initial project setup

Fastify + Prisma backend, React + Vite frontend, Docker deployment. Multi-board feedback platform with anonymous cookie auth, passkey upgrade path, ALTCHA spam protection, plugin system, and full privacy-first architecture.
2026-03-19 18:05:16 +02:00
commit f07eddf29e
77 changed files with 7031 additions and 0 deletions
--- a/packages/api/package.json
+++ b/packages/api/package.json
@@ -0,0 +1,42 @@
+{
+  "name": "@echoboard/api",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "main": "dist/index.js",
+  "scripts": {
+    "dev": "tsx watch src/index.ts",
+    "build": "tsc",
+    "start": "node dist/index.js",
+    "db:migrate": "prisma migrate dev",
+    "db:generate": "prisma generate",
+    "db:deploy": "prisma migrate deploy",
+    "create-admin": "tsx src/cli/create-admin.ts"
+  },
+  "dependencies": {
+    "@fastify/cookie": "^11.0.0",
+    "@fastify/cors": "^10.0.0",
+    "@fastify/rate-limit": "^10.0.0",
+    "@fastify/static": "^8.0.0",
+    "@prisma/client": "^6.0.0",
+    "@simplewebauthn/server": "^11.0.0",
+    "altcha-lib": "^0.5.0",
+    "bcrypt": "^5.1.0",
+    "fastify": "^5.0.0",
+    "fastify-plugin": "^5.0.0",
+    "jsonwebtoken": "^9.0.0",
+    "node-cron": "^3.0.0",
+    "rss": "^1.2.0",
+    "web-push": "^3.6.0",
+    "zod": "^3.23.0"
+  },
+  "devDependencies": {
+    "@types/bcrypt": "^5.0.0",
+    "@types/jsonwebtoken": "^9.0.0",
+    "@types/node": "^22.0.0",
+    "@types/web-push": "^3.6.0",
+    "prisma": "^6.0.0",
+    "tsx": "^4.19.0",
+    "typescript": "^5.7.0"
+  }
+}
--- a/packages/api/prisma/schema.prisma
+++ b/packages/api/prisma/schema.prisma
@@ -0,0 +1,213 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+enum AuthMethod {
+  COOKIE
+  PASSKEY
+}
+
+enum PostType {
+  FEATURE_REQUEST
+  BUG_REPORT
+}
+
+enum PostStatus {
+  OPEN
+  UNDER_REVIEW
+  PLANNED
+  IN_PROGRESS
+  DONE
+  DECLINED
+}
+
+model Board {
+  id               String   @id @default(cuid())
+  slug             String   @unique
+  name             String
+  description      String?
+  externalUrl      String?
+  isArchived       Boolean  @default(false)
+  voteBudget       Int      @default(10)
+  voteBudgetReset  String   @default("monthly")
+  lastBudgetReset  DateTime?
+  allowMultiVote   Boolean  @default(false)
+  createdAt        DateTime @default(now())
+  updatedAt        DateTime @updatedAt
+
+  posts            Post[]
+  activityEvents   ActivityEvent[]
+  pushSubscriptions PushSubscription[]
+}
+
+model User {
+  id           String     @id @default(cuid())
+  authMethod   AuthMethod @default(COOKIE)
+  tokenHash    String?    @unique
+  username     String?
+  usernameIdx  String?    @unique
+  displayName  String?
+  darkMode     String     @default("system")
+  createdAt    DateTime   @default(now())
+  updatedAt    DateTime   @updatedAt
+
+  passkeys     Passkey[]
+  posts        Post[]
+  comments     Comment[]
+  reactions    Reaction[]
+  votes        Vote[]
+  pushSubscriptions PushSubscription[]
+}
+
+model Passkey {
+  id                   String   @id @default(cuid())
+  credentialId         String
+  credentialIdIdx      String   @unique
+  credentialPublicKey  Bytes
+  counter              BigInt
+  credentialDeviceType String
+  credentialBackedUp   Boolean
+  transports           String?
+  userId               String
+  createdAt            DateTime @default(now())
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+}
+
+model Post {
+  id          String     @id @default(cuid())
+  type        PostType
+  title       String
+  description Json
+  status      PostStatus @default(OPEN)
+  category    String?
+  voteCount   Int        @default(0)
+  isPinned    Boolean    @default(false)
+  boardId     String
+  authorId    String
+  createdAt   DateTime   @default(now())
+  updatedAt   DateTime   @updatedAt
+
+  board          Board           @relation(fields: [boardId], references: [id], onDelete: Cascade)
+  author         User            @relation(fields: [authorId], references: [id], onDelete: Cascade)
+  statusChanges  StatusChange[]
+  comments       Comment[]
+  votes          Vote[]
+  adminResponses AdminResponse[]
+  activityEvents ActivityEvent[]
+  pushSubscriptions PushSubscription[]
+}
+
+model StatusChange {
+  id         String     @id @default(cuid())
+  postId     String
+  fromStatus PostStatus
+  toStatus   PostStatus
+  changedBy  String
+  createdAt  DateTime   @default(now())
+
+  post Post @relation(fields: [postId], references: [id], onDelete: Cascade)
+}
+
+model Comment {
+  id        String   @id @default(cuid())
+  body      String
+  postId    String
+  authorId  String
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+
+  post      Post       @relation(fields: [postId], references: [id], onDelete: Cascade)
+  author    User       @relation(fields: [authorId], references: [id], onDelete: Cascade)
+  reactions Reaction[]
+}
+
+model Reaction {
+  id        String   @id @default(cuid())
+  emoji     String
+  commentId String
+  userId    String
+  createdAt DateTime @default(now())
+
+  comment Comment @relation(fields: [commentId], references: [id], onDelete: Cascade)
+  user    User    @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@unique([commentId, userId, emoji])
+}
+
+model Vote {
+  id           String   @id @default(cuid())
+  weight       Int      @default(1)
+  postId       String
+  voterId      String
+  budgetPeriod String
+  createdAt    DateTime @default(now())
+
+  post  Post @relation(fields: [postId], references: [id], onDelete: Cascade)
+  voter User @relation(fields: [voterId], references: [id], onDelete: Cascade)
+
+  @@unique([postId, voterId])
+}
+
+model AdminUser {
+  id           String   @id @default(cuid())
+  email        String   @unique
+  passwordHash String
+  createdAt    DateTime @default(now())
+
+  responses AdminResponse[]
+}
+
+model AdminResponse {
+  id        String   @id @default(cuid())
+  body      String
+  postId    String
+  adminId   String
+  createdAt DateTime @default(now())
+
+  post  Post      @relation(fields: [postId], references: [id], onDelete: Cascade)
+  admin AdminUser @relation(fields: [adminId], references: [id], onDelete: Cascade)
+}
+
+model ActivityEvent {
+  id        String   @id @default(cuid())
+  type      String
+  boardId   String
+  postId    String?
+  metadata  Json
+  createdAt DateTime @default(now())
+
+  board Board @relation(fields: [boardId], references: [id], onDelete: Cascade)
+  post  Post?  @relation(fields: [postId], references: [id], onDelete: SetNull)
+
+  @@index([boardId, createdAt])
+  @@index([createdAt])
+}
+
+model PushSubscription {
+  id          String   @id @default(cuid())
+  endpoint    String
+  endpointIdx String   @unique
+  keysP256dh  String
+  keysAuth    String
+  userId      String
+  boardId     String?
+  postId      String?
+  createdAt   DateTime @default(now())
+
+  user  User   @relation(fields: [userId], references: [id], onDelete: Cascade)
+  board Board? @relation(fields: [boardId], references: [id], onDelete: Cascade)
+  post  Post?  @relation(fields: [postId], references: [id], onDelete: SetNull)
+}
+
+model Category {
+  id        String   @id @default(cuid())
+  name      String   @unique
+  slug      String   @unique
+  createdAt DateTime @default(now())
+}
--- a/packages/api/src/cli/create-admin.ts
+++ b/packages/api/src/cli/create-admin.ts
@@ -0,0 +1,86 @@
+import { PrismaClient } from "@prisma/client";
+import bcrypt from "bcrypt";
+import { createInterface } from "node:readline";
+
+const prisma = new PrismaClient();
+
+function getArg(name: string): string | undefined {
+  const idx = process.argv.indexOf(`--${name}`);
+  if (idx === -1 || idx + 1 >= process.argv.length) return undefined;
+  return process.argv[idx + 1];
+}
+
+function readLine(prompt: string, hidden = false): Promise<string> {
+  return new Promise((resolve) => {
+    const rl = createInterface({ input: process.stdin, output: process.stdout });
+    if (hidden) {
+      process.stdout.write(prompt);
+      let input = "";
+      process.stdin.setRawMode?.(true);
+      process.stdin.resume();
+      process.stdin.setEncoding("utf8");
+      const handler = (ch: string) => {
+        if (ch === "\n" || ch === "\r" || ch === "\u0004") {
+          process.stdin.setRawMode?.(false);
+          process.stdin.removeListener("data", handler);
+          process.stdout.write("\n");
+          rl.close();
+          resolve(input);
+        } else if (ch === "\u007F" || ch === "\b") {
+          if (input.length > 0) {
+            input = input.slice(0, -1);
+            process.stdout.write("\b \b");
+          }
+        } else {
+          input += ch;
+          process.stdout.write("*");
+        }
+      };
+      process.stdin.on("data", handler);
+    } else {
+      rl.question(prompt, (answer) => {
+        rl.close();
+        resolve(answer);
+      });
+    }
+  });
+}
+
+async function main() {
+  const email = getArg("email") ?? await readLine("Email: ");
+  if (!email) {
+    console.error("Email is required");
+    process.exit(1);
+  }
+
+  const existing = await prisma.adminUser.findUnique({ where: { email } });
+  if (existing) {
+    console.error("Admin with this email already exists");
+    process.exit(1);
+  }
+
+  const password = await readLine("Password: ", true);
+  if (!password || password.length < 8) {
+    console.error("Password must be at least 8 characters");
+    process.exit(1);
+  }
+
+  const confirm = await readLine("Confirm password: ", true);
+  if (password !== confirm) {
+    console.error("Passwords do not match");
+    process.exit(1);
+  }
+
+  const hash = await bcrypt.hash(password, 12);
+  const admin = await prisma.adminUser.create({
+    data: { email, passwordHash: hash },
+  });
+
+  console.log(`Admin created: ${admin.email} (${admin.id})`);
+  await prisma.$disconnect();
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});
--- a/packages/api/src/config.ts
+++ b/packages/api/src/config.ts
@@ -0,0 +1,41 @@
+import { z } from "zod";
+
+const schema = z.object({
+  DATABASE_URL: z.string(),
+  APP_MASTER_KEY: z.string().regex(/^[0-9a-fA-F]{64}$/, "Must be hex-encoded 256-bit key"),
+  APP_BLIND_INDEX_KEY: z.string().regex(/^[0-9a-fA-F]+$/, "Must be hex-encoded"),
+  TOKEN_SECRET: z.string(),
+  JWT_SECRET: z.string(),
+  ALTCHA_HMAC_KEY: z.string(),
+
+  WEBAUTHN_RP_NAME: z.string().default("Echoboard"),
+  WEBAUTHN_RP_ID: z.string(),
+  WEBAUTHN_ORIGIN: z.string().url(),
+
+  PORT: z.coerce.number().default(3000),
+  ALTCHA_MAX_NUMBER: z.coerce.number().default(500000),
+  ALTCHA_MAX_NUMBER_VOTE: z.coerce.number().default(50000),
+  ALTCHA_EXPIRE_SECONDS: z.coerce.number().default(300),
+
+  VAPID_PUBLIC_KEY: z.string().optional(),
+  VAPID_PRIVATE_KEY: z.string().optional(),
+  VAPID_CONTACT: z.string().optional(),
+
+  DATA_RETENTION_ACTIVITY_DAYS: z.coerce.number().default(90),
+  DATA_RETENTION_ORPHAN_USER_DAYS: z.coerce.number().default(180),
+});
+
+const parsed = schema.safeParse(process.env);
+
+if (!parsed.success) {
+  console.error("Invalid environment variables:");
+  for (const issue of parsed.error.issues) {
+    console.error(`  ${issue.path.join(".")}: ${issue.message}`);
+  }
+  process.exit(1);
+}
+
+export const config = parsed.data;
+
+export const masterKey = Buffer.from(config.APP_MASTER_KEY, "hex");
+export const blindIndexKey = Buffer.from(config.APP_BLIND_INDEX_KEY, "hex");
--- a/packages/api/src/cron/index.ts
+++ b/packages/api/src/cron/index.ts
@@ -0,0 +1,60 @@
+import cron from "node-cron";
+import { PrismaClient } from "@prisma/client";
+import { config } from "../config.js";
+import { cleanExpiredChallenges } from "../routes/passkey.js";
+
+const prisma = new PrismaClient();
+
+export function startCronJobs() {
+  // prune old activity events - daily at 3am
+  cron.schedule("0 3 * * *", async () => {
+    const cutoff = new Date();
+    cutoff.setDate(cutoff.getDate() - config.DATA_RETENTION_ACTIVITY_DAYS);
+
+    const result = await prisma.activityEvent.deleteMany({
+      where: { createdAt: { lt: cutoff } },
+    });
+    if (result.count > 0) {
+      console.log(`Pruned ${result.count} old activity events`);
+    }
+  });
+
+  // prune orphaned anonymous users - daily at 4am
+  cron.schedule("0 4 * * *", async () => {
+    const cutoff = new Date();
+    cutoff.setDate(cutoff.getDate() - config.DATA_RETENTION_ORPHAN_USER_DAYS);
+
+    const result = await prisma.user.deleteMany({
+      where: {
+        authMethod: "COOKIE",
+        createdAt: { lt: cutoff },
+        posts: { none: {} },
+        comments: { none: {} },
+        votes: { none: {} },
+      },
+    });
+    if (result.count > 0) {
+      console.log(`Pruned ${result.count} orphaned users`);
+    }
+  });
+
+  // clean webauthn challenges - every 10 minutes
+  cron.schedule("*/10 * * * *", () => {
+    cleanExpiredChallenges();
+  });
+
+  // remove failed push subscriptions - daily at 5am
+  cron.schedule("0 5 * * *", async () => {
+    // subscriptions with no associated user get cleaned by cascade
+    // this handles any other stale ones
+    const cutoff = new Date();
+    cutoff.setDate(cutoff.getDate() - 30);
+
+    const result = await prisma.pushSubscription.deleteMany({
+      where: { createdAt: { lt: cutoff } },
+    });
+    if (result.count > 0) {
+      console.log(`Cleaned ${result.count} old push subscriptions`);
+    }
+  });
+}
--- a/packages/api/src/index.ts
+++ b/packages/api/src/index.ts
@@ -0,0 +1,19 @@
+import { createServer } from "./server.js";
+import { config } from "./config.js";
+import { startCronJobs } from "./cron/index.js";
+
+async function main() {
+  const app = await createServer();
+
+  startCronJobs();
+
+  try {
+    await app.listen({ port: config.PORT, host: "0.0.0.0" });
+    console.log(`Echoboard API running on port ${config.PORT}`);
+  } catch (err) {
+    app.log.error(err);
+    process.exit(1);
+  }
+}
+
+main();
--- a/packages/api/src/lib/budget.ts
+++ b/packages/api/src/lib/budget.ts
@@ -0,0 +1,74 @@
+import { PrismaClient } from "@prisma/client";
+
+const prisma = new PrismaClient();
+
+export function getCurrentPeriod(resetSchedule: string): string {
+  const now = new Date();
+  const year = now.getFullYear();
+  const month = String(now.getMonth() + 1).padStart(2, "0");
+
+  switch (resetSchedule) {
+    case "weekly": {
+      const startOfYear = new Date(year, 0, 1);
+      const days = Math.floor((now.getTime() - startOfYear.getTime()) / 86400000);
+      const week = Math.ceil((days + startOfYear.getDay() + 1) / 7);
+      return `${year}-W${String(week).padStart(2, "0")}`;
+    }
+    case "quarterly": {
+      const q = Math.ceil((now.getMonth() + 1) / 3);
+      return `${year}-Q${q}`;
+    }
+    case "yearly":
+      return `${year}`;
+    case "never":
+      return "lifetime";
+    case "monthly":
+    default:
+      return `${year}-${month}`;
+  }
+}
+
+export async function getRemainingBudget(userId: string, boardId: string): Promise<number> {
+  const board = await prisma.board.findUnique({ where: { id: boardId } });
+  if (!board) return 0;
+
+  if (board.voteBudgetReset === "never" && board.voteBudget === 0) {
+    return Infinity;
+  }
+
+  const period = getCurrentPeriod(board.voteBudgetReset);
+
+  const used = await prisma.vote.aggregate({
+    where: { voterId: userId, post: { boardId }, budgetPeriod: period },
+    _sum: { weight: true },
+  });
+
+  const spent = used._sum.weight ?? 0;
+  return Math.max(0, board.voteBudget - spent);
+}
+
+export function getNextResetDate(resetSchedule: string): Date {
+  const now = new Date();
+
+  switch (resetSchedule) {
+    case "weekly": {
+      const d = new Date(now);
+      d.setDate(d.getDate() + (7 - d.getDay()));
+      d.setHours(0, 0, 0, 0);
+      return d;
+    }
+    case "quarterly": {
+      const q = Math.ceil((now.getMonth() + 1) / 3);
+      return new Date(now.getFullYear(), q * 3, 1);
+    }
+    case "yearly":
+      return new Date(now.getFullYear() + 1, 0, 1);
+    case "never":
+      return new Date(8640000000000000); // max date
+    case "monthly":
+    default: {
+      const d = new Date(now.getFullYear(), now.getMonth() + 1, 1);
+      return d;
+    }
+  }
+}
--- a/packages/api/src/middleware/auth.ts
+++ b/packages/api/src/middleware/auth.ts
@@ -0,0 +1,102 @@
+import { FastifyInstance, FastifyRequest, FastifyReply } from "fastify";
+import fp from "fastify-plugin";
+import jwt from "jsonwebtoken";
+import { PrismaClient, User } from "@prisma/client";
+import { hashToken } from "../services/encryption.js";
+import { config } from "../config.js";
+
+declare module "fastify" {
+  interface FastifyRequest {
+    user?: User;
+    adminId?: string;
+  }
+}
+
+const prisma = new PrismaClient();
+
+async function authPlugin(app: FastifyInstance) {
+  app.decorateRequest("user", undefined);
+  app.decorateRequest("adminId", undefined);
+
+  app.decorate("requireUser", async (req: FastifyRequest, reply: FastifyReply) => {
+    // try cookie auth first
+    const token = req.cookies?.echoboard_token;
+    if (token) {
+      const hash = hashToken(token);
+      const user = await prisma.user.findUnique({ where: { tokenHash: hash } });
+      if (user) {
+        req.user = user;
+        return;
+      }
+    }
+
+    // try bearer token (passkey sessions)
+    const authHeader = req.headers.authorization;
+    if (authHeader?.startsWith("Bearer ")) {
+      try {
+        const decoded = jwt.verify(authHeader.slice(7), config.JWT_SECRET) as { sub: string; type: string };
+        if (decoded.type === "passkey") {
+          const user = await prisma.user.findUnique({ where: { id: decoded.sub } });
+          if (user) {
+            req.user = user;
+            return;
+          }
+        }
+      } catch {
+        // invalid token
+      }
+    }
+
+    reply.status(401).send({ error: "Not authenticated" });
+  });
+
+  app.decorate("optionalUser", async (req: FastifyRequest) => {
+    const token = req.cookies?.echoboard_token;
+    if (token) {
+      const hash = hashToken(token);
+      const user = await prisma.user.findUnique({ where: { tokenHash: hash } });
+      if (user) req.user = user;
+      return;
+    }
+    const authHeader = req.headers.authorization;
+    if (authHeader?.startsWith("Bearer ")) {
+      try {
+        const decoded = jwt.verify(authHeader.slice(7), config.JWT_SECRET) as { sub: string; type: string };
+        if (decoded.type === "passkey") {
+          const user = await prisma.user.findUnique({ where: { id: decoded.sub } });
+          if (user) req.user = user;
+        }
+      } catch {
+        // invalid
+      }
+    }
+  });
+
+  app.decorate("requireAdmin", async (req: FastifyRequest, reply: FastifyReply) => {
+    const authHeader = req.headers.authorization;
+    if (!authHeader?.startsWith("Bearer ")) {
+      reply.status(401).send({ error: "Admin token required" });
+      return;
+    }
+    try {
+      const decoded = jwt.verify(authHeader.slice(7), config.JWT_SECRET) as { sub: string; type: string };
+      if (decoded.type !== "admin") {
+        reply.status(403).send({ error: "Admin access required" });
+        return;
+      }
+      req.adminId = decoded.sub;
+    } catch {
+      reply.status(401).send({ error: "Invalid admin token" });
+    }
+  });
+}
+
+declare module "fastify" {
+  interface FastifyInstance {
+    requireUser: (req: FastifyRequest, reply: FastifyReply) => Promise<void>;
+    optionalUser: (req: FastifyRequest) => Promise<void>;
+    requireAdmin: (req: FastifyRequest, reply: FastifyReply) => Promise<void>;
+  }
+}
+
+export default fp(authPlugin, { name: "auth" });
--- a/packages/api/src/middleware/security.ts
+++ b/packages/api/src/middleware/security.ts
@@ -0,0 +1,28 @@
+import { FastifyInstance } from "fastify";
+import fp from "fastify-plugin";
+
+async function securityPlugin(app: FastifyInstance) {
+  app.addHook("onSend", async (_req, reply) => {
+    reply.header("Content-Security-Policy", [
+      "default-src 'self'",
+      "script-src 'self'",
+      "style-src 'self' 'unsafe-inline'",
+      "img-src 'self' data:",
+      "font-src 'self'",
+      "connect-src 'self'",
+      "frame-ancestors 'none'",
+      "base-uri 'self'",
+      "form-action 'self'",
+    ].join("; "));
+    reply.header("Referrer-Policy", "no-referrer");
+    reply.header("X-Content-Type-Options", "nosniff");
+    reply.header("X-Frame-Options", "DENY");
+    reply.header("Strict-Transport-Security", "max-age=31536000; includeSubDomains");
+    reply.header("Permissions-Policy", "camera=(), microphone=(), geolocation=()");
+    reply.header("X-DNS-Prefetch-Control", "off");
+    reply.header("Cross-Origin-Opener-Policy", "same-origin");
+    reply.header("Cross-Origin-Resource-Policy", "same-origin");
+  });
+}
+
+export default fp(securityPlugin, { name: "security" });
--- a/packages/api/src/plugins/loader.ts
+++ b/packages/api/src/plugins/loader.ts
@@ -0,0 +1,32 @@
+import { FastifyInstance } from "fastify";
+import { readFile } from "node:fs/promises";
+import { resolve } from "node:path";
+import { PluginManifest, EchoboardPlugin } from "./types.js";
+
+export async function loadPlugins(app: FastifyInstance) {
+  const manifestPath = resolve(process.cwd(), "echoboard.plugins.json");
+  let manifest: PluginManifest;
+
+  try {
+    const raw = await readFile(manifestPath, "utf-8");
+    manifest = JSON.parse(raw);
+  } catch {
+    app.log.info("No plugin manifest found, skipping plugin loading");
+    return;
+  }
+
+  if (!manifest.plugins || !Array.isArray(manifest.plugins)) return;
+
+  for (const entry of manifest.plugins) {
+    if (!entry.enabled) continue;
+
+    try {
+      const mod = await import(entry.name) as { default: EchoboardPlugin };
+      const plugin = mod.default;
+      app.log.info(`Loading plugin: ${plugin.name} v${plugin.version}`);
+      await plugin.register(app, entry.config ?? {});
+    } catch (err) {
+      app.log.error(`Failed to load plugin ${entry.name}: ${err}`);
+    }
+  }
+}
--- a/packages/api/src/plugins/types.ts
+++ b/packages/api/src/plugins/types.ts
@@ -0,0 +1,17 @@
+import { FastifyInstance } from "fastify";
+
+export interface EchoboardPlugin {
+  name: string;
+  version: string;
+  register: (app: FastifyInstance, config: Record<string, unknown>) => Promise<void>;
+}
+
+export interface PluginConfig {
+  name: string;
+  enabled: boolean;
+  config?: Record<string, unknown>;
+}
+
+export interface PluginManifest {
+  plugins: PluginConfig[];
+}
--- a/packages/api/src/routes/activity.ts
+++ b/packages/api/src/routes/activity.ts
@@ -0,0 +1,49 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient, Prisma } from "@prisma/client";
+import { z } from "zod";
+
+const prisma = new PrismaClient();
+
+const querySchema = z.object({
+  board: z.string().optional(),
+  type: z.string().optional(),
+  page: z.coerce.number().min(1).default(1),
+  limit: z.coerce.number().min(1).max(100).default(30),
+});
+
+export default async function activityRoutes(app: FastifyInstance) {
+  app.get<{ Querystring: Record<string, string> }>(
+    "/activity",
+    async (req, reply) => {
+      const q = querySchema.parse(req.query);
+
+      const where: Prisma.ActivityEventWhereInput = {};
+      if (q.board) {
+        const board = await prisma.board.findUnique({ where: { slug: q.board } });
+        if (board) where.boardId = board.id;
+      }
+      if (q.type) where.type = q.type;
+
+      const [events, total] = await Promise.all([
+        prisma.activityEvent.findMany({
+          where,
+          orderBy: { createdAt: "desc" },
+          skip: (q.page - 1) * q.limit,
+          take: q.limit,
+          include: {
+            board: { select: { slug: true, name: true } },
+            post: { select: { id: true, title: true } },
+          },
+        }),
+        prisma.activityEvent.count({ where }),
+      ]);
+
+      reply.send({
+        events,
+        total,
+        page: q.page,
+        pages: Math.ceil(total / q.limit),
+      });
+    }
+  );
+}
--- a/packages/api/src/routes/admin/auth.ts
+++ b/packages/api/src/routes/admin/auth.ts
@@ -0,0 +1,42 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import bcrypt from "bcrypt";
+import jwt from "jsonwebtoken";
+import { z } from "zod";
+import { config } from "../../config.js";
+
+const prisma = new PrismaClient();
+
+const loginBody = z.object({
+  email: z.string().email(),
+  password: z.string().min(1),
+});
+
+export default async function adminAuthRoutes(app: FastifyInstance) {
+  app.post<{ Body: z.infer<typeof loginBody> }>(
+    "/admin/login",
+    async (req, reply) => {
+      const body = loginBody.parse(req.body);
+
+      const admin = await prisma.adminUser.findUnique({ where: { email: body.email } });
+      if (!admin) {
+        reply.status(401).send({ error: "Invalid credentials" });
+        return;
+      }
+
+      const valid = await bcrypt.compare(body.password, admin.passwordHash);
+      if (!valid) {
+        reply.status(401).send({ error: "Invalid credentials" });
+        return;
+      }
+
+      const token = jwt.sign(
+        { sub: admin.id, type: "admin" },
+        config.JWT_SECRET,
+        { expiresIn: "24h" }
+      );
+
+      reply.send({ token });
+    }
+  );
+}
--- a/packages/api/src/routes/admin/boards.ts
+++ b/packages/api/src/routes/admin/boards.ts
@@ -0,0 +1,112 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { z } from "zod";
+
+const prisma = new PrismaClient();
+
+const createBoardBody = z.object({
+  slug: z.string().min(2).max(50).regex(/^[a-z0-9-]+$/),
+  name: z.string().min(1).max(100),
+  description: z.string().max(500).optional(),
+  externalUrl: z.string().url().optional(),
+  voteBudget: z.number().int().min(0).default(10),
+  voteBudgetReset: z.enum(["weekly", "monthly", "quarterly", "yearly", "never"]).default("monthly"),
+  allowMultiVote: z.boolean().default(false),
+});
+
+const updateBoardBody = z.object({
+  name: z.string().min(1).max(100).optional(),
+  description: z.string().max(500).optional().nullable(),
+  externalUrl: z.string().url().optional().nullable(),
+  isArchived: z.boolean().optional(),
+  voteBudget: z.number().int().min(0).optional(),
+  voteBudgetReset: z.enum(["weekly", "monthly", "quarterly", "yearly", "never"]).optional(),
+  allowMultiVote: z.boolean().optional(),
+});
+
+export default async function adminBoardRoutes(app: FastifyInstance) {
+  app.get(
+    "/admin/boards",
+    { preHandler: [app.requireAdmin] },
+    async (_req, reply) => {
+      const boards = await prisma.board.findMany({
+        orderBy: { createdAt: "asc" },
+        include: {
+          _count: { select: { posts: true } },
+        },
+      });
+      reply.send(boards);
+    }
+  );
+
+  app.post<{ Body: z.infer<typeof createBoardBody> }>(
+    "/admin/boards",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const body = createBoardBody.parse(req.body);
+
+      const existing = await prisma.board.findUnique({ where: { slug: body.slug } });
+      if (existing) {
+        reply.status(409).send({ error: "Slug already taken" });
+        return;
+      }
+
+      const board = await prisma.board.create({ data: body });
+      reply.status(201).send(board);
+    }
+  );
+
+  app.put<{ Params: { id: string }; Body: z.infer<typeof updateBoardBody> }>(
+    "/admin/boards/:id",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { id: req.params.id } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      const body = updateBoardBody.parse(req.body);
+      const updated = await prisma.board.update({
+        where: { id: board.id },
+        data: body,
+      });
+
+      reply.send(updated);
+    }
+  );
+
+  app.post<{ Params: { id: string } }>(
+    "/admin/boards/:id/reset-budget",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { id: req.params.id } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      const updated = await prisma.board.update({
+        where: { id: board.id },
+        data: { lastBudgetReset: new Date() },
+      });
+
+      reply.send(updated);
+    }
+  );
+
+  app.delete<{ Params: { id: string } }>(
+    "/admin/boards/:id",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { id: req.params.id } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      await prisma.board.delete({ where: { id: board.id } });
+      reply.status(204).send();
+    }
+  );
+}
--- a/packages/api/src/routes/admin/categories.ts
+++ b/packages/api/src/routes/admin/categories.ts
@@ -0,0 +1,46 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { z } from "zod";
+
+const prisma = new PrismaClient();
+
+const createCategoryBody = z.object({
+  name: z.string().min(1).max(50),
+  slug: z.string().min(1).max(50).regex(/^[a-z0-9-]+$/),
+});
+
+export default async function adminCategoryRoutes(app: FastifyInstance) {
+  app.post<{ Body: z.infer<typeof createCategoryBody> }>(
+    "/admin/categories",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const body = createCategoryBody.parse(req.body);
+
+      const existing = await prisma.category.findFirst({
+        where: { OR: [{ name: body.name }, { slug: body.slug }] },
+      });
+      if (existing) {
+        reply.status(409).send({ error: "Category already exists" });
+        return;
+      }
+
+      const cat = await prisma.category.create({ data: body });
+      reply.status(201).send(cat);
+    }
+  );
+
+  app.delete<{ Params: { id: string } }>(
+    "/admin/categories/:id",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const cat = await prisma.category.findUnique({ where: { id: req.params.id } });
+      if (!cat) {
+        reply.status(404).send({ error: "Category not found" });
+        return;
+      }
+
+      await prisma.category.delete({ where: { id: cat.id } });
+      reply.status(204).send();
+    }
+  );
+}
--- a/packages/api/src/routes/admin/posts.ts
+++ b/packages/api/src/routes/admin/posts.ts
@@ -0,0 +1,173 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient, PostStatus, Prisma } from "@prisma/client";
+import { z } from "zod";
+import { notifyPostSubscribers } from "../../services/push.js";
+
+const prisma = new PrismaClient();
+
+const statusBody = z.object({
+  status: z.nativeEnum(PostStatus),
+});
+
+const respondBody = z.object({
+  body: z.string().min(1).max(5000),
+});
+
+export default async function adminPostRoutes(app: FastifyInstance) {
+  app.get<{ Querystring: Record<string, string> }>(
+    "/admin/posts",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const page = Math.max(1, parseInt(req.query.page ?? "1", 10));
+      const limit = Math.min(100, Math.max(1, parseInt(req.query.limit ?? "50", 10)));
+      const status = req.query.status as PostStatus | undefined;
+      const boardId = req.query.boardId;
+
+      const where: Prisma.PostWhereInput = {};
+      if (status) where.status = status;
+      if (boardId) where.boardId = boardId;
+
+      const [posts, total] = await Promise.all([
+        prisma.post.findMany({
+          where,
+          orderBy: { createdAt: "desc" },
+          skip: (page - 1) * limit,
+          take: limit,
+          include: {
+            board: { select: { slug: true, name: true } },
+            author: { select: { id: true, displayName: true } },
+            _count: { select: { comments: true, votes: true } },
+          },
+        }),
+        prisma.post.count({ where }),
+      ]);
+
+      reply.send({ posts, total, page, pages: Math.ceil(total / limit) });
+    }
+  );
+
+  app.put<{ Params: { id: string }; Body: z.infer<typeof statusBody> }>(
+    "/admin/posts/:id/status",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      const { status } = statusBody.parse(req.body);
+      const oldStatus = post.status;
+
+      const [updated] = await Promise.all([
+        prisma.post.update({ where: { id: post.id }, data: { status } }),
+        prisma.statusChange.create({
+          data: {
+            postId: post.id,
+            fromStatus: oldStatus,
+            toStatus: status,
+            changedBy: req.adminId!,
+          },
+        }),
+        prisma.activityEvent.create({
+          data: {
+            type: "status_changed",
+            boardId: post.boardId,
+            postId: post.id,
+            metadata: { from: oldStatus, to: status },
+          },
+        }),
+      ]);
+
+      await notifyPostSubscribers(post.id, {
+        title: "Status updated",
+        body: `"${post.title}" moved to ${status}`,
+        url: `/post/${post.id}`,
+        tag: `status-${post.id}`,
+      });
+
+      reply.send(updated);
+    }
+  );
+
+  app.put<{ Params: { id: string } }>(
+    "/admin/posts/:id/pin",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      const updated = await prisma.post.update({
+        where: { id: post.id },
+        data: { isPinned: !post.isPinned },
+      });
+
+      reply.send(updated);
+    }
+  );
+
+  app.post<{ Params: { id: string }; Body: z.infer<typeof respondBody> }>(
+    "/admin/posts/:id/respond",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      const { body } = respondBody.parse(req.body);
+
+      const response = await prisma.adminResponse.create({
+        data: {
+          body,
+          postId: post.id,
+          adminId: req.adminId!,
+        },
+        include: { admin: { select: { id: true, email: true } } },
+      });
+
+      await notifyPostSubscribers(post.id, {
+        title: "Official response",
+        body: body.slice(0, 100),
+        url: `/post/${post.id}`,
+        tag: `response-${post.id}`,
+      });
+
+      reply.status(201).send(response);
+    }
+  );
+
+  app.delete<{ Params: { id: string } }>(
+    "/admin/posts/:id",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      await prisma.post.delete({ where: { id: post.id } });
+      reply.status(204).send();
+    }
+  );
+
+  app.delete<{ Params: { id: string } }>(
+    "/admin/comments/:id",
+    { preHandler: [app.requireAdmin] },
+    async (req, reply) => {
+      const comment = await prisma.comment.findUnique({ where: { id: req.params.id } });
+      if (!comment) {
+        reply.status(404).send({ error: "Comment not found" });
+        return;
+      }
+
+      await prisma.comment.delete({ where: { id: comment.id } });
+      reply.status(204).send();
+    }
+  );
+}
--- a/packages/api/src/routes/admin/stats.ts
+++ b/packages/api/src/routes/admin/stats.ts
@@ -0,0 +1,86 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { config } from "../../config.js";
+
+const prisma = new PrismaClient();
+
+export default async function adminStatsRoutes(app: FastifyInstance) {
+  app.get(
+    "/admin/stats",
+    { preHandler: [app.requireAdmin] },
+    async (_req, reply) => {
+      const [
+        totalPosts,
+        totalUsers,
+        totalComments,
+        totalVotes,
+        postsByStatus,
+        postsByType,
+        boardStats,
+      ] = await Promise.all([
+        prisma.post.count(),
+        prisma.user.count(),
+        prisma.comment.count(),
+        prisma.vote.count(),
+        prisma.post.groupBy({ by: ["status"], _count: true }),
+        prisma.post.groupBy({ by: ["type"], _count: true }),
+        prisma.board.findMany({
+          select: {
+            id: true,
+            slug: true,
+            name: true,
+            _count: { select: { posts: true } },
+          },
+        }),
+      ]);
+
+      reply.send({
+        totals: {
+          posts: totalPosts,
+          users: totalUsers,
+          comments: totalComments,
+          votes: totalVotes,
+        },
+        postsByStatus: Object.fromEntries(postsByStatus.map((s) => [s.status, s._count])),
+        postsByType: Object.fromEntries(postsByType.map((t) => [t.type, t._count])),
+        boards: boardStats.map((b) => ({
+          id: b.id,
+          slug: b.slug,
+          name: b.name,
+          postCount: b._count.posts,
+        })),
+      });
+    }
+  );
+
+  app.get(
+    "/admin/data-retention",
+    { preHandler: [app.requireAdmin] },
+    async (_req, reply) => {
+      const activityCutoff = new Date();
+      activityCutoff.setDate(activityCutoff.getDate() - config.DATA_RETENTION_ACTIVITY_DAYS);
+
+      const orphanCutoff = new Date();
+      orphanCutoff.setDate(orphanCutoff.getDate() - config.DATA_RETENTION_ORPHAN_USER_DAYS);
+
+      const [staleEvents, orphanUsers] = await Promise.all([
+        prisma.activityEvent.count({ where: { createdAt: { lt: activityCutoff } } }),
+        prisma.user.count({
+          where: {
+            createdAt: { lt: orphanCutoff },
+            posts: { none: {} },
+            comments: { none: {} },
+            votes: { none: {} },
+          },
+        }),
+      ]);
+
+      reply.send({
+        activityRetentionDays: config.DATA_RETENTION_ACTIVITY_DAYS,
+        orphanRetentionDays: config.DATA_RETENTION_ORPHAN_USER_DAYS,
+        staleActivityEvents: staleEvents,
+        orphanedUsers: orphanUsers,
+      });
+    }
+  );
+}
--- a/packages/api/src/routes/boards.ts
+++ b/packages/api/src/routes/boards.ts
@@ -0,0 +1,64 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+
+const prisma = new PrismaClient();
+
+export default async function boardRoutes(app: FastifyInstance) {
+  app.get("/boards", async (_req, reply) => {
+    const boards = await prisma.board.findMany({
+      where: { isArchived: false },
+      include: {
+        _count: { select: { posts: true } },
+      },
+      orderBy: { createdAt: "asc" },
+    });
+
+    const result = boards.map((b) => ({
+      id: b.id,
+      slug: b.slug,
+      name: b.name,
+      description: b.description,
+      externalUrl: b.externalUrl,
+      voteBudget: b.voteBudget,
+      voteBudgetReset: b.voteBudgetReset,
+      allowMultiVote: b.allowMultiVote,
+      postCount: b._count.posts,
+      createdAt: b.createdAt,
+    }));
+
+    reply.send(result);
+  });
+
+  app.get<{ Params: { boardSlug: string } }>("/boards/:boardSlug", async (req, reply) => {
+    const board = await prisma.board.findUnique({
+      where: { slug: req.params.boardSlug },
+      include: {
+        _count: {
+          select: {
+            posts: true,
+          },
+        },
+      },
+    });
+
+    if (!board) {
+      reply.status(404).send({ error: "Board not found" });
+      return;
+    }
+
+    reply.send({
+      id: board.id,
+      slug: board.slug,
+      name: board.name,
+      description: board.description,
+      externalUrl: board.externalUrl,
+      isArchived: board.isArchived,
+      voteBudget: board.voteBudget,
+      voteBudgetReset: board.voteBudgetReset,
+      allowMultiVote: board.allowMultiVote,
+      postCount: board._count.posts,
+      createdAt: board.createdAt,
+      updatedAt: board.updatedAt,
+    });
+  });
+}
--- a/packages/api/src/routes/comments.ts
+++ b/packages/api/src/routes/comments.ts
@@ -0,0 +1,150 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { z } from "zod";
+import { verifyChallenge } from "../services/altcha.js";
+
+const prisma = new PrismaClient();
+
+const createCommentSchema = z.object({
+  body: z.string().min(1).max(5000),
+  altcha: z.string(),
+});
+
+const updateCommentSchema = z.object({
+  body: z.string().min(1).max(5000),
+});
+
+export default async function commentRoutes(app: FastifyInstance) {
+  app.get<{ Params: { boardSlug: string; id: string }; Querystring: { page?: string } }>(
+    "/boards/:boardSlug/posts/:id/comments",
+    async (req, reply) => {
+      const page = Math.max(1, parseInt(req.query.page ?? "1", 10));
+      const limit = 50;
+
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      const [comments, total] = await Promise.all([
+        prisma.comment.findMany({
+          where: { postId: post.id },
+          orderBy: { createdAt: "asc" },
+          skip: (page - 1) * limit,
+          take: limit,
+          include: {
+            author: { select: { id: true, displayName: true } },
+            reactions: {
+              select: { emoji: true, userId: true },
+            },
+          },
+        }),
+        prisma.comment.count({ where: { postId: post.id } }),
+      ]);
+
+      const grouped = comments.map((c) => {
+        const reactionMap: Record<string, { count: number; userIds: string[] }> = {};
+        for (const r of c.reactions) {
+          if (!reactionMap[r.emoji]) reactionMap[r.emoji] = { count: 0, userIds: [] };
+          reactionMap[r.emoji].count++;
+          reactionMap[r.emoji].userIds.push(r.userId);
+        }
+        return {
+          id: c.id,
+          body: c.body,
+          author: c.author,
+          reactions: reactionMap,
+          createdAt: c.createdAt,
+          updatedAt: c.updatedAt,
+        };
+      });
+
+      reply.send({ comments: grouped, total, page, pages: Math.ceil(total / limit) });
+    }
+  );
+
+  app.post<{ Params: { boardSlug: string; id: string }; Body: z.infer<typeof createCommentSchema> }>(
+    "/boards/:boardSlug/posts/:id/comments",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      const body = createCommentSchema.parse(req.body);
+      const valid = await verifyChallenge(body.altcha);
+      if (!valid) {
+        reply.status(400).send({ error: "Invalid challenge response" });
+        return;
+      }
+
+      const comment = await prisma.comment.create({
+        data: {
+          body: body.body,
+          postId: post.id,
+          authorId: req.user!.id,
+        },
+        include: {
+          author: { select: { id: true, displayName: true } },
+        },
+      });
+
+      await prisma.activityEvent.create({
+        data: {
+          type: "comment_created",
+          boardId: post.boardId,
+          postId: post.id,
+          metadata: {},
+        },
+      });
+
+      reply.status(201).send(comment);
+    }
+  );
+
+  app.put<{ Params: { id: string }; Body: z.infer<typeof updateCommentSchema> }>(
+    "/comments/:id",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const comment = await prisma.comment.findUnique({ where: { id: req.params.id } });
+      if (!comment) {
+        reply.status(404).send({ error: "Comment not found" });
+        return;
+      }
+      if (comment.authorId !== req.user!.id) {
+        reply.status(403).send({ error: "Not your comment" });
+        return;
+      }
+
+      const body = updateCommentSchema.parse(req.body);
+      const updated = await prisma.comment.update({
+        where: { id: comment.id },
+        data: { body: body.body },
+      });
+
+      reply.send(updated);
+    }
+  );
+
+  app.delete<{ Params: { id: string } }>(
+    "/comments/:id",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const comment = await prisma.comment.findUnique({ where: { id: req.params.id } });
+      if (!comment) {
+        reply.status(404).send({ error: "Comment not found" });
+        return;
+      }
+      if (comment.authorId !== req.user!.id) {
+        reply.status(403).send({ error: "Not your comment" });
+        return;
+      }
+
+      await prisma.comment.delete({ where: { id: comment.id } });
+      reply.status(204).send();
+    }
+  );
+}
--- a/packages/api/src/routes/feed.ts
+++ b/packages/api/src/routes/feed.ts
@@ -0,0 +1,69 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import RSS from "rss";
+
+const prisma = new PrismaClient();
+
+export default async function feedRoutes(app: FastifyInstance) {
+  app.get<{ Params: { boardSlug: string } }>(
+    "/boards/:boardSlug/feed.rss",
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { slug: req.params.boardSlug } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      const posts = await prisma.post.findMany({
+        where: { boardId: board.id },
+        orderBy: { createdAt: "desc" },
+        take: 50,
+      });
+
+      const feed = new RSS({
+        title: `${board.name} - Echoboard`,
+        description: board.description ?? "",
+        feed_url: `${req.protocol}://${req.hostname}/api/v1/boards/${board.slug}/feed.rss`,
+        site_url: `${req.protocol}://${req.hostname}`,
+      });
+
+      for (const post of posts) {
+        feed.item({
+          title: post.title,
+          description: `[${post.type}] ${post.status} - ${post.voteCount} votes`,
+          url: `${req.protocol}://${req.hostname}/board/${board.slug}/post/${post.id}`,
+          date: post.createdAt,
+          categories: post.category ? [post.category] : [],
+        });
+      }
+
+      reply.header("Content-Type", "application/rss+xml").send(feed.xml({ indent: true }));
+    }
+  );
+
+  app.get("/feed.rss", async (req, reply) => {
+    const posts = await prisma.post.findMany({
+      orderBy: { createdAt: "desc" },
+      take: 50,
+      include: { board: { select: { slug: true, name: true } } },
+    });
+
+    const feed = new RSS({
+      title: "Echoboard - All Feedback",
+      feed_url: `${req.protocol}://${req.hostname}/api/v1/feed.rss`,
+      site_url: `${req.protocol}://${req.hostname}`,
+    });
+
+    for (const post of posts) {
+      feed.item({
+        title: `[${post.board.name}] ${post.title}`,
+        description: `[${post.type}] ${post.status} - ${post.voteCount} votes`,
+        url: `${req.protocol}://${req.hostname}/board/${post.board.slug}/post/${post.id}`,
+        date: post.createdAt,
+        categories: post.category ? [post.category] : [],
+      });
+    }
+
+    reply.header("Content-Type", "application/rss+xml").send(feed.xml({ indent: true }));
+  });
+}
--- a/packages/api/src/routes/identity.ts
+++ b/packages/api/src/routes/identity.ts
@@ -0,0 +1,139 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { randomBytes } from "node:crypto";
+import { z } from "zod";
+import { hashToken, encrypt, decrypt } from "../services/encryption.js";
+import { masterKey } from "../config.js";
+
+const prisma = new PrismaClient();
+
+const updateMeSchema = z.object({
+  displayName: z.string().max(50).optional().nullable(),
+  darkMode: z.enum(["system", "light", "dark"]).optional(),
+});
+
+export default async function identityRoutes(app: FastifyInstance) {
+  app.post("/identity", async (_req, reply) => {
+    const token = randomBytes(32).toString("hex");
+    const hash = hashToken(token);
+
+    const user = await prisma.user.create({
+      data: { tokenHash: hash },
+    });
+
+    reply
+      .setCookie("echoboard_token", token, {
+        path: "/",
+        httpOnly: true,
+        sameSite: "strict",
+        secure: process.env.NODE_ENV === "production",
+        maxAge: 60 * 60 * 24 * 365,
+      })
+      .status(201)
+      .send({
+        id: user.id,
+        authMethod: user.authMethod,
+        darkMode: user.darkMode,
+      });
+  });
+
+  app.put<{ Body: z.infer<typeof updateMeSchema> }>(
+    "/me",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const body = updateMeSchema.parse(req.body);
+      const data: Record<string, any> = {};
+
+      if (body.displayName !== undefined) {
+        data.displayName = body.displayName ? encrypt(body.displayName, masterKey) : null;
+      }
+      if (body.darkMode !== undefined) {
+        data.darkMode = body.darkMode;
+      }
+
+      const updated = await prisma.user.update({
+        where: { id: req.user!.id },
+        data,
+      });
+
+      reply.send({
+        id: updated.id,
+        displayName: updated.displayName ? decrypt(updated.displayName, masterKey) : null,
+        darkMode: updated.darkMode,
+        authMethod: updated.authMethod,
+      });
+    }
+  );
+
+  app.get(
+    "/me/posts",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const posts = await prisma.post.findMany({
+        where: { authorId: req.user!.id },
+        orderBy: { createdAt: "desc" },
+        include: {
+          board: { select: { slug: true, name: true } },
+          _count: { select: { comments: true } },
+        },
+      });
+
+      reply.send(posts.map((p) => ({
+        id: p.id,
+        type: p.type,
+        title: p.title,
+        status: p.status,
+        voteCount: p.voteCount,
+        commentCount: p._count.comments,
+        board: p.board,
+        createdAt: p.createdAt,
+      })));
+    }
+  );
+
+  app.delete(
+    "/me",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      await prisma.user.delete({ where: { id: req.user!.id } });
+
+      reply
+        .clearCookie("echoboard_token", { path: "/" })
+        .send({ ok: true });
+    }
+  );
+
+  app.get(
+    "/me/export",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const userId = req.user!.id;
+
+      const [user, posts, comments, votes, reactions] = await Promise.all([
+        prisma.user.findUnique({ where: { id: userId } }),
+        prisma.post.findMany({ where: { authorId: userId } }),
+        prisma.comment.findMany({ where: { authorId: userId } }),
+        prisma.vote.findMany({ where: { voterId: userId } }),
+        prisma.reaction.findMany({ where: { userId } }),
+      ]);
+
+      const decryptedUser = user ? {
+        id: user.id,
+        authMethod: user.authMethod,
+        displayName: user.displayName ? decrypt(user.displayName, masterKey) : null,
+        username: user.username ? decrypt(user.username, masterKey) : null,
+        darkMode: user.darkMode,
+        createdAt: user.createdAt,
+      } : null;
+
+      reply.send({
+        user: decryptedUser,
+        posts,
+        comments,
+        votes: votes.map((v) => ({ postId: v.postId, weight: v.weight, createdAt: v.createdAt })),
+        reactions: reactions.map((r) => ({ commentId: r.commentId, emoji: r.emoji, createdAt: r.createdAt })),
+        exportedAt: new Date().toISOString(),
+      });
+    }
+  );
+}
--- a/packages/api/src/routes/passkey.ts
+++ b/packages/api/src/routes/passkey.ts
@@ -0,0 +1,247 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import {
+  generateRegistrationOptions,
+  verifyRegistrationResponse,
+  generateAuthenticationOptions,
+  verifyAuthenticationResponse,
+} from "@simplewebauthn/server";
+import type {
+  RegistrationResponseJSON,
+  AuthenticationResponseJSON,
+} from "@simplewebauthn/server";
+import jwt from "jsonwebtoken";
+import { z } from "zod";
+import { config, masterKey, blindIndexKey } from "../config.js";
+import { encrypt, decrypt, blindIndex } from "../services/encryption.js";
+
+const prisma = new PrismaClient();
+
+const challenges = new Map<string, { challenge: string; expires: number }>();
+
+function storeChallenge(userId: string, challenge: string) {
+  challenges.set(userId, { challenge, expires: Date.now() + 5 * 60 * 1000 });
+}
+
+function getChallenge(userId: string): string | null {
+  const entry = challenges.get(userId);
+  if (!entry || entry.expires < Date.now()) {
+    challenges.delete(userId);
+    return null;
+  }
+  challenges.delete(userId);
+  return entry.challenge;
+}
+
+export function cleanExpiredChallenges() {
+  const now = Date.now();
+  for (const [key, val] of challenges) {
+    if (val.expires < now) challenges.delete(key);
+  }
+}
+
+const registerBody = z.object({
+  username: z.string().min(3).max(30),
+});
+
+export default async function passkeyRoutes(app: FastifyInstance) {
+  app.post<{ Body: z.infer<typeof registerBody> }>(
+    "/auth/passkey/register/options",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const { username } = registerBody.parse(req.body);
+      const user = req.user!;
+
+      const usernameHash = blindIndex(username, blindIndexKey);
+      const existing = await prisma.user.findUnique({ where: { usernameIdx: usernameHash } });
+      if (existing && existing.id !== user.id) {
+        reply.status(409).send({ error: "Username taken" });
+        return;
+      }
+
+      const existingPasskeys = await prisma.passkey.findMany({ where: { userId: user.id } });
+
+      const options = await generateRegistrationOptions({
+        rpName: config.WEBAUTHN_RP_NAME,
+        rpID: config.WEBAUTHN_RP_ID,
+        userID: new TextEncoder().encode(user.id),
+        userName: username,
+        attestationType: "none",
+        excludeCredentials: existingPasskeys.map((pk) => ({
+          id: decrypt(pk.credentialId, masterKey),
+        })),
+        authenticatorSelection: {
+          residentKey: "preferred",
+          userVerification: "preferred",
+        },
+      });
+
+      storeChallenge(user.id, options.challenge);
+      reply.send(options);
+    }
+  );
+
+  app.post<{ Body: { response: RegistrationResponseJSON; username: string } }>(
+    "/auth/passkey/register/verify",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const user = req.user!;
+      const { response, username } = req.body;
+
+      const expectedChallenge = getChallenge(user.id);
+      if (!expectedChallenge) {
+        reply.status(400).send({ error: "Challenge expired" });
+        return;
+      }
+
+      let verification;
+      try {
+        verification = await verifyRegistrationResponse({
+          response,
+          expectedChallenge,
+          expectedOrigin: config.WEBAUTHN_ORIGIN,
+          expectedRPID: config.WEBAUTHN_RP_ID,
+        });
+      } catch (err: any) {
+        reply.status(400).send({ error: err.message });
+        return;
+      }
+
+      if (!verification.verified || !verification.registrationInfo) {
+        reply.status(400).send({ error: "Verification failed" });
+        return;
+      }
+
+      const { credential, credentialDeviceType, credentialBackedUp } = verification.registrationInfo;
+
+      const credIdStr = Buffer.from(credential.id).toString("base64url");
+
+      await prisma.passkey.create({
+        data: {
+          credentialId: encrypt(credIdStr, masterKey),
+          credentialIdIdx: blindIndex(credIdStr, blindIndexKey),
+          credentialPublicKey: Buffer.from(credential.publicKey),
+          counter: BigInt(credential.counter),
+          credentialDeviceType,
+          credentialBackedUp,
+          transports: credential.transports ? encrypt(JSON.stringify(credential.transports), masterKey) : null,
+          userId: user.id,
+        },
+      });
+
+      const usernameHash = blindIndex(username, blindIndexKey);
+      await prisma.user.update({
+        where: { id: user.id },
+        data: {
+          authMethod: "PASSKEY",
+          username: encrypt(username, masterKey),
+          usernameIdx: usernameHash,
+        },
+      });
+
+      reply.send({ verified: true });
+    }
+  );
+
+  app.post(
+    "/auth/passkey/login/options",
+    async (_req, reply) => {
+      const options = await generateAuthenticationOptions({
+        rpID: config.WEBAUTHN_RP_ID,
+        userVerification: "preferred",
+      });
+
+      storeChallenge("login:" + options.challenge, options.challenge);
+      reply.send(options);
+    }
+  );
+
+  app.post<{ Body: { response: AuthenticationResponseJSON } }>(
+    "/auth/passkey/login/verify",
+    async (req, reply) => {
+      const { response } = req.body;
+
+      const credIdStr = response.id;
+      const credIdx = blindIndex(credIdStr, blindIndexKey);
+
+      const passkey = await prisma.passkey.findUnique({ where: { credentialIdIdx: credIdx } });
+      if (!passkey) {
+        reply.status(400).send({ error: "Passkey not found" });
+        return;
+      }
+
+      const expectedChallenge = getChallenge("login:" + response.response.clientDataJSON);
+      // we stored with the challenge value, try to find it
+      let challenge: string | null = null;
+      for (const [key, val] of challenges) {
+        if (key.startsWith("login:") && val.expires > Date.now()) {
+          challenge = val.challenge;
+          challenges.delete(key);
+          break;
+        }
+      }
+      if (!challenge) {
+        reply.status(400).send({ error: "Challenge expired" });
+        return;
+      }
+
+      let verification;
+      try {
+        verification = await verifyAuthenticationResponse({
+          response,
+          expectedChallenge: challenge,
+          expectedOrigin: config.WEBAUTHN_ORIGIN,
+          expectedRPID: config.WEBAUTHN_RP_ID,
+          credential: {
+            id: decrypt(passkey.credentialId, masterKey),
+            publicKey: new Uint8Array(passkey.credentialPublicKey),
+            counter: Number(passkey.counter),
+            transports: passkey.transports
+              ? JSON.parse(decrypt(passkey.transports, masterKey))
+              : undefined,
+          },
+        });
+      } catch (err: any) {
+        reply.status(400).send({ error: err.message });
+        return;
+      }
+
+      if (!verification.verified) {
+        reply.status(400).send({ error: "Verification failed" });
+        return;
+      }
+
+      await prisma.passkey.update({
+        where: { id: passkey.id },
+        data: { counter: BigInt(verification.authenticationInfo.newCounter) },
+      });
+
+      const token = jwt.sign(
+        { sub: passkey.userId, type: "passkey" },
+        config.JWT_SECRET,
+        { expiresIn: "30d" }
+      );
+
+      reply.send({ verified: true, token });
+    }
+  );
+
+  app.post(
+    "/auth/passkey/logout",
+    { preHandler: [app.requireUser] },
+    async (_req, reply) => {
+      reply
+        .clearCookie("echoboard_token", { path: "/" })
+        .send({ ok: true });
+    }
+  );
+
+  app.get<{ Params: { name: string } }>(
+    "/auth/passkey/check-username/:name",
+    async (req, reply) => {
+      const hash = blindIndex(req.params.name, blindIndexKey);
+      const existing = await prisma.user.findUnique({ where: { usernameIdx: hash } });
+      reply.send({ available: !existing });
+    }
+  );
+}
--- a/packages/api/src/routes/posts.ts
+++ b/packages/api/src/routes/posts.ts
@@ -0,0 +1,216 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient, PostType, PostStatus, Prisma } from "@prisma/client";
+import { z } from "zod";
+import { verifyChallenge } from "../services/altcha.js";
+
+const prisma = new PrismaClient();
+
+const createPostSchema = z.object({
+  type: z.nativeEnum(PostType),
+  title: z.string().min(3).max(200),
+  description: z.any(),
+  category: z.string().optional(),
+  altcha: z.string(),
+});
+
+const updatePostSchema = z.object({
+  title: z.string().min(3).max(200).optional(),
+  description: z.any().optional(),
+  category: z.string().optional().nullable(),
+});
+
+const querySchema = z.object({
+  type: z.nativeEnum(PostType).optional(),
+  category: z.string().optional(),
+  status: z.nativeEnum(PostStatus).optional(),
+  sort: z.enum(["newest", "oldest", "top", "trending"]).default("newest"),
+  search: z.string().optional(),
+  page: z.coerce.number().min(1).default(1),
+  limit: z.coerce.number().min(1).max(100).default(20),
+});
+
+export default async function postRoutes(app: FastifyInstance) {
+  app.get<{ Params: { boardSlug: string }; Querystring: Record<string, string> }>(
+    "/boards/:boardSlug/posts",
+    { preHandler: [app.optionalUser] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { slug: req.params.boardSlug } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      const q = querySchema.parse(req.query);
+
+      const where: Prisma.PostWhereInput = { boardId: board.id };
+      if (q.type) where.type = q.type;
+      if (q.category) where.category = q.category;
+      if (q.status) where.status = q.status;
+      if (q.search) where.title = { contains: q.search, mode: "insensitive" };
+
+      let orderBy: Prisma.PostOrderByWithRelationInput;
+      switch (q.sort) {
+        case "oldest": orderBy = { createdAt: "asc" }; break;
+        case "top": orderBy = { voteCount: "desc" }; break;
+        case "trending": orderBy = { voteCount: "desc" }; break;
+        default: orderBy = { createdAt: "desc" };
+      }
+
+      const [posts, total] = await Promise.all([
+        prisma.post.findMany({
+          where,
+          orderBy: [{ isPinned: "desc" }, orderBy],
+          skip: (q.page - 1) * q.limit,
+          take: q.limit,
+          include: {
+            _count: { select: { comments: true } },
+            author: { select: { id: true, displayName: true } },
+          },
+        }),
+        prisma.post.count({ where }),
+      ]);
+
+      reply.send({
+        posts: posts.map((p) => ({
+          id: p.id,
+          type: p.type,
+          title: p.title,
+          status: p.status,
+          category: p.category,
+          voteCount: p.voteCount,
+          isPinned: p.isPinned,
+          commentCount: p._count.comments,
+          author: p.author,
+          createdAt: p.createdAt,
+          updatedAt: p.updatedAt,
+        })),
+        total,
+        page: q.page,
+        pages: Math.ceil(total / q.limit),
+      });
+    }
+  );
+
+  app.get<{ Params: { boardSlug: string; id: string } }>(
+    "/boards/:boardSlug/posts/:id",
+    { preHandler: [app.optionalUser] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({
+        where: { id: req.params.id },
+        include: {
+          author: { select: { id: true, displayName: true } },
+          _count: { select: { comments: true, votes: true } },
+          adminResponses: {
+            include: { admin: { select: { id: true, email: true } } },
+            orderBy: { createdAt: "asc" },
+          },
+          statusChanges: { orderBy: { createdAt: "asc" } },
+        },
+      });
+
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      let voted = false;
+      if (req.user) {
+        const existing = await prisma.vote.findUnique({
+          where: { postId_voterId: { postId: post.id, voterId: req.user.id } },
+        });
+        voted = !!existing;
+      }
+
+      reply.send({ ...post, voted });
+    }
+  );
+
+  app.post<{ Params: { boardSlug: string }; Body: z.infer<typeof createPostSchema> }>(
+    "/boards/:boardSlug/posts",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { slug: req.params.boardSlug } });
+      if (!board || board.isArchived) {
+        reply.status(404).send({ error: "Board not found or archived" });
+        return;
+      }
+
+      const body = createPostSchema.parse(req.body);
+
+      const valid = await verifyChallenge(body.altcha);
+      if (!valid) {
+        reply.status(400).send({ error: "Invalid challenge response" });
+        return;
+      }
+
+      const post = await prisma.post.create({
+        data: {
+          type: body.type,
+          title: body.title,
+          description: body.description,
+          category: body.category,
+          boardId: board.id,
+          authorId: req.user!.id,
+        },
+      });
+
+      await prisma.activityEvent.create({
+        data: {
+          type: "post_created",
+          boardId: board.id,
+          postId: post.id,
+          metadata: { title: post.title, type: post.type },
+        },
+      });
+
+      reply.status(201).send(post);
+    }
+  );
+
+  app.put<{ Params: { boardSlug: string; id: string }; Body: z.infer<typeof updatePostSchema> }>(
+    "/boards/:boardSlug/posts/:id",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+      if (post.authorId !== req.user!.id) {
+        reply.status(403).send({ error: "Not your post" });
+        return;
+      }
+
+      const body = updatePostSchema.parse(req.body);
+      const updated = await prisma.post.update({
+        where: { id: post.id },
+        data: {
+          ...(body.title !== undefined && { title: body.title }),
+          ...(body.description !== undefined && { description: body.description }),
+          ...(body.category !== undefined && { category: body.category }),
+        },
+      });
+
+      reply.send(updated);
+    }
+  );
+
+  app.delete<{ Params: { boardSlug: string; id: string } }>(
+    "/boards/:boardSlug/posts/:id",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+      if (post.authorId !== req.user!.id) {
+        reply.status(403).send({ error: "Not your post" });
+        return;
+      }
+
+      await prisma.post.delete({ where: { id: post.id } });
+      reply.status(204).send();
+    }
+  );
+}
--- a/packages/api/src/routes/privacy.ts
+++ b/packages/api/src/routes/privacy.ts
@@ -0,0 +1,50 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { generateChallenge } from "../services/altcha.js";
+import { config } from "../config.js";
+
+const prisma = new PrismaClient();
+
+export default async function privacyRoutes(app: FastifyInstance) {
+  app.get("/altcha/challenge", async (req, reply) => {
+    const difficulty = req.query && (req.query as any).difficulty === "light" ? "light" : "normal";
+    const challenge = await generateChallenge(difficulty as "normal" | "light");
+    reply.send(challenge);
+  });
+
+  app.get("/privacy/data-manifest", async (_req, reply) => {
+    reply.send({
+      dataCollected: {
+        anonymous: {
+          cookieToken: "SHA-256 hashed, used for session identity",
+          displayName: "AES-256-GCM encrypted, optional",
+          posts: "Stored with author reference, deletable",
+          comments: "Stored with author reference, deletable",
+          votes: "Stored with voter reference, deletable",
+          reactions: "Stored with user reference, deletable",
+        },
+        passkey: {
+          username: "AES-256-GCM encrypted with blind index",
+          credentialId: "AES-256-GCM encrypted with blind index",
+          publicKey: "Encrypted at rest",
+        },
+      },
+      retention: {
+        activityEvents: `${config.DATA_RETENTION_ACTIVITY_DAYS} days`,
+        orphanedUsers: `${config.DATA_RETENTION_ORPHAN_USER_DAYS} days`,
+      },
+      encryption: "AES-256-GCM with 96-bit random IV per value",
+      indexing: "HMAC-SHA256 blind indexes for lookups",
+      thirdParty: "None - fully self-hosted",
+      export: "GET /api/v1/me/export",
+      deletion: "DELETE /api/v1/me",
+    });
+  });
+
+  app.get("/categories", async (_req, reply) => {
+    const cats = await prisma.category.findMany({
+      orderBy: { name: "asc" },
+    });
+    reply.send(cats);
+  });
+}
--- a/packages/api/src/routes/push.ts
+++ b/packages/api/src/routes/push.ts
@@ -0,0 +1,91 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { z } from "zod";
+import { encrypt, blindIndex } from "../services/encryption.js";
+import { masterKey, blindIndexKey } from "../config.js";
+
+const prisma = new PrismaClient();
+
+const subscribeBody = z.object({
+  endpoint: z.string().url(),
+  keys: z.object({
+    p256dh: z.string(),
+    auth: z.string(),
+  }),
+  boardId: z.string().optional(),
+  postId: z.string().optional(),
+});
+
+const unsubscribeBody = z.object({
+  endpoint: z.string().url(),
+});
+
+export default async function pushRoutes(app: FastifyInstance) {
+  app.post<{ Body: z.infer<typeof subscribeBody> }>(
+    "/push/subscribe",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const body = subscribeBody.parse(req.body);
+      const endpointIdx = blindIndex(body.endpoint, blindIndexKey);
+
+      const existing = await prisma.pushSubscription.findUnique({ where: { endpointIdx } });
+      if (existing) {
+        await prisma.pushSubscription.update({
+          where: { id: existing.id },
+          data: {
+            boardId: body.boardId ?? null,
+            postId: body.postId ?? null,
+          },
+        });
+        reply.send({ ok: true, updated: true });
+        return;
+      }
+
+      await prisma.pushSubscription.create({
+        data: {
+          endpoint: encrypt(body.endpoint, masterKey),
+          endpointIdx,
+          keysP256dh: encrypt(body.keys.p256dh, masterKey),
+          keysAuth: encrypt(body.keys.auth, masterKey),
+          userId: req.user!.id,
+          boardId: body.boardId,
+          postId: body.postId,
+        },
+      });
+
+      reply.status(201).send({ ok: true });
+    }
+  );
+
+  app.delete<{ Body: z.infer<typeof unsubscribeBody> }>(
+    "/push/subscribe",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const body = unsubscribeBody.parse(req.body);
+      const endpointIdx = blindIndex(body.endpoint, blindIndexKey);
+
+      const deleted = await prisma.pushSubscription.deleteMany({
+        where: { endpointIdx, userId: req.user!.id },
+      });
+
+      if (deleted.count === 0) {
+        reply.status(404).send({ error: "Subscription not found" });
+        return;
+      }
+
+      reply.send({ ok: true });
+    }
+  );
+
+  app.get(
+    "/push/subscriptions",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const subs = await prisma.pushSubscription.findMany({
+        where: { userId: req.user!.id },
+        select: { id: true, boardId: true, postId: true, createdAt: true },
+      });
+      reply.send(subs);
+    }
+  );
+}
--- a/packages/api/src/routes/reactions.ts
+++ b/packages/api/src/routes/reactions.ts
@@ -0,0 +1,70 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { z } from "zod";
+
+const prisma = new PrismaClient();
+
+const reactionBody = z.object({
+  emoji: z.string().min(1).max(8),
+});
+
+export default async function reactionRoutes(app: FastifyInstance) {
+  app.post<{ Params: { id: string }; Body: z.infer<typeof reactionBody> }>(
+    "/comments/:id/reactions",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const comment = await prisma.comment.findUnique({ where: { id: req.params.id } });
+      if (!comment) {
+        reply.status(404).send({ error: "Comment not found" });
+        return;
+      }
+
+      const { emoji } = reactionBody.parse(req.body);
+
+      const existing = await prisma.reaction.findUnique({
+        where: {
+          commentId_userId_emoji: {
+            commentId: comment.id,
+            userId: req.user!.id,
+            emoji,
+          },
+        },
+      });
+
+      if (existing) {
+        await prisma.reaction.delete({ where: { id: existing.id } });
+        reply.send({ toggled: false });
+      } else {
+        await prisma.reaction.create({
+          data: {
+            emoji,
+            commentId: comment.id,
+            userId: req.user!.id,
+          },
+        });
+        reply.send({ toggled: true });
+      }
+    }
+  );
+
+  app.delete<{ Params: { id: string; emoji: string } }>(
+    "/comments/:id/reactions/:emoji",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const deleted = await prisma.reaction.deleteMany({
+        where: {
+          commentId: req.params.id,
+          userId: req.user!.id,
+          emoji: req.params.emoji,
+        },
+      });
+
+      if (deleted.count === 0) {
+        reply.status(404).send({ error: "Reaction not found" });
+        return;
+      }
+
+      reply.send({ ok: true });
+    }
+  );
+}
--- a/packages/api/src/routes/votes.ts
+++ b/packages/api/src/routes/votes.ts
@@ -0,0 +1,138 @@
+import { FastifyInstance } from "fastify";
+import { PrismaClient } from "@prisma/client";
+import { z } from "zod";
+import { verifyChallenge } from "../services/altcha.js";
+import { getCurrentPeriod, getRemainingBudget, getNextResetDate } from "../lib/budget.js";
+
+const prisma = new PrismaClient();
+
+const voteBody = z.object({
+  altcha: z.string(),
+});
+
+export default async function voteRoutes(app: FastifyInstance) {
+  app.post<{ Params: { boardSlug: string; id: string }; Body: z.infer<typeof voteBody> }>(
+    "/boards/:boardSlug/posts/:id/vote",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { slug: req.params.boardSlug } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      const post = await prisma.post.findUnique({ where: { id: req.params.id } });
+      if (!post || post.boardId !== board.id) {
+        reply.status(404).send({ error: "Post not found" });
+        return;
+      }
+
+      const body = voteBody.parse(req.body);
+      const valid = await verifyChallenge(body.altcha);
+      if (!valid) {
+        reply.status(400).send({ error: "Invalid challenge response" });
+        return;
+      }
+
+      const existing = await prisma.vote.findUnique({
+        where: { postId_voterId: { postId: post.id, voterId: req.user!.id } },
+      });
+
+      if (existing && !board.allowMultiVote) {
+        reply.status(409).send({ error: "Already voted" });
+        return;
+      }
+
+      const remaining = await getRemainingBudget(req.user!.id, board.id);
+      if (remaining <= 0) {
+        reply.status(429).send({ error: "Vote budget exhausted" });
+        return;
+      }
+
+      const period = getCurrentPeriod(board.voteBudgetReset);
+
+      if (existing && board.allowMultiVote) {
+        await prisma.vote.update({
+          where: { id: existing.id },
+          data: { weight: existing.weight + 1 },
+        });
+      } else {
+        await prisma.vote.create({
+          data: {
+            postId: post.id,
+            voterId: req.user!.id,
+            budgetPeriod: period,
+          },
+        });
+      }
+
+      await prisma.post.update({
+        where: { id: post.id },
+        data: { voteCount: { increment: 1 } },
+      });
+
+      await prisma.activityEvent.create({
+        data: {
+          type: "vote_cast",
+          boardId: board.id,
+          postId: post.id,
+          metadata: {},
+        },
+      });
+
+      reply.send({ ok: true, voteCount: post.voteCount + 1 });
+    }
+  );
+
+  app.delete<{ Params: { boardSlug: string; id: string } }>(
+    "/boards/:boardSlug/posts/:id/vote",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { slug: req.params.boardSlug } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      const vote = await prisma.vote.findUnique({
+        where: { postId_voterId: { postId: req.params.id, voterId: req.user!.id } },
+      });
+
+      if (!vote) {
+        reply.status(404).send({ error: "No vote found" });
+        return;
+      }
+
+      const weight = vote.weight;
+      await prisma.vote.delete({ where: { id: vote.id } });
+      await prisma.post.update({
+        where: { id: req.params.id },
+        data: { voteCount: { decrement: weight } },
+      });
+
+      reply.send({ ok: true });
+    }
+  );
+
+  app.get<{ Params: { boardSlug: string } }>(
+    "/boards/:boardSlug/budget",
+    { preHandler: [app.requireUser] },
+    async (req, reply) => {
+      const board = await prisma.board.findUnique({ where: { slug: req.params.boardSlug } });
+      if (!board) {
+        reply.status(404).send({ error: "Board not found" });
+        return;
+      }
+
+      const remaining = await getRemainingBudget(req.user!.id, board.id);
+      const nextReset = getNextResetDate(board.voteBudgetReset);
+
+      reply.send({
+        total: board.voteBudget,
+        remaining,
+        resetSchedule: board.voteBudgetReset,
+        nextReset: nextReset.toISOString(),
+      });
+    }
+  );
+}
--- a/packages/api/src/server.ts
+++ b/packages/api/src/server.ts
@@ -0,0 +1,93 @@
+import Fastify from "fastify";
+import cookie from "@fastify/cookie";
+import cors from "@fastify/cors";
+import rateLimit from "@fastify/rate-limit";
+import fastifyStatic from "@fastify/static";
+import { resolve } from "node:path";
+import { existsSync } from "node:fs";
+
+import securityPlugin from "./middleware/security.js";
+import authPlugin from "./middleware/auth.js";
+import { loadPlugins } from "./plugins/loader.js";
+
+import boardRoutes from "./routes/boards.js";
+import postRoutes from "./routes/posts.js";
+import voteRoutes from "./routes/votes.js";
+import commentRoutes from "./routes/comments.js";
+import reactionRoutes from "./routes/reactions.js";
+import identityRoutes from "./routes/identity.js";
+import passkeyRoutes from "./routes/passkey.js";
+import feedRoutes from "./routes/feed.js";
+import activityRoutes from "./routes/activity.js";
+import pushRoutes from "./routes/push.js";
+import privacyRoutes from "./routes/privacy.js";
+import adminAuthRoutes from "./routes/admin/auth.js";
+import adminPostRoutes from "./routes/admin/posts.js";
+import adminBoardRoutes from "./routes/admin/boards.js";
+import adminCategoryRoutes from "./routes/admin/categories.js";
+import adminStatsRoutes from "./routes/admin/stats.js";
+
+export async function createServer() {
+  const app = Fastify({
+    logger: {
+      serializers: {
+        req(req) {
+          return {
+            method: req.method,
+            url: req.url,
+          };
+        },
+      },
+    },
+  });
+
+  await app.register(cookie, { secret: process.env.TOKEN_SECRET });
+  await app.register(cors, {
+    origin: true,
+    credentials: true,
+  });
+  await app.register(rateLimit, {
+    max: 100,
+    timeWindow: "1 minute",
+  });
+
+  await app.register(securityPlugin);
+  await app.register(authPlugin);
+
+  // api routes under /api/v1
+  await app.register(async (api) => {
+    await api.register(boardRoutes);
+    await api.register(postRoutes);
+    await api.register(voteRoutes);
+    await api.register(commentRoutes);
+    await api.register(reactionRoutes);
+    await api.register(identityRoutes);
+    await api.register(passkeyRoutes);
+    await api.register(feedRoutes);
+    await api.register(activityRoutes);
+    await api.register(pushRoutes);
+    await api.register(privacyRoutes);
+    await api.register(adminAuthRoutes);
+    await api.register(adminPostRoutes);
+    await api.register(adminBoardRoutes);
+    await api.register(adminCategoryRoutes);
+    await api.register(adminStatsRoutes);
+  }, { prefix: "/api/v1" });
+
+  // serve static frontend build in production
+  const webDist = resolve(process.cwd(), "../web/dist");
+  if (process.env.NODE_ENV === "production" && existsSync(webDist)) {
+    await app.register(fastifyStatic, {
+      root: webDist,
+      wildcard: false,
+    });
+
+    app.setNotFoundHandler((_req, reply) => {
+      reply.sendFile("index.html");
+    });
+  }
+
+  await loadPlugins(app);
+
+  return app;
+}
--- a/packages/api/src/services/altcha.ts
+++ b/packages/api/src/services/altcha.ts
@@ -0,0 +1,21 @@
+import { createChallenge, verifySolution } from "altcha-lib";
+import { config } from "../config.js";
+
+export async function generateChallenge(difficulty: "normal" | "light" = "normal") {
+  const maxNumber = difficulty === "light" ? config.ALTCHA_MAX_NUMBER_VOTE : config.ALTCHA_MAX_NUMBER;
+  const challenge = await createChallenge({
+    hmacKey: config.ALTCHA_HMAC_KEY,
+    maxNumber,
+    expires: new Date(Date.now() + config.ALTCHA_EXPIRE_SECONDS * 1000),
+  });
+  return challenge;
+}
+
+export async function verifyChallenge(payload: string): Promise<boolean> {
+  try {
+    const ok = await verifySolution(payload, config.ALTCHA_HMAC_KEY);
+    return ok;
+  } catch {
+    return false;
+  }
+}
--- a/packages/api/src/services/encryption.ts
+++ b/packages/api/src/services/encryption.ts
@@ -0,0 +1,30 @@
+import { createCipheriv, createDecipheriv, createHmac, createHash, randomBytes } from "node:crypto";
+
+const IV_LEN = 12;
+const TAG_LEN = 16;
+
+export function encrypt(plaintext: string, key: Buffer): string {
+  const iv = randomBytes(IV_LEN);
+  const cipher = createCipheriv("aes-256-gcm", key, iv);
+  const encrypted = Buffer.concat([cipher.update(plaintext, "utf8"), cipher.final()]);
+  const tag = cipher.getAuthTag();
+  return Buffer.concat([iv, encrypted, tag]).toString("base64");
+}
+
+export function decrypt(encoded: string, key: Buffer): string {
+  const buf = Buffer.from(encoded, "base64");
+  const iv = buf.subarray(0, IV_LEN);
+  const tag = buf.subarray(buf.length - TAG_LEN);
+  const ciphertext = buf.subarray(IV_LEN, buf.length - TAG_LEN);
+  const decipher = createDecipheriv("aes-256-gcm", key, iv);
+  decipher.setAuthTag(tag);
+  return decipher.update(ciphertext) + decipher.final("utf8");
+}
+
+export function blindIndex(value: string, key: Buffer): string {
+  return createHmac("sha256", key).update(value.toLowerCase()).digest("hex");
+}
+
+export function hashToken(token: string): string {
+  return createHash("sha256").update(token).digest("hex");
+}
--- a/packages/api/src/services/push.ts
+++ b/packages/api/src/services/push.ts
@@ -0,0 +1,71 @@
+import webpush from "web-push";
+import { PrismaClient } from "@prisma/client";
+import { config } from "../config.js";
+import { decrypt } from "./encryption.js";
+import { masterKey } from "../config.js";
+
+const prisma = new PrismaClient();
+
+if (config.VAPID_PUBLIC_KEY && config.VAPID_PRIVATE_KEY && config.VAPID_CONTACT) {
+  webpush.setVapidDetails(
+    config.VAPID_CONTACT,
+    config.VAPID_PUBLIC_KEY,
+    config.VAPID_PRIVATE_KEY
+  );
+}
+
+interface PushPayload {
+  title: string;
+  body: string;
+  url?: string;
+  tag?: string;
+}
+
+export async function sendNotification(sub: { endpoint: string; keysP256dh: string; keysAuth: string }, payload: PushPayload) {
+  try {
+    await webpush.sendNotification(
+      {
+        endpoint: decrypt(sub.endpoint, masterKey),
+        keys: {
+          p256dh: decrypt(sub.keysP256dh, masterKey),
+          auth: decrypt(sub.keysAuth, masterKey),
+        },
+      },
+      JSON.stringify(payload)
+    );
+    return true;
+  } catch (err: any) {
+    if (err.statusCode === 404 || err.statusCode === 410) {
+      return false;
+    }
+    throw err;
+  }
+}
+
+export async function notifyPostSubscribers(postId: string, event: PushPayload) {
+  const subs = await prisma.pushSubscription.findMany({ where: { postId } });
+  const failed: string[] = [];
+
+  for (const sub of subs) {
+    const ok = await sendNotification(sub, event);
+    if (!ok) failed.push(sub.id);
+  }
+
+  if (failed.length > 0) {
+    await prisma.pushSubscription.deleteMany({ where: { id: { in: failed } } });
+  }
+}
+
+export async function notifyBoardSubscribers(boardId: string, event: PushPayload) {
+  const subs = await prisma.pushSubscription.findMany({ where: { boardId, postId: null } });
+  const failed: string[] = [];
+
+  for (const sub of subs) {
+    const ok = await sendNotification(sub, event);
+    if (!ok) failed.push(sub.id);
+  }
+
+  if (failed.length > 0) {
+    await prisma.pushSubscription.deleteMany({ where: { id: { in: failed } } });
+  }
+}
--- a/packages/api/tsconfig.json
+++ b/packages/api/tsconfig.json
@@ -0,0 +1,8 @@
+{
+  "extends": "../../tsconfig.json",
+  "compilerOptions": {
+    "outDir": "dist",
+    "rootDir": "src"
+  },
+  "include": ["src/**/*"]
+}