fix: prompt saving issue #102

[wakenmeng]

Fix: Prompt instructions reverting to defaults after editing (#102)

Problem

Users reported that after updating prompt instructions, changes would not persist — they would revert
to the old/default instructions on next load.

Root Cause

In ThePopupBox.vue, the save and delete handlers mutated the prompt arrays in-place rather than
creating new references:

  const {AskedQuestionPrompts} = config.value
  AskedQuestionPrompts[selectedPrompt.index] = prompt  // mutates existing array
  store.updateConfig({AskedQuestionPrompts})            // same reference — storage skips write

Since updateConfig uses a shallow spread ({...storedConfig, ...newConfig}) and the array reference is
unchanged, @plasmohq/storage does not detect a change and skips persisting it. On next load, the
previously stored (old) value is restored.

Additionally, store.ts initialized config with ref(defaultConfig) — sharing the same object reference
as the module-level default, meaning in-place mutations could also corrupt the defaults themselves.

Changes

• src/csui/Index/ThePopupBox/ThePopupBox.vue
  • handleSavePrompt: use spread ([...arr]) to create a new array instead of mutating in-place
  • handleDeletePrompt: use .filter() instead of .splice() to produce a new array
• src/stores/store.ts
  • Deep-copy defaultConfig on initialization to prevent shared references