feat(mq_editor): expose tracking params in UI with grouped param panel

Reorganize extraction parameters into four labeled groups (STFT / Peak
Detection / Tracking / Filter). Expose Birth, Death, Phase Wt and Min
Len as live controls wired to runExtraction(). All labels carry tooltip
descriptions. mq_extract.js now reads these from params instead of
hardcoded constants (same defaults preserved).

handoff(Claude): tracking params exposed, panel grouped, README updated.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 7 insertions, 8 deletions

diff --git a/tools/mq_editor/mq_extract.js b/tools/mq_editor/mq_extract.js
index c084b43..3f7490d 100644
--- a/tools/mq_editor/mq_extract.js
+++ b/tools/mq_editor/mq_extract.js
@@ -104,20 +104,19 @@ function normalizeAngle(angle) {
 
 // Track partials across frames using phase coherence for robust matching.
 function trackPartials(frames, params) {
-  const { sampleRate, hopSize } = params;
+  const {
+    sampleRate, hopSize,
+    birthPersistence = 3,
+    deathAge = 5,
+    minLength = 10,
+    phaseErrorWeight = 2.0
+  } = params;
   const partials        = [];
   const activePartials  = [];
   const candidates      = []; // pre-birth
 
   const trackingRatio   = 0.05; // 5% frequency tolerance
   const minTrackingHz   = 20;
-  const birthPersistence = 3;   // frames before partial is born
-  const deathAge        = 5;    // frames without match before death
-  const minLength       = 10;   // frames required to keep partial
-
-  // Weight phase error heavily in cost function, scaled by frequency.
-  // This makes phase deviation more significant for high-frequency partials.
-  const phaseErrorWeight = 2.0;
 
   for (const frame of frames) {
     const matched = new Set();