build: make git-sync toggle + diag env-path aware

Grav Admin saves plugin config into the active environment's config tree
(user/env/<host>/config/plugins/) when an env override dir exists — so
git-sync.yaml landed there, not in user/config/plugins/. Update the
toggle script to take a WEBROOT and search both locations (env path
first), and update remote-git-sync-disable/enable to pass WEBROOT.
remote-diag now surfaces git-sync config (secrets redacted) from either
location.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Np4cMQLF77i664CAQXySzU

scripts/git-sync-toggle.sh

@@ -1,13 +1,22 @@
 #!/bin/bash
 set -e
 
-FILE="$1"
+# Enable/disable the git-sync plugin by flipping `enabled:` in its config.
+#
+# git-sync.yaml may live in the per-environment config tree
+# (user/env/<host>/config/plugins/) when an env override dir exists — Grav's
+# Admin saves config there when an environment is active — otherwise in the
+# standard user/config/plugins/. Search both, env path first.
+WEBROOT="$1"
 STATE="$2"
-: "${FILE:?usage: git-sync-toggle.sh <git-sync.yaml path> <true|false>}"
-: "${STATE:?usage: git-sync-toggle.sh <git-sync.yaml path> <true|false>}"
+: "${WEBROOT:?usage: git-sync-toggle.sh <webroot> <true|false>}"
+: "${STATE:?usage: git-sync-toggle.sh <webroot> <true|false>}"
 
-if [ ! -f "$FILE" ]; then
-    echo "ERROR: $FILE not found — is git-sync installed on this server?" >&2
+FILE=$(ls "$WEBROOT"/user/env/*/config/plugins/git-sync.yaml \
+          "$WEBROOT"/user/config/plugins/git-sync.yaml 2>/dev/null | head -1)
+
+if [ -z "$FILE" ] || [ ! -f "$FILE" ]; then
+    echo "ERROR: git-sync.yaml not found under $WEBROOT — is git-sync installed/configured?" >&2
     exit 1
 fi
 
@@ -17,4 +26,4 @@ else
     printf 'enabled: %s\n' "$STATE" | cat - "$FILE" > "$FILE.tmp" && mv "$FILE.tmp" "$FILE"
 fi
 
-echo "git-sync now: $(grep -E '^enabled:' "$FILE")"
+echo "git-sync now: $(grep -E '^enabled:' "$FILE")  ($FILE)"