Summary

• define and enforce a repository-wide 450-line maintained-source limit
• split oversized runtime, generator, policy, test, and operations modules while preserving public behavior
• make production metrics smoke checks compatible with Cloudflare Worker isolate scope
• harden browser loading for Google Maps partial availability and Grok Spiral NodeNext imports
• align documentation, CI gates, language coverage checks, and visual QA workflows

Root causes addressed

• production smoke expected route samples to persist across Worker isolates
• split smoke operations lost the injected retry helper
• language coverage auditing still scanned the former monolithic smoke file
• source-size policy existed locally but was not enforced by CI
• partial Google Maps loading could expose a non-constructible InfoWindow value

Verification

• formatting, repository source-size check, lint, and type-check pass locally
• production smoke helper tests: 7/7
• web unit tests: 63/63
• codebook/policy/address-gap focused suites pass
• production build passes for all workspace packages
• desktop/mobile browser QA completed; only the expected invalid Google Maps key warning remained
• independent code review: no remaining Critical, Important, or Minor findings
• full-data script/API checks are delegated to CI because the local sparse checkout excludes the 7.56 GiB region distribution

Refs #65