Polish up some robots commands

[dylanjha]

• work with the new ask-questions shape, can provide answer options
• accept -f / --file convention for all robots jobs -- same thing we do for asset create
• accept --wait option for all robots jobs to wait til the job is done -- same thing we do for asset create

---

Note

Medium Risk
Touches multiple robots CLI commands and changes parameter parsing/validation and output behavior (including polling/waiting), so regressions could break existing CLI usage, but changes are confined to client-side command wiring.

Overview
Adds shared helpers in robots/_shared.ts to load job parameters from a JSON file, poll for job completion (--wait), and standardize workflow/job retrieval and terminal-status handling (with clearer failure messages via assertJobCompleted).

Updates all Robots job creation commands to support -f/--file (mutually exclusive with individual parameter flags) and --wait to poll up to 15 minutes, printing outputs on completion and failing fast on errored/cancelled. Also improves input validation (e.g., summarize --tone enum validation, find-key-moments --max-moments range checks, moderate thresholds parsing/range checks) and extends ask-questions to parse --question strings with optional answer options (text|opt1,opt2).

Refactors robots get to reuse shared workflow validation and retrieveRobotsJob, and expands unit tests across commands to cover new flags, file-mode errors, and validation.

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