Wire codegen dispatch for perry/i18n format wrappers (Currency, Percent, FormatNumber, ShortDate, LongDate, FormatTime, Raw)

[proggeramlug]

Context

Surfaced during the v0.5.299 docs audit. The perry/i18n module exports 8 functions per types/perry/i18n/index.d.ts:

t, Currency, Percent, ShortDate, LongDate, FormatNumber, FormatTime, Raw

All 7 format wrappers have runtime implementations in crates/perry-runtime/src/i18n.rs:633-823:

• perry_i18n_format_number
• perry_i18n_format_currency
• perry_i18n_format_percent
• perry_i18n_format_date (used by ShortDate and LongDate)
• perry_i18n_format_time

But crates/perry-codegen/src/lower_call.rs only wires the t() lookup. Calls to Currency(99.99), Percent(0.5), etc. compile + link cleanly (because the runtime symbols exist) but reach the receiver-less native-call early-out at lower_call.rs:2849-2854 and return NaN-boxed undefined at runtime.

Repro:

import { Currency } from "perry/i18n"
console.log(Currency(99.99))   // prints `undefined`, expected "$99.99" (or locale equivalent)

What to do

Add UiSig rows in crates/perry-codegen/src/lower_call.rs (the same table that already wires perry/ui and perry/system) that map each TS-callable name to its runtime symbol:

UiSig { method: "Currency",     runtime: "perry_i18n_format_currency", args: &[UiArgKind::F64], ret: UiReturnKind::Str },
UiSig { method: "Percent",      runtime: "perry_i18n_format_percent",  args: &[UiArgKind::F64], ret: UiReturnKind::Str },
UiSig { method: "FormatNumber", runtime: "perry_i18n_format_number",   args: &[UiArgKind::F64], ret: UiReturnKind::Str },
UiSig { method: "ShortDate",    runtime: "perry_i18n_format_date_short", args: &[UiArgKind::F64], ret: UiReturnKind::Str },
UiSig { method: "LongDate",     runtime: "perry_i18n_format_date_long",  args: &[UiArgKind::F64], ret: UiReturnKind::Str },
UiSig { method: "FormatTime",   runtime: "perry_i18n_format_time",    args: &[UiArgKind::F64], ret: UiReturnKind::Str },
UiSig { method: "Raw",          runtime: "perry_i18n_format_raw",     args: &[UiArgKind::F64], ret: UiReturnKind::Str },

ShortDate and LongDate may need either two distinct runtime exports or a single perry_i18n_format_date(value, style_flag) shape — check what the runtime currently exposes and pick whichever is least invasive.

Acceptance criteria

• Each function callable from TS produces the locale-formatted string the runtime computes.
• docs/examples/i18n/snippets.ts can drop its // run: false banner — the harness should run it to a clean exit.
• docs/src/i18n/formatting.md and overview.md no longer need their "format wrappers reach the receiver-less early-out" status notes.
• Snippet test: a runtime example that calls each wrapper and prints the result, with _expected/.../*.stdout byte-diffed.

Pointers

• Wrapper definitions: types/perry/i18n/index.d.ts
• Runtime implementations: crates/perry-runtime/src/i18n.rs:633-823
• Existing dispatcher pattern: crates/perry-codegen/src/lower_call.rs — search for UiSig { method: "isDarkMode" or UiSig { method: "audioStart" for the most-similar shape (perry/system uses the exact same dispatch table for cross-module functions).
• Failing call site: lower_call.rs:2849-2854 (receiver-less early-out that swallows args).

Estimated size

Small — ~15 lines of dispatcher code plus one runtime exit-style runtime export if format_date doesn't currently distinguish short/long.

[proggeramlug]

Verified fixed — Currency(99.99) prints "$99.99", Percent(0.5) prints "50%", FormatNumber(1234567.89) prints "1,234,567.89". Wired in v0.5.298 (PERRY_I18N_TABLE in crates/perry-codegen/src/lower_call.rs + per-name runtime exports in crates/perry-runtime/src/i18n.rs).