fix: include api plugin in server install alongside admin2

Both api and admin2 are bundled with the Grav 2.0 zip and not available
via GPM. Extract and install both during remote-install. Remove the
ad-hoc remote-install-admin2 target — the main install now covers it.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Vgmzx8VTTTmCskSpQtsLTr

scripts/server-install.sh

@@ -11,9 +11,6 @@ set -e
 : "${GITEA_USER:?GITEA_USER is not set}"
 : "${GITEA_TOKEN:?GITEA_TOKEN is not set}"
 
-# GRAV_CHANNEL_SUFFIX: optional, set to '?testing' for RC/beta releases (e.g. 2.0.0-rc.9)
-# Leave unset or empty for stable releases.
-
 trap 'rm -f ~/.netrc' EXIT
 
 echo "==> Setting up credentials (temporary)"
@@ -26,6 +23,7 @@ wget --no-verbose "https://github.com/getgrav/grav/releases/download/${GRAV_VERS
 unzip -oq grav-admin.zip
 cp -rf grav-admin/. .
 cp -rf grav-admin/user/plugins/admin2 /tmp/admin2-plugin
+cp -rf grav-admin/user/plugins/api /tmp/api-plugin
 rm -rf grav-admin grav-admin.zip
 
 echo "==> Cloning user repo"
@@ -43,7 +41,8 @@ fi
 echo "==> Creating required directories"
 mkdir -p user/plugins user/accounts user/data
 cp -rf /tmp/admin2-plugin user/plugins/admin2
-rm -rf /tmp/admin2-plugin
+cp -rf /tmp/api-plugin user/plugins/api
+rm -rf /tmp/admin2-plugin /tmp/api-plugin
 
 echo "==> Installing plugins"
 php bin/gpm install $PLUGINS -y