chore: tsdown dual build

[BioPhoton]

This PR includes:

• tsdown setup mirroring old build
• tsdown task inference plugin
• switch all projects to tsdown
• models and utils usage in nx-plugin
• deletion of old copied files in nx-plugin

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 1333f3c

Command	Status	Duration	Result
nx code-pushup --nx-bail -- print-config --outp...	❌ Failed	3m 34s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-10-05 15:41:22 UTC

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@code-pushup/ci

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@code-pushup/cli

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@code-pushup/create-cli

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@code-pushup/core

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@code-pushup/models

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@code-pushup/nx-plugin

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@code-pushup/coverage-plugin

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@code-pushup/eslint-plugin

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@code-pushup/typescript-plugin

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@code-pushup/utils

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@code-pushup/models-transformers

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commit: 1333f3c

[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared current commit d897268 with previous commit 33714e2.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Categories

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Security	🟡 56	🟡 64
Performance	🔴 36	🔴 42
Documentation	🔴 24	🔴 23
Code coverage	🟡 90	🟡 90
Updates	🟡 84	🟡 84
Accessibility	🟢 92	🟢 92	–
Best Practices	🟢 100	🟢 100	–
SEO	🟡 61	🟡 61	–
Type Safety	🟢 100	🟢 100	–
Bug prevention	🟢 100	🟢 100	–
Miscellaneous	🟢 100	🟢 100	–
Code style	🟢 100	🟢 100	–

👍 2 groups improved, 👎 3 groups regressed, 👍 8 audits improved, 👎 6 audits regressed, 13 audits changed without impacting score

🗃️ Groups

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
JS Packages	NPM audit	🟡 56	🟡 64
Lighthouse	Performance	🔴 36	🔴 42
JSDoc coverage	Documentation coverage	🔴 24	🔴 23
Code coverage	Code coverage metrics	🟡 90	🟡 90
JS Packages	NPM outdated dependencies	🟡 84	🟡 84

16 other groups are unchanged.

🛡️ Audits

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
Lighthouse	Initial server response time was short	🟩 Root document took 600 ms	🟥 Root document took 1,150 ms
Lighthouse	Total Blocking Time	🟥 1,640 ms	🟥 970 ms
JSDoc coverage	Types coverage	🟥 241 undocumented types	🟥 241 undocumented types
JS Packages	Vulnerabilities for NPM prod dependencies.	🟨 9 vulnerabilities (2 high, 7 low)	🟨 8 vulnerabilities (1 high, 7 low)
Lighthouse	Speed Index	🟥 7.2 s	🟥 6.5 s
Lighthouse	First Contentful Paint	🟥 3.3 s	🟥 3.1 s
Lighthouse	Time to Interactive	🟥 13.6 s	🟥 12.3 s
Lighthouse	Max Potential First Input Delay	🟥 1,390 ms	🟥 700 ms
JS Packages	Outdated NPM dev dependencies.	🟨 59 outdated package versions (27 major, 24 minor, 8 patch)	🟨 60 outdated package versions (28 major, 22 minor, 10 patch)
Code coverage	Function coverage	🟩 92.5 %	🟩 91.9 %
Code coverage	Branch coverage	🟨 85.5 %	🟨 86.1 %
Code coverage	Line coverage	🟨 86.3 %	🟨 85.8 %
JSDoc coverage	Functions coverage	🟥 521 undocumented functions	🟥 520 undocumented functions
JSDoc coverage	Variables coverage	🟥 292 undocumented variables	🟥 231 undocumented variables
Lighthouse	Minimizes main-thread work	🟥 11.9 s	🟥 8.6 s
Lighthouse	JavaScript execution time	🟥 5.0 s	🟥 3.4 s
Lighthouse	Metrics	🟩 100%	🟩 100%
Lighthouse	Avoids enormous network payloads	🟩 Total size was 2,039 KiB	🟩 Total size was 2,039 KiB
Lighthouse	Uses efficient cache policy on static assets	🟨 30 resources found	🟨 30 resources found
Lighthouse	Largest Contentful Paint	🟥 11.3 s	🟥 10.7 s
Lighthouse	Server Backend Latencies	🟩 1,540 ms	🟩 1,710 ms
Lighthouse	Reduce unused JavaScript	🟥 Potential savings of 179 KiB	🟥 Potential savings of 180 KiB
Lighthouse	Network Round Trip Times	🟩 50 ms	🟩 30 ms
Lighthouse	Reduce unused CSS	🟥 Potential savings of 102 KiB	🟥 Potential savings of 102 KiB
Lighthouse	Remove duplicate modules in JavaScript bundles	🟥 Potential savings of 78 KiB	🟥 Potential savings of 104 KiB
JS Packages	Vulnerabilities for NPM dev dependencies.	🟥 11 vulnerabilities (1 critical, 5 moderate, 5 low)	🟥 14 vulnerabilities (1 critical, 4 moderate, 9 low)
JS Packages	Outdated NPM prod dependencies.	🟨 16 outdated package versions (3 major, 8 minor, 5 patch)	🟨 14 outdated package versions (3 major, 7 minor, 4 patch)

578 other audits are unchanged.