Ableton Learning Synths: Filter resonance

Source snapshot

Vendored from Ableton's filter resonance lesson at learningsynths.ableton.com/en/filters/filter-resonance. The local route keeps the published lesson shell and XY filter runtime from shared scripts so the filter-curve scene boots from local assets.

• The archive preserves the published filter scene rather than rebuilding it in a custom control layer.
• The XY filter curve scene is treated as parity-critical because it is the clearest demonstration in the lesson.

Asset handoff

• shared/ableton-learning-synths-musiclab.js plus shared/ableton-learning-synths-archive.js drive the lesson shell and filter runtime.
• Route-local inventory matches the rest of the shipped Learning Synths batch: shared fonts, text payloads, RNBO patch data, and helper models.
• Assets such as content/assets/models/door-scene.glb and rnbo/patches/learning-synth.json stay on relative paths for subpath hosting.

Known deviations

• A shared footer carries the single original-page reference link; upstream lesson chrome is stripped from the public body.
• Ableton feedback, privacy, language-switch, analytics, and cookie surfaces are removed from the public route.
• Local chapter links are rewritten after mount so the shipped synth family stays internally navigable.

Validation guidance

• node tools/check-public-surface.mjs . keeps the public route footer-only.
• node tools/smoke-bundle.mjs . --group music (or --route ableton-learning-synths-filter-resonance) verifies local script loading, the filter-curve path and macro updates, and the active note state.
• Smoke asserts the expected local asset counts and keeps the no-remote-playable-media guard clean after lesson boot and interaction.