chore(v0.1): release 0.1.5

[github-actions]

🤖 I have created a release beep boop

0.1.5 (2026-05-27)

Features

• engine: expand engine builder error output (#661) (2c2c9ed)

Bug Fixes

• don't index build paths (#677) (fceb300)
• engine: add project stack lock (#654) (#658) (be334a6)
• engine: don't crash in EEx on hover (#668) (10fd27d)
• engine: resolve entity with correct arity in (h)eex (#665) (de85b6f)
• expert: use document from request as fallback when document is not in the store (#695) (2c66a26)
• forge: reset ASCII assumption on a new line (#688) (1b74973)

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