[FEATURE] Add option to delete conversations from RECENTS list #21619

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

Feature Request: Add option to delete conversations from RECENTS list

Problem

In OpenCode 0.3.6, there is no way to delete individual conversations or clear the RECENTS list. Users have no control over their conversation history in the UI.

Use Case

• Users want to maintain privacy by removing old/unwanted conversations
• Keep the RECENTS list clean when working on different projects
• Remove conversations that are no longer relevant

Proposed Solution

Add a delete/remove option for individual conversations in the RECENTS list:

1. Right-click context menu option: "Delete" or "Remove"
2. Or swipe-to-delete gesture on touch devices
3. Or a bulk "Clear All" option in settings

Expected Behavior

• Delete single conversation: removes only that conversation
• Clear All: removes all conversations from RECENTS (with confirmation dialog)

Additional Context

• Version: 0.3.6
• Platform: macOS