feat: add IRONCLAW_BASE_DIR env var with LazyLock caching (#397)

src/cli/doctor.rs

@@ -6,6 +6,8 @@
 
 use std::path::PathBuf;
 
+use crate::bootstrap::ironclaw_base_dir;
+
 /// Run all diagnostic checks and print results.
 pub async fn run_doctor_command() -> anyhow::Result<()> {
     println!("IronClaw Doctor");
@@ -195,9 +197,7 @@ async fn try_pg_connect() -> Result<(), String> {
 }
 
 fn check_workspace_dir() -> CheckResult {
-    let dir = dirs::home_dir()
-        .unwrap_or_else(|| PathBuf::from("."))
-        .join(".ironclaw");
+    let dir = ironclaw_base_dir();
 
     if dir.exists() {
         if dir.is_dir() {

src/cli/status.rs

@@ -5,6 +5,7 @@
 
 use std::path::PathBuf;
 
+use crate::bootstrap::ironclaw_base_dir;
 use crate::settings::Settings;
 
 /// Run the status command, printing system health info.
@@ -206,15 +207,9 @@ fn count_wasm_files(dir: &std::path::Path) -> usize {
 }
 
 fn default_tools_dir() -> PathBuf {
-    dirs::home_dir()
-        .unwrap_or_else(|| PathBuf::from("."))
-        .join(".ironclaw")
-        .join("tools")
+    ironclaw_base_dir().join("tools")
 }
 
 fn default_channels_dir() -> PathBuf {
-    dirs::home_dir()
-        .unwrap_or_else(|| PathBuf::from("."))
-        .join(".ironclaw")
-        .join("channels")
+    ironclaw_base_dir().join("channels")
 }

src/cli/tool.rs

@@ -9,6 +9,7 @@ use std::sync::Arc;
 use clap::Subcommand;
 use tokio::fs;
 
+use crate::bootstrap::ironclaw_base_dir;
 use crate::config::Config;
 #[allow(unused_imports)]
 use crate::db::Database;
@@ -19,9 +20,7 @@ use crate::tools::wasm::{CapabilitiesFile, compute_binary_hash};
 
 /// Default tools directory.
 fn default_tools_dir() -> PathBuf {
-    dirs::home_dir()
-        .map(|h| h.join(".ironclaw").join("tools"))
-        .unwrap_or_else(|| PathBuf::from(".ironclaw/tools"))
+    ironclaw_base_dir().join("tools")
 }
 
 #[derive(Subcommand, Debug, Clone)]