新增：射频性能阈值着色

src/web/www/overview.html

@@ -423,7 +423,12 @@
 .ov-perf-name {
     font-size: 12px;
     font-weight: 700;
-    letter-spacing: 0.4px;
+    /* UPPERCASE to match the chain's stage labels (INPUT/PROCESS/OUTPUT), which
+       are text-transform:uppercase. Owner consistency ruling 2026-08-17: every
+       card header in the signal chain reads uppercase, so this one does too.
+       Letter-spacing bumped to sit with the stage labels' 1.4px feel. */
+    letter-spacing: 1.2px;
+    text-transform: uppercase;
     color: var(--info-text);
     margin-bottom: 8px;
     padding-bottom: 6px;
@@ -439,6 +444,15 @@
 }
 .ov-perf-row .ov-perf-k { color: var(--text-muted); }
 .ov-perf-row .ov-perf-v { color: var(--text-primary); }
+/* Threshold colouring for the RF Performance values, matching the dashboard's
+   scheme (owner, 2026-08-17). Same tokens the dashboard uses (value-ok/warn/err/
+   off resolve to these), so a below-threshold reading turns the same colour here
+   as on the dashboard. Status is computed by the dashboard's OWN getSnrStatus/
+   getImdStatus (one source of truth), not re-thresholded here. */
+.ov-perf-row .ov-perf-v.ov-v-ok   { color: var(--accent-green); }
+.ov-perf-row .ov-perf-v.ov-v-warn { color: var(--status-warn); }
+.ov-perf-row .ov-perf-v.ov-v-err  { color: var(--status-err); }
+.ov-perf-row .ov-perf-v.ov-v-off  { color: var(--text-muted); }
 .ov-perf-foot {
     margin-top: auto;
     padding-top: 10px;
@@ -768,13 +782,24 @@ function fbArrow() {
    box's full width and can wrap without clipping. Values pass through exactly
    as parse() produced them, so 'N/A-FSSI' shows verbatim under FSSI Refresh. */
 function perfBox(snr, limd, uimd) {
+    /* Colour each value by the dashboard's OWN threshold functions (getSnrStatus:
+       >=27 ok / >=20 warn / else err; getImdStatus: >=47 ok / else err; 'N/A*' ->
+       off/grey). One source of truth shared with the dashboard, so the box and the
+       dashboard never disagree. The status maps to ov-v-* (same colours as the
+       dashboard's value-* tokens). SNR can go amber; the IMDs jump straight to red,
+       exactly as the dashboard treats them. */
+    var H = window.DashboardHelpers;
+    var vc = function(cls){ return 'ov-perf-v' + (cls ? ' ov-v-' + cls : ''); };
+    var snrC  = vc(H.getSnrStatus(snr));
+    var limdC = vc(H.getImdStatus(limd));
+    var uimdC = vc(H.getImdStatus(uimd));
     return '' +
         '<div class="ov-perf" onclick="window.location.href=\'sys_spectrum.html\'">' +
         '  <div class="ov-perf-name">RF Performance</div>' +
         '  <div class="ov-perf-caption">Sampled transmit signal</div>' +
-        '  <div class="ov-perf-row"><span class="ov-perf-k">SNR</span><span class="ov-perf-v">' + snr + ' dB</span></div>' +
+        '  <div class="ov-perf-row"><span class="ov-perf-k">SNR</span><span class="' + snrC + '">' + snr + ' dB</span></div>' +
-        '  <div class="ov-perf-row"><span class="ov-perf-k">LIMD</span><span class="ov-perf-v">' + limd + ' dBc</span></div>' +
+        '  <div class="ov-perf-row"><span class="ov-perf-k">LIMD</span><span class="' + limdC + '">' + limd + ' dBc</span></div>' +
-        '  <div class="ov-perf-row"><span class="ov-perf-k">UIMD</span><span class="ov-perf-v">' + uimd + ' dBc</span></div>' +
+        '  <div class="ov-perf-row"><span class="ov-perf-k">UIMD</span><span class="' + uimdC + '">' + uimd + ' dBc</span></div>' +
         '  <div class="ov-perf-foot">Details &rsaquo;</div>' +
         '</div>';
 }
@@ -861,9 +886,13 @@ window.Trends = (function () {
     /* Chart set per sub-mode. Order = display order. Duplicated from the 1.0
        verbatim per the owner's law (exciter 5 charts / translator 7). smod has
        only these two modes, so only these two are defined. */
+    /* Chart set per sub-mode. Order = display order. LIMD before UIMD (lower
+       intermodulation product first, then upper) — owner-ruled 2026-08-17. The
+       1.0 has these reversed (uimd, limd); that is logged as a cross-product fix,
+       NOT copied here. smod has only these two modes. */
     var CHARTS_FOR_MODE = {
-        exciter:    ['input_bitrate', 'snr', 'fwd_pct', 'uimd', 'limd'],
+        exciter:    ['input_bitrate', 'snr', 'fwd_pct', 'limd', 'uimd'],
-        translator: ['input_bitrate', 'rsnr', 'rssi', 'snr', 'fwd_pct', 'uimd', 'limd']
+        translator: ['input_bitrate', 'rsnr', 'rssi', 'snr', 'fwd_pct', 'limd', 'uimd']
     };
 
     var SPARK_W = 200, SPARK_H = 40, SPARK_PAD_Y = 2;

src/web/www/sys_spectrum.html

@@ -210,9 +210,28 @@
            negative). Verified: raw -22.7 -> -33.7 vs IMD 32.3/32.5; raw ~-63.4 -> -74.4
            vs IMD 73.6/73.9. */
         var IMD_PILOT_OFFSET = 11;  // dB; documented pilot offset (1.0 status_info_new.html)
-        setReadout('rd_shoulder', d.shoulder - IMD_PILOT_OFFSET, 1);
+        /* Threshold colouring for the three shoulder-suppression readouts, to match
-        setReadout('rd_limd', d.limd + IMD_PILOT_OFFSET, 1);
+           the dashboard's scheme (owner, 2026-08-17). The dashboard colours SNR/LIMD/
-        setReadout('rd_uimd', d.uimd + IMD_PILOT_OFFSET, 1);
+           UIMD via getSnrStatus/getImdStatus; SNR here is already coloured below
+           (line ~303). LIMD and UIMD use the dashboard's IMD rule directly: >= 47 dBc
+           green, else red (they already carry the +11 offset so they match the
+           dashboard values). Shoulder has NO pre-existing threshold anywhere; owner
+           ruled it uses the SAME 47 dBc line as the IMDs on its ABSOLUTE value (it is
+           the same kind of dBc shoulder-suppression measure, only signed negative). All
+           OTHER spectrum readouts (FSSI, Pilot, Peak, RBW, ...) stay plain — no invented
+           thresholds. A '--'/NaN reading clears the colour (stays default), never red. */
+        function imdColour(v){                     // dBc magnitude vs the 47 dBc pass line
+            return (v === null) ? '' : (Math.abs(v) >= 47 ? 'var(--accent-green)' : 'var(--status-err)');
+        }
+        var shoulderVal = setReadout('rd_shoulder', d.shoulder - IMD_PILOT_OFFSET, 1);
+        var limdVal     = setReadout('rd_limd', d.limd + IMD_PILOT_OFFSET, 1);
+        var uimdVal     = setReadout('rd_uimd', d.uimd + IMD_PILOT_OFFSET, 1);
+        var shoulderEl = document.getElementById('rd_shoulder');
+        var limdEl     = document.getElementById('rd_limd');
+        var uimdEl     = document.getElementById('rd_uimd');
+        if (shoulderEl) shoulderEl.style.color = imdColour(shoulderVal);
+        if (limdEl)     limdEl.style.color     = imdColour(limdVal);
+        if (uimdEl)     uimdEl.style.color     = imdColour(uimdVal);
         setReadout('rd_pilot', d.pilot, 4);
         setReadout('rd_peak', d.peak, 1);
         setReadout('rd_rbw', d.rbw_khz, 2);