Freeze 7.6.0 release candidate and move docs out of repo

Ariver

2026-05-22 8478c55e513bbbb4b1676d1d9207f7feb2509465

 Apptag/PreferencesView.swift

@@ -767,7 +767,7 @@
                        Text("万物之中，希望最美")
                            .font(.caption)
                            .foregroundStyle(.secondary)
                        Text("永桔@2026-18602102518")
                        Text("永桔@shanghai3168@gmail.com")
                            .font(.caption)
                            .foregroundStyle(.secondary)
                    }