fix: work on paths

package.json

@@ -89,6 +89,6 @@
     "typescript": "~5.6.2",
     "typescript-eslint": "^8.53.0",
     "vite": "^6.0.3",
-    "vitest": "4.0.18"
+    "vitest": "^4.0.17"
   }
 }

pnpm-lock.yaml

@@ -146,10 +146,10 @@ importers:
         version: 6.9.1
       '@testing-library/svelte':
         specifier: ^5.3.1
-        version: 5.3.1(svelte@5.46.3)(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))(vitest@4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))
+        version: 5.3.1(svelte@5.46.3)(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))(vitest@4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))
       '@vitest/coverage-v8':
         specifier: ^4.0.18
-        version: 4.0.18(vitest@4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))
+        version: 4.0.18(vitest@4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))
       eslint:
         specifier: ^9.39.2
         version: 9.39.2(jiti@2.6.1)
@@ -190,8 +190,8 @@ importers:
         specifier: ^6.0.3
         version: 6.4.1(jiti@2.6.1)(lightningcss@1.30.2)
       vitest:
-        specifier: 4.0.18
-        version: 4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2)
+        specifier: ^4.0.17
+        version: 4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2)
 
 packages:
 
@@ -1117,11 +1117,11 @@ packages:
       '@vitest/browser':
         optional: true
 
-  '@vitest/expect@4.0.18':
-    resolution: {integrity: sha512-8sCWUyckXXYvx4opfzVY03EOiYVxyNrHS5QxX3DAIi5dpJAAkyJezHCP77VMX4HKA2LDT/Jpfo8i2r5BE3GnQQ==}
+  '@vitest/expect@4.0.17':
+    resolution: {integrity: sha512-mEoqP3RqhKlbmUmntNDDCJeTDavDR+fVYkSOw8qRwJFaW/0/5zA9zFeTrHqNtcmwh6j26yMmwx2PqUDPzt5ZAQ==}
 
-  '@vitest/mocker@4.0.18':
-    resolution: {integrity: sha512-HhVd0MDnzzsgevnOWCBj5Otnzobjy5wLBe4EdeeFGv8luMsGcYqDuFRMcttKWZA5vVO8RFjexVovXvAM4JoJDQ==}
+  '@vitest/mocker@4.0.17':
+    resolution: {integrity: sha512-+ZtQhLA3lDh1tI2wxe3yMsGzbp7uuJSWBM1iTIKCbppWTSBN09PUC+L+fyNlQApQoR+Ps8twt2pbSSXg2fQVEQ==}
     peerDependencies:
       msw: ^2.4.9
       vite: ^6.0.0 || ^7.0.0-0
@@ -1131,17 +1131,23 @@ packages:
       vite:
         optional: true
 
+  '@vitest/pretty-format@4.0.17':
+    resolution: {integrity: sha512-Ah3VAYmjcEdHg6+MwFE17qyLqBHZ+ni2ScKCiW2XrlSBV4H3Z7vYfPfz7CWQ33gyu76oc0Ai36+kgLU3rfF4nw==}
+
   '@vitest/pretty-format@4.0.18':
     resolution: {integrity: sha512-P24GK3GulZWC5tz87ux0m8OADrQIUVDPIjjj65vBXYG17ZeU3qD7r+MNZ1RNv4l8CGU2vtTRqixrOi9fYk/yKw==}
 
-  '@vitest/runner@4.0.18':
-    resolution: {integrity: sha512-rpk9y12PGa22Jg6g5M3UVVnTS7+zycIGk9ZNGN+m6tZHKQb7jrP7/77WfZy13Y/EUDd52NDsLRQhYKtv7XfPQw==}
+  '@vitest/runner@4.0.17':
+    resolution: {integrity: sha512-JmuQyf8aMWoo/LmNFppdpkfRVHJcsgzkbCA+/Bk7VfNH7RE6Ut2qxegeyx2j3ojtJtKIbIGy3h+KxGfYfk28YQ==}
 
-  '@vitest/snapshot@4.0.18':
-    resolution: {integrity: sha512-PCiV0rcl7jKQjbgYqjtakly6T1uwv/5BQ9SwBLekVg/EaYeQFPiXcgrC2Y7vDMA8dM1SUEAEV82kgSQIlXNMvA==}
+  '@vitest/snapshot@4.0.17':
+    resolution: {integrity: sha512-npPelD7oyL+YQM2gbIYvlavlMVWUfNNGZPcu0aEUQXt7FXTuqhmgiYupPnAanhKvyP6Srs2pIbWo30K0RbDtRQ==}
 
-  '@vitest/spy@4.0.18':
-    resolution: {integrity: sha512-cbQt3PTSD7P2OARdVW3qWER5EGq7PHlvE+QfzSC0lbwO+xnt7+XH06ZzFjFRgzUX//JmpxrCu92VdwvEPlWSNw==}
+  '@vitest/spy@4.0.17':
+    resolution: {integrity: sha512-I1bQo8QaP6tZlTomQNWKJE6ym4SHf3oLS7ceNjozxxgzavRAgZDc06T7kD8gb9bXKEgcLNt00Z+kZO6KaJ62Ew==}
+
+  '@vitest/utils@4.0.17':
+    resolution: {integrity: sha512-RG6iy+IzQpa9SB8HAFHJ9Y+pTzI+h8553MrciN9eC6TFBErqrQaTas4vG+MVj8S4uKk8uTT2p0vgZPnTdxd96w==}
 
   '@vitest/utils@4.0.18':
     resolution: {integrity: sha512-msMRKLMVLWygpK3u2Hybgi4MNjcYJvwTb0Ru09+fOyCXIgT5raYP041DRRdiJiI3k/2U6SEbAETB3YtBrUkCFA==}
@@ -2030,18 +2036,18 @@ packages:
       vite:
         optional: true
 
-  vitest@4.0.18:
-    resolution: {integrity: sha512-hOQuK7h0FGKgBAas7v0mSAsnvrIgAvWmRFjmzpJ7SwFHH3g1k2u37JtYwOwmEKhK6ZO3v9ggDBBm0La1LCK4uQ==}
+  vitest@4.0.17:
+    resolution: {integrity: sha512-FQMeF0DJdWY0iOnbv466n/0BudNdKj1l5jYgl5JVTwjSsZSlqyXFt/9+1sEyhR6CLowbZpV7O1sCHrzBhucKKg==}
     engines: {node: ^20.0.0 || ^22.0.0 || >=24.0.0}
     hasBin: true
     peerDependencies:
       '@edge-runtime/vm': '*'
       '@opentelemetry/api': ^1.9.0
       '@types/node': ^20.0.0 || ^22.0.0 || >=24.0.0
-      '@vitest/browser-playwright': 4.0.18
-      '@vitest/browser-preview': 4.0.18
-      '@vitest/browser-webdriverio': 4.0.18
-      '@vitest/ui': 4.0.18
+      '@vitest/browser-playwright': 4.0.17
+      '@vitest/browser-preview': 4.0.17
+      '@vitest/browser-webdriverio': 4.0.17
+      '@vitest/ui': 4.0.17
       happy-dom: '*'
       jsdom: '*'
     peerDependenciesMeta:
@@ -2960,14 +2966,14 @@ snapshots:
     dependencies:
       svelte: 5.46.3
 
-  '@testing-library/svelte@5.3.1(svelte@5.46.3)(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))(vitest@4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))':
+  '@testing-library/svelte@5.3.1(svelte@5.46.3)(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))(vitest@4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))':
     dependencies:
       '@testing-library/dom': 10.4.1
       '@testing-library/svelte-core': 1.0.0(svelte@5.46.3)
       svelte: 5.46.3
     optionalDependencies:
       vite: 6.4.1(jiti@2.6.1)(lightningcss@1.30.2)
-      vitest: 4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2)
+      vitest: 4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2)
 
   '@types/aria-query@5.0.4': {}
 
@@ -3075,7 +3081,7 @@ snapshots:
       '@typescript-eslint/types': 8.53.0
       eslint-visitor-keys: 4.2.1
 
-  '@vitest/coverage-v8@4.0.18(vitest@4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))':
+  '@vitest/coverage-v8@4.0.18(vitest@4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2))':
     dependencies:
       '@bcoe/v8-coverage': 1.0.2
       '@vitest/utils': 4.0.18
@@ -3087,41 +3093,50 @@ snapshots:
       obug: 2.1.1
       std-env: 3.10.0
       tinyrainbow: 3.0.3
-      vitest: 4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2)
+      vitest: 4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2)
 
-  '@vitest/expect@4.0.18':
+  '@vitest/expect@4.0.17':
     dependencies:
       '@standard-schema/spec': 1.1.0
       '@types/chai': 5.2.3
-      '@vitest/spy': 4.0.18
-      '@vitest/utils': 4.0.18
+      '@vitest/spy': 4.0.17
+      '@vitest/utils': 4.0.17
       chai: 6.2.2
       tinyrainbow: 3.0.3
 
-  '@vitest/mocker@4.0.18(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))':
+  '@vitest/mocker@4.0.17(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))':
     dependencies:
-      '@vitest/spy': 4.0.18
+      '@vitest/spy': 4.0.17
       estree-walker: 3.0.3
       magic-string: 0.30.21
     optionalDependencies:
       vite: 6.4.1(jiti@2.6.1)(lightningcss@1.30.2)
 
+  '@vitest/pretty-format@4.0.17':
+    dependencies:
+      tinyrainbow: 3.0.3
+
   '@vitest/pretty-format@4.0.18':
     dependencies:
       tinyrainbow: 3.0.3
 
-  '@vitest/runner@4.0.18':
+  '@vitest/runner@4.0.17':
     dependencies:
-      '@vitest/utils': 4.0.18
+      '@vitest/utils': 4.0.17
       pathe: 2.0.3
 
-  '@vitest/snapshot@4.0.18':
+  '@vitest/snapshot@4.0.17':
     dependencies:
-      '@vitest/pretty-format': 4.0.18
+      '@vitest/pretty-format': 4.0.17
       magic-string: 0.30.21
       pathe: 2.0.3
 
-  '@vitest/spy@4.0.18': {}
+  '@vitest/spy@4.0.17': {}
+
+  '@vitest/utils@4.0.17':
+    dependencies:
+      '@vitest/pretty-format': 4.0.17
+      tinyrainbow: 3.0.3
 
   '@vitest/utils@4.0.18':
     dependencies:
@@ -3961,15 +3976,15 @@ snapshots:
     optionalDependencies:
       vite: 6.4.1(jiti@2.6.1)(lightningcss@1.30.2)
 
-  vitest@4.0.18(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2):
+  vitest@4.0.17(jiti@2.6.1)(jsdom@27.4.0)(lightningcss@1.30.2):
     dependencies:
-      '@vitest/expect': 4.0.18
-      '@vitest/mocker': 4.0.18(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))
-      '@vitest/pretty-format': 4.0.18
-      '@vitest/runner': 4.0.18
-      '@vitest/snapshot': 4.0.18
-      '@vitest/spy': 4.0.18
-      '@vitest/utils': 4.0.18
+      '@vitest/expect': 4.0.17
+      '@vitest/mocker': 4.0.17(vite@6.4.1(jiti@2.6.1)(lightningcss@1.30.2))
+      '@vitest/pretty-format': 4.0.17
+      '@vitest/runner': 4.0.17
+      '@vitest/snapshot': 4.0.17
+      '@vitest/spy': 4.0.17
+      '@vitest/utils': 4.0.17
       es-module-lexer: 1.7.0
       expect-type: 1.3.0
       magic-string: 0.30.21

src-tauri/src/commands.rs

@@ -8,6 +8,7 @@ use crate::bridge_manager::SharedBridgeManager;
 use crate::config::{ClaudeStartOptions, HikariConfig};
 use crate::stats::UsageStats;
 use crate::temp_manager::SharedTempFileManager;
+use crate::utils::normalize_path_separators;
 
 const CONFIG_STORE_KEY: &str = "config";
 
@@ -126,7 +127,7 @@ pub async fn validate_directory(
 
     // Expand ~ to home directory
     let expanded_path = if path.starts_with("~") {
-        if let Some(home) = std::env::var_os("HOME") {
+        if let Some(home) = std::env::var_os("HOME").or_else(|| std::env::var_os("USERPROFILE")) {
             let home_path = Path::new(&home);
             if path == Path::new("~") {
                 home_path.to_path_buf()
@@ -162,10 +163,10 @@ pub async fn validate_directory(
         ));
     }
 
-    // Return the canonicalized (absolute) path
+    // Return the canonicalized (absolute) path with forward slashes
     expanded_path
         .canonicalize()
-        .map(|p| p.to_string_lossy().to_string())
+        .map(|p| normalize_path_separators(&p.to_string_lossy()))
         .map_err(|e| format!("Failed to resolve path: {}", e))
 }
 
@@ -205,9 +206,10 @@ pub async fn list_skills() -> Result<Vec<String>, String> {
     use std::fs;
     use std::path::Path;
 
-    // Get the home directory
-    let home =
-        std::env::var_os("HOME").ok_or_else(|| "Could not determine home directory".to_string())?;
+    // Get the home directory - use HOME on Unix, USERPROFILE on Windows
+    let home = std::env::var_os("HOME")
+        .or_else(|| std::env::var_os("USERPROFILE"))
+        .ok_or_else(|| "Could not determine home directory".to_string())?;
 
     let skills_dir = Path::new(&home).join(".claude").join("skills");
 
@@ -437,9 +439,11 @@ pub async fn list_directory(path: String) -> Result<Vec<FileEntry>, String> {
             continue;
         }
 
+        let path_str = normalize_path_separators(&path.to_string_lossy());
+
         file_entries.push(FileEntry {
             name,
-            path: path.to_string_lossy().to_string(),
+            path: path_str,
             is_directory: path.is_dir(),
         });
     }
@@ -814,4 +818,25 @@ mod tests {
         assert!(json.contains("/tmp/test.txt"));
         assert!(json.contains("test.txt"));
     }
+
+    #[test]
+    fn test_validate_directory_normalizes_backslashes() {
+        // This test ensures that paths with backslashes are normalized
+        // Create a temp directory for testing
+        let temp_dir = TempDir::new().unwrap();
+
+        // On Windows, the canonicalized path will have backslashes
+        // Our normalize_path_separators should convert them to forward slashes
+        let result = run_async(validate_directory(
+            temp_dir.path().to_string_lossy().to_string(),
+            None,
+        ));
+
+        assert!(result.is_ok());
+        let normalized_path = result.unwrap();
+
+        // The result should never contain backslashes
+        assert!(!normalized_path.contains('\\'),
+            "Path should not contain backslashes: {}", normalized_path);
+    }
 }

src-tauri/src/lib.rs

@@ -12,6 +12,7 @@ mod stats;
 mod temp_manager;
 mod tray;
 mod types;
+mod utils;
 mod vbs_notification;
 mod windows_toast;
 mod wsl_bridge;

src-tauri/src/utils.rs

@@ -0,0 +1,71 @@
+/// Utility functions for cross-platform compatibility
+
+/// Normalize path separators to forward slashes for consistent handling across platforms
+/// This always normalizes backslashes to forward slashes, regardless of platform,
+/// because Windows paths may be passed to WSL which expects Unix-style paths
+pub fn normalize_path_separators(path: &str) -> String {
+    path.replace('\\', "/")
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    #[cfg(target_os = "windows")]
+    fn test_normalize_path_windows() {
+        assert_eq!(normalize_path_separators("C:\\Users\\test"), "C:/Users/test");
+        assert_eq!(normalize_path_separators("path\\to\\file"), "path/to/file");
+        assert_eq!(normalize_path_separators("already/forward"), "already/forward");
+        assert_eq!(normalize_path_separators("mixed\\path/file"), "mixed/path/file");
+    }
+
+    #[test]
+    #[cfg(not(target_os = "windows"))]
+    fn test_normalize_path_unix() {
+        assert_eq!(normalize_path_separators("/home/user"), "/home/user");
+        assert_eq!(normalize_path_separators("path/to/file"), "path/to/file");
+        // Even on Unix, we normalize backslashes since paths may come from Windows
+        assert_eq!(normalize_path_separators("weird\\path"), "weird/path");
+        assert_eq!(normalize_path_separators("/home/user\\file"), "/home/user/file");
+    }
+
+    #[test]
+    fn test_normalize_wsl_paths() {
+        // Test the exact issue that was happening
+        assert_eq!(
+            normalize_path_separators("/home/naomi/code/naomi/portfolio\\.."),
+            "/home/naomi/code/naomi/portfolio/.."
+        );
+
+        // Test mixed separators in WSL paths
+        assert_eq!(
+            normalize_path_separators("/mnt/c\\Users\\naomi\\Documents"),
+            "/mnt/c/Users/naomi/Documents"
+        );
+
+        // Test Windows paths that might be passed to WSL
+        assert_eq!(
+            normalize_path_separators("C:\\Users\\naomi\\.claude\\skills"),
+            "C:/Users/naomi/.claude/skills"
+        );
+
+        // Test that forward slashes remain unchanged
+        assert_eq!(
+            normalize_path_separators("/home/naomi/.claude/skills"),
+            "/home/naomi/.claude/skills"
+        );
+
+        // Test empty string
+        assert_eq!(normalize_path_separators(""), "");
+
+        // Test single backslash
+        assert_eq!(normalize_path_separators("\\"), "/");
+
+        // Test multiple consecutive backslashes
+        assert_eq!(
+            normalize_path_separators("path\\\\to\\\\file"),
+            "path//to//file"
+        );
+    }
+}

src-tauri/src/wsl_bridge.rs

@@ -16,6 +16,7 @@ use crate::types::{
     PermissionPromptEvent, QuestionOption, SessionEvent, StateChangeEvent, UserQuestionEvent,
     WorkingDirectoryEvent,
 };
+use crate::utils::normalize_path_separators;
 use parking_lot::RwLock;
 
 const SEARCH_TOOLS: [&str; 5] = ["Read", "Glob", "Grep", "WebSearch", "WebFetch"];
@@ -136,7 +137,8 @@ impl WslBridge {
         });
 
         let working_dir = &options.working_dir;
-        self.working_directory = working_dir.clone();
+        // Normalize path separators to forward slashes
+        self.working_directory = normalize_path_separators(working_dir);
 
         emit_connection_status(
             &app,
@@ -183,7 +185,7 @@ impl WslBridge {
             })?;
 
             eprintln!("[DEBUG] Found claude at: {}", claude_path);
-            eprintln!("[DEBUG] Working dir: {}", working_dir);
+            eprintln!("[DEBUG] Working dir: {}", &self.working_directory);
 
             let mut cmd = Command::new(&claude_path);
             cmd.args([
@@ -225,7 +227,7 @@ impl WslBridge {
                 }
             }
 
-            cmd.current_dir(working_dir);
+            cmd.current_dir(&self.working_directory);
 
             // Set API key as environment variable if specified
             if let Some(ref api_key) = options.api_key {
@@ -241,7 +243,7 @@ impl WslBridge {
             let mut cmd = Command::new("wsl");
 
             // Build the claude command with all arguments
-            let mut claude_cmd = format!("cd '{}' && ", working_dir);
+            let mut claude_cmd = format!("cd '{}' && ", &self.working_directory);
 
             // Set API key as environment variable if specified
             if let Some(ref api_key) = options.api_key {

src/lib/stores/conversations.ts

@@ -8,6 +8,7 @@ import type {
 } from "$lib/types/messages";
 import type { CharacterState } from "$lib/types/states";
 import { cleanupConversationTracking } from "$lib/tauri";
+import { normalizePath } from "$lib/utils/paths";
 import { characterState } from "$lib/stores/character";
 import { sessionsStore } from "$lib/stores/sessions";
 
@@ -388,7 +389,7 @@ function createConversationsStore() {
       conversations.update((convs) => {
         const conv = convs.get(activeId);
         if (conv) {
-          conv.workingDirectory = dir;
+          conv.workingDirectory = normalizePath(dir);
           conv.lastActivityAt = new Date();
         }
         return convs;
@@ -399,7 +400,7 @@ function createConversationsStore() {
       conversations.update((convs) => {
         const conv = convs.get(conversationId);
         if (conv) {
-          conv.workingDirectory = dir;
+          conv.workingDirectory = normalizePath(dir);
           conv.lastActivityAt = new Date();
         }
         return convs;

src/lib/stores/editor.ts

@@ -1,6 +1,7 @@
 import { writable, derived, get } from "svelte/store";
 import { invoke } from "@tauri-apps/api/core";
 import type { EditorState, EditorTab, FileEntry } from "$lib/types/editor";
+import { normalizePath, joinPath, getParentPath, getFilename } from "$lib/utils/paths";
 
 const defaultState: EditorState = {
   tabs: [],
@@ -158,7 +159,7 @@ function createEditorStore() {
 
     try {
       const content = await invoke<string>("read_file_content", { path: filePath });
-      const fileName = filePath.split(/[/\\]/).pop() || "untitled";
+      const fileName = getFilename(filePath) || "untitled";
       const language = getLanguageFromPath(filePath);
       const newTab: EditorTab = {
         id: generateTabId(),
@@ -247,7 +248,7 @@ function createEditorStore() {
   }
 
   async function createFile(parentPath: string, fileName: string): Promise<boolean> {
-    const filePath = `${parentPath}/${fileName}`;
+    const filePath = joinPath(parentPath, fileName);
     try {
       await invoke("create_file", { path: filePath });
       // Refresh the parent directory
@@ -261,7 +262,7 @@ function createEditorStore() {
   }
 
   async function createDirectory(parentPath: string, dirName: string): Promise<boolean> {
-    const dirPath = `${parentPath}/${dirName}`;
+    const dirPath = joinPath(parentPath, dirName);
     try {
       await invoke("create_directory", { path: dirPath });
       // Refresh the parent directory
@@ -284,7 +285,7 @@ function createEditorStore() {
         closeTab(openTab.id);
       }
       // Refresh the parent directory
-      const parentPath = filePath.substring(0, filePath.lastIndexOf("/"));
+      const parentPath = getParentPath(filePath);
       await refreshDirectory(parentPath);
       return true;
     } catch (error) {
@@ -299,10 +300,11 @@ function createEditorStore() {
       await invoke("delete_directory", { path: dirPath });
       // Close any tabs that are in this directory
       const currentState = get(state);
-      const tabsToClose = currentState.tabs.filter((t) => t.filePath.startsWith(dirPath + "/"));
+      const normalizedDirPath = normalizePath(dirPath);
+      const tabsToClose = currentState.tabs.filter((t) => normalizePath(t.filePath).startsWith(normalizedDirPath + "/"));
       tabsToClose.forEach((tab) => closeTab(tab.id));
       // Refresh the parent directory
-      const parentPath = dirPath.substring(0, dirPath.lastIndexOf("/"));
+      const parentPath = getParentPath(dirPath);
       await refreshDirectory(parentPath);
       return true;
     } catch (error) {
@@ -341,8 +343,8 @@ function createEditorStore() {
   }
 
   async function renamePath(oldPath: string, newName: string): Promise<boolean> {
-    const parentPath = oldPath.substring(0, oldPath.lastIndexOf("/"));
-    const newPath = `${parentPath}/${newName}`;
+    const parentPath = getParentPath(oldPath);
+    const newPath = joinPath(parentPath, newName);
 
     try {
       await invoke("rename_path", { oldPath, newPath });
@@ -359,12 +361,14 @@ function createEditorStore() {
               fileName: newName,
             };
           }
-          if (t.filePath.startsWith(oldPath + "/")) {
+          const normalizedOldPath = normalizePath(oldPath);
+          const normalizedFilePath = normalizePath(t.filePath);
+          if (normalizedFilePath.startsWith(normalizedOldPath + "/")) {
             // File is inside a renamed directory
-            const relativePath = t.filePath.substring(oldPath.length);
+            const relativePath = normalizedFilePath.substring(normalizedOldPath.length);
             return {
               ...t,
-              filePath: newPath + relativePath,
+              filePath: normalizePath(newPath + relativePath),
             };
           }
           return t;

src/lib/tauri.ts

@@ -18,6 +18,7 @@ import {
   handleConnectionStatusChange,
   handleNewUserMessage,
 } from "$lib/notifications/rules";
+import { normalizePath } from "$lib/utils/paths";
 
 interface StateChangePayload {
   state: CharacterState;
@@ -290,12 +291,15 @@ export async function initializeTauriListeners() {
   const cwdUnlisten = await listen<WorkingDirectoryPayload>("claude:cwd", (event) => {
     const { directory, conversation_id } = event.payload;
 
+    // Normalize path separators to forward slashes
+    const normalizedDirectory = normalizePath(directory);
+
     // Store working directory for the correct conversation
     if (conversation_id) {
-      claudeStore.setWorkingDirectoryForConversation(conversation_id, directory);
+      claudeStore.setWorkingDirectoryForConversation(conversation_id, normalizedDirectory);
     } else {
       // Fallback to active conversation if no conversation_id
-      claudeStore.setWorkingDirectory(directory);
+      claudeStore.setWorkingDirectory(normalizedDirectory);
     }
   });
   unlisteners.push(cwdUnlisten);

src/lib/utils/paths.test.ts

@@ -0,0 +1,98 @@
+import { describe, it, expect } from "vitest";
+import { normalizePath, joinPath, getParentPath, getFilename } from "./paths";
+
+describe("paths utilities", () => {
+  describe("normalizePath", () => {
+    it("should normalize Windows paths", () => {
+      expect(normalizePath("C:\\Users\\test")).toBe("C:/Users/test");
+      expect(normalizePath("path\\to\\file")).toBe("path/to/file");
+      expect(normalizePath("C:\\Users\\test\\file.txt")).toBe("C:/Users/test/file.txt");
+    });
+
+    it("should leave Unix paths unchanged", () => {
+      expect(normalizePath("/home/user")).toBe("/home/user");
+      expect(normalizePath("path/to/file")).toBe("path/to/file");
+      expect(normalizePath("/usr/local/bin")).toBe("/usr/local/bin");
+    });
+
+    it("should handle mixed separators", () => {
+      expect(normalizePath("mixed\\path/file")).toBe("mixed/path/file");
+      expect(normalizePath("C:\\Users/test\\mixed/path")).toBe("C:/Users/test/mixed/path");
+    });
+
+    it("should handle empty strings", () => {
+      expect(normalizePath("")).toBe("");
+    });
+  });
+
+  describe("joinPath", () => {
+    it("should join path segments with forward slashes", () => {
+      expect(joinPath("parent", "child")).toBe("parent/child");
+      expect(joinPath("/home", "user", "documents")).toBe("/home/user/documents");
+      expect(joinPath("C:", "Users", "test")).toBe("C:/Users/test");
+    });
+
+    it("should filter out empty segments", () => {
+      expect(joinPath("parent", "", "child")).toBe("parent/child");
+      expect(joinPath("", "home", "")).toBe("home");
+      expect(joinPath("", "", "")).toBe("");
+    });
+
+    it("should normalize mixed separators in segments", () => {
+      expect(joinPath("parent\\dir", "child")).toBe("parent/dir/child");
+      expect(joinPath("C:\\Users", "test\\file")).toBe("C:/Users/test/file");
+    });
+  });
+
+  describe("getParentPath", () => {
+    it("should get parent directory of Unix paths", () => {
+      expect(getParentPath("/home/user/file.txt")).toBe("/home/user");
+      expect(getParentPath("/home/user/")).toBe("/home");
+      expect(getParentPath("/home")).toBe("/");
+      expect(getParentPath("/")).toBe("/");
+    });
+
+    it("should get parent directory of Windows paths", () => {
+      expect(getParentPath("C:\\Users\\test\\file.txt")).toBe("C:/Users/test");
+      expect(getParentPath("C:\\Users\\test")).toBe("C:/Users");
+      expect(getParentPath("C:\\")).toBe("C:");
+    });
+
+    it("should handle relative paths", () => {
+      expect(getParentPath("parent/child/file.txt")).toBe("parent/child");
+      expect(getParentPath("file.txt")).toBe(".");
+      expect(getParentPath("")).toBe(".");
+    });
+
+    it("should handle paths with trailing slashes", () => {
+      expect(getParentPath("/home/user/")).toBe("/home");
+      expect(getParentPath("parent/child/")).toBe("parent");
+    });
+  });
+
+  describe("getFilename", () => {
+    it("should extract filename from Unix paths", () => {
+      expect(getFilename("/home/user/file.txt")).toBe("file.txt");
+      expect(getFilename("/usr/local/bin/node")).toBe("node");
+      expect(getFilename("/home/user/")).toBe("");
+    });
+
+    it("should extract filename from Windows paths", () => {
+      expect(getFilename("C:\\Users\\test\\file.txt")).toBe("file.txt");
+      expect(getFilename("C:\\Program Files\\app.exe")).toBe("app.exe");
+      expect(getFilename("D:\\folder\\")).toBe("");
+    });
+
+    it("should handle relative paths", () => {
+      expect(getFilename("parent/child/file.txt")).toBe("file.txt");
+      expect(getFilename("file.txt")).toBe("file.txt");
+      expect(getFilename("")).toBe("");
+    });
+
+    it("should handle paths without filename", () => {
+      expect(getFilename("/home/user/")).toBe("");
+      expect(getFilename("folder/")).toBe("");
+      expect(getFilename("/")).toBe("");
+    });
+  });
+});

src/lib/utils/paths.ts

@@ -0,0 +1,67 @@
+/**
+ * Normalize path separators to forward slashes for consistent handling across platforms
+ */
+export function normalizePath(path: string): string {
+  // Replace all backslashes with forward slashes
+  return path.replace(/\\/g, "/");
+}
+
+/**
+ * Join path segments with forward slashes
+ */
+export function joinPath(...segments: string[]): string {
+  // Filter out empty segments
+  const filtered = segments.filter((s) => s);
+  // Join with forward slash and normalize
+  return normalizePath(filtered.join("/"));
+}
+
+/**
+ * Get the parent directory of a path
+ */
+export function getParentPath(path: string): string {
+  let normalized = normalizePath(path);
+
+  // Remove trailing slash if present (unless it's the root)
+  if (normalized.endsWith("/") && normalized.length > 1) {
+    normalized = normalized.slice(0, -1);
+  }
+
+  // Handle Windows drive roots (e.g., "C:" or "C:/")
+  if (/^[A-Za-z]:$/.test(normalized)) {
+    return normalized; // Drive root has no parent
+  }
+
+  const lastSlash = normalized.lastIndexOf("/");
+  if (lastSlash === -1) {
+    // No slash found - could be just a filename or Windows drive letter
+    if (/^[A-Za-z]:/.test(normalized)) {
+      // It's a Windows path like "C:file.txt" - parent is "C:"
+      return normalized.substring(0, 2);
+    }
+    return ".";
+  }
+  if (lastSlash === 0) {
+    return "/";
+  }
+
+  // Check if parent would be a Windows drive root
+  const parent = normalized.substring(0, lastSlash);
+  if (/^[A-Za-z]:$/.test(parent)) {
+    return parent;
+  }
+
+  return parent;
+}
+
+/**
+ * Get the filename from a path
+ */
+export function getFilename(path: string): string {
+  const normalized = normalizePath(path);
+  const lastSlash = normalized.lastIndexOf("/");
+  if (lastSlash === -1) {
+    return normalized;
+  }
+  return normalized.substring(lastSlash + 1);
+}