Feature Request: Batch select and delete chat history in Claude.ai GUI

Feature Request

Use Case: Users accumulate hundreds of conversations over time. Many become obsolete (test chats, abandoned threads, duplicates). Currently, deletion requires opening each conversation individually and deleting one-by-one.

Problem:

• No multi-select capability in conversation list
• No batch delete operation
• Users with 200+ conversations face tedious manual cleanup
• No way to filter/sort conversations for bulk operations
• Conversation list becomes unmanageable over time

Proposed Solution:
Add batch operations to the Claude.ai conversation list:

1. Checkbox selection mode (select all / select some)
2. Batch delete selected conversations
3. Optional: Filter by date range before selection
4. Optional: Search within conversation list
5. Confirmation dialog showing count before permanent deletion

Benefit:

• Reduces conversation management from hours to minutes
• Enables users to maintain organized chat history
• Supports privacy cleanup (remove sensitive conversations)
• Improves UX for power users

Related: Issue #18412 (Bulk export) - these features complement each other for full conversation lifecycle management.

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Filed via Claude Code on behalf of user