Say "the FTP login was rejected" when that is what happened

The guard that verifies the deploy target reported every curl failure as
"could not list the FTP login directory, so the target is unverified".
That reads like a network problem or a wrong path, so two runs went
looking at the wrong thing -- the actual cause both times was curl exit
67, which means the server rejected the username and password.

Now exit 67 gets its own message naming the cause and the three places
to fix it. Everything else keeps the old wording, which is right for it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0128YzbhrfGdegUSc9RrARRf

Author: claude

.github/workflows/deploy-hostinger.yml

@@ -103,7 +103,27 @@ jobs:
           set -e
 
           if [ "$rc" -ne 0 ]; then
-            echo "::error::Could not list the FTP login directory, so the target is unverified."
+            # curl exit 67 is specifically "the server rejected the login", and
+            # saying so is worth the six lines: the generic message sent two
+            # runs chasing the wrong thing, because "could not list the
+            # directory" reads like a network or path problem when it is
+            # actually a username and password the host no longer accepts.
+            if [ "$rc" -eq 67 ]; then
+              echo "::error::The FTP server rejected the username and password."
+              echo ""
+              echo "The three secrets are set, they are just no longer valid --"
+              echo "an account renamed, deleted, or its password changed."
+              echo ""
+              echo "  1. hPanel -> Files -> FTP Accounts: note the hostname and"
+              echo "     username, and set a new password if you do not have it."
+              echo "  2. Check the account's directory is the website root, the"
+              echo "     folder holding index.html. This deploy writes to"
+              echo "     wherever the account lands when it logs in."
+              echo "  3. Update FTP_SERVER, FTP_USERNAME and FTP_PASSWORD under"
+              echo "     Settings -> Secrets and variables -> Actions."
+            else
+              echo "::error::Could not list the FTP login directory, so the target is unverified."
+            fi
             sed 's/^/  /' "$cfg.err" | head -5
             exit 1
           fi