Handle CLI service errors consistently

[adamtheturtle]

Summary

• provide explicit messages and a generic fallback for VWS, Cloud Reco, and Model Target service errors
• route report authentication and polling timeouts through the shared handler
• accurately describe targets whose status is not Success
• test supported error responses through public CLI commands backed by MockVWS, without patching client methods or importing private formatters
• update vws-python-mock to 2026.8.26 for configurable Cloud Query and VuMark failures
• send the Model Target API's required views array and match shared standard/advanced dataset visibility
• retain defensive Model Target fallbacks until the linked upstream capabilities are released

Testing

• uv run prek run --all-files --hook-stage pre-commit
• uv run pytest -s -q --cov-fail-under 100 --cov=src/ --cov=tests . (151 passed, 100% branch coverage)
• mypy, pyright, pyrefly, and ty

Follow-up tracking

• Support configurable Model Target failure responses vws-python-mock#3495
• Test Model Target error responses through vws-python-mock vws-python#3169
• Use configurable Model Target failures in CLI tests #2514
• Update vws-python after Model Target error coverage work #2515

Closes #2487
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Closes #2496
Closes #2497