fix(auth): sort org memberships by creation date

[saddlepaddle]

Summary

• Adds orderBy: desc(members.createdAt) to membership queries so the most recently created org is selected by default when no active org is set on the session
• Fixes the issue where users get signed into older test orgs instead of their primary org

Changes

• packages/auth/src/server.ts — customSession plugin now picks newest membership first
• packages/trpc/src/router/user/user.ts — myOrganization and myOrganizations both return orgs newest-first

Test plan

• Sign out and sign back in — should land on the most recently created org
• Org switcher list should show newest orgs first

Summary by CodeRabbit

Release Notes

• Bug Fixes
  • Improved membership selection consistency to reliably choose the most recently created record when multiple options are available, ensuring more predictable behavior across user account and organization features.

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR adds deterministic ordering to membership queries by importing the desc function from drizzle-orm and applying orderBy: desc(members.createdAt) to membership lookups across two files. This ensures that when multiple memberships match the query criteria, the most recently created membership is consistently selected.

Changes

Cohort / File(s)	Summary
Membership Query Ordering packages/auth/src/server.ts, packages/trpc/src/router/user/user.ts	Added desc import from drizzle-orm and applied orderBy: desc(members.createdAt) to membership queries: customSession flow in server.ts, and myOrganization/myOrganizations in user.ts to ensure deterministic selection of the most recently created membership.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix(web): org switching now updates sidebar and improve dropdown UX #970: Modifies membership lookup queries in the same file (packages/trpc/src/router/user/user.ts), specifically altering the myOrganization where-clause filtering logic.

Poem

🐰 ✨

Fresh memberships hop into sight,
Ordered newest, oh what delight!
desc(createdAt) guides the way,
Latest wins, deterministic day! 🎯

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: sorting organization memberships by creation date to resolve membership selection issues.
Description check	✅ Passed	The description includes a clear summary of changes and test plan, though it omits several template sections like Related Issues and Type of Change.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch sort-orgs-by-creation-date

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[github-actions]

🧹 Preview Cleanup Complete

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• ✅ Neon database branch
• ✅ Electric Fly.io app

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