Introduce a Pennant PriceExperiment feature (control vs a higher price tier),
salted independently of the trial experiment. The assigned variant's prices and
Stripe lookup keys flow through ExperimentOffer into the shared pricing prop
(paywall + upgrade dialogs) and into checkout server-side, so the price shown
always equals the price charged. stripe:sync-prices now also creates the variant
tiers. Inert until PRICE_EXPERIMENT_STARTED_AT is set.
## What
The same currency-symbol money formatter — a `match` on
`strtolower($currency)` returning a symbol, concatenated with
`number_format($cents / 100, 2)` — was copy-pasted across **five**
files:
- `app/Console/Commands/SendExperimentFunnelReportCommand.php`
(`money(int $cents, …)`)
- `app/Listeners/PostStripeEventToDiscord.php` (`money(int $amount, …)`)
- `app/Console/Commands/SyncStripePricesCommand.php` (`formatAmount(int
$amountInCents, …)`)
- `app/Console/Commands/StripeSubscriptionStatsCommand.php`
(`format(float $amount, …)`)
- `app/Console/Commands/SendDailyStatsReportCommand.php` (`money(float
$amount, …)`)
This extracts it into a single `App\Support\Money::format(int $cents,
string $currency): string` helper and removes the duplicated logic from
every site.
## Zero behavior change
The five copies were **not** verbatim — they diverged on three axes:
unit (cents vs. major units), symbol coverage, and default casing. The
shared helper is the **union** of the existing maps
(`eur`/`gbp`/`usd`/`jpy`/`brl`, otherwise uppercased code + trailing
space), and reproduces every call site's output for the currencies each
actually receives:
- **Cents-based sites** (experiment funnel, Discord listener, price
sync) call the helper directly.
- The experiment funnel only ever passes the Cashier currency
(uppercased `EUR` from the collector), so its narrower map / raw-case
default was a dead branch.
- The price sync command only formats `config('cashier.currency')`
(`eur`), so it never hit `usd`/`brl` — adding those symbols is a no-op
here.
- **Major-unit sites** (`StripeSubscriptionStatsCommand`,
`SendDailyStatsReportCommand`) hold MRR as floats, so their private
method now converts to cents (`(int) round($amount * 100)`) and
delegates; call sites are untouched. `number_format` of the
round-tripped value is identical to the original.
## Tests
- New `tests/Unit/Support/MoneyTest.php` covering `eur`, `gbp`, `usd`,
`jpy`, `brl`, an unknown currency (`chf` → `CHF 3.99`),
case-insensitivity, thousands separator, and zero.
- The existing command feature tests (which assert exact rendered
strings like `€10.00`, `€19.99`, `€9.99 / month → €3.99 / month`) still
pass unchanged.
`pint`, `phpstan`, and the affected feature + unit tests are green
locally (42 passing).
## Summary
- **Dynamic Stripe price resolution**: Replaces hardcoded
`stripe_price_id` env vars with lookup-key-based resolution
(`stripe_lookup_key`). A new `php artisan stripe:sync-prices` command
creates/updates Stripe prices from `config/subscriptions.php`
automatically.
- **Locale-aware currency formatting**: Replaces all
`getCurrencySymbol() + toFixed(2)` patterns with `formatCurrency()`
(backed by `Intl.NumberFormat`) across `welcome.tsx`, `paywall.tsx`,
`billing.tsx`, and `step-create-account.tsx`, so symbol position and
separators are correct for the user's locale (e.g. `3,90 €` in Spanish).
- **EUR defaults and updated plan prices**: Cashier currency defaulted
to EUR, plan prices updated to €7.80/month and €46.80/year, and
`pricing.currency` is now shared as an Inertia prop.
- **Promo/discount cleanup**: Removed all FOUNDER discount mentions and
Discord community links from the paywall, landing pricing section, and
invitation email.