feat: Add persistent storage for agent mode conversations

[edenreich]

Implements automatic saving of agent conversations to database. Adds --no-save flag to disable persistence. Agent sessions now appear in conversation history alongside chat sessions.

And it is possible to continue a session that was started in agent mode, in chat mode.

Changes

Key Features:

• Automatic persistence: Agent conversations are automatically saved to the configured storage backend (SQLite by default)
• Complete session tracking: Each message, tool execution, and token usage is persisted
• Optional saving: Added --no-save flag to disable saving for specific runs (useful for testing or temporary sessions)
• Unified history: Agent sessions now appear in conversation history alongside chat sessions

Technical Changes:

1. Modified conversation repository interface (internal/domain/interfaces.go):

   • Added SaveAgentConversation method to support agent session persistence
   • Updated GetConversations to include agent sessions in history

2. Enhanced SQLite storage (internal/infra/storage/sqlite.go):

   • Added agent conversation table schema
   • Implemented agent session persistence logic
   • Updated queries to handle both chat and agent conversations

3. Updated agent command (cmd/agent.go):

   • Added --no-save flag to disable persistence
   • Integrated with persistent conversation service
   • Automatic saving of agent sessions to database

4. Enhanced conversation services (internal/services/conversation.go, internal/services/persistent_conversation.go):

   • Unified handling of chat and agent conversations
   • Added agent-specific persistence logic
   • Updated conversation listing to include agent sessions

5. Updated documentation (CLAUDE.md):

   • Documented the new --no-save flag
   • Added information about agent session persistence
   • Updated usage examples

Benefits:

• Better user experience: Users can now review and continue agent sessions from history
• Improved debugging: Complete session logs available for troubleshooting
• Consistent behavior: Agent sessions work like chat sessions with full persistence
• Flexibility: --no-save flag provides control over when to persist sessions

Testing:

• Updated mock repository (tests/mocks/domain/fake_conversation_repository.go)
• Modified shortcut handler (internal/handlers/chat_shortcut_handler.go)
• Updated core shortcuts (internal/shortcuts/core.go)

This feature brings agent mode to parity with chat mode in terms of persistence and history management, making it easier for users to work with long-running agent sessions.

[ig-semantic-release-bot]

🎉 This PR is included in version 0.88.0 🎉

The release is available on GitHub release

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