v0.3.0

Durable site data and cleaner request APIs — the persistence half of page actions.

Highlights

• Key-value store — $app->store() with JSON values in storage/store.sqlite, atomic add(), prefix listing, shared-host hardening, and store:* CLI commands
• Query parameter accessors — Request::queryParam() and queryParams() for routine reads without hand-rolled parse_str() guards
• Clearer Request naming — query() → queryString(), baseUrl() → origin() (behavior unchanged)

See CHANGELOG.md for the full list.