aklivity/zilla: technical due diligence, read from its repository

The median source file here is 78 lines. 104 files exceed 1,000 lines, the largest being 10,092. Size is not a defect on its own — some problems genuinely live in one place — but these are where merge conflicts, review fatigue and single-owner knowledge concentrate, and they are the first thing that slows an inheriting engineer down.

19,433 distinct 8-line blocks appear in two or more files. Copy-paste is the cheapest thing a generator does and among the more expensive things to inherit: a fix has to be applied everywhere the block landed, and nothing in the repository records where that is. Tests, fixtures and documentation examples are excluded — those repeat by design — so this is duplication in code that ships. Blocks are matched after normalising whitespace and only across different files.

Strings shaped like credentials appear only where fakes are usual: test fixtures, examples, documentation, placeholders and local stacks. They are almost always fakes. Ask someone to confirm that none of them works anywhere, because a real key in a development file is still a real key. 4 other matchs set aside: expired tokens, licence tokens a vendor verifies with a public key, or placeholder text where a key would go. None grants access to anything.

9 third-party CI actions are referenced by a tag or branch rather than a commit, so they run whatever that tag points to on the day. Tags have been moved to malicious commits in real supply-chain attacks, and a piped script is whatever the server returns that minute. Pinning to a commit is the fix, and it is small.

Nothing in the service initialises an error reporter (Sentry, Rollbar, Bugsnag, Honeybadger or an APM agent). An exception in production reaches a person only if someone is reading the logs, which usually means a customer reports it first.