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);

app/src/lib/trpc.ts

@@ -67,8 +67,25 @@ export type Complexity = "beginner" | "intermediate" | "advanced";
 export interface StarterEntry { symbol: string; tickerKind: string; reason: string; }
 export interface PortfolioEntry { symbol: string; qty: number; avgCost: number; acquiredAt: string; }
 
+export interface IndicatorOptions {
+  ema?: number[];
+  rsi?: { period?: number };
+  relvol?: { period?: number };
+}
+export interface IndicatorResult {
+  ema?: Record<number, Array<{ ts: string; value: number }>>;
+  rsi?: Array<{ ts: string; value: number }>;
+  relvol?: Array<{ ts: string; value: number }>;
+}
+
 export const api = {
-  market: { snapshot: (symbol: string) => trpcQuery<Snapshot>("market.snapshot", { symbol }) },
+  market: {
+    snapshot: (symbol: string) => trpcQuery<Snapshot>("market.snapshot", { symbol }),
+    candles: (symbol: string, timeframe = "1d") =>
+      trpcQuery<PriceCandle[]>("market.candles", { symbol, timeframe }),
+    indicators: (symbol: string, opts: IndicatorOptions) =>
+      trpcQuery<IndicatorResult>("market.indicators", { symbol, ...opts }),
+  },
   auth: {
     signup: (email: string, password: string) => trpcMutate<{ userId: string }>("auth.signup", { email, password }),
     login: (email: string, password: string, totp?: string) => trpcMutate<{ userId: string }>("auth.login", { email, password, ...(totp ? { totp } : {}) }),