feat(account-usage): sidebar Usage view with Claude/Codex quota bars + on-track pace markers

Consumes GET /usage (transport-contract 0.25.0). DaisyUI progress bars per quota
window with a dot at the elapsed fraction of the window (the 'on track' level),
ahead/under-pace labels, reset countdowns, stale/unavailable/not-configured states.

1 files changed, 27 insertions, 0 deletions

diff --git a/src/features/account-usage/index.ts b/src/features/account-usage/index.ts
new file mode 100644
index 0000000..73f2592
--- /dev/null
+++ b/src/features/account-usage/index.ts
@@ -0,0 +1,27 @@
+export type {
+  AccountUsageLimit,
+  AccountUsageProviderId,
+  AccountUsageReport,
+  AccountUsageResponse,
+  AccountUsageResult,
+  AccountUsageState,
+  LoadAccountUsage,
+} from "./logic/types";
+export type { BarTone, ProviderCardView, UsageBarView } from "./logic/view-model";
+export {
+  elapsedFraction,
+  formatAge,
+  formatDuration,
+  normalizeAccountUsage,
+  viewProviderCard,
+  viewProviderCards,
+  viewUsageBar,
+} from "./logic/view-model";
+export { default as AccountUsageView } from "./ui/AccountUsageView.svelte";
+export { default as UsageBar } from "./ui/UsageBar.svelte";
+
+/** Public module manifest — aggregated by the shell's "Loaded Modules" view. */
+export const manifest = {
+  name: "account-usage",
+  description: "Claude + Codex subscription usage bars with on-track pace markers",
+} as const;