diff --git a/.gitignore b/.gitignore
index 5d48a4c..26e9251 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,9 @@ Thumbs.db
 # PHP CS Fixer cache
 .php-cs-fixer.cache
 
+# Local dev env (cwm-build-tools build.properties)
+build.properties
+
 # Build outputs (generated from build/media_source/ via npm run build)
 media/lib_cwmscripture/js/*.min.js
 media/lib_cwmscripture/js/*.min.js.map
diff --git a/build.properties.tmpl b/build.properties.tmpl
new file mode 100644
index 0000000..98cd94e
--- /dev/null
+++ b/build.properties.tmpl
@@ -0,0 +1,42 @@
+; build.properties — local Joomla installs for cwm-build-tools dev commands.
+;
+; This file is the per-developer mate to cwm-build.config.json:
+;   - cwm-build.config.json (committed) — what the project IS:
+;       extension layout, manifest paths, optional dev.links[].
+;   - build.properties (gitignored) — where YOUR dev environment runs:
+;       paths to your Joomla installs, DB credentials, admin credentials.
+;
+; To set up the first time:
+;   cp build.properties.tmpl build.properties
+; Then either edit by hand or run the wizard:
+;   composer setup
+;
+; ALWAYS keep this gitignored. It contains DB and admin passwords.
+
+; Comma-separated list of install ids — must match the section names below.
+; Add or remove as needed (j5, j6, j7, ...).
+installs = j5, j6
+
+[j5]
+path = /path/to/joomla5
+url = https://j5-dev.local
+version = 5.4.2
+db_host = localhost
+db_user =
+db_pass =
+db_name =
+admin_user = admin
+admin_pass = admin
+admin_email = admin@example.com
+
+[j6]
+path = /path/to/joomla6
+url = https://j6-dev.local
+version = 6.0.0
+db_host = localhost
+db_user =
+db_pass =
+db_name =
+admin_user = admin
+admin_pass = admin
+admin_email = admin@example.com
diff --git a/composer.json b/composer.json
index 5f5ace9..0ca40d3 100644
--- a/composer.json
+++ b/composer.json
@@ -43,7 +43,7 @@
     "ext-mbstring": "*"
   },
   "require-dev": {
-    "cwm/build-tools": "^0.3.2@alpha",
+    "cwm/build-tools": "^0.4@alpha",
     "friendsofphp/php-cs-fixer": "^3.0",
     "phpunit/phpunit": "^11.0"
   },
@@ -61,7 +61,15 @@
     "ars-list":              "cwm-ars-list",
     "changelog":             "cwm-changelog",
     "sync-languages":        "cwm-sync-languages",
-    "sync-configs":          "cwm-sync-configs"
+    "sync-configs":          "cwm-sync-configs",
+
+    "setup":                 "cwm-setup",
+    "link":                  "cwm-link",
+    "link-check":            "cwm-link-check",
+    "clean":                 "cwm-clean",
+    "verify":                "cwm-verify",
+    "joomla-install":        "cwm-joomla-install",
+    "joomla-latest":         "cwm-joomla-latest"
   },
   "autoload-dev": {
     "psr-4": {