Add room image content_hash column if missing

src/main/kotlin/com/android/trisolarisserver/config/RoomImageSchemaFix.kt

@@ -0,0 +1,37 @@
+package com.android.trisolarisserver.config
+
+import org.slf4j.LoggerFactory
+import org.springframework.boot.ApplicationArguments
+import org.springframework.boot.ApplicationRunner
+import org.springframework.jdbc.core.JdbcTemplate
+import org.springframework.stereotype.Component
+
+@Component
+class RoomImageSchemaFix(
+    private val jdbcTemplate: JdbcTemplate
+) : ApplicationRunner {
+
+    private val logger = LoggerFactory.getLogger(RoomImageSchemaFix::class.java)
+
+    override fun run(args: ApplicationArguments) {
+        val version = jdbcTemplate.queryForObject("select version()", String::class.java) ?: return
+        if (!version.contains("PostgreSQL", ignoreCase = true)) {
+            return
+        }
+
+        val hasContentHash = jdbcTemplate.queryForObject(
+            """
+            select count(*)
+            from information_schema.columns
+            where table_name = 'room_image'
+              and column_name = 'content_hash'
+            """.trimIndent(),
+            Int::class.java
+        ) ?: 0
+
+        if (hasContentHash == 0) {
+            logger.info("Adding room_image.content_hash column")
+            jdbcTemplate.execute("alter table room_image add column content_hash text")
+        }
+    }
+}

src/main/kotlin/com/android/trisolarisserver/models/room/RoomImage.kt

@@ -33,8 +33,8 @@ class RoomImage(
     @Column(name = "size_bytes", nullable = false)
     var sizeBytes: Long,
 
-    @Column(name = "content_hash", nullable = false)
+    @Column(name = "content_hash")
-    var contentHash: String,
+    var contentHash: String? = null,
 
     @Column(name = "room_type_code")
     var roomTypeCode: String? = null,