[gspark-etri]

Closes #82.

Measure the existing file-only B4/S256→B4/S512 transition on three eligible 1GbE Kubernetes nodes without accelerator resources. Four cache/arm conditions each have five simultaneous three-node cohorts (20 main, 60 node samples); four smokes and both setup attempts are retained. All target full-file hashes pass, no main retries/exclusions, and all owned CPU Jobs/Pods and the dedicated namespace are removed by UID.

With one seed in both arms, origin pack payload drops 395,822→0 B. Metadata remains 69,693,294 B, so all successful origin response bodies drop only 0.564740%. Empty peer snapshots provide no peer payload. Observed cohort medians store→peer: empty 3.102→3.240 s; one-seed 3.296→3.014 s. Report includes IQR and per-node times; no general latency speedup claim. Origin colocation, static snapshots, uncontrolled OS/load, instrumented proxy and application-byte scope are explicit.

Raw: 128-file package, tag ccgrid-e11-20261031-raw-v1; measured harness 7870cef872e201a6a4dca87ed1bb998da9c3109f, runtime 05c97605b07882f9ceaaeb90b94878f8923f81cf. Report, summary and PDF/SVG/PNG figure included.

Validation: seven accounting/validity regressions; offline verifier reconstructs all cohort counters from 26,928 original request rows, checks controller copies, cache/variant and source identities, actual node assignment and UID cleanup. Independent evidence review and clean Git archive reproduction pass; corruption is rejected. CI now reproduces the committed summary in addition to Go vet/race/build and real S3 conformance/CLI suites. Model payloads are absent from Git; offline checks compare worker-recorded full hashes with frozen inventories. No runtime behavior changes; NUMBERS.md untouched.

[gspark-etri]

Final verification at head ca0049c88014101a866ea4b2d39333fcb179eacc:

• Independent whole-change/evidence review: no remaining Critical/Important/Minor findings; per-node hash-validation overlap wording corrected.
• Clean Git archive of exact final head: seven regressions pass, all128 raw files rehash, full original-request reconstruction passes, reproduced summary equals committed JSON; checksum corruption rejected. Independent review also rejected request-byte, output-SHA, cache-placement and actual-node corruption.
• CI 41161011264: all three checks green and actual job logs read. Go vet/race/build, seven regressions, raw summary reproduction/diff and both real S3 conformance+CLI round trips passed. CI merge checkout includes exactly this head over main05c9760.
• Raw tag-v1 preserves measured-source ancestry; later final-head commit only clarifies report wording. No runtime/raw changes.
• All4 final CPU Jobs/Pods succeeded then UID-deleted; final namespace absent and cdx Job/Pod inventory empty; no accelerator requested. NUMBERS.md untouched.

Proceeding with the authorized GitHub-flow squash merge.