diff --git a/src/init.rs b/src/init.rs
index 494bef34..1a30ecb0 100644
--- a/src/init.rs
+++ b/src/init.rs
@@ -298,7 +298,6 @@ fn prepare_hook_paths() -> Result<(PathBuf, PathBuf)> {
 }
 
 /// Write hook file if missing or outdated, return true if changed
-#[cfg(unix)]
 fn ensure_hook_installed(hook_path: &Path, verbose: u8) -> Result<bool> {
     let changed = if hook_path.exists() {
         let existing = fs::read_to_string(hook_path)
@@ -326,10 +325,12 @@ fn ensure_hook_installed(hook_path: &Path, verbose: u8) -> Result<bool> {
         true
     };
 
-    // Set executable permissions
-    use std::os::unix::fs::PermissionsExt;
-    fs::set_permissions(hook_path, fs::Permissions::from_mode(0o755))
-        .with_context(|| format!("Failed to set hook permissions: {}", hook_path.display()))?;
+    #[cfg(unix)]
+    {
+        use std::os::unix::fs::PermissionsExt;
+        fs::set_permissions(hook_path, fs::Permissions::from_mode(0o755))
+            .with_context(|| format!("Failed to set hook permissions: {}", hook_path.display()))?;
+    }
 
     // Store SHA-256 hash for runtime integrity verification.
     // Always store (idempotent) to ensure baseline exists even for
@@ -862,20 +863,6 @@ fn hook_already_present(root: &serde_json::Value, hook_command: &str) -> bool {
 }
 
 /// Default mode: hook + slim RTK.md + @RTK.md reference
-#[cfg(not(unix))]
-fn run_default_mode(
-    _global: bool,
-    _patch_mode: PatchMode,
-    _verbose: u8,
-    _install_opencode: bool,
-) -> Result<()> {
-    eprintln!("[warn] Hook-based mode requires Unix (macOS/Linux).");
-    eprintln!("    Windows: use --claude-md mode for full injection.");
-    eprintln!("    Falling back to --claude-md mode.");
-    run_claude_md_mode(_global, _verbose, _install_opencode)
-}
-
-#[cfg(unix)]
 fn run_default_mode(
     global: bool,
     patch_mode: PatchMode,
@@ -1009,17 +996,6 @@ fn generate_global_filters_template(verbose: u8) -> Result<()> {
 }
 
 /// Hook-only mode: just the hook, no RTK.md
-#[cfg(not(unix))]
-fn run_hook_only_mode(
-    _global: bool,
-    _patch_mode: PatchMode,
-    _verbose: u8,
-    _install_opencode: bool,
-) -> Result<()> {
-    anyhow::bail!("Hook install requires Unix (macOS/Linux). Use WSL or --claude-md mode.")
-}
-
-#[cfg(unix)]
 fn run_hook_only_mode(
     global: bool,
     patch_mode: PatchMode,