refactor(apps): simplify query state and debounce URL writes

[lyzno1]

Summary

• Reworked useAppsQueryState into a named, domain-specific hook API with query, setKeywords, setTagIDs, and setIsCreatedByMe.
• Switched the apps search flow to nuqs parser-level debouncing for URL writes and ahooks useDebounce for TanStack Query input.
• Removed the extra mirrored search state from the /apps list and kept the debounce constant in a local feature constant.
• Updated list and hook tests to cover the new API and debounce behavior.

Testing

• pnpm --dir web test app/components/apps/__tests__/list.spec.tsx app/components/apps/hooks/__tests__/use-apps-query-state.spec.tsx
• web/node_modules/.bin/tsgo --project web/tsconfig.json --pretty false

[codecov]

Codecov Report

❌ Patch coverage is 92.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.86%. Comparing base (a60cb3b) to head (9276b61).

Files with missing lines	Patch %	Lines
.../app/components/apps/hooks/use-apps-query-state.ts	93.75%	1 Missing ⚠️
web/app/components/apps/list.tsx	87.50%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #36043      +/-   ##
==========================================
- Coverage   85.86%   85.86%   -0.01%     
==========================================
  Files        4453     4454       +1     
  Lines      210742   210711      -31     
  Branches    39423    39410      -13     
==========================================
- Hits       180956   180929      -27     
+ Misses      26546    26542       -4     
  Partials     3240     3240              

Flag	Coverage Δ
dify-ui	94.40% <ø> (ø)
web	86.61% <92.00%> (-0.01%)	⬇️

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