Add `created_at: Option<DateTime<Utc>>` through all layers so CLI users
can backdate entities at creation/update time. When omitted, falls back
to `Utc::now()`.
- Domain: add field to all New*/Update* structs with serde(default)
- Domain: timeline events use entity created_at instead of Utc::now()
- Repos: unify INSERT to explicit Rust-side created_at with unwrap_or_else
- Repos: add created_at to UPDATE dynamic query builders
- Routes: add field to submission structs and has_changes guards
- Clients: pass created_at through manual JSON client methods
- CLI: add --created-at flag with parse_created_at helper (RFC 3339 or YYYY-MM-DD)
- Add migration 0014 to drop the notes column from cafes table
- Remove notes from domain structs, repository, view model, CLI, routes
- Remove notes textarea/column from web templates
- Update bootstrap script and all test files
Add CLI subcommands (add, list, get, update, delete) with negative
number support for coordinates. Add CafeView with map URL generation,
Askama templates for list/detail pages, and nav link between Brews
and Gear.
