[Bug] hs_persist_state silently ignores associative arrays

[lepeuvedic]

Summary

Associative arrays are silently ignored by hs_persist_state.

Current behavior

• local -A amap=([key]=value) persisted via hs_persist_state amap emits no state.
• Callers receive no warning or error.

Expected behavior

• Either persist associative arrays or explicitly error out when they are passed.

Severity

Medium.

Notes

• Associative arrays can be represented as two indexed arrays (keys/values).
• Indexed arrays can be represented as associative arrays as well, but both are variable-length structures.