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/commands.rs

@@ -1167,6 +1167,76 @@ pub async fn close_application(app_handle: AppHandle) -> Result<(), String> {
     Ok(())
 }
 
+#[derive(serde::Serialize)]
+pub struct MemoryFilesResponse {
+    pub files: Vec<String>,
+}
+
+#[tauri::command]
+pub async fn list_memory_files() -> Result<MemoryFilesResponse, String> {
+    use std::fs;
+
+    // Get the .claude directory in the user's home
+    let home_dir = match dirs::home_dir() {
+        Some(dir) => dir,
+        None => return Err("Could not find home directory".to_string()),
+    };
+
+    let claude_dir = home_dir.join(".claude");
+    let projects_dir = claude_dir.join("projects");
+
+    if !projects_dir.exists() {
+        return Ok(MemoryFilesResponse { files: Vec::new() });
+    }
+
+    let mut memory_files = Vec::new();
+
+    // Recursively find all memory directories
+    fn find_memory_files(dir: &std::path::Path, files: &mut Vec<String>) -> std::io::Result<()> {
+        if !dir.is_dir() {
+            return Ok(());
+        }
+
+        for entry in fs::read_dir(dir)? {
+            let entry = entry?;
+            let path = entry.path();
+
+            if path.is_dir() {
+                // Check if this is a "memory" directory
+                if path.file_name().and_then(|n| n.to_str()) == Some("memory") {
+                    // List all files in the memory directory
+                    for mem_entry in fs::read_dir(&path)? {
+                        let mem_entry = mem_entry?;
+                        let mem_path = mem_entry.path();
+
+                        if mem_path.is_file() {
+                            if let Some(path_str) = mem_path.to_str() {
+                                files.push(path_str.to_string());
+                            }
+                        }
+                    }
+                } else {
+                    // Recurse into subdirectories
+                    find_memory_files(&path, files)?;
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    if let Err(e) = find_memory_files(&projects_dir, &mut memory_files) {
+        return Err(format!("Failed to list memory files: {}", e));
+    }
+
+    // Sort files alphabetically
+    memory_files.sort();
+
+    Ok(MemoryFilesResponse {
+        files: memory_files,
+    })
+}
+
 #[cfg(test)]
 mod tests {
     use super::*;

src-tauri/src/lib.rs

@@ -197,6 +197,7 @@ pub fn run() {
             stop_discord_rpc,
             log_discord_rpc,
             close_application,
+            list_memory_files,
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");

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();