feat: generate status-specific action attempt subclasses

[razor-x]

What this means for SDK users

Every action attempt now deserializes to a subclass for its exact (action_type, status) pair, so error and result have real types exactly where they exist and the literal null type everywhere else:

$attempt = $seam->locks->lock_door(device_id: $deviceId, wait_for_action_attempt: false);

// Narrow with instanceof — no null checks needed:
if ($attempt instanceof ActionAttempt\LockDoor\Success) {
    $attempt->result->was_confirmed_by_device; // result is a real object here
}
if ($attempt instanceof ActionAttempt\LockDoor\Error) {
    $attempt->error->message; // error is a real object here
}
if ($attempt instanceof ActionAttempt\LockDoor\Pending) {
    $attempt->error;  // declared as null — assigning anything else is a TypeError
    $attempt->result; // declared as null
}

Unknown discriminator values still fall back safely, preserving the raw value: an unknown action_type gives the base ActionAttempt, an unknown status gives the action-type class (e.g. ActionAttempt\LockDoor).

A failed attempt without an error object no longer crashes ActionAttemptFailedError — it falls back to the message "Action attempt failed".

Runtime behavior is unchanged — the API always sent null; the declared types just stopped lying about it.

How

Extends #479. Bumps @seamapi/blueprint to ^1.10.0, which annotates each action-attempt property with the statuses that populate it. Codegen nests a second discrimination level under each action type using the same conventions as #479 (backed enum, tryFrom + match, unrecognized fallback keeping raw values). Properties are placed per status from the annotation alone — nothing is keyed off the names error/result. The #479 blanket "error/result nullable everywhere" workaround is removed. Side benefit: the five distinct per-action-type error shapes are now preserved instead of collapsing into one shared class.

Verification

New ActionAttemptTest (10 tests) covers every behavior above. phpunit: 274 tests, 631 assertions green. psalm: 0 errors. Regeneration from a clean install reproduces the diff exactly; only src/Resources/ActionAttempt.php changed among generated files.

🤖 Generated with Claude Code

https://claude.ai/code/session_01EdWS7o3htQ9cNxhCWL5Frp