feat: add bypass cache feature for perf debuggability

[serhalp]

Here it is in action:

❯ time -p curl -s -I "http://127.0.0.1:3000/vue-use" | grep x-cache
real 5.34

❯ time -p curl -s -I "http://127.0.0.1:3000/vue-use" | grep x-cache
real 0.37

❯ time -p curl -s -I "http://127.0.0.1:3000/vue-use?__bypass_cache__=1" | grep x-cache
x-cache-bypass: all
real 2.55

❯ time -p curl -s -I "http://127.0.0.1:3000/vue-use" | grep x-cache
real 0.35

❯ time -p curl -s -I "http://127.0.0.1:3000/vue-use?__bypass_cache__=npm-package" | grep x-cache
x-cache-bypass: npm-package
real 0.48

I may have gone too far with the fine-grained controls 😅

Warning

Don't look at this PR. It's a thrown together proof of concept largely generated by Claude.

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Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Feb 3, 2026 1:43am

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