History tabs opened from query history panel get cryptic auto-generated names

## Problem
When a query history item is clicked, it opens in a new tab whose name is a cryptic auto-generated ID such as `history_177713...`. This makes it impossible to distinguish history tabs from each other or from regular query tabs.

## Steps to reproduce
1. Click the history icon (clock) in the toolbar
2. Click any history entry
3. A new tab opens — the tab title is something like `history_177713...` (appears to be a timestamp or UUID)

## Expected behaviour
The tab name should be a meaningful identifier. Options in order of preference:
- A truncated SQL snippet: `SELECT * FROM custome...`
- The timestamp: `History · 19h ago`
- At minimum, a sequential label: `History 1`, `History 2`

The cryptic ID conveys no information and is indistinguishable when multiple history tabs are open.