Launch HN: Canary (YC W26) – AI QA that understands your code

Hey HN! We're Aakash and Viswesh, and we're building Canary ( https://www.runcanary.ai ). We build AI agents that read your codebase, figure out what a pull request actually changed, and generate and execute tests for every affected user workflow. Aakash and I previously built AI coding tools at Windsurf, Cognition, and Google. AI tools were making every team faster at shipping, but nobody was testing real user behavior before merge. PRs got bigger, reviews still happened in file diffs, and changes that looked clean broke checkout, auth, and billing in production. We saw it firsthand. We started Canary to close that gap. Here's how it works: Canary starts by connecting to your codebase and understands how your app is built: routes, controllers, validation logic. You push a PR and Canary reads the diff, understands the intent behind the changes, then generates and runs tests against your preview app checking real user flows end to end. It comments directly on the PR with test results an