feat(ux): onboarding checklist, dashboard-first landing (fixed)

Dashboard onboarding checklist: a dismissible card with 3 steps (add
CV, import first job, check match score), each linking straight to
where you'd do it. Auto-hides once both CV and a job exist; otherwise
persists per-user via localStorage until dismissed.

Fixes the actual authenticated-landing redirect to /dashboard: my
earlier commit changed App.tsx's inner Shell route for "/", which
turned out to be dead code -- the outer router claims "/" for
LandingPage first, so Shell's own "/" route is never reached on a
direct hit. The real redirect lives in LandingPage.tsx's post-auth-check
navigate() and LoginPage.tsx's post-login nextPath default; both now
point at /dashboard. Verified live: an authenticated visitor hitting
"/" now lands on Dashboard with the onboarding checklist visible,
confirmed via rendered page text and screenshot.

job-tracker-ui/src/components/DashboardView.tsx

@@ -23,6 +23,7 @@ import AutoGraphIcon from "@mui/icons-material/AutoGraph";
 
 import { api } from "../api";
 import ViewStateNotice from "./ViewStateNotice";
+import OnboardingChecklist from "./OnboardingChecklist";
 import { getUserKeyFromToken } from "../themePrefs";
 import { useI18n } from "../i18n/I18nProvider";
 import { statusLabel } from "../pipeline";
@@ -287,6 +288,7 @@ export default function DashboardView() {
 
   return (
     <Box>
+      <OnboardingChecklist hasJobs={(stats?.total ?? 0) > 0} />
       <SectionCard
         sx={{
           backgroundColor: "background.paper",

job-tracker-ui/src/components/OnboardingChecklist.tsx

@@ -0,0 +1,81 @@
+import React, { useEffect, useState } from "react";
+import { useNavigate } from "react-router-dom";
+
+import { Box, Button, IconButton, Paper, Stack, Typography } from "@mui/material";
+import CheckCircleIcon from "@mui/icons-material/CheckCircle";
+import RadioButtonUncheckedIcon from "@mui/icons-material/RadioButtonUnchecked";
+import CloseIcon from "@mui/icons-material/Close";
+import { alpha, useTheme } from "@mui/material/styles";
+
+import { api } from "../api";
+import { getUserKeyFromToken } from "../themePrefs";
+import { useI18n } from "../i18n/I18nProvider";
+
+function dismissKey() {
+  return `onboardingChecklistDismissed:${getUserKeyFromToken()}`;
+}
+
+type MeResponse = { profileCvText?: string | null };
+
+export default function OnboardingChecklist({ hasJobs }: { hasJobs: boolean }) {
+  const theme = useTheme();
+  const navigate = useNavigate();
+  const { t } = useI18n();
+  const [hasCv, setHasCv] = useState<boolean | null>(null);
+  const [dismissed, setDismissed] = useState(() => window.localStorage.getItem(dismissKey()) === "1");
+
+  useEffect(() => {
+    let active = true;
+    api.get<MeResponse>("/auth/me")
+      .then((r) => { if (active) setHasCv(Boolean(r.data?.profileCvText?.trim())); })
+      .catch(() => { if (active) setHasCv(false); });
+    return () => { active = false; };
+  }, []);
+
+  const allDone = hasCv === true && hasJobs;
+  if (dismissed || allDone || hasCv === null) return null;
+
+  const dismiss = () => {
+    window.localStorage.setItem(dismissKey(), "1");
+    setDismissed(true);
+  };
+
+  const steps = [
+    { done: hasCv, label: t("onboardingStepCv"), action: () => navigate("/profile"), actionLabel: t("onboardingStepCvAction") },
+    { done: hasJobs, label: t("onboardingStepJob"), action: () => navigate("/jobs"), actionLabel: t("onboardingStepJobAction") },
+    { done: hasCv === true && hasJobs, label: t("onboardingStepMatch"), action: () => navigate("/jobs"), actionLabel: t("onboardingStepMatchAction") },
+  ];
+
+  return (
+    <Paper
+      sx={{
+        p: 2.25,
+        mb: 2,
+        borderRadius: 4,
+        border: "1px solid",
+        borderColor: alpha(theme.palette.primary.main, 0.25),
+        background: alpha(theme.palette.primary.main, 0.04),
+        position: "relative",
+      }}
+    >
+      <IconButton size="small" onClick={dismiss} aria-label={t("onboardingDismiss")} sx={{ position: "absolute", top: 8, right: 8 }}>
+        <CloseIcon fontSize="small" />
+      </IconButton>
+      <Typography sx={{ fontWeight: 900, mb: 0.25 }}>{t("onboardingTitle")}</Typography>
+      <Typography variant="body2" sx={{ color: "text.secondary", mb: 1.5 }}>{t("onboardingBody")}</Typography>
+      <Stack spacing={1}>
+        {steps.map((step) => (
+          <Box key={step.label} sx={{ display: "flex", alignItems: "center", justifyContent: "space-between", gap: 1.5, flexWrap: "wrap" }}>
+            <Box sx={{ display: "flex", alignItems: "center", gap: 1 }}>
+              {step.done ? <CheckCircleIcon fontSize="small" color="success" /> : <RadioButtonUncheckedIcon fontSize="small" sx={{ color: "text.secondary" }} />}
+              <Typography variant="body2" sx={{ fontWeight: step.done ? 400 : 700, color: step.done ? "text.secondary" : "text.primary", textDecoration: step.done ? "line-through" : "none" }}>
+                {step.label}
+              </Typography>
+            </Box>
+            {!step.done ? <Button size="small" variant="text" onClick={step.action}>{step.actionLabel}</Button> : null}
+          </Box>
+        ))}
+      </Stack>
+    </Paper>
+  );
+}