change repo path from /opt to /opt/hantim

/opt already exists on Linux systems and git clone refuses to clone
into a non-empty directory.

README.md

@@ -1,7 +1,7 @@
 # hantim-server
 
 Server provisioning and app management for the hantim webserver. This repo
-lives at `/opt` on the server and contains Docker Compose configs, deploy
+lives at `/opt/hantim` on the server and contains Docker Compose configs, deploy
 scripts, and Gitea Actions workflows for each app.
 
 ## Repo structure
@@ -26,9 +26,9 @@ On a fresh Rocky Linux 9 (or compatible) install:
 ```bash
 dnf install -y epel-release
 dnf install -y git git-crypt
-git clone <repo-url> /opt
+git clone <repo-url> /opt/hantim
 git-crypt unlock /path/to/git-crypt-key
-/opt/setup.sh
+/opt/hantim/setup.sh
 ```
 
 `setup.sh` installs Docker, creates a `deploy` user, sets up the shared Docker