Repeated and parallel runs

One pass says little about an agent that gets it right two times in three. --runs repeats each campaign with the identical prompt and reports the pass rate:

node --env-file=.env ./bin/lox-lanzer.js generate ./examples/fizzbuzz.lanzer --runs 5 --parallel 2

fizzbuzzLox: 4/5 passed (1× behaviour)

Flag	Effect
--runs <n>	Run each campaign n times.
--parallel <k>	Up to k of a campaign's runs at once (default 1). Campaigns in a suite still run one after another.
--min-pass <share>	Pass if this share passed: 4/5 or 80%. Default: every run. Handy in CI.

• Clean and separate. Each run gets its own copy of the workspace at <workspace>.runs/<time>/run-<i>/, without the generated files, so no run can read another's answer. The copies stay for inspection.
• Fresh services. Each run is validated with its own language services, so one run can't pass on a function another wrote.
• Full reports. Every run keeps its report, numbered run 2/5.

Without --runs, generate writes into the workspace itself.