Initial build: personal annual letter + podcast year-end email generator

- Monthly journal: 6 prompts per month, saved to localStorage
- Year-end reflections: 6 closing prompts compiled into a letter
- Podcast module: 9 prompts → ready-to-send listener email with preview tab
- Home dashboard: month grid, progress bar, year-end task checklist
- Letter view: formatted narrative with Copy and Download
- Dockerfile + nginx.conf for containerized deployment

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

src/utils/letterTemplate.ts

@@ -0,0 +1,80 @@
+import { MONTH_NAMES } from "../types";
+import type { AppData } from "../types";
+
+export function generateLetter(data: AppData, year: number): string {
+  const name = data.name || "Friend";
+  const entries = data.monthlyEntries
+    .filter((e) => e.year === year)
+    .sort((a, b) => a.month - b.month);
+  const yearEnd = data.yearEndEntries.find((e) => e.year === year);
+
+  const today = new Date();
+  const dateStr = today.toLocaleDateString("en-US", {
+    year: "numeric",
+    month: "long",
+    day: "numeric",
+  });
+
+  let letter = `${year} Annual Letter\n`;
+  letter += `Written ${dateStr}\n\n`;
+  letter += `Dear ${name},\n\n`;
+
+  if (yearEnd?.answers.word) {
+    letter += `If ${year} had a single word, it would be: *${yearEnd.answers.word}*.\n\n`;
+  }
+
+  if (entries.length === 0 && !yearEnd) {
+    letter +=
+      "This letter is still being written. Return here at the end of the year to read it.\n";
+    return letter;
+  }
+
+  // Monthly narrative
+  if (entries.length > 0) {
+    letter += `Here is what the months held:\n\n`;
+    for (const entry of entries) {
+      const monthName = MONTH_NAMES[entry.month];
+      letter += `**${monthName}**\n`;
+      const parts: string[] = [];
+
+      if (entry.answers.win)
+        parts.push(`The month's bright spot: ${entry.answers.win}.`);
+      if (entry.answers.challenge)
+        parts.push(`You were tested by: ${entry.answers.challenge}.`);
+      if (entry.answers.learned)
+        parts.push(`You learned: ${entry.answers.learned}.`);
+      if (entry.answers.memory)
+        parts.push(`The moment to hold onto: ${entry.answers.memory}.`);
+      if (entry.answers.people)
+        parts.push(`The people in the picture: ${entry.answers.people}.`);
+      if (entry.answers.forward)
+        parts.push(`Carrying forward: ${entry.answers.forward}.`);
+
+      letter += parts.join("\n") + "\n\n";
+    }
+  }
+
+  // Year-end reflections
+  if (yearEnd) {
+    letter += `**Looking back at the full year:**\n\n`;
+    if (yearEnd.answers.change)
+      letter += `The most important thing that changed: ${yearEnd.answers.change}\n\n`;
+    if (yearEnd.answers.identity)
+      letter += `What the year taught you about yourself: ${yearEnd.answers.identity}\n\n`;
+    if (yearEnd.answers.gratitude)
+      letter += `What you were most grateful for: ${yearEnd.answers.gratitude}\n\n`;
+    if (yearEnd.answers.release)
+      letter += `What you're ready to leave behind: ${yearEnd.answers.release}\n\n`;
+    if (yearEnd.answers.carry)
+      letter += `What you're carrying forward: ${yearEnd.answers.carry}\n\n`;
+  }
+
+  const completedMonths = entries.length;
+  if (completedMonths < 12) {
+    const remaining = 12 - completedMonths;
+    letter += `*${remaining} month${remaining !== 1 ? "s" : ""} of this year are still being written.*\n\n`;
+  }
+
+  letter += `With love,\n${name} — ${year}`;
+  return letter;
+}