test(amazonq): performance test for building index and sending to LSP. #5685
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Problem
continuation of reliability work
Solution
buildIndexinsrc/amazonq/lsp/lspController.tscaptures many potentially high risk paths in a single function, such as some I/O operations and searching for project directories.Thresholds determined by running in CI a few times and multiplying the observed median by 1.5 to 2.0 depending on variance.
The "many files" test does 250 files w/ 10 bytes each. The "large files" does 10 files w/ 1000 bytes each. These values were chosen to avoid flakiness in CI.
Included in this PR is removing the use of fs-extra in
src/amazonq/lsp/lspController.tsLicense: I confirm that my contribution is made under the terms of the Apache 2.0 license.