fix upgrade-all version change and path reporting

[CybotTM]

Summary

• capture each package manager, runtime, and uv tool version before running its updater
• report either old → new or version unchanged after a successful update command
• resolve executable locations from the real binary name (python3, node, go, ruby, rustc) instead of display labels such as Python and Node.js
• add regression coverage for changed versions, unchanged versions, real executable paths, and the runtime stage integration

Root cause

log_success_with_info used its display label as the argument to command -v, so labels such as Python, Node.js, and Rust always resolved to unknown. It also evaluated versions only after the updater returned, so the output could not say whether anything changed.

User impact

Successful make upgrade-all rows now make the outcome explicit, for example:

✓ Python (3.14.5 → 3.14.6 at /home/user/.local/bin/python3)
✓ Node.js (26.5.0 unchanged at /home/user/.nvm/versions/node/v26.5.0/bin/node)

Validation

• red/green regression cycle confirmed against the previous implementation
• uv run pytest -q — 747 passed, 1 skipped
• all repository pre-commit hooks pass for the changed files
• Bash syntax and ShellCheck pass

[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Scanned Files

None

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[CybotTM]

Independent focused review completed against main.

Initial review findings covered system package-manager reporting, uv package-to-binary mapping, authoritative uv package versions, unavailable-version handling, and pip interpreter/path consistency. All findings were addressed and re-reviewed. Final result: no Critical or Important blockers; ready to merge.

Final local validation: 7 focused regression tests pass, full suite 751 passed / 1 skipped, pre-commit hooks, Bash syntax, ShellCheck, and diff checks pass.

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