[Bugs] Sidebar repo customization leaks to another repo with the same folder name

**Mood:** 😔
**Category:** Bugs

When I customize the name or color of a project, the customization leaks to different projects with the same top level folder name.

For example - I have omr1/src as one repo, and omr2/src as a second, different repo. But their name / color customizations get incorrectly shared.

Here I only customized omr2 - notice both are red now.

I'm guessing the bug is that only the top level folder name is considered when matching where customizations get applied.

---
| Field | Value |
| --- | --- |
| App version | 1.0.16 |
| OS | macOS 26.5.1 |
| Theme | Noctis Azureus |
| Path | /chat |
| Tenure | Week 8 |

Reproduce the issue with two repositories such as omr1/src and omr2/src, then trace how sidebar name and color customizations identify repositories. Done means changing the customization for one repository no longer changes another repository with the same top-level folder name.

索引モデルが issue の本文から書いたものです。