fix(cloudflare): reject incomplete no-promote CDN warmup

[james-elicx]

Summary

• reject --warm-cdn-no-promote when any staged warm request remains unsuccessful
• keep the uploaded version staged at 0% and report the existing cleanup guidance instead of returning false success
• cover readiness-success plus real-request-failure without promoting

Scope

This is a focused follow-up from the cumulative RSC/ISR CDN prewarming review. It changes only no-promote completion semantics and its focused deploy test.

Validation

• 26 Cloudflare warm-deploy tests passed
• targeted format, lint, and type checks passed

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/@vinext/cloudflare@3042

npm i https://pkg.pr.new/create-vinext-app@3042

npm i https://pkg.pr.new/@vinext/types@3042

npm i https://pkg.pr.new/vinext@3042

commit: ff55d3f

[github-actions]

Performance benchmarks

Compared ff55d3f against base e8079d2 using alternating same-runner rounds. Next.js was unchanged and skipped.

1 improved · 0 regressed · 5 within ±1.5%

Scenario	Framework	Baseline	Current	Change
Client bundle size (gzip)	vinext	142.2 KB	142.2 KB	⚫ +0.0%
Client entry size (gzip)	vinext	129.5 KB	129.5 KB	⚫ +0.0%
Dev server cold start	vinext	3.05 s	3.00 s	🟢 -1.6%
Production build time	vinext	3.31 s	3.29 s	⚫ -0.7%
RSC entry closure size (gzip)	vinext	116.0 KB	116.0 KB	⚫ -0.0%
Server bundle size (gzip)	vinext	197.5 KB	197.5 KB	⚫ -0.0%

View detailed results and traces

_{🟢 improvement · 🔴 regression · ⚫ change below 1.5% · paired base/head}

[james-elicx]

Superseded by consolidated PR #3046. No commits were dropped or rewritten: #3046 now contains this exact linear commit as part of #3041–#3046. Closing only the redundant draft PR.