Document Sentry self-hosted deployment

docs/decisions.md

@@ -625,6 +625,34 @@ Implemented
 
 ---
 
+## 2026-07-08 - Document Sentry As Upstream Self-Hosted Deployment
+
+Decision:
+
+Run Sentry using the upstream self-hosted `install.sh` workflow and expose it at `sentry.silveressence.net` through Nginx Proxy Manager.
+
+Implementation:
+
+* Use the upstream Sentry self-hosted installer layout.
+* Treat `sentry-self-hosted` as one atomic deployment unit.
+* Keep Sentry backing services isolated on `sentry-self-hosted_default`.
+* Route public access through the Sentry nginx or web entry layer.
+* Do not force Sentry into the standard SilverLinux `slcompose` and Infisical pattern.
+
+Reason:
+
+* Sentry is a large distributed application with many tightly coupled services.
+* The upstream self-hosted installer manages required configuration and generated secrets.
+* Preserving the upstream layout reduces maintenance risk during upgrades.
+
+Status:
+
+```text
+Implemented
+```
+
+---
+
 ## Future Decisions
 
 Document future decisions using the following template: