perf(worker): avoid accessing panda context to scan all files

[farlock]

What kind of change does this PR introduce?

Fixes #160

The getFiles() method is part of PandaContext It scans the entire project and returns all files matching the Panda CSS include/exclude patterns. This is slow on large projects (Complexity O(N)).

Code Changes:

• Modified plugin/src/utils/worker.ts to use Generator instead of PandaContext:
  • Before: loadConfigAndCreateContext() → Creates full PandaContext
  • After: loadConfig() + new Generator() → Creates minimal context

isValidFile needed to be adapted. It now:

• Gets the include and exclude patterns from config ( e.g. ['src/**/*.{ts,tsx}'])
• Convert the file path to be relative to the config directory
• Use micromatch to check if the path matches the patterns directly (Complexity O(1))

Performance Impact

Tested on a large scale repository with TIMING=1 npx eslint --fix someFile

Before

Rule                                    | Time (ms) | Relative
:---------------------------------------|----------:|--------:
@pandacss/file-not-included             | 12138.285 |    98.9%

After

Rule                                    | Time (ms) | Relative
:---------------------------------------|----------:|--------:
@pandacss/file-not-included             |  1154.767 |    90.9%

-> perf gain is ~10x

Breaking Changes

isValidFile should have the same behaviour

How can this change be tested

1. i run the plugin in my app and for me it works, @anubra266 can you please help testing this
2. tests are passing ✅ after some changes on the worker context (they are commented in the pr comments)

[farlock]

The test files import Panda artifacts from ./panda/... The generator needs this importMap to correctly identify these imports as belonging to Panda.

[farlock]

Ensures that all files used in tests (e.g., App.tsx) are considered valid

[farlock]

Th sandbox/v9/panda.config.ts sets jsxFactory to 'panda', but the tests use styled (e.g., styled.div). Overriding this to 'styled' ensures that matchImports correctly identifies styled as the JSX factory, enabling rules like no-dynamic-styling to work correctly....

[farlock]

the tests rely on the specific configuration (tokens, recipes, conditions) defined in
sandbox/v9/panda.config.ts