docs: new root as prior history lost (orphan + GC); ~215 commits not recoverable

2026/2026-07-13--castopod-boot-branding.md

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+# Castopod — boot + branding (2026-07-13)
+
+Site: **https://castopod.hacktivism.ch/** · `~/koopa-castopod/` · Caddy **:9020**
+
+## Boot
+
+User systemd + linger (like Bonfire):
+
+```bash
+scripts/castopod/install-systemd.sh
+systemctl --user status container-koopa-castopod{,-mariadb,-redis}.service
+```
+
+Units: `configs/castopod/container-koopa-castopod*.service`
+
+## Branding
+
+Official settings: https://docs.castopod.org/main/en/user-guide/instance/settings/  
+Docker: https://docs.castopod.org/main/en/getting-started/docker/
+
+| Item | Host choice |
+|------|-------------|
+| Site icon | Magician logo (`configs/castopod/assets/img/`) |
+| Theme | Castopod accent **amber** |
+| Optional CSS | `assets/css/theme-hacktivism-overlay.css` (not upstream) |
+
+```bash
+scripts/castopod/apply-branding.sh
+```
+
+Stack/accounts: `2026/2026-07-09--castopod-content.md`.