[owbone]

Find a user's teamspaces under their personal org, so lookups by a user owner keep working once the control plane stops listing user-owned copies of them.

Summary

• TeamspaceApi.list_teamspaces and find_teamspace_id take an owner ID and match it against GET /v1/memberships. When nothing there is listed under the owner ID, and that ID is the authed user's, they also match the user's personal org: the org from GET /v1/orgs with is_personal_org set and creator_id equal to the user's ID. The lookup is cached per client, and with no personal org the behaviour is unchanged.
• Another user's ID can't be mapped to their org, so it still matches only itself.
• This covers every caller that finds a teamspace by a user without touching them: Teamspace.__init__ (the owner/name slug fallback, user=, LIGHTNING_USERNAME, teamspace_owner_type: user), Owner.teamspaces for a User, and the default teamspace in llm.py.
• The drive CLI (ls, cp) and accessible_teamspaces are unchanged: they already resolve by org.

Why

gridai/grid#49036 removes a shim from ListMemberships that added a user-owned copy of every teamspace in the caller's personal org (from gridai/grid#41843). Without it, every SDK lookup by a user owner finds nothing.

Testing

• New tests in tests/api/test_teamspace_api.py, against memberships listed only by org: the authed user's ID finds its personal org's teamspaces and lists orgs once; with no personal org, nothing is found; another user's ID and an org ID are not mapped and list no orgs.
• test_get_teamspace_error now mocks whoami, since its owner has no memberships.
• Full suite: 2689 passed, 8 skipped. Ruff 0.1.0 and mypy are clean; the pre-commit hooks weren't run.
• Against staging, which still lists the user-owned copies: the authed user's personal org resolves to oliver-org, and with the user-owned copies filtered out of the memberships, find_teamspace_id("general", <user id>) still finds general. Not verified: list_teamspaces and Teamspace(..., user=...) end to end.

🤖 Generated with Claude Code

_{— Claude Opus 5.5, on direct instruction; text not reviewed}

[owbone]

Closing in favour of removing user-owner teamspace lookups altogether: every teamspace is owned by an org now.

_{— Claude Opus 5.5, on direct instruction; text not reviewed}