fix: address merged microflow review followups

[hjotha]

Summary

This PR collects follow-ups from reviews on already-merged microflow roundtrip PRs so the actionable feedback does not get lost.

Fixes:

• Stop manual while true detection from treating continue inside a nested loop as a continue for the outer loop.
• Mark add $Item to $List and remove $Item from $List target lists as list consumers so owner-both reverse retrieves keep the correct source form.
• Set nanoflow return-value render context on the direct describe nanoflow path so value-returning nanoflows do not emit bare return; for empty EndEvents.

Review follow-up coverage:

• Add writer coverage that commit actions always serialize default ErrorHandlingType.
• Fix the EndEvent empty-return writer test to exercise the actual empty string case.
• Add a negative regression assertion for non-empty change-object refresh inference.
• Add download-file formatter coverage for the no-browser flag case.
• Tighten reverse-association compact XPath name validation and make the owner-both condition explicit.
• Document MXCLI_EXEC_TIMEOUT in the quick reference.

Closes #404.
Closes #405.
Closes #406.

Tests

• make build
• make test
• make lint-go

[github-actions]

AI Code Review

Critical Issues

None found.

Moderate Issues

None found.

Minor Issues

• In mdl/executor/cmd_microflows_builder_control.go, the comment for containsContinueForCurrentLoop says it "mirrors containsBreakForCurrentLoop" but the implementation differs slightly (it returns early for LoopStmt/WhileStmt cases while the break version doesn't). This is actually correct behavior since continues in nested loops should not propagate outward, but the comment could be clearer about why the implementations differ.

What Looks Good

• The PR effectively addresses three specific bug fixes (Manual while-true detection over-triggers when continue lives only inside nested loop body #404, Reverse retrieve incorrectly classified when output feeds add/remove-from-list statements #405, describeNanoflow loses void-microflow EndEvent fix #406) with targeted changes:
  • Fixed manual while true detection to properly handle nested loop continues
  • Correctly marked list targets in add/remove operations as list consumers
  • Set proper render context for nanoflow descriptions to avoid bare return; statements
• Comprehensive test coverage added for all fixes:
  • New test files for the core issues (Manual while-true detection over-triggers when continue lives only inside nested loop body #404, Reverse retrieve incorrectly classified when output feeds add/remove-from-list statements #405)
  • Additional regression tests and edge case coverage
  • Clear test naming that references issue numbers
• Documentation update for MXCLI_EXEC_TIMEOUT is minimal and appropriate
• All changes follow existing patterns and maintain consistency with the codebase
• No MDL syntax changes were made, so full-stack consistency requirements don't apply
• The PR stays focused on a single concern: addressing review follow-ups from microflow roundtrip PRs

Recommendation

Approve. The PR correctly implements focused bug fixes with appropriate test coverage and documentation updates. The changes are minimal, targeted, and maintain code quality standards. Minor comment clarification suggested but not blocking.

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Automated review via OpenRouter (Nemotron Super 120B) — workflow source

[github-actions]

AI Code Review

Critical Issues

None found.

Moderate Issues

None found.

Minor Issues

None found.

What Looks Good

• The PR effectively addresses three specific microflow/nanoflow bugs (Manual while-true detection over-triggers when continue lives only inside nested loop body #404, Reverse retrieve incorrectly classified when output feeds add/remove-from-list statements #405, describeNanoflow loses void-microflow EndEvent fix #406) with targeted fixes
• Each fix includes corresponding regression test coverage to prevent future issues
• Additional test coverage improvements are made for commit actions, download-file formatting, and nanoflow return-value handling
• The documentation update for MXCLI_EXEC_TIMEOUT is clear and helpful
• Code changes are minimal, focused, and follow existing patterns
• Test files are properly formatted with SPDX license headers and descriptive comments
• No new MDL syntax is introduced, so full-stack consistency requirements don't apply
• The changes maintain backward compatibility and don't appear to introduce regressions

Recommendation

Approve. This PR consists of well-targeted bug fixes and test improvements for previously merged microflow/nanoflow functionality. Each change addresses a specific reported issue with appropriate test coverage, and the code quality is maintained throughout. As these are follow-ups to already-merged work and don't introduce new MDL syntax, they appropriately bypass the full-stack consistency requirements for new features while still maintaining the project's standards for bug fixes and test coverage.

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Automated review via OpenRouter (Nemotron Super 120B) — workflow source