chore: establish local platform baseline

migrations/000007_device_claim.up.sql

@@ -0,0 +1,27 @@
+BEGIN;
+
+CREATE TABLE device_claim (
+    id               uuid PRIMARY KEY DEFAULT gen_random_uuid(),
+    public_id        uuid NOT NULL UNIQUE DEFAULT gen_random_uuid(),
+    tenant_id        uuid NOT NULL REFERENCES tenant(id),
+    device_id        uuid NOT NULL,
+    token_digest     char(64) NOT NULL UNIQUE,
+    expires_at       timestamptz NOT NULL,
+    revoked_at       timestamptz,
+    used_at          timestamptz,
+    used_binding_id  uuid REFERENCES device_binding(id),
+    failed_attempts  integer NOT NULL DEFAULT 0 CHECK (failed_attempts >= 0),
+    created_at       timestamptz NOT NULL DEFAULT now(),
+    CONSTRAINT device_claim_device_tenant_fk
+        FOREIGN KEY (device_id, tenant_id) REFERENCES device(id, tenant_id),
+    CONSTRAINT device_claim_use_consistency CHECK (
+        (used_at IS NULL AND used_binding_id IS NULL) OR
+        (used_at IS NOT NULL AND used_binding_id IS NOT NULL)
+    )
+);
+CREATE INDEX device_claim_device_status_idx
+    ON device_claim (tenant_id, device_id, expires_at DESC);
+CREATE UNIQUE INDEX device_claim_one_unused_per_device
+    ON device_claim (device_id) WHERE used_at IS NULL AND revoked_at IS NULL;
+
+COMMIT;