refactor(config): change default category from Inbox to Todo

lua/pending/config.lua

@@ -18,7 +18,7 @@ local M = {}
 local defaults = {
   data_path = vim.fn.stdpath('data') .. '/pending/tasks.json',
   default_view = 'category',
-  default_category = 'Inbox',
+  default_category = 'Todo',
   date_format = '%b %d',
   date_syntax = 'due',
   category_order = {},

spec/store_spec.lua

@@ -92,7 +92,7 @@ describe('store', function()
       assert.are.equal(1, t1.id)
       assert.are.equal(2, t2.id)
       assert.are.equal('pending', t1.status)
-      assert.are.equal('Inbox', t1.category)
+      assert.are.equal('Todo', t1.category)
     end)
 
     it('uses provided category', function()