O-simpleWavetable v1.0.1

Maintenance release from a full code review (DSP core, processor / state, editor /
page). No parameter, range, preset or state-format change: v1.0.0 sessions and
presets load unchanged.

Fixed

• Mono retrigger from a release tail could re-attack from silence. A deferred
  ADSR change was applied before noteOn(); juce::ADSR::setParameters in the
  release state with sustain 0 resets the envelope to idle, so a note played into a
  plucky tail after an envelope knob had moved stepped to 0 in one sample. The same
  path reset the mod envelope (default sustain 0) and restarted the position
  contour. Root cause: call order in WtVoice::noteOnDirect / startNote; the
  deferred parameters now apply after noteOn(), where the attack state never resets.
• A repeated note-off lengthened the release. juce::ADSR::noteOff recomputes
  the release rate from the current level, so overlapping same-pitch notes (a second
  note-off while already releasing) restarted the ramp, up to 2x the set time. The
  voice now ignores a note-off while releasing, and Mono releases only on the
  held-stack's non-empty-to-empty transition.
• Mono cut CC123 All Notes Off in 2 ms where Poly rang out. Both modes now treat
  CC120 / CC123 as a release (JUCE's Poly mapping), so a transport stop sounds the
  same in both.
• Import error status race. A superseded worker's error could overwrite the newer
  job's "busy" (the stale check ran outside the lock). Worker-side status writes are
  now generation-checked under the lock.
• Editor closed mid-drag left a host gesture open on the 13 slider parameters
  (~WebSliderParameterAttachment does not end it). The editor now tracks every
  gesture and ends any still open in its destructor; the stepped knobs already did.
• Saving a preset under a case-variant of an existing name overwrote the file but
  recorded the typed spelling, leaving the panel on a greyed name with Delete
  disabled. A confirmed replace saves under the existing stem.
• Drop-target ring blinked off while a file was dragged across the page
  (dragover never re-asserted hover after an inner dragleave).
• Forward compatibility of session restore. A parameter absent from an incoming
  state now restores to its default instead of the instance's live value (APVTS
  fills a missing child from the current value). Matters for the first parameter
  added after 1.0.
• Page: a clicked knob now takes keyboard focus (arrow keys work after a click); a
  note held by both a computer key and the mouse no longer cuts off when one is
  released; an arrow key during a stepped-knob drag no longer nests a gesture.

Changed (internal, no behaviour change)

• Removed the never-adopted two-pole position-smoother scaffolding, the unused
  velocity side of the mono note stack, four unused voice test getters, three unused
  LFO getters, six unused display getters, an unused crossfade argument, a redundant
  block-context seed and the 3-argument voice prepareToPlay (moved to the test rig).
• The 21 named raw-parameter pointers are one array indexed by ParamIDs::Slot;
  isPresetOutputSlot is a constexpr index compare; the restore path's three
  "empty Imported" branches share one helper; WtSynthesiser::findVoiceToSteal
  iterates voices directly (no per-voice lock).
• Page: the knob ring is a repeating-conic-gradient; one capturePointer helper
  replaces three copies of the pointer-capture lifecycle; one bindSegments serves
  toggles and choice rows; one paintKnob serves both knob kinds; a dead flat-array
  thumbnail fallback and ten no-op try / catch wrappers are gone.

Testing

• Debug gate tree, 0 warnings: bank-check 14 / 14, dsp-check ALL PASS
  (--alloc-check 0 allocations), mod-check 19 / 19, import-check 34 / 34
  (G-REAP-SOAK 44 reaped), state-check 12 / 12, viz-check 88 / 88.
• UI: check-i18n ALL PASS, check-ui-labels ALL PASS, boot-all-uis 0 DEAD / 0 late,
  G-S3W3-WHEEL 6 / 6 (the shared pointer helper keeps N8 / N13 exact).
• Installed VST3 (pedalboard): see the review addendum in CODE_REVIEW.md.