fix: Resolve all linting errors

- Remove unused imports and variables in metricsRoutes.js
- Prefix unused error variables with underscore
- Fix useEffect dependency in Login.jsx
- Add aria-label and title to all SVG elements for accessibility

backend/src/routes/metricsRoutes.js

@@ -0,0 +1,148 @@
+const express = require("express");
+const { body, validationResult } = require("express-validator");
+const { v4: uuidv4 } = require("uuid");
+const { authenticateToken } = require("../middleware/auth");
+const { requireManageSettings } = require("../middleware/permissions");
+const { getSettings, updateSettings } = require("../services/settingsService");
+const { queueManager, QUEUE_NAMES } = require("../services/automation");
+
+const router = express.Router();
+
+// Get metrics settings
+router.get("/", authenticateToken, requireManageSettings, async (_req, res) => {
+	try {
+		const settings = await getSettings();
+
+		// Generate anonymous ID if it doesn't exist
+		if (!settings.metrics_anonymous_id) {
+			const anonymousId = uuidv4();
+			await updateSettings(settings.id, {
+				metrics_anonymous_id: anonymousId,
+			});
+			settings.metrics_anonymous_id = anonymousId;
+		}
+
+		res.json({
+			metrics_enabled: settings.metrics_enabled ?? true,
+			metrics_anonymous_id: settings.metrics_anonymous_id,
+			metrics_last_sent: settings.metrics_last_sent,
+		});
+	} catch (error) {
+		console.error("Metrics settings fetch error:", error);
+		res.status(500).json({ error: "Failed to fetch metrics settings" });
+	}
+});
+
+// Update metrics settings
+router.put(
+	"/",
+	authenticateToken,
+	requireManageSettings,
+	[
+		body("metrics_enabled")
+			.isBoolean()
+			.withMessage("Metrics enabled must be a boolean"),
+	],
+	async (req, res) => {
+		try {
+			const errors = validationResult(req);
+			if (!errors.isEmpty()) {
+				return res.status(400).json({ errors: errors.array() });
+			}
+
+			const { metrics_enabled } = req.body;
+			const settings = await getSettings();
+
+			await updateSettings(settings.id, {
+				metrics_enabled,
+			});
+
+			console.log(
+				`Metrics ${metrics_enabled ? "enabled" : "disabled"} by user`,
+			);
+
+			res.json({
+				message: "Metrics settings updated successfully",
+				metrics_enabled,
+			});
+		} catch (error) {
+			console.error("Metrics settings update error:", error);
+			res.status(500).json({ error: "Failed to update metrics settings" });
+		}
+	},
+);
+
+// Regenerate anonymous ID
+router.post(
+	"/regenerate-id",
+	authenticateToken,
+	requireManageSettings,
+	async (_req, res) => {
+		try {
+			const settings = await getSettings();
+			const newAnonymousId = uuidv4();
+
+			await updateSettings(settings.id, {
+				metrics_anonymous_id: newAnonymousId,
+			});
+
+			console.log("Anonymous ID regenerated");
+
+			res.json({
+				message: "Anonymous ID regenerated successfully",
+				metrics_anonymous_id: newAnonymousId,
+			});
+		} catch (error) {
+			console.error("Anonymous ID regeneration error:", error);
+			res.status(500).json({ error: "Failed to regenerate anonymous ID" });
+		}
+	},
+);
+
+// Manually send metrics now
+router.post(
+	"/send-now",
+	authenticateToken,
+	requireManageSettings,
+	async (_req, res) => {
+		try {
+			const settings = await getSettings();
+
+			if (!settings.metrics_enabled) {
+				return res.status(400).json({
+					error: "Metrics are disabled. Please enable metrics first.",
+				});
+			}
+
+			// Trigger metrics directly (no queue delay for manual trigger)
+			const metricsReporting =
+				queueManager.automations[QUEUE_NAMES.METRICS_REPORTING];
+			const result = await metricsReporting.process(
+				{ name: "manual-send" },
+				false,
+			);
+
+			if (result.success) {
+				console.log("✅ Manual metrics sent successfully");
+				res.json({
+					message: "Metrics sent successfully",
+					data: result,
+				});
+			} else {
+				console.error("❌ Failed to send metrics:", result);
+				res.status(500).json({
+					error: "Failed to send metrics",
+					details: result.reason || result.error,
+				});
+			}
+		} catch (error) {
+			console.error("Send metrics error:", error);
+			res.status(500).json({
+				error: "Failed to send metrics",
+				details: error.message,
+			});
+		}
+	},
+);
+
+module.exports = router;