Fix function list parsing to skip header rows

Use grep to only match lines starting with lowercase (function names),
and add validation to skip empty or invalid names.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.github/workflows/deploy-supabase.yml

@@ -81,14 +81,18 @@ jobs:
 
       - name: Remove Deleted Functions
         run: |
-          # Get list of functions deployed on Supabase
-          deployed=$(supabase functions list --project-ref $SUPABASE_PROJECT_REF | tail -n +2 | awk '{print $1}')
+          # Get list of functions deployed on Supabase (skip header lines, extract slug column)
+          deployed=$(supabase functions list --project-ref $SUPABASE_PROJECT_REF | grep -E '^[a-z]' | awk '{print $1}')
 
           # Get list of functions in the repo (excluding _shared)
           local_functions=$(ls -d apps/supabase/functions/*/ 2>/dev/null | xargs -I {} basename {} | grep -v '^_shared$' || true)
 
           # Delete any deployed functions that no longer exist in the repo
           for func in $deployed; do
+            # Skip empty or invalid function names
+            [ -z "$func" ] && continue
+            [[ "$func" =~ ^[^a-z] ]] && continue
+
             if ! echo "$local_functions" | grep -q "^${func}$"; then
               echo "Deleting removed function: $func"
               supabase functions delete "$func" --project-ref $SUPABASE_PROJECT_REF