Create input simulation test harness for keyboard injection methods

[google-labs-jules]

This change introduces a comprehensive test harness for the coldvox-text-injection crate, enabling robust testing of keyboard simulation methods. It includes a new test application, refactored tests, and fixes for critical bugs found during code review.

Fixes #271

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PR created automatically by Jules for task 16715640920749840072 started by @Coldaine

[google-labs-jules]

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[qodo-code-review]

CI Feedback 🧐

(Feedback updated until commit 2b80ca3)

A test triggered by this PR failed. Here is an AI-generated analysis of the failure:

Action: CI Success Summary

Failed stage: Generate CI Report [❌]

Failure summary: The action failed because the build_and_check job was cancelled and did not complete successfully. The CI script checks if critical stages passed, and it detected that: - build_and_check had status "cancelled" instead of "success" - text_injection_tests had status "cancelled" instead of "success" The script explicitly checks if [[ "cancelled" != "success" ]] and exits with error code 1 when this condition is true, causing the workflow to fail.

Relevant error logs: 1: Runner name: 'laptop-extra' 2: Runner group name: 'Default' ... 89: [command]/usr/bin/git sparse-checkout disable 90: [command]/usr/bin/git config --local --unset-all extensions.worktreeConfig 91: ##[group]Checking out the ref 92: [command]/usr/bin/git checkout --progress --force refs/remotes/pull/275/merge 93: Previous HEAD position was 2b80ca36 feat(text-injection): create input simulation test harness 94: HEAD is now at 0ea6ff4d Merge 2b80ca360ed94c6edfa0b4bb0d1510cec711b79f into ccd2ca519586001ee377937dedba8420549b4ae0 95: ##[endgroup] 96: [command]/usr/bin/git log -1 --format=%H 97: 0ea6ff4d1c2988e73f6e105b6f0fe5e46937bcf0 98: ##[group]Run echo "## CI Report" > report.md 99: �[36;1mecho "## CI Report" > report.md�[0m 100: �[36;1mecho "- validate-workflows: success" >> report.md�[0m 101: �[36;1mecho "- setup-whisper-dependencies: success" >> report.md�[0m 102: �[36;1mecho "- build_and_check: cancelled" >> report.md�[0m 103: �[36;1mecho "- text_injection_tests: cancelled" >> report.md�[0m 104: �[36;1mif [[ "success" != "success" ]]; then echo "::error::Setup Whisper dependencies failed."; exit 1; fi�[0m 105: �[36;1mif [[ "cancelled" != "success" ]]; then echo "::error::Build and check failed."; exit 1; fi�[0m 106: �[36;1mif [[ "cancelled" != "success" ]]; then echo "::error::Text injection tests failed."; exit 1; fi�[0m 107: �[36;1mecho "All critical stages passed successfully."�[0m 108: shell: /usr/bin/bash --noprofile --norc -e -o pipefail {0} 109: env: 110: RUSTFLAGS: -D warnings 111: CARGO_TERM_COLOR: always 112: WHISPER_MODEL_SIZE: tiny 113: MIN_FREE_DISK_GB: 10 114: MAX_LOAD_AVERAGE: 5 115: ##[endgroup] 116: ##[error]Build and check failed. 117: ##[error]Process completed with exit code 1. 118: Post job cleanup.