CCExtractor v1.00 Release

CCExtractor’s v1.00 release requires confidence across every part of the project. Currently, test results in CCExtractor are not fully reliable — tests break or appear to be fixed by PRs that do not even touch the relevant code, making it difficult to confidently assess regressions and overall stability. This proposal focuses on strengthening the testing infrastructure as a whole and making it reliable again, fixing regressions that lead to incorrect outcomes, expanding test coverage to parts of the codebase that are not properly verified today, syncing the Flutter GUI with the CLI so all supported features are accessible, and stabilizing the release process so v1.00 ships cleanly across platforms. As this project gets completed, CCExtractor will be ready for its v1.00 release, with CI passing, parts of the codebase that are currently untested covered, an up-to-date CCExtractor GUI, and a streamlined release and development workflow.