feat(33-04): add community price service, API routes, and setup currency metadata

- Create community-price.service.ts with ownership validation, upsert, median aggregation
- Create community-prices route (GET stats public, POST requires auth + ownership)
- Register community-prices route with public GET access
- Add priceCurrency to both getSetupWithItems and getSetupWithItemsById
- Aggregation uses PERCENTILE_CONT(0.5) with 3-report minimum threshold

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/server/index.ts

@@ -14,6 +14,7 @@ import { createRateLimit } from "./middleware/rateLimit.ts";
 import { accountRoutes } from "./routes/account.ts";
 import { authRoutes } from "./routes/auth.ts";
 import { categoryRoutes } from "./routes/categories.ts";
+import { communityPriceRoutes } from "./routes/community-prices.ts";
 import { discoveryRoutes } from "./routes/discovery.ts";
 import { exchangeRateRoutes } from "./routes/exchange-rates.ts";
 import { globalItemRoutes } from "./routes/global-items.ts";
@@ -219,6 +220,9 @@ app.use("/api/*", async (c, next) => {
 	// Skip public market prices read endpoint (GET /api/market-prices)
 	if (c.req.path.startsWith("/api/market-prices") && c.req.method === "GET")
 		return next();
+	// Skip public community prices read endpoint (GET /api/community-prices)
+	if (c.req.path.startsWith("/api/community-prices") && c.req.method === "GET")
+		return next();
 	// All other methods require auth for userId resolution
 	return requireAuth(c, next);
 });
@@ -240,6 +244,7 @@ app.route("/api/onboarding", onboardingRoutes);
 app.route("/api/tags", tagRoutes);
 app.route("/api/exchange-rates", exchangeRateRoutes);
 app.route("/api/market-prices", marketPriceRoutes);
+app.route("/api/community-prices", communityPriceRoutes);
 
 // MCP server (conditionally mounted)
 if (process.env.GEARBOX_MCP !== "false") {