From c0a0904a4442a2d12b875aa02640d13c20bf3791 Mon Sep 17 00:00:00 2001
From: jess <jess@else-if.org>
Date: Thu, 2 Apr 2026 19:34:58 -0700
Subject: [PATCH] display computed pH in status when LSV sweep completes

---
 cue-ios/CueIOS/AppState.swift |  9 ++++++++-
 cue/src/app.rs                | 11 ++++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/cue-ios/CueIOS/AppState.swift b/cue-ios/CueIOS/AppState.swift
index b8f88aa..831d9f2 100644
--- a/cue-ios/CueIOS/AppState.swift
+++ b/cue-ios/CueIOS/AppState.swift
@@ -174,7 +174,14 @@ final class AppState {
             if !lsvManualPeaks {
                 lsvPeaks = detectLsvPeaks(lsvPoints)
             }
-            status = "LSV complete: \(lsvPoints.count) points"
+            var st = "LSV complete: \(lsvPoints.count) points"
+            if let s = phSlope, let o = phOffset, abs(s) > 1e-6 {
+                if let peak = detectQhqPeak(lsvPoints) {
+                    let ph = (Double(peak) - o) / s
+                    st += String(format: "  |  pH=%.2f", ph)
+                }
+            }
+            status = st
 
         case .ampStart(let vHold):
             ampPoints.removeAll()
diff --git a/cue/src/app.rs b/cue/src/app.rs
index e0e0caa..cce961a 100644
--- a/cue/src/app.rs
+++ b/cue/src/app.rs
@@ -660,7 +660,16 @@ impl App {
                     if !self.lsv_manual_peaks {
                         self.lsv_peaks = crate::lsv_analysis::detect_peaks(&self.lsv_points);
                     }
-                    self.status = format!("LSV complete: {} points", self.lsv_points.len());
+                    let mut st = format!("LSV complete: {} points", self.lsv_points.len());
+                    if let (Some(s), Some(o)) = (self.ph_slope, self.ph_offset) {
+                        if let Some(peak) = crate::lsv_analysis::detect_qhq_peak(&self.lsv_points) {
+                            if s.abs() > 1e-6 {
+                                let ph = (peak - o) / s;
+                                write!(st, "  |  pH={:.2}", ph).ok();
+                            }
+                        }
+                    }
+                    self.status = st;
                 }
                 EisMessage::AmpStart { v_hold } => {
                     self.amp_points.clear();