v3.4.2 — pick your H3 steps + community fix wave

Same-day follow-up to v3.4.1.

New

• H3 Steps control — pills on the H3 tier strip: Auto / 12 / 16 / 20. Auto keeps each tier's tuned 9-step point; 20 is the official reference recipe (~2.4× render time). Requested by @ivanfioravanti.

Fixed (all from user reports — thank you)

• LoRA strength value clipped behind the number spinner (#45)
• M1/M2: Metal-watchdog kill during Gemma prompt encoding now auto-retries once with a 256-token window instead of failing the render (#44)
• Extend consumed the 720p export instead of the native render, and the downscaler squashed aspect by up to 3.85% (#48)
• Model integrity is now placement-aware: right-content-wrong-place weights that shadow the real file are reported with both paths (#36)
• Train preflight downloaded the quantized dev transformer and green-lit it — the exact file that trains a dead LoRA. Now fetches the full-precision Q8 copy and size-gates the check (#35)
• LTX + H3 venvs self-heal when Pinokio's shared uv Python gets pruned (the "installed another pack and H3 vanished" class)

Update via Pinokio — installs pick this up from main automatically.