Enhance Docker and PowerShell scripts for improved functionality and maintainability

- Updated Dockerfile to include default MySQL client for better database interaction.
- Modified entrypoint.sh to support additional workspace for legacy applications and added MySQL readiness check before startup.
- Enhanced PowerShell script for trimming MySQL dumps to include overlay dumps and improved error handling for missing race and user IDs.
- Added new image files and face encoding pickles for various projects, ensuring comprehensive data availability.
- Removed outdated face encoding pickle from PISA directory to maintain data relevance.

Co-authored-by: Copilot <copilot@github.com>

local-jsp-docker/mysql/init/10-import-pg.sh

@@ -1,7 +1,8 @@
 #!/bin/sh
 set -eu
 
-seed_dump="${LOCAL_DB_SEED_DUMP:-pg-model-seed-trimmed-20260421.sql}"
+seed_dump="${LOCAL_DB_SEED_DUMP:-pg-local-purpose-seed-20260422.sql}"
+overlay_dump="${LOCAL_DB_OVERLAY_DUMP:-}"
 
 if [ ! -f "/seed/${seed_dump}" ]; then
 	echo "Seed dump not found: /seed/${seed_dump}" >&2
@@ -9,4 +10,12 @@ if [ ! -f "/seed/${seed_dump}" ]; then
 fi
 
 echo "Importing seed dump: ${seed_dump}"
-mysql -uroot -p"${MYSQL_ROOT_PASSWORD}" "${MYSQL_DATABASE}" < "/seed/${seed_dump}"
+mysql -uroot -p"${MYSQL_ROOT_PASSWORD}" "${MYSQL_DATABASE}" < "/seed/${seed_dump}"
+
+if [ -n "${overlay_dump}" ] && [ -f "/seed/${overlay_dump}" ]; then
+	echo "Importing seed overlay: ${overlay_dump}"
+	mysql -uroot -p"${MYSQL_ROOT_PASSWORD}" "${MYSQL_DATABASE}" < "/seed/${overlay_dump}"
+elif [ -n "${overlay_dump}" ]; then
+	echo "Seed overlay not found: /seed/${overlay_dump}" >&2
+	exit 1
+fi