Update Render Workflows skill for SDK 1.x

[Borets]

Summary

• reframe Render Workflows as an SDK-first product with local development as the primary validation loop
• make workflows init an optional starter accelerator instead of a prerequisite
• update Python and TypeScript examples for SDK 1.x, including TaskContext and ctx.run
• update CLI scaffolding, local-run, release, and deployment verification guidance
• remove embedded plan, quota, retention, and pricing details in favor of the canonical limits and pricing page
• refresh task patterns and troubleshooting for the current SDK and CLI

Validation

• parsed all Python and JSON fenced examples
• validated YAML frontmatter against the repository convention
• ran git diff --check
• exercised official Python and TypeScript starter projects locally with Render CLI 2.24.0, Python SDK 1.0.1, and TypeScript SDK 1.0.0, including task registration, named and positional inputs, and chained task execution

[ojusave]

Correction: this should have gone to renderinc/skills, which is where internal development happens. The follow-up work now lives there as renderinc/skills#43 (stacked on the internal twin of this PR, renderinc/skills#41) and renderinc/skills#42. Both are drafts pending review. The render-oss PRs I opened, #14 and #15, are closed. Apologies for the noise here.