feat: add confirmation dialog to instance disconnect

[michumichifu]

📋 Description

Adds a confirmation dialog to the instance Disconnect (logout) action on the instance dashboard.

Today, clicking Disconnect logs the instance out immediately, with no confirmation. Because this unlinks the WhatsApp session and requires re-scanning the QR code to reconnect, an accidental click is disruptive — in a multi-instance setup it can knock a live client instance offline in one click. This PR adds a simple yes/no confirmation before the logout runs.

The implementation reuses the existing confirmation-dialog pattern already used for the user-session logout in src/components/header.tsx (Radix Dialog), so it introduces no new dependencies or components and stays consistent with the project's conventions.

🔗 Related Issues

• Related to # (feature suggested in the community Discord)

🧪 Type of Change

• ✨ New feature (non-breaking change which adds functionality)
• 🎨 Style/UI changes

🧪 Testing

Test Environment

• Production-like environment

Test Cases

• Manual testing completed

Test Instructions

1. Open the dashboard of a connected instance (connectionStatus === "open").
2. Click the Disconnect button.
3. A confirmation dialog appears ("Disconnect instance?") with Cancel and Disconnect buttons.
4. Cancel closes the dialog with no side effects; Disconnect performs the logout as before.

Also verified locally: npm run type-check, eslint, and prettier --check all pass.

📸 Screenshots

After

Confirmation dialog shown before the logout runs (screenshot in PR discussion).

Notes

• New i18n keys instance.dashboard.disconnectConfirm.title / description added to all four locales (pt-BR, en-US, es-ES, fr-FR).
• The confirm button reuses the existing instance.dashboard.button.disconnect label; the cancel button reuses button.cancel.
• No API/behavior change beyond gating the existing logout call behind a confirmation.

Summary by Sourcery

Add a confirmation dialog before disconnecting an instance from the dashboard to prevent accidental logouts.

New Features:

• Prompt users with a confirmation dialog when triggering the instance disconnect action on the dashboard.

Enhancements:

• Extend existing dialog UI components and translations to support the new disconnect confirmation flow across all locales.

[sourcery-ai]

Reviewer's Guide

Adds a confirmation dialog flow around the instance disconnect/logout action on the dashboard, reusing the shared Dialog component and wiring it to i18n, while keeping the underlying logout behavior unchanged.

Sequence diagram for new instance disconnect confirmation flow

sequenceDiagram
  actor User
  participant DashboardInstance
  participant Dialog

  User->>DashboardInstance: clickDisconnectButton
  DashboardInstance->>DashboardInstance: setLogoutConfirmation(true)
  DashboardInstance->>Dialog: render Dialog open=true

  User->>Dialog: clickCancel
  Dialog->>DashboardInstance: setLogoutConfirmation(false)

  User->>Dialog: clickConfirmDisconnect
  Dialog->>DashboardInstance: setLogoutConfirmation(false)
  Dialog->>DashboardInstance: handleLogout(instance.name)

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File-Level Changes

Change	Details	Files
Gate the instance disconnect/logout action behind a confirmation dialog using the existing Dialog component.	Introduce logoutConfirmation state to control dialog visibility. Change the Disconnect action handler to open the confirmation dialog instead of calling handleLogout directly. Render a Dialog tied to logoutConfirmation with title, description, and footer actions. Wire the cancel button to close the dialog without side effects. Wire the confirm button to close the dialog and then call handleLogout with the instance name.	src/pages/instance/DashboardInstance/index.tsx
Add localized strings for the new disconnect confirmation dialog across all supported locales.	Add instance.dashboard.disconnectConfirm.title and instance.dashboard.disconnectConfirm.description keys in English. Add the same disconnectConfirm title/description keys in Spanish. Add the same disconnectConfirm title/description keys in French. Add the same disconnectConfirm title/description keys in Portuguese (pt-BR).	src/translate/languages/en-US.json src/translate/languages/es-ES.json src/translate/languages/fr-FR.json src/translate/languages/pt-BR.json
Minor JSX formatting adjustments for consistency and compactness.	Inline single-expression conditional rendering of ownerJid. Inline single-expression AlertTitle translation call. Condense QR code / loading spinner ternary into a single line.	src/pages/instance/DashboardInstance/index.tsx

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