SERUM ANALYSIS + LEMON WAVE UPGRADE - 3 November 2026

Installed product: dedicated instrument UI, eight-preset selector, phase/random,
reference unison blend, two simultaneous modulation routes, three new presets.
The interface is Lemon Wave's own design; it is not a copied Serum skin.

This REA session added 48 address-indexed decompilation observations.
The combined index covers 131 unique function addresses across retained
batches. Counts are observations/addresses, NOT recovered features or parity tests.
Target: installed Windows Serum 2.1.5 VST3, SHA256
33369e196ae66d05d20485f3c5e800707dc34a5ad89c27959250d60387b2ea55.

READING ORDER
PLAN.txt: bounded upgrade plan and remaining full-instrument scope.
finding-ledger.json: ten concrete conclusions, evidence IDs and caveats.
function-index.json: this batch grouped by subsystem, with call candidates.
all-functions-index.json: cross-batch index; batch paths refer to project
rea-setup-work folders and earlier Desktop research deliveries.
pseudocode/: static decompiler observations, not original source.
evidence-final.json: complete exported REA evidence. close.json: lifecycle result.

IMPLEMENTATION / EVIDENCE BOUNDARY
The installed phase amount and reference blend reuse earlier measured laws.
The random sequence, two-route matrix, UI and preset workflow are Lemon Wave
implementation choices. Current envelope/filter/effect engines remain unchanged.
The new envelope/filter/effect decompilations establish paths to reconstruct next;
they do not establish complete waveform or timing agreement with Serum.
No new Serum runtime render was claimed in this static-analysis batch.
The existing waveform reference tests still pass, alongside new real-plugin tests.

CHECKLIST
- Review existing evidence / preserve sound: complete for this upgrade.
- Dedicated visual layout and playable controls: implemented and installed.
- State/MIDI/regression/offline stress checks: passed; user live review remains.
- Envelope/filter/modulation/effects tracing: expanded, partially answered.
- Full Serum reconstruction: unresolved; next gate is controlled envelope renders
  across durations, curvature, hold, retrigger and release, then verified replacement.
- Remaining full wavetable editor / extra oscillator engines / complete effects,
  modulation and asset compatibility: not completed by this upgrade.
