gut(agents): remove default field from AgentConfig, introduce sole-agent auto-selection#2274
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alexey-pelykh merged 1 commit intomainfrom Apr 11, 2026
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…agent auto-selection (#1575) Remove the `default: boolean` field from `AgentConfig` type and zod schema. Introduce `resolveSoleAgentId()` (returns agent ID when exactly one is configured, null otherwise) and `requireSoleAgentId()` (throws for zero or multiple agents). Deprecate `resolveDefaultAgentId()` as a temporary shim delegating to the new function — callers migrate in #1576–#1581. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
default?: booleanfromAgentConfigtype and zod schemaresolveSoleAgentId(cfg)— returns agent ID when exactly one is configured, null otherwiserequireSoleAgentId(cfg)— throws descriptive error for zero or multiple agentsresolveDefaultAgentId()as a temporary shim delegating toresolveSoleAgentId(removed once all callers migrate in gut: replace routing fallback with explicit failure #1576–gut: config migration for deprecateddefault: truefield #1581)main-session.ts,legacy.shared.ts,legacy.rules.ts,agent-dirs.ts, andthread-ownershipextensiondefault: truefrom all test fixtures across 19 test filesTest plan
resolveSoleAgentIdtests: returns ID for single agent, null for zero/empty/multiplerequireSoleAgentIdtests: returns ID for single, throws for zero/empty/multiple with descriptive messagesdefault: truefrom config fixturesCloses #1575
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