fix(overview): ASR 状态在凭据保存后未刷新仍显示「未配置」

[H-Chris233]

User description

修复 issue #532 — 概览页 ASR 语音状态在 Settings 中保存凭据后仍显示「未配置」。

根因： Overview 页的 refreshCredentials() 只在 prefs?.activeAsrProvider 变化时触发。当用户在 Settings 中填写/更新 ASR 凭据（如 volcengine 的 APP ID、Access Token、Resource ID）但不切换提供商时，该依赖不变，凭据状态不会被重新拉取。

修复：

1. Rust set_credential 命令保存凭据后 emit credentials:changed Tauri 事件
2. Overview 新增 useEffect 监听该事件，收到后调用 refreshCredentials()

Test plan:

• 在 Settings → 服务 中配置 volcengine ASR（填写 APP ID、Access Token、Resource ID），保存后切回 Overview，验证「ASR 语音」卡片显示「已配置」
• 在 Settings 中切换 ASR 提供商（如切换到 siliconflow），验证 Overview 状态正确更新
• 在 Settings 中清空凭据，验证 Overview 状态变为「未配置」
• 验证 LLM 配置状态不受影响

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PR Type

Bug fix

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Description

• Refresh ASR status after credential saves

• Emit credentials:changed from backend

• Listen for credential updates on Overview

• Keep LLM status behavior unchanged

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Diagram Walkthrough

flowchart LR
  A["set_credential saves credentials"] -- "emit `credentials:changed`" --> B["Overview listens for credential updates"]
  B -- "call `getCredentials()`" --> C["Refresh ASR configured status"]

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File Walkthrough

Relevant files

Bug fix

commands.rs Emit credential change event after save                                    openless-all/app/src-tauri/src/commands.rs Returns Ok(()) after credential writes complete. Emits credentials:changed on every save or removal. Notifies the frontend that credential state changed. Supports Overview refresh without provider switching. +5/-2      Overview.tsx Listen for credential updates in Overview                                openless-all/app/src/pages/Overview.tsx Adds a Tauri event listener for credentials:changed. Re-fetches credentials when the event is received. Updates credential status and clears errors after refresh. Cleans up the listener on unmount. +36/-0

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[github-actions]

PR Reviewer Guide 🔍

(Review updated until commit 93555d5)

Here are some key observations to aid the review process:

🎫 Ticket compliance analysis 🔶 532 - Partially compliant Compliant requirements: 保存凭据后触发概览页重新拉取凭据状态。 未修改 LLM 状态展示逻辑。 Non-compliant requirements: 无法仅从代码静态确认概览页显示一定与后端 asr_configured 的最终判定和实际转写可用性完全一致。 Requires further human verification: 需要在实际应用中验证：保存 ASR 凭据后，概览页是否立即更新为「已配置」。 需要在实际应用中验证：切换不同 ASR 供应商、清空凭据后，概览页状态是否正确刷新。 需要在实际应用中验证：LLM 卡片展示未被回归影响。

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ No major issues detected

[github-actions]

Persistent review updated to latest commit 93555d5