Update frontend api

frontend/spec/lib/api.md

@@ -16,10 +16,96 @@ The api allows the frontend to access the database. Most endpoints are authentic
 - Uses `makeAuth` to obtain a NIP 98 authorization header.
 - Calls the backend api and returns the decoded json or throws an `ApiError`.
 
-## `function get(path: string)`
+## Plan methods
 
-- Calls `callApi` with `get`
+## `function listPlans()`
 
-## `function post<T>(path: string, body: T)`
+- Calls `GET /plans`
+- Returns a list of plans
 
-- Calls `callApi` with `post` and body
+## `function getPlan(id: string)`
+
+- Calls `GET /plans/:id`
+- Returns a single plan
+
+## Tenant methods
+
+## `function listTenants()`
+
+- Calls `GET /tenants`
+- Admin only
+- Returns a list of tenants
+
+## `function getTenant(pubkey: string)`
+
+- Calls `GET /tenants/:pubkey`
+- Admin or matching tenant
+- Returns a single tenant
+
+## `function createTenant()`
+
+- Calls `POST /tenants`
+- Requires authentication
+- Creates tenant for the authorized pubkey
+
+## `function listTenantRelays(pubkey: string)`
+
+- Calls `GET /tenants/:pubkey/relays`
+- Admin or matching tenant
+- Returns relays for the tenant
+
+## `function listTenantInvoices(pubkey: string)`
+
+- Calls `GET /tenants/:pubkey/invoices`
+- Admin or matching tenant
+- Returns invoices for the tenant
+
+## `function updateTenantBilling(pubkey: string, billing: { nwc_url: string })`
+
+- Calls `PUT /tenants/:pubkey/billing`
+- Admin or matching tenant
+- Updates billing configuration
+
+## Relay methods
+
+## `function listRelays()`
+
+- Calls `GET /relays`
+- Admin only
+- Returns all relays
+
+## `function getRelay(id: string)`
+
+- Calls `GET /relays/:id`
+- Admin or relay owner
+
+## `function createRelay(input: CreateRelayInput)`
+
+- Calls `POST /relays`
+- Admin or matching tenant in payload
+- Creates a relay
+
+## `function updateRelay(id: string, input: UpdateRelayInput)`
+
+- Calls `PUT /relays/:id`
+- Admin or relay owner
+- Updates a relay
+
+## `function deactivateRelay(id: string)`
+
+- Calls `POST /relays/:id/deactivate`
+- Admin or relay owner
+
+## Invoice methods
+
+## `function listInvoices()`
+
+- Calls `GET /invoices`
+- Admin only
+- Returns all invoices
+
+## `function getInvoice(id: string)`
+
+- Calls `GET /invoices/:id`
+- Admin or invoice owner
+- Returns a single invoice