fix(window): fix error when adding account and serializing bad API data

internal_packages/account-sidebar/lib/sidebar-item.coffee

@@ -132,6 +132,14 @@ class SidebarItem
   @forUnread: (accountIds, opts = {}) ->
     categories = accountIds.map (accId) =>
       CategoryStore.getStandardCategory(accId, 'inbox')
+
+    # NOTE: It's possible for an account to not yet have an `inbox`
+    # category. Since the `SidebarStore` triggers on `AccountStore`
+    # changes, it'll trigger the exact moment an account is added to the
+    # config. However, the API has not yet come back with the list of
+    # `categories` for that account.
+    categories = _.compact(categories)
+
     perspective = MailboxPerspective.forUnread(categories)
     id = 'Unread'
     id += "-#{opts.name}" if opts.name

src/browser/application.coffee

@@ -223,7 +223,7 @@ class Application
         title: "Welcome to N1"
         windowProps: page: "welcome"
       })
-      # The onboarding window automatically shows when it's ready
+      @windowManager.ensureWindow(WindowManager.WORK_WINDOW)
 
   _resetConfigAndRelaunch: =>
     @setDatabasePhase('close')
@@ -232,10 +232,7 @@ class Application
       @config.set('nylas', null)
       @config.set('edgehill', null)
       @setDatabasePhase('setup')
-      @windowManager.ensureWindow(WindowManager.ONBOARDING_WINDOW, {
-        title: "Welcome to N1"
-        windowProps: page: "welcome"
-      })
+      @openWindowsForTokenState()
 
   _deleteDatabase: (callback) ->
     @deleteFileWithRetry path.join(@configDirPath,'edgehill.db'), callback

src/flux/attributes/attribute-collection.coffee

@@ -55,6 +55,12 @@ class AttributeCollection extends Attribute
   fromJSON: (json) ->
     return [] unless json && json instanceof Array
     objs = []
+
+    # Note: It's possible for a malformed API request to return an array
+    # of null values. N1 is tolerant to this type of error, but shouldn't
+    # happen on the API end.
+    json = _.compact(json)
+
     for objJSON in json
       if @itemClass.prototype.fromJSON?
         obj = new @itemClass

src/mailbox-perspective.coffee

@@ -46,6 +46,7 @@ class MailboxPerspective
     new StarredMailboxPerspective(accountsOrIds)
 
   @forUnread: (categories) ->
+    return @forNothing() if categories.length is 0
     new UnreadMailboxPerspective(categories)
 
   @forInbox: (accountsOrIds) =>