Now I have a complete understanding of the file. I need to add three features:

1. Caustic Ridge Illumination - Highlight ridge pixels with bright white-gold (#FFE87C)
2. Record/Replay - Capture CCM history, parameters, and canvas frames at ~10fps with playback controls
3. Sonification - Web Audio API continuous tones based on CCM state with crossfades

Let me implement all three features:

Now I need to update the animation loop to add ridge highlighting and recording. Let me read the current rendering section:

Now I need to add ridge highlighting to the render loop. I also need to track which pixels are ridges to highlight them:

Now update the render loop to add ridge highlighting:

The screenshot shows an edit failed with "Failed to load response" error. The text attachment contains enhancement requirements for caustic ridge illumination, record/replay, and sonification. Looking at the current code, I can see it already has the recording and sonification infrastructure partially added. Let me read the rest of the file to see what state it's in and what needs to be completed:

Now I can see the full state. The code has the infrastructure for recording and sonification, but:

1. The UI controls for recording/replay/audio are missing from the footer
2. The frame recording isn't being called in the animation loop
3. The caustic ridge illumination isn't implemented
4. The alpha slider range (0.1-0.4) doesn't match the default value (1.5)
5. The sonification update isn't being called in the animation loop

Let me fix all these issues:

Now I have a complete view. I need to make several edits:

1. Add caustic ridge illumination (highlight pixels where |J| < tau with bright white-gold)
2. Add recording frame capture in the animation loop
3. Add sonification update in the animation loop
4. Fix alpha slider range
5. Add UI controls for recording/replay/audio in the footer

Let me make these edits:

The file keeps getting modified. Let me try a different approach - reading the full file and making all edits at once:

The file keeps getting modified. Let me check the current line numbers more precisely:

The search result was wrong (it found a comment). Let me search more specifically:

Something external keeps modifying the file. Let me check again and use a shorter unique string:

The file is being constantly modified. Let me try a different approach: