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Design spec and Plan 02 described AlertCondition polymorphism as Id.DEDUCTION, but the code that shipped in PR #140 uses Id.NAME with property="kind" and include=EXISTING_PROPERTY. The `kind` field is real on every subtype and the DB stores it in a separate column (condition_kind), so reading the discriminator directly is simpler than deduction — update the docs to match. Also add `"kind"` to the example JSON payloads so they match on-wire reality. OutboundAuth (Plan 01) correctly still uses Id.DEDUCTION and is unchanged. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>