diff --git a/src/main/kotlin/com/back/koreaTravelGuide/common/config/DevConfig.kt b/src/main/kotlin/com/back/koreaTravelGuide/common/config/DevConfig.kt
index 33d8b3a..b962c68 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/common/config/DevConfig.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/common/config/DevConfig.kt
@@ -44,7 +44,7 @@ class DevConfig {
             println("   📊 Actuator Info: $baseUrl/actuator/info")
 
             println("\n🔧 데이터베이스 접속 정보 (H2 Console용):")
-            println("   JDBC URL: jdbc:h2:mem:korea_travel_guide")
+            println("   JDBC URL: jdbc:h2:mem:testdb")
             println("   Username: sa")
             println("   Password: (비어있음)")
 
diff --git a/src/main/kotlin/com/back/koreaTravelGuide/common/exception/GlobalExceptionHandler.kt b/src/main/kotlin/com/back/koreaTravelGuide/common/exception/GlobalExceptionHandler.kt
index 3a5685c..40610c1 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/common/exception/GlobalExceptionHandler.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/common/exception/GlobalExceptionHandler.kt
@@ -46,6 +46,12 @@ class GlobalExceptionHandler {
         ex: Exception,
         request: HttpServletRequest,
     ): ResponseEntity<ApiResponse<Void>> {
+        // Static resource 예외는 무시 (favicon.ico, CSS, JS 등)
+        if (ex is org.springframework.web.servlet.resource.NoResourceFoundException) {
+            logger.debug("Static resource not found: {} at {}", ex.message, request.requestURI)
+            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(ApiResponse("리소스를 찾을 수 없습니다"))
+        }
+
         logger.error("서버 오류 - {}: {} at {}", ex::class.simpleName, ex.message, request.requestURI, ex)
         return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body(ApiResponse("서버 내부 오류가 발생했습니다"))
     }
diff --git a/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt b/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt
index d1c5914..cb687f6 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt
@@ -5,6 +5,7 @@ import com.back.koreaTravelGuide.security.CustomOAuth2UserService
 import com.back.koreaTravelGuide.security.JwtAuthenticationFilter
 import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
+import org.springframework.core.env.Environment
 import org.springframework.security.config.annotation.web.builders.HttpSecurity
 import org.springframework.security.config.annotation.web.invoke
 import org.springframework.security.config.http.SessionCreationPolicy
@@ -16,35 +17,59 @@ class SecurityConfig(
     private val customOAuth2UserService: CustomOAuth2UserService,
     private val customOAuth2LoginSuccessHandler: CustomOAuth2LoginSuccessHandler,
     private val jwtAuthenticationFilter: JwtAuthenticationFilter,
+    private val environment: Environment,
 ) {
     @Bean
     fun filterChain(http: HttpSecurity): SecurityFilterChain {
+        val isDev = environment.activeProfiles.contains("dev")
+
         http {
-            // 기본 보안 기능
             csrf { disable() }
             formLogin { disable() }
             httpBasic { disable() }
             logout { disable() }
 
+            headers {
+                if (isDev) {
+                    frameOptions { disable() }
+                } else {
+                    frameOptions { sameOrigin }
+                }
+            }
+
             sessionManagement {
-                sessionCreationPolicy = SessionCreationPolicy.STATELESS
+                sessionCreationPolicy =
+                    if (isDev) {
+                        SessionCreationPolicy.IF_REQUIRED
+                    } else {
+                        SessionCreationPolicy.STATELESS
+                    }
             }
 
-            oauth2Login {
-                userInfoEndpoint {
-                    userService = customOAuth2UserService
+            if (!isDev) {
+                oauth2Login {
+                    userInfoEndpoint {
+                        userService = customOAuth2UserService
+                    }
+                    authenticationSuccessHandler = customOAuth2LoginSuccessHandler
                 }
-                authenticationSuccessHandler = customOAuth2LoginSuccessHandler
             }
 
             authorizeHttpRequests {
-                authorize("/api/auth/**", permitAll)
-                authorize("/swagger-ui/**", "/v3/api-docs/**", permitAll)
                 authorize("/h2-console/**", permitAll)
+                authorize("/swagger-ui/**", "/v3/api-docs/**", permitAll)
+                authorize("/api/auth/**", permitAll)
                 authorize("/favicon.ico", permitAll)
-                authorize(anyRequest, authenticated)
+                if (isDev) {
+                    authorize(anyRequest, permitAll)
+                } else {
+                    authorize(anyRequest, authenticated)
+                }
+            }
+
+            if (!isDev) {
+                addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter::class.java)
             }
-            addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter::class.java)
         }
 
         return http.build()
diff --git a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/service/AiChatService.kt b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/service/AiChatService.kt
index 322a6a9..6209b75 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/service/AiChatService.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/service/AiChatService.kt
@@ -7,6 +7,7 @@ import com.back.koreaTravelGuide.domain.ai.aiChat.entity.AiChatSession
 import com.back.koreaTravelGuide.domain.ai.aiChat.entity.SenderType
 import com.back.koreaTravelGuide.domain.ai.aiChat.repository.AiChatMessageRepository
 import com.back.koreaTravelGuide.domain.ai.aiChat.repository.AiChatSessionRepository
+import org.slf4j.LoggerFactory
 import org.springframework.ai.chat.client.ChatClient
 import org.springframework.ai.chat.memory.ChatMemory
 import org.springframework.stereotype.Service
@@ -17,6 +18,8 @@ class AiChatService(
     private val aiChatSessionRepository: AiChatSessionRepository,
     private val chatClient: ChatClient,
 ) {
+    private val logger = LoggerFactory.getLogger(AiChatService::class.java)
+
     fun getSessions(userId: Long): List<AiChatSession> {
         return aiChatSessionRepository.findByUserIdOrderByCreatedAtDesc(userId)
     }
@@ -74,6 +77,7 @@ class AiChatService(
                     .call()
                     .content() ?: AI_ERROR_FALLBACK
             } catch (e: Exception) {
+                logger.error("AI 응답 생성 실패: {}", e.message, e)
                 AI_ERROR_FALLBACK
             }
 
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 7a44033..57aa50f 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -1,6 +1,8 @@
 spring:
   profiles:
     active: dev
+  config:
+    import: "optional:file:.env[.properties]"
 
   # Spring AI 1.0.0-M6 설정 (OpenRouter 사용)
   ai:
@@ -14,7 +16,7 @@ spring:
 
   # 개발용 H2 Database 설정 (주니어 개발자용)
   datasource:
-    url: jdbc:h2:mem:korea_travel_guide
+    url: jdbc:h2:mem:testdb
     driver-class-name: org.h2.Driver
     username: sa
     password: ""
@@ -34,6 +36,11 @@ spring:
       hibernate:
         format_sql: true # SQL 포맷팅
 
+  sql:
+    init:
+      mode: always
+      schema-locations: classpath:org/springframework/ai/chat/memory/repository/jdbc/schema-h2.sql
+
   # WebSocket 설정 (Guest-Guide 채팅용)
   websocket:
     allowed-origins: "http://localhost:3000,http://localhost:3001,http://localhost:8080"
@@ -63,6 +70,12 @@ spring:
   session:
     store-type: none  # Redis 없어도 실행 가능하도록 변경
     timeout: 30m
+
+  # Redis 자동 설정 비활성화 (세션 비활성화용)
+  autoconfigure:
+    exclude:
+      - org.springframework.boot.autoconfigure.session.SessionAutoConfiguration
+      - org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration
           
 # Swagger API 문서 설정 (주니어 개발자용)
 springdoc:
@@ -79,6 +92,12 @@ weather:
     key: ${WEATHER_API_KEY}
     base-url: http://apis.data.go.kr/1360000/MidFcstInfoService
 
+# Tour API 설정
+tour:
+  api:
+    key: ${TOUR_API_KEY:dev-tour-api-key-placeholder}
+    base-url: ${TOUR_API_BASE_URL:http://apis.data.go.kr/B551011/KorService1}
+
 
 # 로깅 설정 (주니어 개발자 디버깅용)
 logging:
@@ -111,4 +130,5 @@ management:
 
 # JWT 설정
 jwt:
-  secret-key: ${CUSTOM__JWT__SECRET_KEY}
\ No newline at end of file
+  secret-key: ${CUSTOM__JWT__SECRET_KEY:dev-secret-key-for-local-testing-please-change}
+  access-token-expiration-minutes: ${JWT_ACCESS_TOKEN_EXPIRATION_MINUTES:60}
\ No newline at end of file
diff --git a/src/main/resources/org/springframework/ai/chat/memory/repository/jdbc/schema-h2.sql b/src/main/resources/org/springframework/ai/chat/memory/repository/jdbc/schema-h2.sql
new file mode 100644
index 0000000..0bcb8d3
--- /dev/null
+++ b/src/main/resources/org/springframework/ai/chat/memory/repository/jdbc/schema-h2.sql
@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS SPRING_AI_CHAT_MEMORY (
+    id VARCHAR(255) DEFAULT RANDOM_UUID() PRIMARY KEY,
+    conversation_id VARCHAR(255) NOT NULL,
+    type VARCHAR(50) NOT NULL,
+    content CLOB NOT NULL,
+    metadata CLOB,
+    "timestamp" TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_spring_ai_chat_memory_conversation_id ON SPRING_AI_CHAT_MEMORY(conversation_id);
+CREATE INDEX IF NOT EXISTS idx_spring_ai_chat_memory_timestamp ON SPRING_AI_CHAT_MEMORY("timestamp");
\ No newline at end of file
diff --git a/src/main/resources/org/springframework/ai/chat/memory/repository/jdbc/schema-postgresql.sql b/src/main/resources/org/springframework/ai/chat/memory/repository/jdbc/schema-postgresql.sql
new file mode 100644
index 0000000..63253c9
--- /dev/null
+++ b/src/main/resources/org/springframework/ai/chat/memory/repository/jdbc/schema-postgresql.sql
@@ -0,0 +1,11 @@
+CREATE TABLE IF NOT EXISTS SPRING_AI_CHAT_MEMORY (
+    id VARCHAR(255) PRIMARY KEY,
+    conversation_id VARCHAR(255) NOT NULL,
+    message_type VARCHAR(50) NOT NULL,
+    content TEXT NOT NULL,
+    metadata TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_spring_ai_chat_memory_conversation_id ON SPRING_AI_CHAT_MEMORY(conversation_id);
+CREATE INDEX IF NOT EXISTS idx_spring_ai_chat_memory_created_at ON SPRING_AI_CHAT_MEMORY(created_at);
\ No newline at end of file