feat(inventory): Bestandsposition anlegen (#4)

Stock-Aggregate mit MinimumLevel, MinimumShelfLife und StockDraft.
Quantity/UnitOfMeasure nach shared.common verschoben für BC-übergreifende
Nutzung. REST-Endpoint POST /api/inventory/stocks mit Duplikat-Prüfung,
Validierung und Liquibase-Migration.

backend/src/main/resources/application-prod.yml

@@ -6,10 +6,8 @@ springdoc:
 
 logging:
   level:
-    root: WARN
+    root: INFO
     de.effigenix: INFO
-    org.springframework.security: WARN
-    org.hibernate.SQL: WARN
 
 server:
   error:

backend/src/main/resources/application.yml

@@ -44,8 +44,6 @@ logging:
   level:
     root: INFO
     de.effigenix: DEBUG
-    org.springframework.security: DEBUG
-    org.hibernate.SQL: DEBUG
 
 # CORS Configuration
 effigenix:

backend/src/main/resources/db/changelog/changes/013-create-stock-schema.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<databaseChangeLog
+        xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
+        http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-latest.xsd">
+
+    <changeSet id="012-create-stocks-table" author="effigenix">
+        <createTable tableName="stocks">
+            <column name="id" type="VARCHAR(36)">
+                <constraints primaryKey="true" nullable="false"/>
+            </column>
+            <column name="article_id" type="VARCHAR(36)">
+                <constraints nullable="false"
+                             foreignKeyName="fk_stocks_article"
+                             references="articles(id)"/>
+            </column>
+            <column name="storage_location_id" type="VARCHAR(36)">
+                <constraints nullable="false"
+                             foreignKeyName="fk_stocks_storage_location"
+                             references="storage_locations(id)"/>
+            </column>
+            <column name="minimum_level_amount" type="DECIMAL(12,3)"/>
+            <column name="minimum_level_unit" type="VARCHAR(20)"/>
+            <column name="minimum_shelf_life_days" type="INTEGER"/>
+        </createTable>
+        <addUniqueConstraint tableName="stocks"
+                             columnNames="article_id, storage_location_id"
+                             constraintName="uq_stocks_article_location"/>
+        <createIndex tableName="stocks" indexName="idx_stocks_article_id">
+            <column name="article_id"/>
+        </createIndex>
+        <createIndex tableName="stocks" indexName="idx_stocks_storage_location_id">
+            <column name="storage_location_id"/>
+        </createIndex>
+    </changeSet>
+
+</databaseChangeLog>

backend/src/main/resources/db/changelog/db.changelog-master.xml

@@ -17,5 +17,6 @@
     <include file="db/changelog/changes/010-create-recipe-schema.xml"/>
     <include file="db/changelog/changes/011-create-recipe-ingredients-table.xml"/>
     <include file="db/changelog/changes/012-create-recipe-production-steps-table.xml"/>
+    <include file="db/changelog/changes/013-create-stock-schema.xml"/>
 
 </databaseChangeLog>