Reusable agent templates, a library of execution strategies, and parallel agent teams with quality gates

Failure modes

Symptom	Cause	Fix	Severity
`RuntimeWarning: coroutine 'run' was never awaited`	`AgentTeam.run` / `ExecutionStrategy.execute` called without `await`	both are async — `await` them	high
`get_strategy(name)` raises	unknown name (`ValueError`), or an arg-taking name like `conditional`/`nested` (`TypeError`)	use one of the nine no-arg names; construct arg-taking strategies directly	medium
`get_template(id)` returns `None`	no template with that id	list ids via `get_all_templates()`	low
A gate blocks but the agent never ran	a `GateSpec.agent_key` does not match any `WorkflowAgent.key`	the agent has no score so the gate fails closed — align the keys	medium

run and execute are async. AgentTeam.run and ExecutionStrategy.execute must be awaited.
get_strategy resolves the nine no-arg strategies. The registry also holds conditional/multi_conditional/nested/ nested_sequential, which require constructor args (fetching them bare raises TypeError).
Gates fail closed. A GateSpec whose agent errored or produced no score fails the gate rather than passing silently.