feat(ai): optimize code action

[bytemain]

Types

• 🎉 New Features

Background or solution

1. show magic wand icon
2. search code blocks in the visible ranges

Changelog

[railway-app]

This PR is being deployed to Railway 🚅

core: ◻️ REMOVED

[codecov]

Codecov Report

Attention: Patch coverage is 17.64706% with 112 lines in your changes are missing coverage. Please review.

Project coverage is 56.12%. Comparing base (9ff7278) to head (eb5c59a).

Files	Patch %	Lines
packages/ai-native/src/browser/languages/parser.ts	11.76%	26 Missing and 4 partials ⚠️
...ages/editor/src/browser/light-bulb-widget/index.ts	18.51%	20 Missing and 2 partials ⚠️
...ackages/ai-native/src/browser/languages/service.ts	33.33%	8 Missing and 2 partials ⚠️
...wser/languages/tree-sitter/language-facts/index.ts	0.00%	9 Missing and 1 partial ⚠️
...widget/inline-chat/inline-chat.feature.registry.ts	0.00%	8 Missing ⚠️
.../src/browser/languages/tree-sitter/wasm-manager.ts	0.00%	5 Missing and 1 partial ⚠️
...languages/tree-sitter/language-facts/javascript.ts	0.00%	5 Missing ⚠️
...owser/languages/tree-sitter/language-facts/java.ts	20.00%	4 Missing ⚠️
packages/core-browser/src/style/icon/icon.ts	62.50%	2 Missing and 1 partial ⚠️
...ser/languages/tree-sitter/language-facts/golang.ts	0.00%	2 Missing ⚠️
... and 7 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3541      +/-   ##
==========================================
- Coverage   56.15%   56.12%   -0.03%     
==========================================
  Files        1485     1487       +2     
  Lines       90942    91015      +73     
  Branches    17666    18500     +834     
==========================================
+ Hits        51070    51085      +15     
+ Misses      39849    36339    -3510     
- Partials       23     3591    +3568     

Flag	Coverage Δ
jsdom	51.48% <17.64%> (-0.03%)	⬇️
node	15.66% <5.14%> (-0.01%)	⬇️

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