHub artifact-shaped searches found no new non-duplicate image/latent-image diffusion-MIA replay packet. The only relevant HF surfaces remain known CLiD and CopyMark entries: CLiD's 1.62 GB gated zip still returns 403 for authenticated HEAD/range probes, and CopyMark's 5.66 GB zip is already covered by the official score-artifact gate. No CLiD/CopyMark ZIP, image payload, Stable Diffusion/CommonCanvas/LDM/Kohaku/COCO/LAION payload, model/checkpoint, full-repo download, script execution, CPU sidecar, GPU work, Platform/Runtime row, schema change, or product copy is released. active_gpu_question = none; next_gpu_candidate = none; CPU sidecar = none selected after public metadata asset sweep.`

- Active work: `Public metadata asset sweep completed after the DIFFENCE Zenodo snapshot sync, GitHub lightweight diffusion MIA triage, DEB, CPSample, DSiRe / LoRA-WiSE, hyperparameter-free SecMI, DME, FreMIA, and CopyMark gates. Status: latest verdict note, workspace-evidence index, Research ROADMAP, AGENTS, intake/implementation workspace notes, and root ROADMAP are synchronized to the public metadata asset sweep. Authenticated Hugging Face metadata and GitHub artifact-shaped searches found no new non-duplicate image/latent-image diffusion-MIA replay packet. The only relevant HF surfaces remain known CLiD and CopyMark entries: CLiD's 1.62 GB gated zip still returns 403 for authenticated HEAD/range probes, and CopyMark's 5.66 GB zip is already covered by the official score-artifact gate. No CLiD/CopyMark ZIP, image payload, Stable Diffusion/CommonCanvas/LDM/Kohaku/COCO/LAION payload, model/checkpoint, full-repo download, script execution, CPU sidecar, GPU work, Platform/Runtime row, schema change, or product copy is released. active_gpu_question = none; next_gpu_candidate = none; CPU sidecar = none selected after public metadata asset sweep.`

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