This MR fixes critical authentication issues that prevented login on localhost and improves the developer experience with consolidated rebuild scripts and a working help modal keyboard shortcut. (#5)

# Fix authentication issues and improve developer experience

## Summary

This MR fixes critical authentication issues that prevented login on localhost and improves the developer experience with consolidated rebuild scripts and a working help modal keyboard shortcut.

## Problems Fixed

### 1. Authentication Issues
- **UntrustedHost Error**: NextAuth v5 was rejecting localhost requests with "UntrustedHost: Host must be trusted" error
- **Cookie Prefix Errors**: Cookies were being set with `__Host-` and `__Secure-` prefixes on HTTP (localhost), causing browser rejection
- **MissingCSRF Error**: CSRF token cookies were not being set correctly due to cookie configuration issues

### 2. Help Modal Keyboard Shortcut
- **Shift+? not working**: The help modal keyboard shortcut was not detecting the question mark key correctly

### 3. Developer Experience
- **Multiple rebuild scripts**: Had several overlapping rebuild scripts that were confusing
- **Unused code**: Removed unused `useSecureCookies` variable and misleading comments

## Changes Made

### Authentication Fixes (`lib/auth.ts`)
- Set `trustHost: true` to fix UntrustedHost error (required for NextAuth v5)
- Added explicit cookie configuration for HTTP (localhost) to prevent prefix errors:
  - Cookies use `secure: false` for HTTP
  - Cookie names without prefixes for HTTP
  - Let Auth.js defaults handle HTTPS (with prefixes and Secure flag)
- Removed unused `useSecureCookies` variable
- Simplified debug logging

### Help Modal Fix (`components/HelpModal.tsx`)
- Fixed keyboard shortcut detection to properly handle Shift+? (Shift+/)
- Updated help text to show correct shortcut (Shift+? instead of Ctrl+?)

### Developer Scripts
- **Consolidated rebuild scripts**: Merged `CLEAN_REBUILD.sh`, `FIX_AND_RESTART.sh`, and `start-server.sh` into single `rebuild.sh`
- **Added REBUILD.md**: Documentation for rebuild process
- Removed redundant script files

### Code Cleanup
- Removed unused `useSecureCookies` variable from `lib/auth.ts`
- Removed misleading comment from `app/api/auth/[...nextauth]/route.ts`
- Cleaned up verbose debug logging

## Technical Details

### Cookie Configuration
The fix works by explicitly configuring cookies for HTTP environments:
- **HTTP (localhost)**: Cookies without prefixes, `secure: false`
- **HTTPS (production)**: Let Auth.js defaults handle (prefixes + Secure flag)

This prevents NextAuth v5 from auto-detecting HTTPS from proxy headers and incorrectly adding cookie prefixes.

### Keyboard Shortcut
The question mark key requires Shift+/ on most keyboards. The fix now properly detects:
- `event.shiftKey && event.key === "/"`
- `event.key === "?"` (fallback)
- `event.code === "Slash" && event.shiftKey` (additional fallback)

## Testing

- ✅ Login works on localhost (http://localhost:3000)
- ✅ No cookie prefix errors in browser console
- ✅ No UntrustedHost errors in server logs
- ✅ Help modal opens/closes with Shift+?
- ✅ Rebuild script works in both dev and prod modes

## Files Changed

### Modified
- `lib/auth.ts` - Authentication configuration fixes
- `components/HelpModal.tsx` - Keyboard shortcut fix
- `app/api/auth/[...nextauth]/route.ts` - Removed misleading comment

### Added
- `rebuild.sh` - Consolidated rebuild script
- `REBUILD.md` - Rebuild documentation

## Migration Notes

No database migrations or environment variable changes required. The fix works with existing configuration.

## Related Issues

Fixes authentication issues preventing local development and testing.

Reviewed-on: #5

app/api/photos/upload-multiple/route.ts

@@ -1,12 +1,39 @@
+/**
+ * Multiple Photo Upload Endpoint
+ * 
+ * POST /api/photos/upload-multiple
+ * 
+ * Uploads multiple photos in a single request. Supports both file uploads and URL-based uploads.
+ * 
+ * This endpoint is used by the upload page for batch uploads. It processes multiple photos
+ * in parallel and sends email notifications for all successfully uploaded photos.
+ * 
+ * Form Data:
+ * - photo_{index}_file: File object (optional, if using file upload)
+ * - photo_{index}_url: URL string (optional, if using URL upload)
+ * - photo_{index}_answerName: Answer name (required)
+ * - photo_{index}_points: Points value (optional, defaults to 1)
+ * - photo_{index}_penaltyEnabled: "true" or "false" (optional)
+ * - photo_{index}_penaltyPoints: Penalty points (optional)
+ * - photo_{index}_maxAttempts: Maximum attempts (optional)
+ * - count: Number of photos being uploaded
+ * 
+ * Related endpoints:
+ * - POST /api/photos/upload - Single photo upload (supports both file and URL)
+ */
 import { NextRequest, NextResponse } from "next/server"
 import { auth } from "@/lib/auth"
 import { prisma } from "@/lib/prisma"
 import { sendNewPhotoEmail } from "@/lib/email"
+import { logger } from "@/lib/logger"
 import { writeFile } from "fs/promises"
 import { join } from "path"
 import { existsSync, mkdirSync } from "fs"
 import { createHash } from "crypto"
 
+// Mark this route as dynamic to prevent build-time data collection
+export const dynamic = "force-dynamic"
+
 export async function POST(req: NextRequest) {
   try {
     const session = await auth()
@@ -204,7 +231,11 @@ export async function POST(req: NextRequest) {
               photo.id,
               photo.uploader.name
             ).catch((err) => {
-              console.error("Failed to send email to:", user.email, "for photo:", photo.id, err)
+              logger.error("Failed to send email", {
+                email: user.email,
+                photoId: photo.id,
+                error: err instanceof Error ? err : new Error(String(err)),
+              })
             })
           )
         )
@@ -216,7 +247,9 @@ export async function POST(req: NextRequest) {
       { status: 201 }
     )
   } catch (error) {
-    console.error("Error uploading photos:", error)
+    logger.error("Error uploading photos", {
+      error: error instanceof Error ? error : new Error(String(error)),
+    })
     return NextResponse.json(
       { error: "Internal server error" },
       { status: 500 }