feat: Add comprehensive UI improvements and session management features

COMMIT_MESSAGE.txt

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+Feature: Add session deletion functionality
+
+Implements session deletion feature with delete button on hover for each session card.
+
+Addresses issue #305 where users requested the ability to delete unnecessary sessions.
+
+## Changes:
+- **Backend**: Added `delete_session` Rust command to remove .jsonl files and associated todo data
+- **Frontend**: Added `deleteSession` API method with proper error handling
+- **UI**: Added Trash2 icon delete button that appears on session card hover
+- **UX**: Added confirmation dialog before deletion to prevent accidents
+- **State**: Updated local state management to remove sessions immediately after deletion
+
+## Features:
+- Hover-to-reveal delete button for clean UI
+- Confirmation dialog with session details
+- Deletes both session file and associated todo data
+- Proper error handling and user feedback
+- Follows project coding standards and documentation guidelines
+
+## Testing:
+- ✅ Code compiles without errors
+- ✅ Follows project linting standards (cargo fmt, cargo clippy)
+- ✅ Comprehensive documentation added
+- ✅ UI integration tested
+
+
+Fixes #305

CONTRIBUTION_READY.md

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+# Session Deletion Feature - Ready for Contribution
+
+## 📋 Overview
+This feature adds a delete button to session cards that allows users to permanently delete session files, addressing [Issue #305](https://github.com/getAsterisk/opcode/issues/305).
+
+## 🎯 Implementation Details
+
+### Backend Changes
+- **File**: `src-tauri/src/commands/claude.rs`
+- **Added**: `delete_session` command with comprehensive documentation
+- **Functionality**: Deletes both `.jsonl` session files and associated todo data
+
+### Frontend Changes
+- **File**: `src/lib/api.ts`
+- **Added**: `deleteSession` method with proper error handling
+- **Integration**: Full TypeScript support with JSDoc documentation
+
+### UI Changes
+- **File**: `src/components/SessionList.tsx`
+- **Added**: Hover-reveal delete button with Trash2 icon
+- **UX**: Confirmation dialog before deletion
+- **Styling**: Follows project design patterns
+
+### State Management
+- **File**: `src/stores/sessionStore.ts`
+- **Updated**: Real API integration replacing placeholder
+- **File**: `src/components/TabContent.tsx`
+- **Added**: `onSessionDelete` callback for immediate UI updates
+
+## 🚀 How to Contribute
+
+### Step 1: Fork the Repository
+1. Go to https://github.com/getAsterisk/opcode
+2. Click "Fork" to create your own fork
+3. Clone your fork locally
+
+### Step 2: Apply Changes
+From this directory, copy all the modified files to your fork:
+
+```bash
+# Copy the changes to your fork
+cp -r src-tauri/src/commands/claude.rs YOUR_FORK/src-tauri/src/commands/claude.rs
+cp -r src-tauri/src/main.rs YOUR_FORK/src-tauri/src/main.rs
+cp -r src/lib/api.ts YOUR_FORK/src/lib/api.ts
+cp -r src/components/SessionList.tsx YOUR_FORK/src/components/SessionList.tsx
+cp -r src/components/TabContent.tsx YOUR_FORK/src/components/TabContent.tsx
+cp -r src/stores/sessionStore.ts YOUR_FORK/src/stores/sessionStore.ts
+```
+
+### Step 3: Create Pull Request
+1. Create a branch: `git checkout -b feature/session-deletion-functionality`
+2. Commit changes with the provided commit message
+3. Push to your fork
+4. Create PR from your fork to getAsterisk/opcode
+
+## 📝 Pull Request Template
+
+**Title**: `Feature: Add session deletion functionality`
+
+**Description**:
+```
+Implements session deletion feature with delete button on hover for each session card.
+
+Addresses issue #305 where users requested the ability to delete unnecessary sessions.
+
+## Changes:
+- **Backend**: Added `delete_session` Rust command to remove .jsonl files and associated todo data
+- **Frontend**: Added `deleteSession` API method with proper error handling
+- **UI**: Added Trash2 icon delete button that appears on session card hover
+- **UX**: Added confirmation dialog before deletion to prevent accidents
+- **State**: Updated local state management to remove sessions immediately after deletion
+
+## Features:
+- Hover-to-reveal delete button for clean UI
+- Confirmation dialog with session details
+- Deletes both session file and associated todo data
+- Proper error handling and user feedback
+- Follows project coding standards and documentation guidelines
+
+## Testing:
+- ✅ Code compiles without errors
+- ✅ Follows project linting standards (cargo fmt, cargo clippy)
+- ✅ Comprehensive documentation added
+- ✅ UI integration tested
+
+Fixes #305
+```
+
+## ✅ Code Quality Checklist
+- [x] Rust code formatted with `cargo fmt`
+- [x] Code follows project conventions
+- [x] Comprehensive documentation added
+- [x] Error handling implemented
+- [x] TypeScript integration complete
+- [x] UI follows design patterns
+- [x] State management updated
+- [x] No breaking changes
+
+## 🎯 Benefits
+- **User Requested**: Directly addresses Issue #305
+- **Clean Implementation**: Follows all project standards
+- **Non-Breaking**: Adds new functionality without affecting existing features
+- **Well Documented**: Comprehensive docs and comments
+- **Error Handling**: Robust error handling and user feedback
+
+This feature is ready for immediate integration into the opcode project!

contribute.sh

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+#!/bin/bash
+
+echo "🚀 Session Deletion Feature - Contribution Helper"
+echo "================================================="
+echo ""
+
+# Check if user provided fork URL
+if [ $# -eq 0 ]; then
+    echo "Usage: ./contribute.sh <YOUR_FORK_URL>"
+    echo "Example: ./contribute.sh https://github.com/yourusername/opcode.git"
+    echo ""
+    echo "Steps:"
+    echo "1. Fork https://github.com/getAsterisk/opcode to your GitHub account"
+    echo "2. Run this script with your fork URL"
+    exit 1
+fi
+
+FORK_URL=$1
+FORK_DIR="opcode-fork"
+
+echo "📋 Setting up contribution for: $FORK_URL"
+echo ""
+
+# Clone the fork
+echo "🔄 Cloning your fork..."
+git clone "$FORK_URL" "$FORK_DIR"
+cd "$FORK_DIR"
+
+# Create feature branch
+echo "🌿 Creating feature branch..."
+git checkout -b feature/session-deletion-functionality
+
+# Copy our changes
+echo "📁 Copying session deletion feature files..."
+cp ../src-tauri/src/commands/claude.rs src-tauri/src/commands/claude.rs
+cp ../src-tauri/src/main.rs src-tauri/src/main.rs
+cp ../src/lib/api.ts src/lib/api.ts
+cp ../src/components/SessionList.tsx src/components/SessionList.tsx
+cp ../src/components/TabContent.tsx src/components/TabContent.tsx
+cp ../src/stores/sessionStore.ts src/stores/sessionStore.ts
+
+# Commit changes
+echo "💾 Committing changes..."
+git add .
+git commit -F ../COMMIT_MESSAGE.txt
+
+# Push to fork
+echo "⬆️ Pushing to your fork..."
+git push -u origin feature/session-deletion-functionality
+
+echo ""
+echo "✅ SUCCESS! Your session deletion feature is ready!"
+echo ""
+echo "🔗 Next steps:"
+echo "1. Go to your fork on GitHub: ${FORK_URL%.*}"
+echo "2. Click 'Compare & pull request' button"
+echo "3. Set base repository to: getAsterisk/opcode"
+echo "4. Set base branch to: main"
+echo "5. Use the title: 'Feature: Add session deletion functionality'"
+echo "6. Copy the description from COMMIT_MESSAGE.txt"
+echo "7. Submit your pull request!"
+echo ""
+echo "📋 This PR will address Issue #305 and provide the session deletion feature users have requested!"