Clarify run_script productive client return shape in docs

[titouanmathis]

Small docs follow-up from live testing of the runner-backed run_script.

The injected productive client returns flattened records (read id, name, number directly, not JSON:API .type/.attributes) and list returns { data, meta } (e.g. meta.total_count). The scripting docs (surfaced by search_docs) now say so, and the example shows bounding large queries with { per_page: 50 } (a slow unbounded tasks.list({status:'open'}) was the one rough edge in testing).

Docs-only; no behavior change. 11 doc/search tests pass, npm run check clean.

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.27%. Comparing base (4c8656f) to head (57d8719).
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #183   +/-   ##
=======================================
  Coverage   97.27%   97.27%           
=======================================
  Files         266      266           
  Lines        8867     8867           
  Branches     2777     2787   +10     
=======================================
  Hits         8625     8625           
  Misses        236      236           
  Partials        6        6           

Flag	Coverage Δ
unittests	97.27% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.