fix: surface expired Meta connect sessions

[baokimho]

Summary

Fixes the silent redirect that occurs when a Meta account-picker connect session is missing, expired, or invalid.

Previously, Messenger, Instagram, and Instagram-via-Facebook select pages redirected users back to /channels/create without explaining why the connection flow stopped.

This change preserves the existing sessionExpired reason in the redirect so /channels/create can display the already translated session-expired alert.

Changes

• Added sessionExpired to CREATE_CHANNEL_ERROR_MESSAGE_KEYS.

• Updated missing pending-auth redirects for:

  • Messenger
  • Instagram
  • Instagram via Facebook

• Reused the existing translation:
  channels.connectMany.sessionError.sessionExpired

• Updated focused tests for the affected redirects and error-code mapping.

Behavior

Before:

missing/expired pending auth
→ /channels/create
→ no explanation shown

After:

missing/expired pending auth
→ /channels/create?error=sessionExpired
→ "Your session expired. Please reconnect."

Instagram provider lookup

The existing getInstagramAccount() === null path remains unchanged and still redirects to /channels/create without sessionExpired.

That result can represent unsupported account types or provider/API failures, so it should not be classified as an expired connect session.

Validation

• TypeScript check: passed
• git diff --check: passed
• Focused Vitest: blocked before test collection by a local @vitest/pretty-format dependency mismatch
• Lint: blocked by the local pnpm/runtime environment

No application test failures were observed because Vitest did not reach test collection.

Fixes #1156

[Copilot]

🔵 Needs a closer look

Focused tests and lint were blocked by the local environment.

Pull request overview

Surfaces expired or missing Meta connect sessions with a translated error on /channels/create.

Changes:

• Adds the sessionExpired error mapping.
• Updates Messenger and Instagram redirects.
• Updates focused tests for redirects and mapping.

File summaries

File	Description
apps/builder/src/lib/workspace/create-first-workspace.ts	Adds the session-expired error mapping.
apps/builder/src/app/(no-sidebar)/channels/messenger/select/page.tsx	Preserves the expired-session reason on redirect.
apps/builder/src/app/(no-sidebar)/channels/instagram/select/page.tsx	Preserves the expired-session reason on redirect.
apps/builder/src/app/(no-sidebar)/channels/instagram-facebook/select/page.tsx	Preserves the expired-session reason on redirect.
apps/builder/__tests__/messenger-select-page.test.tsx	Tests Messenger redirect behavior.
apps/builder/__tests__/instagram-select-page.test.tsx	Tests Instagram redirect behavior.
apps/builder/__tests__/instagram-facebook-select-page.test.tsx	Tests Instagram-via-Facebook redirect behavior.
apps/builder/__tests__/create-first-workspace.test.ts	Tests the new error mapping.

Review details

• Files reviewed: 8/8 changed files
• Comments generated: 0
• Review effort level: Lite

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