diff --git a/dashboard/src/workstreams.md b/dashboard/src/workstreams.md
index b564998..dc1b20c 100644
--- a/dashboard/src/workstreams.md
+++ b/dashboard/src/workstreams.md
@@ -158,11 +158,11 @@ function _warnLevel(name, val) {
 function _warnColor(lv) { return lv === 2 ? "#dc2626" : lv === 1 ? "#d97706" : "var(--theme-foreground-muted, #666)"; }
 
 const _whiMetrics = [
-  {name: "DD",   val: _DD,   fmt: v => v.toFixed(2)},
-  {name: "BR",   val: _BR,   fmt: v => (v*100).toFixed(0)+"%"},
-  {name: "SPR",  val: _SPR,  fmt: v => (v*100).toFixed(0)+"%"},
-  {name: "PEP",  val: _PEP,  fmt: v => (v*100).toFixed(0)+"%"},
-  {name: "CDDR", val: _CDDR, fmt: v => (v*100).toFixed(0)+"%"},
+  {name: "DD",   val: _DD,   fmt: v => v.toFixed(2),        tip: "Dependency Density — average number of dependencies per open workstream; high values indicate a tightly coupled graph that is hard to parallelise."},
+  {name: "BR",   val: _BR,   fmt: v => (v*100).toFixed(0)+"%", tip: "Blocked Ratio — share of open workstreams currently in a blocked state; directly reduces the work that can proceed right now."},
+  {name: "SPR",  val: _SPR,  fmt: v => (v*100).toFixed(0)+"%", tip: "Single-Point Risk — share of open workstreams that are depended on by others but have no incoming dependencies themselves; losing one stalls everything downstream."},
+  {name: "PEP",  val: _PEP,  fmt: v => (v*100).toFixed(0)+"%", tip: "Parallel Execution Potential — share of open workstreams with zero blocking dependencies that could start or continue immediately."},
+  {name: "CDDR", val: _CDDR, fmt: v => (v*100).toFixed(0)+"%", tip: "Cross-Domain Dependency Ratio — share of dependency edges that cross domain boundaries; high values mean progress in one domain is gated on another team or project."},
 ];
 
 const _whiBox = html`<div class="kpi-infobox whi-box">
@@ -179,7 +179,7 @@ const _whiBox = html`<div class="kpi-infobox whi-box">
         ${_whiMetrics.map(m => {
           const lv = _warnLevel(m.name, m.val);
           return html`<div class="whi-metric-row">
-            <span class="whi-metric-name" style="color:${_warnColor(lv)}">${m.name}</span>
+            <span class="whi-metric-name" style="color:${_warnColor(lv)}" title="${m.tip}">${m.name}</span>
             <span class="whi-metric-val"  style="color:${_warnColor(lv)}">${m.fmt(m.val)}</span>
           </div>`;
         })}
@@ -323,7 +323,7 @@ if (wsWithDeps.length === 0) {
 .whi-cycle-alert { background: #fef2f2; color: #dc2626; border-radius: 4px; padding: 0.2rem 0.45rem; font-size: 0.72rem; font-weight: 600; margin-bottom: 0.4rem; }
 .whi-metrics { border-top: 1px solid var(--theme-foreground-faint, #eee); padding-top: 0.35rem; margin-bottom: 0.35rem; }
 .whi-metric-row { display: flex; justify-content: space-between; padding: 0.16rem 0; }
-.whi-metric-name { font-family: monospace; font-size: 0.72rem; }
+.whi-metric-name { font-family: monospace; font-size: 0.72rem; text-decoration: underline dotted; text-underline-offset: 2px; cursor: help; }
 .whi-metric-val { font-variant-numeric: tabular-nums; font-weight: 600; font-size: 0.78rem; }
 .whi-domains { border-top: 1px solid var(--theme-foreground-faint, #eee); padding-top: 0.35rem; }
 .whi-domain-header { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--theme-foreground-faint, #aaa); margin-bottom: 0.2rem; }