🎨 Palette: Add help tooltips to financial parameters

.Jules/palette.md

@@ -0,0 +1,3 @@
+## 2024-05-18 - Tooltips for Financial Parameters
+**Learning:** Statistical and financial parameters like basis points or quantiles can be abstract to users. Adding concrete examples in tooltips makes the interface much more intuitive.
+**Action:** Always include concrete examples in 'help' tooltips for abstract inputs (e.g., "10 bps = 0.10%").

src/dashboard.py

@@ -185,12 +185,25 @@ def get_cache_key(*args) -> str:
         st.info("Using full-sample quantiles (exploratory mode)")
 
     vol_q_high = st.slider(
-        "High Volatility Quantile", 0.5, 0.95, DEFAULT_VOL_QUANTILE_HIGH, 0.05
+        "High Volatility Quantile",
+        0.5,
+        0.95,
+        DEFAULT_VOL_QUANTILE_HIGH,
+        0.05,
+        help="Threshold for top volatility regime (e.g., 0.80 = top 20% most volatile days).",
     )
 
     if mode == "Single-Asset":
         st.subheader("5. Backtest Settings")
-        bt_cost = st.number_input("Transaction Cost (bps)", value=DEFAULT_COST_BPS, step=1) / 10000
+        bt_cost = (
+            st.number_input(
+                "Transaction Cost (bps)",
+                value=DEFAULT_COST_BPS,
+                step=1,
+                help="Basis points per trade (e.g., 10 bps = 0.10%).",
+            )
+            / 10000
+        )
         allow_short = st.checkbox("Allow Short Selling?", value=False)
     else:
         st.subheader("5. Alert Thresholds")