fix(schema): preserve doc option in nested {:map, opts} fields

[dl-alexandre]

Summary

Fixes #521 - The doc: option was being lost for nested {:map, opts} fields in Schema.to_json/1.

Problem

nimble_type_to_json_schema/2 at line 460 was passing [] instead of prop_opts when converting nested map properties. This dropped doc: (and any other opts) from nested properties — they never got a "description" field in the resulting JSON Schema.

Fix

Changed [] to prop_opts at line 460:

# Before:
{to_string(prop_name), nimble_type_to_json_schema(prop_type, [])}

# After:
{to_string(prop_name), nimble_type_to_json_schema(prop_type, prop_opts)}

Test

Added test verifying that nested map properties preserve their doc: options and generate correct "description" fields in JSON Schema.

Checklist

• Tests pass (mix test)
• Code formatted (mix format)
• Credo passes (mix credo --strict)
• Dialyzer passes (mix dialyzer)

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Remove unsupported :timeout option from System.cmd

The new livebook test task crashes as soon as it tries to execute a code block because System.cmd/3 does not accept a :timeout option (on the project’s supported Elixir versions, including ~> 1.15). This raises ArgumentError before any pass/fail handling runs, so mix test.livebooks cannot validate even a single notebook.

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