Repair image and metadata publication contracts, detection routing, research
artifact validation, release verification, and the published agent skill.
Refresh the dependency lock and reconcile documentation with verified behavior.
Add regression coverage and record the completed audit and corrected VideoSeal
measurements. Preserve the existing Accelerate and Lightning versions.
Validation: Ruff and Pyright pass; 2358 tests pass with 3 skipped. The maintenance
gate exits 2 on the documented Accelerate and Lightning security findings.
The cli refactor dropped rich from dependencies, but four scripts still did
`from rich.console import Console` / `rich.table import Table`. Their test
modules import the scripts, so a clean `uv sync --frozen` (CI: core+dev, no
rich) failed at collection with ModuleNotFoundError on macOS/Windows/Linux.
Add a shared plain-text shim `scripts/_plain_console.py` (Console/Table via
click.echo, markup stripped) and switch all four scripts to it. Verified: all
four import with rich blocked, and tests/test_synthid_corpus.py +
tests/test_synthid_pixel_probe.py pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
scripts/synthid_pixel_probe.py is an experimental/diagnostic tool for the
one pixel-domain question that isn't a dead-end: on solid-color fills the
zero-mean residual IS essentially the watermark carrier. Two modes:
'consistency' (mean pairwise NCC of carriers across fills vs random
baseline) and 'removal' (does the pipeline drop the carrier toward
baseline?). Logic validated synthetically (injected carrier correlates,
random noise doesn't, simulated removal collapses it) -- no real fills or
GPU needed.
Running its metric on the corpus independently re-confirms the documented
dead-end for real content: at matched resolution SynthID positives do not
cluster apart from negatives (within-Gemini 0.07; at 1024 px pos-vs-neg
>= pos-vs-pos). An apparent 0.62 among 1254px ChatGPT positives turned out
to be near-duplicate content (5 renders of one prompt at ~0.92; a distinct
ChatGPT image scored ~0 against them), not a shared carrier. The probe is
solid-fills-only; do not use on real content.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Victor Kuznetsov