fix(ownership): owner IDs returned as int, crashes avatar trim()

[sentry-junior]

Summary

The ownership rules widget crashes with TypeError: e?.trim is not a function when rendering team avatars. The backend serializes owner id as a Python int; the frontend Actor type expects id: string. When the team is missing from TeamStore, the numeric ID flows into getInitials() as name, and .trim() throws on a number.

Root Cause

add_owner_ids_to_schema() in grammar.py stores the raw DB integer:

# before
rule_owner["id"] = owners_id[rule_owner["identifier"]]  # int

So the GET /api/0/{org}/{project}/ownership/ response looks like:

{ "type": "team", "name": "#my-team", "id": 2251960 }

Downstream chain:

1. TeamStore.getById(owners[0].id) — string/number mismatch, returns null
2. Fallback renders <Avatar name={teamId}> where teamId is the number 2251960
3. getInitials(name) calls name.trim() → crash

Confirmed in debugger: name = 2251960 (number), sanitizedName unavailable.

Versions Affected

Confirmed in demo org. Affects any project with ownership rules referencing teams not fully loaded in TeamStore.

Related

• Draft PR: fix(ownership): serialize owner IDs as strings to match Actor type contract #110592 (cursor/ownership-rules-id-type-9ade)

Action taken on behalf of David Cramer.

[linear-code]

ENG-7046