fix(templates): deliver added deps via runtime_env (audio, e2e-timeseries, image-search)

[Aydin-ab]

Wire added deps to workers/replicas via runtime_env so the standalone Service/Job path matches the workspace (per the /template skill Runtime skew guidance, #905). Part of the dependency good-practice pass.

What changed

• audio-dataset-curation-llm-judge: add ray.init(runtime_env={pip: lock}) — it had none, so the resample UDF + Whisper/Llama actors got deps only via workspace auto-propagation.
• e2e-timeseries-forecasting (3 notebooks): add pip:lock to the existing runtime_env (was py_modules only), anchored to the package file.
• image-search-and-classification: version currency only (Ray 2.51→2.56, mlflow 2.19→2.22 across 3 configs + containerfile); ship-path deps already correctly scoped.
• numpy pin deferred to the in-flight migrate-to-multimodal branch.

Testing

/test-template on the three templates. Note: /test-template runs the workspace path (auto-propagation covers it), so it won't fully exercise the standalone Service/Job path these fixes improve.

[Aydin-ab]

/test-template audio-dataset-curation-llm-judge e2e-timeseries-forecasting image-search-and-classification