docs: add Workflow section to AGENTS.md + update compose submodule

- Add Workflow conventions section to infra AGENTS.md
- Update compose submodule to feat/hermes-workers (adds compose AGENTS.md)

AGENTS.md

@@ -25,3 +25,12 @@ This document outlines the development conventions for this NixOS-based infrastr
 - **Secrets:** Secrets are managed with `agenix`. Edit encrypted files with `agenix -e <file>`.
 - **Modularity:** Structure configurations into logical, reusable modules under `modules/`. New modules should be registered in `modules/nixos/default.nix` to be available to all hosts.
 - **Error Handling:** Ensure Nix expressions are robust and handle potential evaluation errors gracefully.
+
+## Workflow
+
+- New feature → clean branch from `origin/master` → push → PR on Gitea
+- Branch naming: `feat/description` (features), `fix/description` (bugs/docs)
+- Always branch from `origin/master`, never from another feature branch
+- Submodule changes: commit submodule update in parent repo (the parent commit pins the submodule commit)
+- PR title should describe the change; body should explain motivation + summary
+- After PR merge, delete the feature branch

hosts/lazyworkhorse/configuration.nix

@@ -474,7 +474,7 @@
   services.openssh.settings = {
     PermitRootLogin = "no";
     MaxAuthTries = 3;
-    MaxSessions = 10;
+    MaxSessions = 20;
     LoginGraceTime = 30;
     ClientAliveInterval = 300;
     ClientAliveCountMax = 2;