CHANGE: added db initialization script

DB/initdb/01_create_tables.sql

@@ -0,0 +1,35 @@
+-- ----------------------------
+-- Table structure for anwesenheit
+-- ----------------------------
+DROP TABLE IF EXISTS "anwesenheit";
+CREATE TABLE "anwesenheit" (
+    "counter_id" bigserial PRIMARY KEY,
+    "timestamp" timestamp(6),
+    "card_uid" varchar(255),
+    "check_in_out" int2,
+    "geraet_id" int2
+);
+COMMENT ON COLUMN "anwesenheit"."check_in_out" IS '1=Check In 2=Check Out , 3=Check in Manuell, 4=Check out manuell255=Automatic Check Out';
+COMMENT ON COLUMN "anwesenheit"."geraet_id" IS 'ID des Lesegerätes';
+
+-- ----------------------------
+-- Table structure for personal_daten
+-- ----------------------------
+DROP TABLE IF EXISTS "personal_daten";
+CREATE TABLE "personal_daten" (
+    "personal_nummer" int4 NOT NULL PRIMARY KEY,
+    "aktiv_beschaeftigt" bool,
+    "vorname" varchar(255),
+    "nachname" varchar(255),
+    "geburtsdatum" date,
+    "plz" varchar(255),
+    "adresse" varchar(255),
+    "geschlecht" int2,
+    "card_uid" varchar(255),
+    "hauptbeschaeftigungs_ort" int2,
+    "arbeitszeit_per_tag" float4,
+    "arbeitszeit_min_start" time(6),
+    "arbeitszeit_max_ende" time(6),
+    "vorgesetzter_pers_nr" int4
+);
+COMMENT ON COLUMN "personal_daten"."geschlecht" IS '1==weiblich, 2==maennlich, 3==divers';

DB/initdb/02_create_user.sh

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+#!/bin/bash
+set -e  # Exit on error
+
+echo "Creating PostgreSQL user and setting permissions..."
+
+psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
+    CREATE USER $POSTGRES_API_USER WITH ENCRYPTED PASSWORD '$POSTGRES_API_PASSWORD';
+    GRANT CONNECT ON DATABASE $POSTGRES_DB TO $POSTGRES_API_USER;
+    GRANT USAGE ON SCHEMA public TO $POSTGRES_API_USER;
+    GRANT SELECT, INSERT, UPDATE ON ALL TABLES IN SCHEMA public TO $POSTGRES_API_USER;
+EOSQL
+
+echo "User creation and permissions setup complete!"