Add instability numeric readout and column header tooltips

- Instability bar now taller (22px) with X/12 label centred inside it
- CSS: bar label positioned absolutely inside the wrap
- Tooltips on all column headers: AP, DR, Speed, Oxygen, Carry (armour);
  Qty, Rating, Value, Weight, State, Duration (drugs);
  Quantity, Weight, Carry, Value (items);
  Category, Rank, Bonus (skills);
  Damage, Ammo, Shots, Mode, Carry, Range (weapons)

css/mosh.css

@@ -2333,8 +2333,9 @@ p {
 
 /* ── Vevaphon Instability ─────────────────────────────────────── */
 .mosh .sla-instability-bar-wrap {
+  position: relative;
   margin-top: 10px;
-  height: 10px;
+  height: 22px;
   border-radius: 999px;
   overflow: hidden;
   background: rgba(17, 17, 17, 0.1);
@@ -2348,6 +2349,29 @@ p {
   transition: width 0.3s ease;
 }
 
+.mosh .sla-instability-bar-label {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-family: "Josefin Sans", "Roboto", sans-serif;
+  font-size: 0.72rem;
+  font-weight: 700;
+  letter-spacing: 0.06em;
+  pointer-events: none;
+  text-shadow: 0 1px 2px rgba(0,0,0,0.55);
+  color: #fff;
+}
+
+.mosh .sla-instability-bar-label.instability-critical {
+  color: #ffe0e0;
+  text-shadow: 0 1px 3px rgba(80,0,0,0.8);
+}
+
 .mosh .sla-instability-bar.instability-elevated {
   background: linear-gradient(90deg, rgba(203, 161, 68, 0.92), rgba(194, 112, 55, 0.96));
 }