slice 5c ChartLab panel (ornith-35): candlestick/volume/EMA/RSI/relvol + P7 tooltips, trpc.market.candles+indicators wiring

Cross-review by qwopus35b pending. SPA lint 2/2 green.

app/src/lib/strings.ts

@@ -42,6 +42,32 @@ export const UI_STRINGS = {
   drawdownNote: "A default max-drawdown tolerance is set from your experience level (you can change it later).",
   completeOnboardingButton: "Finish setup",
   onboardingDone: "Setup complete — your starter watchlist is tracking.",
+  onboardingDone: "Setup complete — your starter watchlist is tracking.",
+
+  // Chart Lab (Slice 5c)
+  chartLabTitle: "Chart Lab — price, volume, and indicator overlays",
+  priceChartCaption:
+    "Daily price range (bar) with closing-price line — visual context, not a signal.",
+  volumeLabel: "Volume",
+  volumeCaption:
+    "Number of shares traded per day — relative size, not a directional cue.",
+  rsiLabel: "Relative Strength Index (RSI)",
+  rsiCaption:
+    "Momentum oscillator comparing gain and loss magnitude over a rolling window.",
+  rsiTooltip:
+    "RSI reads the speed and change of price movements; values near extremes can mark overextended stretches, but do not imply a direction.",
+  emaTooltip:
+    "Average price over the last N days — a smoothing filter that tracks the prevailing trend direction.",
+  ema9Label: "EMA 9",
+  ema21Label: "EMA 21",
+  ema50Label: "EMA 50",
+  ema200Label: "EMA 200",
+  relvolLabel: "Relative Volume",
+  relvolCaption:
+    "Today's volume compared to the rolling average — above typical or below typical.",
+  relvolTooltip:
+    "Relative volume shows whether trading activity is above or below the recent average; it does not predict direction.",
+  noCandleData: "No candle data available for this symbol/timeframe.",
 } as const;
 
 export const UI_STRING_LIST: string[] = Object.values(UI_STRINGS);