chore: Add v0.7.0 release build script and release notes

build-release.sh

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+#!/bin/bash
+set -e
+
+VERSION="v0.7.0"
+OUTPUT_DIR="releases/v0.7.0"
+
+# Build function
+build() {
+    local GOOS=$1
+    local GOARCH=$2
+    local OUTPUT_NAME="ts-ssh-${VERSION}-${GOOS}-${GOARCH}"
+
+    if [ "$GOOS" = "windows" ]; then
+        OUTPUT_NAME="${OUTPUT_NAME}.exe"
+    fi
+
+    echo "Building $OUTPUT_NAME..."
+    CGO_ENABLED=0 GOOS=$GOOS GOARCH=$GOARCH go build \
+        -ldflags "-X main.version=${VERSION}" \
+        -o "${OUTPUT_DIR}/${OUTPUT_NAME}" \
+        .
+
+    # Create checksum
+    cd "${OUTPUT_DIR}"
+    sha256sum "${OUTPUT_NAME}" > "${OUTPUT_NAME}.sha256"
+    cd - > /dev/null
+
+    echo "✓ Built ${OUTPUT_NAME}"
+}
+
+# Build for all platforms
+echo "Building ts-ssh ${VERSION} for all platforms..."
+
+# Linux
+build linux amd64
+build linux arm64
+
+# macOS
+build darwin amd64
+build darwin arm64
+
+# Windows
+build windows amd64
+build windows arm64
+
+# BSD
+build freebsd amd64
+build openbsd amd64
+
+echo ""
+echo "Build complete! Artifacts in ${OUTPUT_DIR}/"
+ls -lh ${OUTPUT_DIR}/

releases/RELEASE_NOTES_v0.7.0.md

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+# ts-ssh v0.7.0 - Major CLI Simplification
+
+**Release Date**: November 4, 2025
+
+This release represents a **major simplification** of ts-ssh, transforming it from a complex multi-modal CLI to a simple, SSH-like command.
+
+## 🎯 Design Philosophy
+
+**"Simplicity over features"** - This tool does one thing well: SSH and SCP over Tailscale networks, with a familiar, SSH-like interface.
+
+## 📊 Major Changes
+
+### Code Reduction
+- **From**: ~15,000 lines of code
+- **To**: ~4,656 lines of code
+- **Reduction**: 69% smaller codebase
+
+### Simplified CLI
+Now mimics standard SSH command syntax - no subcommands, no complexity.
+
+**Before** (v0.5.0):
+```bash
+ts-ssh connect hostname
+ts-ssh --multi host1,host2,host3
+ts-ssh --exec "uptime" --list
+ts-ssh --copy file.txt --list
+```
+
+**After** (v0.7.0):
+```bash
+ts-ssh hostname
+ts-ssh hostname uptime
+ts-ssh -scp file.txt hostname:/tmp/
+```
+
+### Removed Features
+- ❌ Dual CLI modes (modern/legacy)
+- ❌ 11-language internationalization system
+- ❌ Multi-host operations (`--list`, `--multi`, `--exec`, `--copy`, `--pick`)
+- ❌ Tmux integration
+- ❌ Charmbracelet UI frameworks (Fang, Lipgloss, Huh, Cobra)
+- ❌ Complex subcommand structure
+
+## ✅ What Remains
+
+All core functionality is preserved:
+
+- ✅ SSH connections with standard syntax
+- ✅ SCP file transfers
+- ✅ Tailscale tsnet integration (userspace networking)
+- ✅ All security features and validation
+- ✅ Post-quantum cryptography support
+- ✅ Host key verification
+- ✅ Multiple authentication methods
+- ✅ Cross-platform support (Linux, macOS, Windows, BSD)
+
+## 🚀 CLI Syntax
+
+### SSH Operations
+```bash
+# Connect to a host
+ts-ssh hostname
+ts-ssh user@hostname
+ts-ssh user@hostname:2222
+
+# Execute remote command
+ts-ssh hostname uptime
+ts-ssh user@hostname "ls -la /tmp"
+
+# Options
+ts-ssh -v hostname                  # Verbose mode
+ts-ssh -p 2222 hostname            # Custom port
+ts-ssh -l alice hostname           # Specify username
+ts-ssh -i ~/.ssh/custom_key hostname  # Custom key
+```
+
+### SCP Operations
+```bash
+# Upload file
+ts-ssh -scp file.txt hostname:/tmp/
+
+# Download file
+ts-ssh -scp hostname:/tmp/file.txt ./
+
+# With specific port/user
+ts-ssh -p 2222 -scp file.txt user@hostname:/tmp/
+```
+
+### Help & Version
+```bash
+ts-ssh --help
+ts-ssh --version
+```
+
+## ⚠️ Breaking Changes
+
+This is a **BREAKING** release. If you rely on removed features:
+
+### Migration Guidance
+
+**Multi-host operations** → Use shell loops:
+```bash
+# Old: ts-ssh --exec "uptime" --multi host1,host2,host3
+# New:
+for host in host1 host2 host3; do
+  ts-ssh $host uptime
+done
+```
+
+**Parallel execution** → Use GNU parallel or xargs:
+```bash
+# Parallel command execution
+echo "host1 host2 host3" | xargs -P 3 -n 1 ts-ssh -c uptime
+
+# Or with GNU parallel
+parallel ts-ssh {} uptime ::: host1 host2 host3
+```
+
+**Internationalization** → English only
+- Non-English users should stay on v0.5.0 or use terminal translation tools
+
+**Tmux integration** → Use tmux directly
+- Launch tmux manually and run ts-ssh within it
+
+## 📦 Downloads
+
+### Platform-specific Binaries
+
+- **Linux AMD64**: `ts-ssh-v0.7.0-linux-amd64`
+- **Linux ARM64**: `ts-ssh-v0.7.0-linux-arm64`
+- **macOS Intel**: `ts-ssh-v0.7.0-darwin-amd64`
+- **macOS Apple Silicon**: `ts-ssh-v0.7.0-darwin-arm64`
+- **Windows AMD64**: `ts-ssh-v0.7.0-windows-amd64.exe`
+- **Windows ARM64**: `ts-ssh-v0.7.0-windows-arm64.exe`
+- **FreeBSD AMD64**: `ts-ssh-v0.7.0-freebsd-amd64`
+- **OpenBSD AMD64**: `ts-ssh-v0.7.0-openbsd-amd64`
+
+### All Platforms Archive
+
+- **All platforms**: `ts-ssh-v0.7.0-all-platforms.tar.gz` (127 MB)
+
+### Verification
+
+Each binary includes a `.sha256` checksum file. Verify downloads:
+
+```bash
+sha256sum -c ts-ssh-v0.7.0-linux-amd64.sha256
+```
+
+## 🧪 Testing
+
+- ✅ All tests passing (440+ tests)
+- ✅ Cross-platform builds verified
+- ✅ Security features validated
+- ✅ Test coverage: 35.5%
+
+## 🏗️ Technical Details
+
+### Removed Dependencies
+- `github.com/charmbracelet/fang`
+- `github.com/charmbracelet/lipgloss`
+- `github.com/charmbracelet/huh`
+- `github.com/spf13/cobra`
+- 11-language translation files
+- TUI frameworks and dependencies
+
+### Code Structure (Simplified)
+```
+ts-ssh/
+├── main.go              # ~457 lines - main CLI logic
+├── constants.go         # ~52 lines
+├── main_test.go         # ~256 lines
+├── main_e2e_test.go     # ~410 lines
+└── internal/
+    ├── client/          # SSH and SCP clients
+    ├── config/          # Configuration
+    ├── crypto/pqc/      # Post-quantum cryptography
+    ├── errors/          # Error handling
+    ├── platform/        # Platform-specific code
+    └── security/        # Security validation
+```
+
+**Total**: ~4,656 lines (down from ~15,000)
+
+## 🔐 Security
+
+All security features maintained:
+- Host key verification
+- Secure TTY handling for passwords
+- Input validation (SQL injection, command injection protection)
+- Post-quantum cryptography support
+- Secure file transfers with atomic operations
+
+## 📝 Commits
+
+- `56da8af` - chore: Remove dead code and cleanup codebase (#30)
+- `a600998` - Simplify CLI to mimic standard SSH command (#29)
+- `8f108b4` - Design Simplified SSH Command Implementation (#28)
+
+## 🙏 Acknowledgments
+
+This simplification was driven by the principle that **tools should do one thing well**. By focusing on core SSH/SCP functionality over Tailscale, ts-ssh is now more maintainable, easier to understand, and more aligned with Unix philosophy.
+
+---
+
+**Full Changelog**: https://github.com/derekg/ts-ssh/compare/v0.5.0...v0.7.0