fix: Remove hardcoded API keys and add PowerShell installer

CONTRIBUTING.md

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+# Contributing to free-code
+
+Terima kasih atas ketertarikan Anda untuk berkontribusi pada free-code! Berikut panduan untuk memulai.
+
+## Quick Start
+
+### Prerequisites
+
+- **Bun** >= 1.3.11 ([install bun](https://bun.sh))
+- **Git**
+- API key dari provider yang didukung (Anthropic, OpenAI, atau lainnya)
+
+### 1. Fork & Clone
+
+```bash
+# Fork via GitHub web
+git clone https://github.com/USERNAME/free-code.git
+cd free-code
+```
+
+### 2. Install & Build
+
+```bash
+bun install
+bun run build:dev:full
+./cli-dev.exe
+```
+
+### 3. Development Loop
+
+```bash
+bun run build:dev:full
+./cli-dev.exe -p "test your changes"
+```
+
+---
+
+## Cara Berkontribusi
+
+### 1. Fix Broken Flags (Paling Mudah)
+
+Lihat `FEATURES.md`. Ada 34 feature flags yang gagal bundle karena file hilang. Yang paling mudah diperbaiki:
+
+- Flag dengan "Easy Reconstruction Path" di `FEATURES.md`
+- Biasanya hanya perlu buat file wrapper atau asset
+
+Cara cek:
+```bash
+bun run ./scripts/build.ts --feature=ULTRAPLAN
+```
+
+### 2. Tambah Provider API Baru
+
+Fork `src/services/api/` dan buat adapter baru. Contoh yang sudah ada:
+- `codex-fetch-adapter.ts` (OpenAI Codex)
+- `vertex-fetch-adapter.ts` (Google Vertex)
+
+### 3. Fix Bugs
+
+Cek issue terbuka di GitHub, terutama:
+- **#40** - Windows support
+- **#38** - Resubmit tool result
+- **#37** - Repeating shell results
+
+### 4. Enhancements
+
+- Tambah CLI flags baru
+- Tingkatkan UI/UX
+- Optimasi performance
+
+---
+
+## Build Commands
+
+| Command | Output | Features |
+|---|---|---|
+| `bun run build` | `./cli` | Default (VOICE_MODE only) |
+| `bun run build:dev` | `./cli-dev` | Dev build |
+| `bun run build:dev:full` | `./cli-dev` | All 54 experimental flags |
+| `bun run compile` | `./dist/cli` | Compiled binary |
+
+### Custom Feature Flags
+
+```bash
+bun run ./scripts/build.ts --feature=ULTRAPLAN --feature=ULTRATHINK
+bun run ./scripts/build.ts --dev --feature=BRIDGE_MODE
+```
+
+---
+
+## Code Style
+
+- **TypeScript** untuk semua kode
+- Gunakan `const` jika memungkinkan
+- Jangan tambah dependency baru tanpa diskusi
+- Ikuti pola kode yang sudah ada di `src/`
+- Gunakan `bun` sebagai runtime
+
+## Commit Message
+
+Format:
+```
+<type>: <description>
+
+[optional body]
+
+Fixes #<issue_number>
+```
+
+Contoh:
+```
+feat: add DeepSeek v4 provider support
+fix: resolve issue #40 Windows installer path
+docs: add PowerShell install instructions
+```
+
+---
+
+## Submitting Changes
+
+1. Buat branch baru dari `main`
+2. Commit dengan message yang jelas
+3. Push ke fork Anda
+4. Buka Pull Request (PR) ke `freecodexyz/free-code`
+5. Tambah deskripsi yang jelas untuk PR
+
+---
+
+## Topik yang Dibutuhkan
+
+- **Windows Support** - Installer PowerShell, path handling
+- **Provider Support** - DeepSeek, Mistral, Kimi, Ollama
+- **Feature Flags** - Rekonstruksi 34 flag yang rusak
+- **Performance** - Optimasi build time dan runtime
+- **Bug Fixes** - Tool result handling, bash classifier
+
+---
+
+## Questions?
+
+Buka issue di GitHub atau hubungi maintainer.

free-code.bat

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+@echo off
+:: Set your API key and preferred model here, or use environment variables.
+:: Example (PowerShell):
+::   $env:ANTHROPIC_API_KEY="sk-your-key"
+::   $env:ANTHROPIC_BASE_URL="https://api.anthropic.com"
+:: Or use --login to authenticate interactively.
+"%~dp0cli.exe" --model claude %*

install.ps1

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+# free-code installer for Windows (no WSL required)
+# Usage: powershell -ExecutionPolicy Bypass -File install.ps1
+
+$ErrorActionPreference = "Stop"
+
+# -------------------------------------------------------------------
+# Banner
+# -------------------------------------------------------------------
+
+Write-Host ""
+Write-Host "  ___                            _       " -ForegroundColor Cyan
+Write-Host " / _|_ __ ___  ___        ___ __| | ___  " -ForegroundColor Cyan
+Write-Host "| |_| '__/ _ \/ _ \_____ / __/ _` |/ _ \ " -ForegroundColor Cyan
+Write-Host "|  _| | |  __/  __/_____| (_| (_| |  __/ " -ForegroundColor Cyan
+Write-Host "|_| |_|  \___|\___|      \___\__,_|\___|  " -ForegroundColor Cyan
+Write-Host "  The free build of Claude Code" -ForegroundColor DarkGray
+Write-Host ""
+
+function Info {
+    Param([string]$Msg)
+    Write-Host "[*] $Msg" -ForegroundColor Cyan
+}
+function Ok {
+    Param([string]$Msg)
+    Write-Host "[+] $Msg" -ForegroundColor Green
+}
+function Warn {
+    Param([string]$Msg)
+    Write-Host "[!] $Msg" -ForegroundColor Yellow
+}
+function Fail {
+    Param([string]$Msg)
+    Write-Host "[x] $Msg" -ForegroundColor Red
+    exit 1
+}
+
+# -------------------------------------------------------------------
+# System checks
+# -------------------------------------------------------------------
+
+$OS = if ($PSVersionTable.PSEdition -eq "Desktop") {
+    if ([Environment]::Is64BitOperatingSystem) { "win64" } else { "win32" }
+} else {
+    "win64"
+}
+Ok "OS: Windows $OS"
+
+function Test-CommandExists {
+    Param([string]$Cmd)
+    $null -ne (Get-Command $Cmd -ErrorAction SilentlyContinue)
+}
+
+if (-not (Test-CommandExists "git")) {
+    Fail "git is not installed. Get it from https://git-scm.com/download/win"
+}
+$gitVer = git --version | Select-Object -First 1
+Ok "git: $gitVer"
+
+$BUN_MIN_VERSION = "1.3.11"
+
+# Check or install Bun
+$bunPath = $null
+if (Test-CommandExists "bun") {
+    $bunPath = (Get-Command bun).Source
+    $bunVer = bun --version 2>$null
+    $bunVerParts = $bunVer.Split('.')
+    $minParts = $BUN_MIN_VERSION.Split('.')
+    $needsUpgrade = $false
+    for ($i = 0; $i -lt $minParts.Length; $i++) {
+        $a = [int]$bunVerParts[$i]
+        $b = [int]$minParts[$i]
+        if ($a -gt $b) { break }
+        if ($a -lt $b) { $needsUpgrade = $true; break }
+    }
+    if ($needsUpgrade) {
+        Warn "Bun v$bunVer found but v${BUN_MIN_VERSION}+ required. Upgrading..."
+        $bunPath = $null
+    } else {
+        Ok "bun: v$bunVer"
+    }
+}
+
+if (-not $bunPath) {
+    Info "Installing Bun..."
+    try {
+        powershell -c "irm https://bun.sh/install.ps1 | iex"
+    } catch {
+        # Try iwr fallback
+        Invoke-RestMethod -Uri "https://bun.sh/install.ps1" | Invoke-Expression
+    }
+
+    $env:Path = [System.Environment]::GetEnvironmentVariable("Path", "Machine") + ";" +
+                [System.Environment]::GetEnvironmentVariable("Path", "User")
+    if (Test-CommandExists "bun") {
+        $bunPath = (Get-Command bun).Source
+        $bunVer = bun --version
+        Ok "bun: v$bunVer (just installed)"
+    } else {
+        $bunDir = Join-Path $env:LOCALAPPDATA "Programs\bun"
+        if (Test-Path (Join-Path $bunDir "bun.exe")) {
+            $bunPath = Join-Path $bunDir "bun.exe"
+            Ok "bun: found at $bunPath"
+            # Add to PATH for this session
+            $env:Path = "$bunDir;$env:Path"
+        } else {
+            Fail "Bun installed but not found on PATH. Restart your terminal and retry."
+        }
+    }
+}
+
+if (-not $bunPath) {
+    Fail "Bun installation failed. Please install manually from https://bun.sh"
+}
+
+# -------------------------------------------------------------------
+# Clone repo
+# -------------------------------------------------------------------
+
+$REPO = "https://github.com/freecodexyz/free-code.git"
+$INSTALL_DIR = Join-Path $env:USERPROFILE "free-code"
+$LINK_DIR = Join-Path $env:LOCALAPPDATA "Programs\free-code"
+$LINK_PATH = Join-Path $LINK_DIR "free-code.ps1"
+
+Info "Target directory: $INSTALL_DIR"
+
+if (-not (Test-Path $INSTALL_DIR)) {
+    Info "Cloning repository..."
+    git clone --depth 1 "$REPO" "$INSTALL_DIR"
+    Ok "Source: $INSTALL_DIR"
+} else {
+    Info "Directory already exists, pulling latest..."
+    Push-Location $INSTALL_DIR
+    try {
+        git pull --ff-only
+        Ok "Updated: $INSTALL_DIR"
+    } catch {
+        Warn "Pull failed, using existing copy"
+    }
+    Pop-Location
+}
+
+# -------------------------------------------------------------------
+# Build
+# -------------------------------------------------------------------
+
+Info "Installing dependencies..."
+Push-Location $INSTALL_DIR
+& $bunPath install --frozen-lockfile 2>$null
+if ($LASTEXITCODE -ne 0) {
+    Info "Retrying without frozen lockfile..."
+    & $bunPath install
+}
+Ok "Dependencies installed"
+
+Info "Building free-code (all experimental features enabled)..."
+& $bunPath run build:dev:full
+Ok "Build complete"
+
+Pop-Location
+
+# -------------------------------------------------------------------
+# Symlink
+# -------------------------------------------------------------------
+
+if (-not (Test-Path $LINK_DIR)) {
+    New-Item -ItemType Directory -Path $LINK_DIR -Force | Out-Null
+}
+
+# Create a PowerShell wrapper script
+$escapedPath = $INSTALL_DIR.Replace('"', '`"')
+$wrapper = @"
+`$ErrorActionPreference = 'Stop'
+`$ROOT = '$escapedPath'
+`$CLI = Join-Path `$ROOT 'cli-dev.exe'
+if (Test-Path (Join-Path `$ROOT 'cli.exe')) {
+    `$CLI = Join-Path `$ROOT 'cli.exe'
+}
+Set-Location `$ROOT
+& `$CLI @args
+"@
+
+$wrapper | Out-File -FilePath $LINK_PATH -Encoding UTF8
+Ok "Installed: $LINK_PATH"
+
+# Add to PATH if not already there
+$machinePath = [System.Environment]::GetEnvironmentVariable("Path", "Machine")
+$userPath = [System.Environment]::GetEnvironmentVariable("Path", "User")
+
+if ($machinePath -notlike "*$LINK_DIR*" -and $userPath -notlike "*$LINK_DIR*") {
+    Info "Adding $LINK_DIR to user PATH..."
+    [System.Environment]::SetEnvironmentVariable("Path", "$userPath;$LINK_DIR", "User")
+    $env:Path = "$env:Path;$LINK_DIR"
+    Warn "Please restart your terminal for PATH to take effect."
+}
+
+# Register .ps1 execution policy for the link
+$execPolicy = Get-ExecutionPolicy -Scope CurrentUser
+if ($execPolicy -eq "Restricted") {
+    Info "Setting execution policy to RemoteSigned for current user..."
+    Set-ExecutionPolicy -Scope CurrentUser -ExecutionPolicy RemoteSigned -Force
+}
+
+# -------------------------------------------------------------------
+# Done
+# -------------------------------------------------------------------
+
+Write-Host ""
+Write-Host "  Installation complete!" -ForegroundColor Green
+Write-Host ""
+Write-Host "  Run it:" -ForegroundColor Cyan
+Write-Host "    free-code.ps1                          # interactive REPL" -ForegroundColor Green
+Write-Host "    free-code.ps1 -p `"your prompt`"        # one-shot mode" -ForegroundColor Green
+Write-Host "    free-code.ps1 /login                   # authenticate" -ForegroundColor Green
+Write-Host ""
+Write-Host "  Set your API key (optional):" -ForegroundColor Cyan
+Write-Host "    `$env:ANTHROPIC_API_KEY = `"sk-ant-...`"" -ForegroundColor Green
+Write-Host "    `$env:CLAUDE_CODE_USE_OPENAI = 1      # use OpenAI Codex" -ForegroundColor DarkGray
+Write-Host ""
+Write-Host "  Source: $INSTALL_DIR" -ForegroundColor DarkGray
+Write-Host "  Binary: $INSTALL_DIR\cli-dev.exe" -ForegroundColor DarkGray
+Write-Host "  Launch: $LINK_PATH" -ForegroundColor DarkGray
+Write-Host ""

run-free-code.ps1

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+# Set your API key via environment variable before running this script.
+# Example (PowerShell):
+#   $env:ANTHROPIC_API_KEY = "sk-your-key"
+#   $env:ANTHROPIC_BASE_URL = "https://api.anthropic.com"
+# Or use --login to authenticate interactively.
+& "$PSScriptRoot\cli.exe" @args