fix(kpi): line height 1.5 -> 1.15

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01JBHyvN2grYj27kTTRPYmBK

Author: htlin222

src/components/kpi-minter/styles.html

@@ -150,7 +150,7 @@
   .kpi-value {
     font-size: 24px;
     font-weight: 700;
-    line-height: 1.5;
+    line-height: 1.15;
     white-space: nowrap;
   }
 
@@ -162,7 +162,7 @@
   .kpi-label {
     margin-top: 4px;
     font-size: 11px;
-    line-height: 1.5;
+    line-height: 1.15;
     white-space: nowrap;
   }
 

src/util/kpi_minter.js

@@ -186,7 +186,7 @@ function insertKpiIntoSlide(payload) {
 		// then the whole row is centered across the page — NOT stretched to fill.
 		const valueSize = 38;
 		const labelSize = 17;
-		const lineSpacing = 150; // 1.5x line height
+		const lineSpacing = 115; // 1.15x line height
 		const padX = 22;
 		const padY = 16;
 		const margin = 30;