feat: Add password reset endpoints for super-admins

- POST /api/admin/users/:userId/reset-password
- POST /api/admin/reset-password-by-email

src/routes/admin.ts

@@ -412,6 +412,75 @@ adminRouter.post("/organizations/:id/remove-free", requireSuperAdmin, async (ctx
   ctx.response.body = { message: `Freistellung aufgehoben, ${trialDays} Tage Trial gesetzt` };
 });
 
+// Reset user password (Super Admin only)
+adminRouter.post("/users/:userId/reset-password", requireSuperAdmin, async (ctx) => {
+  const userId = ctx.params.userId;
+  const body = await ctx.request.body.json();
+  const { newPassword } = body;
+  
+  if (!newPassword || newPassword.length < 8) {
+    throw new AppError("Neues Passwort erforderlich (min. 8 Zeichen)", 400);
+  }
+  
+  // Check if user exists
+  const user = await queryOne<{ id: string; email: string }>(
+    `SELECT id, email FROM users WHERE id = $1`,
+    [userId]
+  );
+  
+  if (!user) {
+    throw new AppError("Benutzer nicht gefunden", 404);
+  }
+  
+  // Hash and update password
+  const { hashPassword } = await import("../utils/auth.ts");
+  const passwordHash = await hashPassword(newPassword);
+  
+  await execute(
+    `UPDATE users SET password_hash = $1 WHERE id = $2`,
+    [passwordHash, userId]
+  );
+  
+  ctx.response.body = { 
+    message: `Passwort für ${user.email} zurückgesetzt`,
+    userId: user.id
+  };
+});
+
+// Reset password by email (Super Admin only)
+adminRouter.post("/reset-password-by-email", requireSuperAdmin, async (ctx) => {
+  const body = await ctx.request.body.json();
+  const { email, newPassword } = body;
+  
+  if (!email || !newPassword || newPassword.length < 8) {
+    throw new AppError("Email und neues Passwort erforderlich (min. 8 Zeichen)", 400);
+  }
+  
+  // Check if user exists
+  const user = await queryOne<{ id: string; email: string }>(
+    `SELECT id, email FROM users WHERE email = $1`,
+    [email]
+  );
+  
+  if (!user) {
+    throw new AppError("Benutzer nicht gefunden", 404);
+  }
+  
+  // Hash and update password
+  const { hashPassword } = await import("../utils/auth.ts");
+  const passwordHash = await hashPassword(newPassword);
+  
+  await execute(
+    `UPDATE users SET password_hash = $1 WHERE id = $2`,
+    [passwordHash, user.id]
+  );
+  
+  ctx.response.body = { 
+    message: `Passwort für ${user.email} zurückgesetzt`,
+    userId: user.id
+  };
+});
+
 // List all organizations with subscription info
 adminRouter.get("/subscriptions", requireSuperAdmin, async (ctx) => {
   const filter = ctx.request.url.searchParams.get("filter"); // all, trial, active, paused, expired