v0.1.0 of swissarmyknife

Production-grade Dart utilities with extensions, functional types, async control, validation, HTTP helpers, caching, and app infrastructure. Changelog excerpt: - Added release-grade package metadata, platform declarations, and public documentation links for the v0.1.0 package boundary. - Added a Jaspr documentation site and GitHub Pages deployment workflow. - Added CI, tag-triggered GitHub release workflow, and local release verifier covering format, analysis, tests, web compilation, dartdoc, pub dry-run, and site build. - Added .pubignoreto keep agent files, release tooling, local wiki source, and site source out of the pub.dev archive. - Made Env[...]