fix: memory files tab empty on Windows (#140)

## Summary

Fixes the memory files tab showing as empty on Windows production builds and the "forbidden path" error when trying to read memory files.

## Changes

### 1. List memory files from WSL home directory (commit 1)
- Split `list_memory_files()` into platform-specific implementations
- **Windows**: Use WSL command with `bash -l` to find memory files in WSL home (`~/.claude/projects/.../memory/`)
- **Linux/Mac**: Continue using native filesystem access
- Previously used `dirs::home_dir()` which returns Windows home (`C:\Users\...`), but Claude Code stores files in WSL home

### 2. Use backend command for reading files (commit 2)
- Changed frontend from Tauri's `readTextFile` plugin to `read_file_content` backend command
- Tauri plugin enforces scope restrictions and can't access WSL paths on Windows
- Our backend command already handles WSL paths correctly via `read_file_via_wsl()`
- Matches the pattern used throughout the app for other file operations

## Testing

- ✅ All 426 backend tests pass
- ✅ All frontend tests pass
- ✅ Lint, format, and type checks pass
- ✅ Follows existing WSL file operation patterns in codebase

## Related Issues

Fixes the memory files tab functionality on Windows whilst maintaining full compatibility with Linux/Mac.

✨ This PR was created by Hikari~ 🌸

Reviewed-on: #140
Co-authored-by: Hikari <hikari@nhcarrigan.com>
Co-committed-by: Hikari <hikari@nhcarrigan.com>

src-tauri/src/commands.rs

@@ -1219,6 +1219,55 @@ pub struct MemoryFilesResponse {
 
 #[tauri::command]
 pub async fn list_memory_files() -> Result<MemoryFilesResponse, String> {
+    // On Windows, we need to look in the WSL home directory
+    // On Linux/Mac, use the native home directory
+    #[cfg(target_os = "windows")]
+    {
+        list_memory_files_via_wsl().await
+    }
+
+    #[cfg(not(target_os = "windows"))]
+    {
+        list_memory_files_native().await
+    }
+}
+
+/// List memory files via WSL (for Windows)
+#[cfg(target_os = "windows")]
+async fn list_memory_files_via_wsl() -> Result<MemoryFilesResponse, String> {
+    use std::process::Command;
+
+    // Use WSL to find all memory files in the WSL home directory
+    // This script finds all "memory" directories and lists their files
+    let script = r#"
+        find ~/.claude/projects -type d -name memory 2>/dev/null | while read dir; do
+            find "$dir" -maxdepth 1 -type f 2>/dev/null
+        done | sort
+    "#;
+
+    let output = Command::new("wsl")
+        .args(["-e", "bash", "-l", "-c", script])
+        .output()
+        .map_err(|e| format!("Failed to execute WSL command: {}", e))?;
+
+    if !output.status.success() {
+        let stderr = String::from_utf8_lossy(&output.stderr);
+        return Err(format!("Failed to list memory files: {}", stderr));
+    }
+
+    let stdout = String::from_utf8_lossy(&output.stdout);
+    let files: Vec<String> = stdout
+        .lines()
+        .filter(|line| !line.trim().is_empty())
+        .map(|line| line.trim().to_string())
+        .collect();
+
+    Ok(MemoryFilesResponse { files })
+}
+
+/// List memory files using native filesystem (for Linux/Mac)
+#[cfg(not(target_os = "windows"))]
+async fn list_memory_files_native() -> Result<MemoryFilesResponse, String> {
     use std::fs;
 
     // Get the .claude directory in the user's home