fix(deps): update nextjs monorepo to v16.0.10

Adds a production-ready Dockerfile and .dockerignore, and updates Next.js config to produce a standalone output.

Provides a multi-stage build that installs dependencies (yarn/npm/pnpm supported), runs the Next.js build, and assembles a slim runtime image on Node Alpine. Configures a non-root runtime user, exposes PORT 3000, and includes runtime utilities and compatibility packages to ensure reliable container execution. These changes enable consistent, smaller production container images and simplified deployment.

.dockerignore

@@ -0,0 +1,7 @@
+Dockerfile
+.dockerignore
+node_modules
+npm-debug.log
+README.md
+.next
+.git

Dockerfile

@@ -0,0 +1,69 @@
+# syntax=docker.io/docker/dockerfile:1@sha256:b6afd42430b15f2d2a4c5a02b919e98a525b785b1aaff16747d2f623364e39b6
+
+FROM node:24-alpine@sha256:7e0bd0460b26eb3854ea5b99b887a6a14d665d14cae694b78ae2936d14b2befb AS base
+
+# Install dependencies only when needed
+FROM base AS deps
+# Check https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine to understand why libc6-compat might be needed.
+RUN apk add --no-cache libc6-compat
+WORKDIR /app
+
+# Install dependencies based on the preferred package manager
+COPY package.json yarn.lock* package-lock.json* pnpm-lock.yaml* .npmrc* ./
+RUN \
+  if [ -f yarn.lock ]; then yarn --frozen-lockfile; \
+  elif [ -f package-lock.json ]; then npm ci; \
+  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm i --frozen-lockfile; \
+  else echo "Lockfile not found." && exit 1; \
+  fi
+
+
+# Rebuild the source code only when needed
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
+COPY . .
+
+# Next.js collects completely anonymous telemetry data about general usage.
+# Learn more here: https://nextjs.org/telemetry
+# Uncomment the following line in case you want to disable telemetry during the build.
+# ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN \
+  if [ -f yarn.lock ]; then yarn run build; \
+  elif [ -f package-lock.json ]; then npm run build; \
+  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm run build; \
+  else echo "Lockfile not found." && exit 1; \
+  fi
+
+# Production image, copy all the files and run next
+FROM base AS runner
+# wget needed for healthcheck
+RUN apk add --no-cache wget 
+WORKDIR /app
+
+ENV NODE_ENV=production
+# Uncomment the following line in case you want to disable telemetry during runtime.
+# ENV NEXT_TELEMETRY_DISABLED=1
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
+
+# Copy public files. "[c]" as workaround for conditional matching since the folder might not exist.
+COPY --from=builder /app/publi[c] ./public
+
+# Automatically leverage output traces to reduce image size
+# https://nextjs.org/docs/advanced-features/output-file-tracing
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+
+EXPOSE 3000
+
+ENV PORT=3000
+
+# server.js is created by next build from the standalone output
+# https://nextjs.org/docs/pages/api-reference/config/next-config-js/output
+ENV HOSTNAME="0.0.0.0"
+CMD ["node", "server.js"]

next.config.ts

@@ -5,6 +5,8 @@
 import './src/env.ts';
 
 /** @type {import("next").NextConfig} */
-const config = {};
+const config = {
+  output: 'standalone',
+};
 
 export default config;

package.json

@@ -33,44 +33,44 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cssnano": "^7.1.2",
-    "lucide-react": "^0.556.0",
-    "next": "16.0.7",
+    "lucide-react": "^0.561.0",
+    "next": "16.0.10",
     "next-plausible": "^3.12.4",
-    "react": "19.2.1",
-    "react-dom": "19.2.1",
+    "react": "19.2.3",
+    "react-dom": "19.2.3",
     "react-hook-form": "^7.56.1",
     "recharts": "^2.15.3",
     "tailwind-merge": "^3.2.0",
     "zod": "^4.0.0"
   },
   "devDependencies": {
-    "@playwright/test": "^1.57.0",
-    "@tailwindcss/postcss": "4.1.17",
-    "@testing-library/dom": "^10.4.1",
-    "@testing-library/jest-dom": "^6.9.1",
-    "@testing-library/react": "^16.3.0",
-    "@testing-library/user-event": "^14.6.1",
-    "@types/node": "24.10.1",
+    "@playwright/test": "1.57.0",
+    "@tailwindcss/postcss": "4.1.18",
+    "@testing-library/dom": "10.4.1",
+    "@testing-library/jest-dom": "6.9.1",
+    "@testing-library/react": "16.3.0",
+    "@testing-library/user-event": "14.6.1",
+    "@types/node": "24.10.3",
     "@types/react": "19.2.7",
     "@types/react-dom": "19.2.3",
-    "@vitejs/plugin-react": "^5.1.1",
-    "eslint": "9.39.1",
-    "eslint-config-next": "16.0.7",
+    "@vitejs/plugin-react": "5.1.2",
+    "eslint": "9.39.2",
+    "eslint-config-next": "16.0.10",
     "eslint-config-prettier": "10.1.8",
-    "jsdom": "^27.2.0",
+    "jsdom": "27.3.0",
     "postcss": "8.5.6",
     "prettier": "3.7.4",
     "prettier-plugin-tailwindcss": "0.7.2",
-    "tailwindcss": "4.1.17",
+    "tailwindcss": "4.1.18",
     "tw-animate-css": "1.4.0",
     "typescript": "5.9.3",
-    "typescript-eslint": "8.48.1",
-    "vitest": "^4.0.13"
+    "typescript-eslint": "8.49.0",
+    "vitest": "4.0.15"
   },
   "ct3aMetadata": {
     "initVersion": "7.39.3"
   },
-  "packageManager": "pnpm@10.24.0",
+  "packageManager": "pnpm@10.25.0",
   "pnpm": {
     "overrides": {
       "@types/react": "19.2.7",

src/app/components/FireCalculatorForm.tsx

@@ -333,9 +333,18 @@ export default function FireCalculatorForm({
       // Sort to find percentiles
       balancesForYear.sort((a, b) => a - b);
 
-      const p10 = balancesForYear[Math.floor(numSimulations * 0.4)];
-      const p50 = balancesForYear[Math.floor(numSimulations * 0.5)];
-      const p90 = balancesForYear[Math.floor(numSimulations * 0.6)];
+      const pickPercentile = (fraction: number) => {
+        const clampedIndex = Math.min(
+          balancesForYear.length - 1,
+          Math.max(0, Math.floor((balancesForYear.length - 1) * fraction)),
+        );
+        return balancesForYear[clampedIndex];
+      };
+
+      // For Monte Carlo, we present a narrow middle band (40th-60th) to show typical outcomes
+      const p10 = pickPercentile(0.4);
+      const p50 = pickPercentile(0.5);
+      const p90 = pickPercentile(0.6);
 
       // Calculate other metrics (using deterministic logic for "untouched" etc for simplicity, or p50)
       // We need to reconstruct the "standard" fields for compatibility with the chart
@@ -437,13 +446,23 @@ export default function FireCalculatorForm({
     });
   };
 
-  const isMonteCarlo = form.watch('simulationMode') === 'monte-carlo';
+  const simulationModeValue = form.watch('simulationMode');
+  const isMonteCarlo = simulationModeValue === 'monte-carlo';
   const chartData =
     result?.yearlyData.map((row) => ({
       ...row,
       mcRange: (row.balanceP90 ?? 0) - (row.balanceP10 ?? 0),
     })) ?? [];
 
+  // Ensure we always have a fresh calculation when switching simulation modes (or on first render)
+  useEffect(() => {
+    if (!result) {
+      // eslint-disable-next-line @typescript-eslint/no-floating-promises
+      form.handleSubmit(onSubmit)();
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [simulationModeValue]);
+
   const projectionChartConfig: ChartConfig = {
     year: {
       label: 'Year',

src/app/components/__tests__/FireCalculatorForm.test.tsx

@@ -126,7 +126,7 @@ describe('FireCalculatorForm', () => {
     await screen.findByText('Financial Projection');
     const bandLegend = await screen.findByTestId('mc-band-legend');
 
-    expect(bandLegend).toHaveTextContent('10th-90th percentile');
+    expect(bandLegend).toHaveTextContent('40th-60th percentile');
   });
 
   it('handles withdrawal strategy selection', async () => {

src/app/learn/coast-fire-vs-lean-fire/page.tsx

@@ -5,6 +5,7 @@ import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
 import { CoastFireChart } from '@/app/components/charts/CoastFireChart';
 import { AuthorBio } from '@/app/components/AuthorBio';
 import { FaqSection, type FaqItem } from '@/app/components/FaqSection';
+import type { Metadata } from 'next';
 
 const faqs: FaqItem[] = [
   {
@@ -39,16 +40,28 @@ const faqs: FaqItem[] = [
   },
 ];
 
-export const metadata = {
+export const metadata: Metadata = {
   title: `Coast FIRE vs. Lean FIRE: Which Strategy Is Right For You? (${new Date().getFullYear().toString()})`,
   description:
     'Compare Coast FIRE (front-loading savings) with Lean FIRE (minimalist living). See the math, pros, cons, and find your path to freedom.',
+  alternates: {
+    canonical: 'https://investingfire.com/learn/coast-fire-vs-lean-fire',
+  },
   openGraph: {
     title: 'Coast FIRE vs. Lean FIRE: The Ultimate Comparison',
     description:
       "Don't just retire early—retire smarter. We break down the two most popular alternative FIRE strategies.",
     type: 'article',
+    siteName: 'InvestingFIRE',
     url: 'https://investingfire.com/learn/coast-fire-vs-lean-fire',
+    images: [
+      {
+        url: 'https://investingfire.com/apple-icon.png',
+        width: 180,
+        height: 180,
+        alt: 'InvestingFIRE Logo',
+      },
+    ],
   },
 };
 

src/app/learn/home-bias-in-investing/page.tsx

@@ -4,6 +4,7 @@ import { Button } from '@/components/ui/button';
 import { Info } from 'lucide-react';
 import { AuthorBio } from '@/app/components/AuthorBio';
 import { FaqSection, type FaqItem } from '@/app/components/FaqSection';
+import type { Metadata } from 'next';
 
 const faqs: FaqItem[] = [
   {
@@ -33,15 +34,27 @@ const faqs: FaqItem[] = [
   },
 ];
 
-export const metadata = {
+export const metadata: Metadata = {
   title: 'Home Bias in Investing: Why It Matters and How to Fix It',
   description:
     'Home bias concentrates risk in one country. Learn why it happens, how it hurts returns, and simple steps to global diversification.',
+  alternates: {
+    canonical: 'https://investingfire.com/learn/home-bias-in-investing',
+  },
   openGraph: {
     title: 'Home Bias in Investing: Why It Matters and How to Fix It',
     description: 'Reduce country concentration, improve diversification, and stay tax aware.',
     type: 'article',
+    siteName: 'InvestingFIRE',
     url: 'https://investingfire.com/learn/home-bias-in-investing',
+    images: [
+      {
+        url: 'https://investingfire.com/apple-icon.png',
+        width: 180,
+        height: 180,
+        alt: 'InvestingFIRE Logo',
+      },
+    ],
   },
 };
 

src/app/learn/page.tsx

@@ -2,11 +2,30 @@ import Link from 'next/link';
 import { Card, CardContent, CardDescription, CardHeader, CardTitle } from '@/components/ui/card';
 import BlurThing from '../components/blur-thing';
 import { RETIRE_AT_AGE_PRESETS } from '@/lib/retire-at';
+import type { Metadata } from 'next';
 
-export const metadata = {
+export const metadata: Metadata = {
   title: 'Learn FIRE | Financial Independence Guides & Resources',
   description:
     'Master the art of Financial Independence and Early Retirement. Deep dives into safe withdrawal rates, asset allocation, and FIRE strategies.',
+  alternates: {
+    canonical: 'https://investingfire.com/learn',
+  },
+  openGraph: {
+    title: 'Learn FIRE | Financial Independence Guides & Resources',
+    description:
+      'Master the art of Financial Independence and Early Retirement. Deep dives into safe withdrawal rates, asset allocation, and FIRE strategies.',
+    siteName: 'InvestingFIRE',
+    url: 'https://investingfire.com/learn',
+    images: [
+      {
+        url: 'https://investingfire.com/apple-icon.png',
+        width: 180,
+        height: 180,
+        alt: 'InvestingFIRE Logo',
+      },
+    ],
+  },
 };
 
 const retireAgeLinks = RETIRE_AT_AGE_PRESETS;

src/app/learn/retire-at/[age]/page.tsx

@@ -76,7 +76,16 @@ export const generateMetadata = async ({ params }: RetireAtPageProps): Promise<M
       title,
       description,
       url: canonical,
+      siteName: 'InvestingFIRE',
       type: 'article',
+      images: [
+        {
+          url: 'https://investingfire.com/apple-icon.png',
+          width: 180,
+          height: 180,
+          alt: 'InvestingFIRE Logo',
+        },
+      ],
     },
   };
 };

src/app/learn/safe-withdrawal-rate-4-percent-rule/page.tsx

@@ -5,6 +5,7 @@ import { Info } from 'lucide-react';
 import { FourPercentRuleChart } from '@/app/components/charts/FourPercentRuleChart';
 import { AuthorBio } from '@/app/components/AuthorBio';
 import { FaqSection, type FaqItem } from '@/app/components/FaqSection';
+import type { Metadata } from 'next';
 
 const faqs: FaqItem[] = [
   {
@@ -39,14 +40,26 @@ const faqs: FaqItem[] = [
   },
 ];
 
-export const metadata = {
+export const metadata: Metadata = {
   title: 'Safe Withdrawal Rates & The 4% Rule Explained (2025 Update)',
   description: `Is the 4% rule safe in ${new Date().getFullYear().toString()}? We analyze the Trinity Study, sequence of returns risk, and variable withdrawal strategies for a bulletproof retirement.`,
+  alternates: {
+    canonical: 'https://investingfire.com/learn/safe-withdrawal-rate-4-percent-rule',
+  },
   openGraph: {
     title: 'Safe Withdrawal Rates & The 4% Rule Explained',
     description: "Don't run out of money. Understanding the math behind safe retirement withdrawals.",
     type: 'article',
+    siteName: 'InvestingFIRE',
     url: 'https://investingfire.com/learn/safe-withdrawal-rate-4-percent-rule',
+    images: [
+      {
+        url: 'https://investingfire.com/apple-icon.png',
+        width: 180,
+        height: 180,
+        alt: 'InvestingFIRE Logo',
+      },
+    ],
   },
 };
 

src/app/learn/what-is-fire/page.tsx

@@ -3,6 +3,7 @@ import { Button } from '@/components/ui/button';
 import { FireFlowchart } from '@/app/components/charts/FireFlowchart';
 import { AuthorBio } from '@/app/components/AuthorBio';
 import { FaqSection, type FaqItem } from '@/app/components/FaqSection';
+import type { Metadata } from 'next';
 
 const faqs: FaqItem[] = [
   {
@@ -37,15 +38,27 @@ const faqs: FaqItem[] = [
   },
 ];
 
-export const metadata = {
+export const metadata: Metadata = {
   title: `What is FIRE? The Ultimate Guide to Financial Independence (${new Date().getFullYear().toString()})`,
   description:
     'Discover the FIRE movement (Financial Independence, Retire Early). Learn how to calculate your FIRE number, savings rate, and retire decades ahead of schedule.',
+  alternates: {
+    canonical: 'https://investingfire.com/learn/what-is-fire',
+  },
   openGraph: {
     title: 'What is FIRE? The Ultimate Guide to Financial Independence',
     description: 'Stop trading time for money. The comprehensive guide to regaining your freedom.',
     type: 'article',
+    siteName: 'InvestingFIRE',
     url: 'https://investingfire.com/learn/what-is-fire',
+    images: [
+      {
+        url: 'https://investingfire.com/apple-icon.png',
+        width: 180,
+        height: 180,
+        alt: 'InvestingFIRE Logo',
+      },
+    ],
   },
 };
 

src/app/learn/where-to-park-your-money/page.tsx

@@ -5,6 +5,7 @@ import { Button } from '@/components/ui/button';
 import { Info } from 'lucide-react';
 import { AuthorBio } from '@/app/components/AuthorBio';
 import { FaqSection, type FaqItem } from '@/app/components/FaqSection';
+import type { Metadata } from 'next';
 
 const faqs: FaqItem[] = [
   {
@@ -34,15 +35,27 @@ const faqs: FaqItem[] = [
   },
 ];
 
-export const metadata = {
+export const metadata: Metadata = {
   title: `Where to Park Your Money for FIRE (${new Date().getFullYear().toString()})`,
   description:
     'Build a globally diversified, low-cost index portfolio, avoid home bias, and use the right tax wrappers—wherever you live. A practical guide for FIRE investors.',
+  alternates: {
+    canonical: 'https://investingfire.com/learn/where-to-park-your-money',
+  },
   openGraph: {
     title: 'Where to Park Your Money for FIRE',
     description: 'Global index investing playbook: avoid home bias, cut fees, optimize taxes.',
     type: 'article',
+    siteName: 'InvestingFIRE',
     url: 'https://investingfire.com/learn/where-to-park-your-money',
+    images: [
+      {
+        url: 'https://investingfire.com/apple-icon.png',
+        width: 180,
+        height: 180,
+        alt: 'InvestingFIRE Logo',
+      },
+    ],
   },
 };
 

src/app/page.tsx

@@ -4,6 +4,7 @@ import FireCalculatorForm from './components/FireCalculatorForm';
 import BackgroundPattern from './components/BackgroundPattern';
 import { FaqSection, type FaqItem } from './components/FaqSection';
 import { Testimonials } from './components/Testimonials';
+import type { Metadata } from 'next';
 
 const faqs: FaqItem[] = [
   {
@@ -38,6 +39,31 @@ const faqs: FaqItem[] = [
   },
 ];
 
+export const metadata: Metadata = {
+  title: `InvestingFIRE | Finance and Retirement Calculator ${new Date().getFullYear().toString()}`,
+  description:
+    'Achieve Financial Independence & Early Retirement! Plan your FIRE journey with the InvestingFIRE calculator and get personal projections in gorgeous graphs..',
+  alternates: {
+    canonical: 'https://investingfire.com',
+  },
+  openGraph: {
+    title: `InvestingFIRE | Finance and Retirement Calculator ${new Date().getFullYear().toString()}`,
+    description:
+      'Achieve Financial Independence & Early Retirement! Plan your FIRE journey with the InvestingFIRE calculator and get personal projections in gorgeous graphs.',
+    type: 'website',
+    url: 'https://investingfire.com',
+    siteName: 'InvestingFIRE',
+    images: [
+      {
+        url: 'https://investingfire.com/apple-icon.png',
+        width: 180,
+        height: 180,
+        alt: 'InvestingFIRE Logo',
+      },
+    ],
+  },
+};
+
 export default function HomePage() {
   return (
     <div className="from-background via-primary/10 to-secondary/10 text-foreground relative flex min-h-screen w-full flex-col items-center overflow-hidden bg-gradient-to-b px-4 pt-6 pb-16">