fix(rwallet): show all chains with activity, fix chain filter stats

- Backend: detect chains where Safe has transaction history even if
  current balance is zero (queries all-transactions?limit=1)
- Frontend: stats (Total Value, Tokens) now update when clicking
  chain filter buttons instead of always showing all-chain totals

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

modules/rwallet/components/folk-wallet-viewer.ts

@@ -3285,8 +3285,8 @@ class FolkWalletViewer extends HTMLElement {
 	private renderDashboard(): string {
 		if (!this.hasData()) return "";
 
-		// Aggregate stats across ALL chains (ignoring filter)
+		// Stats reflect current filter (all chains when no filter active)
-		const allBalances = this.getUnifiedBalances(true);
+		const allBalances = this.getUnifiedBalances();
 		const totalUSD = allBalances.reduce((sum, b) => sum + parseFloat(b.fiatBalance || "0"), 0);
 		const totalTokens = allBalances.filter((b) => {
 			const fiat = parseFloat(b.fiatBalance || "0");

modules/rwallet/mod.ts

@@ -702,6 +702,21 @@ routes.get("/api/safe/:address/all-balances", async (c) => {
 				if (chainBalances.length > 0) {
 					const enriched = await enrichWithPrices(chainBalances, chainId, { filterSpam: true });
 					results.push({ chainId, chainName: info.name, balances: enriched });
+				} else {
+					// Safe exists on this chain (API returned 200) but has zero balance.
+					// Check if there are any historical transactions (>$0 activity).
+					try {
+						const txRes = await fetch(
+							`${safeApiBase(info.prefix)}/safes/${address}/all-transactions/?limit=1&executed=true`,
+							{ signal: AbortSignal.timeout(5000) },
+						);
+						if (txRes.ok) {
+							const txData = await txRes.json() as { count?: number; results?: any[] };
+							if (txData.results && txData.results.length > 0) {
+								results.push({ chainId, chainName: info.name, balances: [] });
+							}
+						}
+					} catch {}
 				}
 			} catch {}
 		})