fix(cortex-cli): expand tilde in import command file paths

Fixes bounty issue #1571

The import command was treating the tilde (~) character literally instead
of expanding it to the user's home directory. This prevented users from
using paths like ~/file.json with the cortex import command.

The fix uses the existing expand_home_path() function from cortex-common
to properly expand the tilde before reading the file.

Author: factorydroid

cortex-cli/src/import_cmd.rs

@@ -4,7 +4,9 @@
 
 use anyhow::{Context, Result, bail};
 use clap::Parser;
-use std::path::PathBuf;
+use std::path::{Path, PathBuf};
+
+use cortex_common::path_utils::expand_home_path;
 
 use cortex_engine::rollout::recorder::{RolloutRecorder, SessionMeta};
 use cortex_engine::rollout::{SESSIONS_SUBDIR, get_rollout_path};
@@ -44,8 +46,9 @@ impl ImportCommand {
                 // Fetch from URL
                 fetch_url(&self.source).await?
             } else {
-                // Read from local file
-                let path = PathBuf::from(&self.source);
+                // Read from local file (expand tilde to home directory)
+                let path = expand_home_path(Path::new(&self.source))
+                    .map_err(|e| anyhow::anyhow!("Failed to expand path: {}", e))?;
                 std::fs::read_to_string(&path)
                     .with_context(|| format!("Failed to read file: {}", path.display()))?
             };