tools: add repo creation script and helper README

tools/README.md

@@ -0,0 +1,21 @@
+# Railiance Tools
+
+## create_railiance_repo.sh
+Creates a new Railiance repo in Gitea (user or org), with a minimal scaffold.
+
+**Requires:** `~/.railiance_gitea.conf`
+
+```bash
+GITEA_URL="https://git.example.com"
+GITEA_USER="your-username"
+GITEA_ORG=""   # or your org name
+GITEA_TOKEN="xxxxxxxxxxxxxxxx"  # scopes: read:user + write:repository
+
+
+## Usage
+./tools/create_railiance_repo.sh
+./tools/create_railiance_repo.sh --repo my-repo --public --desc "My desc"
+./tools/create_railiance_repo.sh --org coulomb
+
+## Misc
+The script relies on your Git credential helper or SSH key for the initial push.