chore(main): release 1.660.0

[rubenfiszel]

🤖 I have created a release beep boop

1.660.0 (2026-03-18)

Features

• cli: use local scripts when previewing flows (#8365) (435de95)

Bug Fixes

• exclude wm_deployers group from CE group limit check (#8429) (9a6ce44)

Performance Improvements

• cache composer vendor dir to skip reinstall on repeated php executions (#8330) (66a8e84)

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[claude]

Claude finished @rubenfiszel's task in 44s —— View job

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Review: Release PR 1.659.2

• Review changed files
• Provide feedback

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This is an automated Release Please PR. Changes are minimal and correct:

1. CHANGELOG.md — Adds a new 1.659.2 section with one entry: the PHP composer vendor dir caching perf improvement (#8330). Format and links look good.
2. version.txt — Bumps 1.659.1 → 1.659.2. Correct.

No issues found. LGTM — safe to merge.

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How to verify: After merging this PR, confirm that version.txt at the tip of main reads 1.659.2 and the changelog entry for 1.659.2 appears at the top of CHANGELOG.md. No app-facing UI changes are introduced by this PR itself; the underlying perf improvement (PHP composer caching) was already merged in #8330 — to verify that, run a PHP script in Windmill twice and observe that the second execution skips the composer install step (faster cold start).