Session fixes, pt. 1 (#3762)

* Update persisted schema for new source of truth, implement in existing session

(cherry picked from commit b1e5f12baee932721d66c60dd51c981b46b0c274)

* Improve toasts, log caught error, during switch account

(cherry picked from commit fe0d1507063d2e532b7b1a447670b689292d1dc3)

* Handle thrown errors from initSession during login

(cherry picked from commit 2c85c045917e923901284b9ba310a82e28f37b5c)

---------

Co-authored-by: Eric Bailey <git@esb.lol>

src/state/persisted/schema.ts

@@ -4,7 +4,10 @@ import {deviceLocales, prefersReducedMotion} from '#/platform/detection'
 
 const externalEmbedOptions = ['show', 'hide'] as const
 
-// only data needed for rendering account page
+/**
+ * A account persisted to storage. Stored in the `accounts[]` array. Contains
+ * base account info and access tokens.
+ */
 const accountSchema = z.object({
   service: z.string(),
   did: z.string(),
@@ -19,12 +22,26 @@ const accountSchema = z.object({
 })
 export type PersistedAccount = z.infer<typeof accountSchema>
 
+/**
+ * The current account. Stored in the `currentAccount` field.
+ *
+ * In previous versions, this included tokens and other info. Now, it's used
+ * only to reference the `did` field, and all other fields are marked as
+ * optional. They should be considered deprecated and not used, but are kept
+ * here for backwards compat.
+ */
+const currentAccountSchema = accountSchema.extend({
+  service: z.string().optional(),
+  handle: z.string().optional(),
+})
+export type PersistedCurrentAccount = z.infer<typeof currentAccountSchema>
+
 export const schema = z.object({
   colorMode: z.enum(['system', 'light', 'dark']),
   darkTheme: z.enum(['dim', 'dark']).optional(),
   session: z.object({
     accounts: z.array(accountSchema),
-    currentAccount: accountSchema.optional(),
+    currentAccount: currentAccountSchema.optional(),
   }),
   reminders: z.object({
     lastEmailConfirm: z.string().optional(),