Initialize MediaManager-Core project with essential setup:

- Added `.gitignore` for common IDE and build artifacts.
- Configured `pom.xml` with dependencies: PostgreSQL, Hibernate, HikariCP, Log4j 2, Jackson, JUnit 5.
- Created `Media` entity with JPA annotations.
- Added `application.properties` for database and IPC configuration.
- Configured Log4j 2 with console and rolling file appenders.
- Provided `README.md` with setup instructions.
- Included `MediaManagerApplication` class as a starting point.

src/main/java/com/mediamanager/MediaManagerApplication.java

@@ -0,0 +1,55 @@
+package com.mediamanager;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Properties;
+
+public class MediaManagerApplication {
+    private static final Logger logger = LogManager.getLogger(MediaManagerApplication.class);
+    private static Properties config;
+
+    public static void main(String[] args) {
+        logger.info("Starting MediaManager Core Application...");
+
+        try {
+            // Load configuration
+            loadConfiguration();
+
+            // TODO: Initialize database connection
+            // TODO: Initialize IPC server with named pipes
+            // TODO: Start application services
+
+            logger.info("MediaManager Core started successfully");
+            logger.info("IPC Pipe: {}", config.getProperty("ipc.pipe.path") + "/" + config.getProperty("ipc.pipe.name"));
+
+            // Keep application running
+            Runtime.getRuntime().addShutdownHook(new Thread(() -> {
+                logger.info("Shutting down MediaManager Core...");
+                // TODO: Cleanup resources
+            }));
+
+        } catch (Exception e) {
+            logger.error("Failed to start MediaManager Core", e);
+            System.exit(1);
+        }
+    }
+
+    private static void loadConfiguration() throws IOException {
+        config = new Properties();
+        try (InputStream input = MediaManagerApplication.class.getClassLoader()
+                .getResourceAsStream("application.properties")) {
+            if (input == null) {
+                throw new IOException("Unable to find application.properties");
+            }
+            config.load(input);
+            logger.info("Configuration loaded successfully");
+        }
+    }
+
+    public static Properties getConfig() {
+        return config;
+    }
+}

src/main/java/com/mediamanager/model/Media.java

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+package com.mediamanager.model;
+
+import jakarta.persistence.*;
+import java.time.LocalDateTime;
+
+@Entity
+@Table(name = "media")
+public class Media {
+    
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    
+    @Column(nullable = false)
+    private String title;
+    
+    @Column(nullable = false, unique = true)
+    private String filePath;
+    
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false)
+    private MediaType type;
+    
+    @Column
+    private Long fileSize;
+    
+    @Column
+    private String mimeType;
+    
+    @Column(name = "created_at", nullable = false, updatable = false)
+    private LocalDateTime createdAt;
+    
+    @Column(name = "updated_at")
+    private LocalDateTime updatedAt;
+    
+    @PrePersist
+    protected void onCreate() {
+        createdAt = LocalDateTime.now();
+        updatedAt = LocalDateTime.now();
+    }
+    
+    @PreUpdate
+    protected void onUpdate() {
+        updatedAt = LocalDateTime.now();
+    }
+    
+    // Constructors
+    public Media() {}
+    
+    public Media(String title, String filePath, MediaType type) {
+        this.title = title;
+        this.filePath = filePath;
+        this.type = type;
+    }
+    
+    // Getters and Setters
+    public Long getId() {
+        return id;
+    }
+    
+    public void setId(Long id) {
+        this.id = id;
+    }
+    
+    public String getTitle() {
+        return title;
+    }
+    
+    public void setTitle(String title) {
+        this.title = title;
+    }
+    
+    public String getFilePath() {
+        return filePath;
+    }
+    
+    public void setFilePath(String filePath) {
+        this.filePath = filePath;
+    }
+    
+    public MediaType getType() {
+        return type;
+    }
+    
+    public void setType(MediaType type) {
+        this.type = type;
+    }
+    
+    public Long getFileSize() {
+        return fileSize;
+    }
+    
+    public void setFileSize(Long fileSize) {
+        this.fileSize = fileSize;
+    }
+    
+    public String getMimeType() {
+        return mimeType;
+    }
+    
+    public void setMimeType(String mimeType) {
+        this.mimeType = mimeType;
+    }
+    
+    public LocalDateTime getCreatedAt() {
+        return createdAt;
+    }
+    
+    public void setCreatedAt(LocalDateTime createdAt) {
+        this.createdAt = createdAt;
+    }
+    
+    public LocalDateTime getUpdatedAt() {
+        return updatedAt;
+    }
+    
+    public void setUpdatedAt(LocalDateTime updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+    
+    public enum MediaType {
+        VIDEO,
+        AUDIO,
+        IMAGE,
+        DOCUMENT,
+        OTHER
+    }
+}

src/main/resources/META-INF/persistence.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<persistence xmlns="https://jakarta.ee/xml/ns/persistence"
+             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:schemaLocation="https://jakarta.ee/xml/ns/persistence
+             https://jakarta.ee/xml/ns/persistence/persistence_3_0.xsd"
+             version="3.0">
+
+    <persistence-unit name="MediaManagerPU" transaction-type="RESOURCE_LOCAL">
+        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
+
+        <!-- Add entity classes here as they are created -->
+        <!-- <class>com.mediamanager.model.Media</class> -->
+
+        <properties>
+            <!-- Database connection properties will be set programmatically -->
+            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
+            <property name="hibernate.hbm2ddl.auto" value="update"/>
+            <property name="hibernate.show_sql" value="false"/>
+            <property name="hibernate.format_sql" value="true"/>
+            
+            <!-- Connection pool settings -->
+            <property name="hibernate.hikari.maximumPoolSize" value="10"/>
+            <property name="hibernate.hikari.minimumIdle" value="2"/>
+            <property name="hibernate.hikari.connectionTimeout" value="30000"/>
+        </properties>
+    </persistence-unit>
+
+</persistence>

src/main/resources/application.properties

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+# Database Configuration
+db.url=jdbc:postgresql://localhost:5432/mediamanager
+db.username=mediamanager
+db.password=changeme
+db.driver=org.postgresql.Driver
+
+# HikariCP Connection Pool Settings
+db.pool.maximum-pool-size=10
+db.pool.minimum-idle=2
+db.pool.connection-timeout=30000
+db.pool.idle-timeout=600000
+db.pool.max-lifetime=1800000
+
+# Hibernate Settings
+hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
+hibernate.hbm2ddl.auto=update
+hibernate.show_sql=false
+hibernate.format_sql=true
+
+# IPC Configuration
+ipc.pipe.name=mediamanager-pipe
+ipc.pipe.path=/tmp/mediamanager
+ipc.buffer.size=8192

src/main/resources/log4j2.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<Configuration status="WARN">
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%t] %-5level %logger{36} - %msg%n"/>
+        </Console>
+        
+        <RollingFile name="FileAppender" fileName="logs/mediamanager.log"
+                     filePattern="logs/mediamanager-%d{yyyy-MM-dd}-%i.log">
+            <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%t] %-5level %logger{36} - %msg%n"/>
+            <Policies>
+                <TimeBasedTriggeringPolicy interval="1"/>
+                <SizeBasedTriggeringPolicy size="10MB"/>
+            </Policies>
+            <DefaultRolloverStrategy max="10"/>
+        </RollingFile>
+    </Appenders>
+    
+    <Loggers>
+        <Logger name="com.mediamanager" level="debug" additivity="false">
+            <AppenderRef ref="Console"/>
+            <AppenderRef ref="FileAppender"/>
+        </Logger>
+        
+        <Logger name="org.hibernate" level="info" additivity="false">
+            <AppenderRef ref="Console"/>
+            <AppenderRef ref="FileAppender"/>
+        </Logger>
+        
+        <Root level="info">
+            <AppenderRef ref="Console"/>
+            <AppenderRef ref="FileAppender"/>
+        </Root>
+    </Loggers>
+</Configuration>