fix migration scripts for non-interactive SSH and bash 5.3

01-fetch-events.sh: nak buffers output when stdout is not a TTY, causing
it to hang silently in non-interactive SSH sessions. Wrap with 'script'
to provide a pseudo-TTY, then strip the injected carriage returns and
connection banner line from the output.

40-classify-actions.sh: bash 5.3 treats ${#assoc[@]} and array iteration
as unbound variable errors under set -u when arrays are empty. Replace
${#assoc[@]} with explicit counters and guard array iterations with
set +u/set -u.

1 files changed, 8 insertions, 1 deletions

diff --git a/docs/archive/2026-01-relay-ngit-dev-migration/scripts/01-fetch-events.sh b/docs/archive/2026-01-relay-ngit-dev-migration/scripts/01-fetch-events.sh
index e0d6f26..7079bb9 100755
--- a/docs/archive/2026-01-relay-ngit-dev-migration/scripts/01-fetch-events.sh
+++ b/docs/archive/2026-01-relay-ngit-dev-migration/scripts/01-fetch-events.sh
@@ -124,7 +124,14 @@ fetch_kind() {
     
     # Use --paginate to ensure we get all events, not just first page
     # nak outputs one event per line (JSONL format)
-    if ! nak req -k "$kind" --paginate "$relay" > "$output_file" 2>/dev/null; then
+    # NOTE: nak buffers output when stdout is not a TTY (e.g. non-interactive SSH).
+    # Use 'script' to provide a pseudo-TTY so nak flushes each line immediately.
+    # Then strip the nak connection banner ("connecting to ...") and carriage returns
+    # that 'script' injects into the output stream.
+    if ! script -q -c "nak req -k $kind --paginate $relay" /dev/null 2>/dev/null \
+        | tr -d '\r' \
+        | grep -v '^connecting to ' \
+        > "$output_file"; then
         log_error "Failed to fetch $description from $relay"
         return 1
     fi