Dated experiment record. Statements describe this run, not current submission readiness. Historical H. pylori category names do not establish infection; copy screens are bounded tests. Claims that a source does not exist mean none was identified in that recorded search, not proof of absence. Licensing interpretations in the notes remain unconfirmed. Local access details have been omitted. Current limitations and remaining work.

Z-Image split-corrected normal challenger

Result

FAIL for candidate production. Run 20260827T013450Z-zimage-normal completed successfully on deployed commit 5ad0fefce453778933b4f2393df4b1b70af256f9, but no whole checkpoint met the frozen normal-gastric morphology gate. The three earlier launches remain infrastructure-only failures; this fourth launch is the first valid scientific Z-Image result.

Integrity, rights evidence, and split

Exit code is 0, ZIMAGE_LORA_COMPLETE is present, and every entry in ALL_SHA256SUMS passes after local retrieval.
The exact model is Tongyi-MAI/Z-Image revision 04cc4abb7c5069926f75c9bfde9ef43d49423021; publisher code is 26f23eda626ffadda020b04ff79488e1d72004cd; the official Diffusers trainer is d57cecde92a6d396845ab35425aa27469dff8173. The archived model card and publisher/Diffusers licence files record Apache-2.0.
Immutable config SHA-256 is ce6319bc8fc2e21dba72e63401bd48c21d6c892c648755e19871e62ea4a581d3. The matched CUDA 12.9 runtime lock SHA-256 is e5359bf567d77ad8c502696cf8e3caf6605471d77ee398e913024ec9cf2bd082.
The corpus gate passed 32 exact 1024x1024 RGB normal fields from nine non-held-out slides at 0.25 micrometres/pixel. Metadata SHA-256 is 024754db101c6371b6e67f4f1247df921ab63b6ba618afcb2aa5c07578a2bf9a, provenance SHA-256 is 4d66a9d56dd9c9beef75fedebd3f69c7b04b8c4411a90f546048f585efab2831, and held-out manifest SHA-256 is 18377920a2dcca040e05ce875e4c7ecfe7a3f09d512539bf69d2eb681a26d0af.
Four whole rank-32 LoRAs were recovered at steps 32, 64, 96, and 128. Each is exactly 66,882,272 bytes. Their SHA-256 values are bcbf92c3aad802a6b473616d457c907eb168991b2e58254e7fd2cfcb711f480b, 88574a26284810c5e17a87a8a68830255e03dcc8e1160dc11dee9b2a2e770c8b, fc6546cf629ca30670a5c67c39320af72588469a0b3b511f325552072f98c887, and b00b18230f4db052cb0a6499a9479e28c516dddc32f9234fa51cb93be29f127c.
Four fixed-seed validation images are exact 1024x1024 RGB PNGs. The local comparison sheet SHA-256 is 8319c8e07232c958ab0f3aa39cc7f0b77e5bfaa9ef59bdfaea5a62f8ead6e2db.

Privacy

Both preregistered screens pass. Against the corrected 32-field normal corpus, maximum DINO cosine is 0.894674 and minimum dHash distance is 23. Against the full corrected 128-field caption-neutral corpus, maximum DINO cosine is 0.897912 and minimum dHash distance is 15. Neither screen found an exact pixel match. DINO and dHash are privacy/nearest-neighbour checks, not clinical-quality evidence.

Whole-checkpoint engineering review

Step	Mean absolute gradient	Sydney-QA glands/mm2	Sydney-QA mucin/vacuole candidates/mm2	Lumen/tissue	Full-resolution result
32	14.020908	442.1	933.3	0.1230	Nearly preserves the zero-shot composition: an implausibly regular surface-to-deep column with oversized, dotted lumina rather than the local normal gastric topology in the untouched reference; reject
64	11.742981	518.1	1,219.9	0.1267	Adds dense, diffuse surface cellularity while retaining elongated repetitive lumina; reject
96	7.178376	215.9	847.0	0.0456	Strong pink shift, simplified parallel pits, oversized isolated nuclei, and loss of realistic gland diversity; reject
128	5.120024	318.4	939.3	0.1796	Strongest block repetition, excessive open lumina, simplified cellular detail, and no convincing improvement over the reference; reject

The zero-shot control measures 14.328430 mean absolute gradient and the untouched M1 real normal field 7.682061. Step 32 differs from the zero-shot pixels by mean absolute error 5.51844 but does not materially correct its composition. Sydney-QA block-feature maximum cosine rises from 0.9945 at step 32 to 0.9997 at step 128, consistent with the visible increase in repetition. These measurements are descriptive; sharpness and an uncalibrated classical feature count cannot qualify an image.

Sydney-QA extracted raw/normalized stain, nuclei, gland/lumen, mucin/vacuole, inflammatory-surrogate, bacillus-surrogate, and repetition features plus audit masks for all four cells. Every record remains CALIBRATION_REQUIRED. No GI-pathologist-annotated patient/slide-disjoint real envelope exists, so Sydney-QA cannot establish clinical correctness, diagnosis, Sydney grade, or OLGA/OLGIM and does not replace pathologist review.

Runtime, cost, and cleanup

The worker ran for 607 seconds. Conservative A100 instance uptime is 800 seconds, approximately US$0.82 at the project's US$3.673385/hour list-price assumption. The bounded e2-standard-4 recovery worker was chargeable for at most 816 seconds, approximately US$0.03 at US$0.134/hour. Total conservative compute is below US$0.85 before temporary storage, credits, and tax; the A100 itself was Spot.

The A100 and recovery CPU are terminated. After complete local verification, the temporary recovery instance, read-only disk, and snapshot were deleted. The original stopped Z-Image/Qwen disk remains retained.

Decision and smallest correction

No checkpoint advances to another category, canvas, or candidate pool. The failure is specifically validation composition and topology, not integrity, privacy, rights evidence, or runtime.

The smallest causal follow-up is inference-only: validate the same four immutable whole checkpoints with the exact normal caption used for all 32 training fields. The original validation prompt was semantically similar but not byte-identical and omitted the frozen 0.25-micrometre/pixel scale language. config/zimage_normal_prompt_alignment_v1.json preregisters one exact training-caption prompt, the unchanged negative prompt, seed, geometry, 50 steps, CFG 4.0, model, and checkpoint hashes. It changes no weight or training variable. If no whole checkpoint corrects local gastric topology under that single aligned prompt, close this Z-Image LoRA path rather than opening a category or pool.

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