gitpane 0.15.1

Multi-repo Git workspace dashboard TUI
Documentation
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Closes #<issue number>

## In simple terms

One or two sentences a user (not a git-internals expert) would understand:
what changes on screen or in behavior?

## Problem

What is wrong and why it matters. Include repro steps or observed output for bugs.

## Fix

What the change does and why this approach.

## Test

How the change was verified: new or updated tests, full suite result, clippy.