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I want the hackmyresume build CLI to support an all-formats target.

I want the hackmyresume build CLI to support an all-formats target.: a task in MiMo-V2.6-RL-harbor-code: MiMo-V2.6-RL Code (Harbor) (Harbor dataset). If I run hackmyresume build resume.json without a TO target, it should use the same all-formats behavior with the default target path out/resume.all…

The task

If I run `hackmyresume build resume.json` without a `TO` target, it should use the same all-formats behavior with the default target path `out/resume.all`. The happy path should complete as a normal successful build and should not emit the invalid-format error for `.all`. The built-in `hackmyresume help build` output…

Part of FineEnvs/MiMo-V2.6-RL-harbor-code.