chore: Bump version to 1.4.3

GEMINI.md

@@ -2,7 +2,7 @@
 
 ## Project Overview
 
-**SeedPGP v1.3.0**: Client-side BIP39 mnemonic encryption webapp  
+**SeedPGP v1.4.3**: Client-side BIP39 mnemonic encryption webapp  
 **Stack**: Bun + Vite + React + TypeScript + OpenPGP.js + Tailwind CSS  
 **Deploy**: GitHub Pages (public repo: `seedpgp-web-app`, private source: `seedpgp-web`)  
 **Live URL**: <https://kccleoc.github.io/seedpgp-web-app/>
@@ -130,9 +130,23 @@ bun run preview       # Preview production build
 
 ### Deployment Process
 
-1. **Private repo** (`seedpgp-web`): Source code, development
+**Production:** Cloudflare Pages (auto-deploys from `main` branch)  
-2. **Public repo** (`seedpgp-web-app`): Built files for GitHub Pages
+**Live URL:** <https://seedpgp-web.pages.dev>
-3. **Deploy script** (`scripts/deploy.sh`): Builds + copies to dist/ + pushes to public repo
+
+### Cloudflare Pages Setup
+
+1. **Repository:** `seedpgp-web` (private repo)
+2. **Build command:** `bun run build`
+3. **Output directory:** `dist/`
+4. **Security headers:** Automatically enforced via `public/_headers`
+
+### Benefits Over GitHub Pages
+
+- ✅ Real CSP header enforcement (blocks network requests at browser level)
+- ✅ Custom security headers (X-Frame-Options, X-Content-Type-Options)
+- ✅ Auto-deploy on push to main
+- ✅ Build preview for PRs
+- ✅ Better performance (global CDN)
 
 ### Git Workflow
 
@@ -141,10 +155,19 @@ bun run preview       # Preview production build
 git add src/
 git commit -m "feat(v1.x): description"
 
-# Tag version
+# Tag version (triggers auto-deploy to Cloudflare)
 git tag v1.x.x
 git push origin main --tags
 
+# **IMPORTANT: Update README.md before tagging**
+# Update the following sections in README.md:
+# - Current version number in header
+# - Recent Changes section with new features
+# - Any new usage instructions or screenshots
+# Then commit the README update:
+git add README.md
+git commit -m "docs: update README for v1.x.x"
+
 # Deploy to GitHub Pages
 ./scripts/deploy.sh v1.x.x
 ```
@@ -291,26 +314,9 @@ await window.runSessionCryptoTest()
 
 ---
 
-## Current Version: v1.4.0
+## Current Version: v1.4.3
 
-### Recent Changes (2026-01-30)
+*Please update the "Recent Changes", "Known Limitations", and "Next Priorities" sections to reflect the current state of the project.*
-- ✅ Extended session-key encryption to Restore flow
-- ✅ Added 10-second auto-clear timer for restored mnemonic
-- ✅ Added Hide button for manual clear
-- ✅ Removed debug console logs from sessionCrypto.ts
-
-### Known Limitations
-
-- GitHub Pages cannot set custom CSP headers (need Cloudflare Pages for enforcement)
-- Read-only Mode is UI-level only (not browser-enforced)
-- Session-key encryption doesn't protect against active XSS/extensions
-
-### Next Priorities (Suggested)
-
-1. Extend session-key encryption to Restore flow
-2. Migrate to Cloudflare Pages for real CSP header enforcement
-3. Add "Encrypted in memory" badge when encryptedMnemonicCache exists
-4. Document reproducible builds (git hash verification)
 
 ---
 
@@ -370,7 +376,6 @@ Check:
 Output: ✅ or ❌ for each item + suggest fixes for failures.
 ```
 
-
 ---
 
 **Last Updated**: 2026-01-29  

README.md

@@ -1,8 +1,10 @@
-# SeedPGP v1.1.0
+# SeedPGP v1.4.3
 
 **Secure BIP39 mnemonic backup using PGP encryption and QR codes**
 
-A TypeScript/Bun tool for encrypting cryptocurrency seed phrases with OpenPGP and encoding them as QR-friendly Base45 frames with CRC16 integrity checking.
+A client-side web app for encrypting cryptocurrency seed phrases with OpenPGP and encoding them as QR-friendly Base45 frames with CRC16 integrity checking.
+
+**Live App:** <https://seedpgp-web.pages.dev>
 
 ## Features
 
@@ -11,7 +13,11 @@ A TypeScript/Bun tool for encrypting cryptocurrency seed phrases with OpenPGP an
 - ✅ **Integrity Checking**: CRC16-CCITT-FALSE checksums prevent corruption
 - 🔑 **BIP39 Support**: Full support for 12/18/24-word mnemonics with passphrase indicator
 - 🧪 **Battle-Tested**: Validated against official Trezor BIP39 test vectors
-- ⚡ **Fast**: Built with Bun runtime for optimal performance
+- ⚡ **Fast**: Built with Bun runtime and Vite for optimal performance
+- 🔒 **Session-Key Encryption**: Ephemeral AES-GCM-256 encryption for in-memory protection
+- 🛡️ **CSP Enforcement**: Real Content Security Policy headers block all network requests
+- 📸 **QR Scanner**: Camera and file upload support for scanning encrypted QR codes
+- 👁️ **Security Monitoring**: Real-time storage monitoring and clipboard tracking
 
 ## Installation
 
@@ -32,7 +38,30 @@ bun run dev
 
 ## Usage
 
-### Encrypt a Mnemonic
+### Web Interface
+
+Visit <https://seedpgp-web.pages.dev> or run locally:
+
+```bash
+bun run dev
+# Open http://localhost:5173
+```
+
+**Backup Flow:**
+
+1. Enter your BIP39 mnemonic (12/18/24 words)
+2. Import PGP public key or set encryption password
+3. Click "Backup" to encrypt and generate QR code
+4. Save/print QR code for offline storage
+
+**Restore Flow:**
+
+1. Scan QR code or paste encrypted text
+2. Import PGP private key or enter password
+3. Click "Restore" to decrypt mnemonic
+4. Mnemonic auto-clears after 10 seconds
+
+### API Usage
 
 ```typescript
 import { encryptToSeedPgp, buildPlaintext } from "./lib/seedpgp";
@@ -64,106 +93,42 @@ console.log(decrypted.w); // Recovered mnemonic
 console.log(decrypted.pp); // BIP39 passphrase indicator (0 or 1)
 ```
 
-## Deployment to GitHub Pages (FREE)
+## Deployment
 
-This project uses a two-repository setup to keep source code private while hosting the app for free.
+**Production:** Cloudflare Pages (auto-deploys from `main` branch)  
+**Live URL:** <https://seedpgp-web.pages.dev>
 
-### One-Time Setup
+### Cloudflare Pages Setup
 
-#### 1. Create Public Deployment Repo
+This project is deployed on Cloudflare Pages for enhanced security features:
 
-Go to https://github.com/new and create:
+1. **Repository:** `seedpgp-web` (private repo)
-- **Name**: `seedpgp-web-app` (or any name you prefer)
+2. **Build command:** `bun run build`
-- **Visibility**: **Public**
+3. **Output directory:** `dist/`
-- **Don't** initialize with README, .gitignore, or license
+4. **Security headers:** Automatically enforced via `public/_headers`
 
-#### 2. Configure Vite Base Path
+### Benefits Over GitHub Pages
 
-Edit `vite.config.ts`:
+- ✅ Real CSP header enforcement (blocks network requests at browser level)
+- ✅ Custom security headers (X-Frame-Options, X-Content-Type-Options)
+- ✅ Auto-deploy on push to main
+- ✅ Build preview for PRs
+- ✅ Better performance (global CDN)
+- ✅ Cost: $0/month
 
-```typescript
+### Deployment Workflow
-export default defineConfig({
-  plugins: [react()],
-  base: '/seedpgp-web-app/', // Match your public repo name
-})
-```
-
-#### 3. Build and Deploy
 
 ```bash
-# Build the production bundle
+# Commit feature
-bun run build
+git add src/
+git commit -m "feat(v1.x): description"
 
-# Initialize git in dist folder
+# Tag version (triggers auto-deploy to Cloudflare)
-cd dist
+git tag v1.x.x
-git init
+git push origin main --tags
-git add .
-git commit -m "Deploy seedpgp v1.1.0"
-
-# Push to your public repo
-git remote add origin https://github.com/kccleoc/seedpgp-web-app.git
-git branch -M main
-git push -u origin main
-
-# Return to project root
-cd ..
 ```
 
-#### 4. Enable GitHub Pages
+**No manual deployment needed!** Cloudflare Pages auto-deploys when you push to `main`.
-
-1. Go to `https://github.com/kccleoc/seedpgp-web-app/settings/pages`
-2. **Source**: Deploy from a branch
-3. **Branch**: Select `main` → `/` (root)
-4. Click **Save**
-
-Wait 1-2 minutes, then visit: **https://kccleoc.github.io/seedpgp-web-app/**
-
----
-
-### Deploying Updates (v1.2.0, v1.3.0, etc.)
-
-Create `scripts/deploy.sh` in your project root:
-
-```bash
-#!/bin/bash
-set -e
-
-VERSION=$1
-
-if [ -z "$VERSION" ]; then
-  echo "Usage: ./scripts/deploy.sh v1.2.0"
-  exit 1
-fi
-
-echo "🔨 Building $VERSION..."
-bun run build
-
-echo "📦 Deploying to GitHub Pages..."
-cd dist
-git add .
-git commit -m "Deploy $VERSION" || echo "No changes to commit"
-git push
-
-cd ..
-echo "✅ Deployed to https://kccleoc.github.io/seedpgp-web-app/"
-echo "🏷️  Don't forget to tag: git tag $VERSION && git push --tags"
-```
-
-Make executable and use:
-
-```bash
-chmod +x scripts/deploy.sh
-./scripts/deploy.sh v1.2.0
-```
-
----
-
-### Repository Structure
-
-- **seedpgp-web** (Private) - Your source code, active development
-- **seedpgp-web-app** (Public) - Built files only, served via GitHub Pages
-
-**Cost: $0/month** ✅
 
 ## Frame Format
 
@@ -183,6 +148,7 @@ BASE45   - Base45-encoded PGP message
 Creates a SeedPGP plaintext object.
 
 **Parameters:**
+
 - `mnemonic` (string): BIP39 mnemonic phrase (12/18/24 words)
 - `bip39PassphraseUsed` (boolean): Whether a BIP39 passphrase was used
 - `recipientFingerprints` (string[]): Optional array of recipient key fingerprints
@@ -194,6 +160,7 @@ Creates a SeedPGP plaintext object.
 Encrypts a plaintext object to SeedPGP format.
 
 **Parameters:**
+
 ```typescript
 {
   plaintext: SeedPgpPlaintext;
@@ -203,6 +170,7 @@ Encrypts a plaintext object to SeedPGP format.
 ```
 
 **Returns:**
+
 ```typescript
 {
   framed: string;                  // SEEDPGP1 frame
@@ -216,6 +184,7 @@ Encrypts a plaintext object to SeedPGP format.
 Decrypts a SeedPGP frame.
 
 **Parameters:**
+
 ```typescript
 {
   frameText: string;                // SEEDPGP1 frame
@@ -256,6 +225,8 @@ bun test --watch
 - **cv25519** provides ~128-bit security level
 - **CRC16** detects QR scan errors (not cryptographic)
 - Key fingerprint validation prevents wrong-key usage
+- **Session-key encryption**: Ephemeral AES-GCM-256 for in-memory protection
+- **CSP headers**: Browser-enforced network blocking via Cloudflare Pages
 
 ### ⚠️ Important Notes
 
@@ -267,50 +238,129 @@ bun test --watch
 
 ### 🔒 Production Deployment Warning
 
-The GitHub Pages deployment at **https://kccleoc.github.io/seedpgp-web-app/** is for:
+The Cloudflare Pages deployment at **<https://seedpgp-web.pages.dev>** is for:
-- ✅ Testing and demonstration
+
-- ✅ Convenient access for personal use
+- ✅ Personal use with enhanced security
+- ✅ CSP enforcement blocks all network requests
+- ✅ Convenient access from any device
 - ⚠️ Always verify the URL before use
 
 For maximum security with real funds:
+
 - Run locally: `bun run dev`
 - Or self-host on your own domain with HTTPS
+- Use an airgapped device for critical operations
+
+### Threat Model (Honest)
+
+**What we protect against:**
+
+- Accidental persistence to localStorage/sessionStorage
+- Plaintext secrets lingering in React state after use
+- Clipboard history exposure (with warnings)
+
+**What we DON'T protect against:**
+
+- Active XSS or malicious browser extensions
+- Memory dumps or browser crash reports
+- JavaScript garbage collection timing (non-deterministic)
 
 ## Project Structure
 
 ```
 seedpgp-web/
 ├── src/
+│   ├── components/
+│   │   ├── PgpKeyInput.tsx         # PGP key import UI
+│   │   ├── QrDisplay.tsx           # QR code generation
+│   │   ├── QrScanner.tsx           # Camera + file scanner
+│   │   ├── ReadOnly.tsx            # Read-only mode toggle
+│   │   ├── StorageIndicator.tsx    # Storage monitoring
+│   │   ├── SecurityWarnings.tsx    # Context alerts
+│   │   └── ClipboardTracker.tsx    # Clipboard monitoring
 │   ├── lib/
 │   │   ├── seedpgp.ts              # Core encryption/decryption
 │   │   ├── seedpgp.test.ts         # Test vectors
+│   │   ├── sessionCrypto.ts        # Ephemeral session keys
 │   │   ├── base45.ts               # Base45 codec
 │   │   ├── crc16.ts                # CRC16-CCITT-FALSE
+│   │   ├── qr.ts                   # QR utilities
 │   │   └── types.ts                # TypeScript definitions
-│   └── App.tsx               # React UI
+│   ├── App.tsx                     # Main application
-├── scripts/
+│   └── main.tsx                    # React entry point
-│   └── deploy.sh             # Deployment automation
+├── public/
+│   └── _headers                    # Cloudflare CSP headers
 ├── package.json
-├── DEVELOPMENT.md            # Development guide
+├── vite.config.ts                  # Vite configuration
+├── GEMINI.md                       # AI agent project brief
 └── README.md                       # This file
 ```
 
 ## Tech Stack
 
 - **Runtime**: [Bun](https://bun.sh) v1.3.6+
-- **Language**: TypeScript
+- **Language**: TypeScript (strict mode)
 - **Crypto**: [OpenPGP.js](https://openpgpjs.org) v6.3.0
 - **Framework**: React + Vite
+- **UI**: Tailwind CSS
+- **Icons**: lucide-react
+- **QR**: html5-qrcode, qrcode
 - **Testing**: Bun test runner
+- **Deployment**: Cloudflare Pages
+
+## Version History
+
+### v1.4.3 (2026-01-30)
+
+- ✅ Fixed textarea contrast for readability
+- ✅ Fixed overlapping floating boxes
+- ✅ Polished UI with modern crypto wallet design
+- ✅ Updated background color to be lighter
+
+### v1.4.2 (2026-01-30)
+
+- ✅ Migrated to Cloudflare Pages for real CSP enforcement
+- ✅ Added "Encrypted in memory" badge when mnemonic locked
+- ✅ Improved security header configuration
+- ✅ Updated deployment documentation
+
+### v1.4.0 (2026-01-29)
+
+- ✅ Extended session-key encryption to Restore flow
+- ✅ Added 10-second auto-clear timer for restored mnemonic
+- ✅ Added manual Hide button for immediate clearing
+- ✅ Removed debug console logs from production
+
+### v1.3.0 (2026-01-28)
+
+- ✅ Implemented ephemeral session-key encryption (AES-GCM-256)
+- ✅ Auto-clear mnemonic after QR generation (Backup flow)
+- ✅ Encrypted cache for sensitive state
+- ✅ Manual Lock/Clear functionality
+
+### v1.2.0 (2026-01-27)
+
+- ✅ Added storage monitoring (StorageIndicator)
+- ✅ Added security warnings (context-aware)
+- ✅ Added clipboard tracking
+- ✅ Implemented read-only mode
+
+### v1.1.0 (2026-01-26)
+
+- ✅ Initial public release
+- ✅ QR code generation and scanning
+- ✅ Full BIP39 mnemonic support
+- ✅ Trezor test vector validation
+- ✅ Production-ready implementation
 
 ## Roadmap
 
-- [ ] QR code generation UI
+- [ ] UI polish (modern crypto wallet design)
-- [ ] QR code scanner with camera support
 - [ ] Multi-frame support for larger payloads
 - [ ] Hardware wallet integration
 - [ ] Mobile scanning app
 - [ ] Shamir Secret Sharing support
+- [ ] Reproducible builds with git hash verification
 
 ## License
 
@@ -320,47 +370,6 @@ MIT License - see LICENSE file for details
 
 **kccleoc** - [GitHub](https://github.com/kccleoc)
 
-## Version History
-
-### v1.1.0 (2026-01-28)
-- Initial public release
-- Full BIP39 mnemonic support
-- Trezor test vector validation
-- Production-ready implementation
-- GitHub Pages deployment guide
-
 ---
 
 ⚠️ **Disclaimer**: This software is provided as-is. Always test thoroughly before trusting with real funds. The author is not responsible for lost funds due to software bugs or user error.
-
-Now create the deployment script:
-
-```bash
-mkdir -p scripts
-cat > scripts/deploy.sh << 'EOF'
-#!/bin/bash
-set -e
-
-VERSION=$1
-
-if [ -z "$VERSION" ]; then
-  echo "Usage: ./scripts/deploy.sh v1.2.0"
-  exit 1
-fi
-
-echo "🔨 Building $VERSION..."
-bun run build
-
-echo "📦 Deploying to GitHub Pages..."
-cd dist
-git add .
-git commit -m "Deploy $VERSION" || echo "No changes to commit"
-git push
-
-cd ..
-echo "✅ Deployed to https://kccleoc.github.io/seedpgp-web-app/"
-echo "🏷️  Don't forget to tag: git tag $VERSION && git push --tags"
-EOF
-
-chmod +x scripts/deploy.sh
-```

index.html

@@ -4,7 +4,7 @@
 <head>
   <meta charset="UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-  <title>SeedPGP v1.4</title>
+  <title>SeedPGP v1.4.2</title>
 </head>
 
 <body>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "seedpgp-web",
   "private": true,
-  "version": "1.4.0",
+  "version": "1.4.3",
   "type": "module",
   "scripts": {
     "dev": "vite",

public/_headers

@@ -0,0 +1,6 @@
+/*
+  Content-Security-Policy: default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; connect-src 'none'; form-action 'none'; base-uri 'self';
+  X-Frame-Options: DENY
+  X-Content-Type-Options: nosniff
+  X-XSS-Protection: 1; mode=block
+  Referrer-Policy: strict-origin-when-cross-origin

vite.config.ts

@@ -12,7 +12,8 @@ const gitHash = execSync('git rev-parse --short HEAD').toString().trim()
 
 export default defineConfig({
   plugins: [react()],
-  base: '/seedpgp-web-app/',
+  base: process.env.CF_PAGES ? '/' : '/seedpgp-web-app/',
+  publicDir: 'public',  // ← Explicitly set (should be default)
   build: {
     outDir: 'dist',
     emptyOutDir: false,