feat: add memory system activity display

Implements issue #118 to display auto-memory system operations and
provide a browser for viewing memory files.

Backend changes:
- Detect memory file operations in format_tool_description()
- Add emoji icons (📝/💾) for memory Read/Write/Edit operations
- Add list_memory_files() Tauri command to find all memory files
- Add 4 new tests for memory detection logic
- Update Tauri capabilities to allow reading .claude directory

Frontend changes:
- Create MemoryBrowserPanel component with file list and viewer
- Add memory panel to main app layout
- Support Markdown rendering of memory file contents
- Add loading states and error handling

Testing:
- All 354 Rust tests passing
- TypeScript type-checks pass

Co-Authored-By: Hikari <hikari@nhcarrigan.com>

src-tauri/src/wsl_bridge.rs

@@ -1505,10 +1505,21 @@ fn get_tool_state(tool_name: &str) -> CharacterState {
 }
 
 fn format_tool_description(name: &str, input: &serde_json::Value) -> String {
+    // Helper function to check if a path is a memory file
+    fn is_memory_path(path: &str) -> bool {
+        path.contains("/.claude/") && (path.contains("/memory/") || path.ends_with("/MEMORY.md"))
+    }
+
     match name {
         "Read" => {
             if let Some(path) = input.get("file_path").and_then(|v| v.as_str()) {
-                format!("Reading file: {}", path)
+                if is_memory_path(path) {
+                    // Extract just the filename for cleaner display
+                    let filename = path.split('/').last().unwrap_or(path);
+                    format!("📝 Reading memory: {}", filename)
+                } else {
+                    format!("Reading file: {}", path)
+                }
             } else {
                 "Reading file...".to_string()
             }
@@ -1527,9 +1538,26 @@ fn format_tool_description(name: &str, input: &serde_json::Value) -> String {
                 "Searching in files...".to_string()
             }
         }
-        "Edit" | "Write" => {
+        "Edit" => {
             if let Some(path) = input.get("file_path").and_then(|v| v.as_str()) {
-                format!("Editing: {}", path)
+                if is_memory_path(path) {
+                    let filename = path.split('/').last().unwrap_or(path);
+                    format!("💾 Updating memory: {}", filename)
+                } else {
+                    format!("Editing: {}", path)
+                }
+            } else {
+                "Editing file...".to_string()
+            }
+        }
+        "Write" => {
+            if let Some(path) = input.get("file_path").and_then(|v| v.as_str()) {
+                if is_memory_path(path) {
+                    let filename = path.split('/').last().unwrap_or(path);
+                    format!("💾 Writing memory: {}", filename)
+                } else {
+                    format!("Editing: {}", path)
+                }
             } else {
                 "Editing file...".to_string()
             }
@@ -1714,6 +1742,39 @@ mod tests {
         assert_eq!(desc, "Using tool: CustomTool");
     }
 
+    #[test]
+    fn test_format_tool_description_memory_read() {
+        let input =
+            serde_json::json!({"file_path": "/home/user/.claude/projects/test/memory/MEMORY.md"});
+        let desc = format_tool_description("Read", &input);
+        assert_eq!(desc, "📝 Reading memory: MEMORY.md");
+    }
+
+    #[test]
+    fn test_format_tool_description_memory_write() {
+        let input = serde_json::json!(
+            {"file_path": "/home/user/.claude/projects/test/memory/notes.md"}
+        );
+        let desc = format_tool_description("Write", &input);
+        assert_eq!(desc, "💾 Writing memory: notes.md");
+    }
+
+    #[test]
+    fn test_format_tool_description_memory_edit() {
+        let input = serde_json::json!(
+            {"file_path": "/home/user/.claude/projects/test/memory/patterns.md"}
+        );
+        let desc = format_tool_description("Edit", &input);
+        assert_eq!(desc, "💾 Updating memory: patterns.md");
+    }
+
+    #[test]
+    fn test_format_tool_description_non_memory_read() {
+        let input = serde_json::json!({"file_path": "/home/user/code/test.txt"});
+        let desc = format_tool_description("Read", &input);
+        assert_eq!(desc, "Reading file: /home/user/code/test.txt");
+    }
+
     #[test]
     fn test_wsl_bridge_new() {
         let bridge = WslBridge::new();