fix: preserve KakaoTalk conversation context

- treat generic and numeric KakaoTalk titles as fallback candidates so chat names can be recovered from visible text
- strip KakaoTalk sidebar, profile, unread, and timestamp chrome while keeping participant names and message snippets
- add regression coverage for generic, numeric, and chat-detail KakaoTalk captures

Author: ComputelessComputer

Sources/OpenbirdKit/Capture/SnapshotSanitizer.swift

@@ -31,6 +31,8 @@ struct SnapshotSanitizer {
         switch bundleId {
         case "com.tinyspeck.slackmacgap":
             return normalizedSlackTitle(trimmed)
+        case "com.kakao.KakaoTalkMac":
+            return normalizedKakaoTalkTitle(trimmed)
         default:
             return trimmed
         }
@@ -98,6 +100,17 @@ struct SnapshotSanitizer {
             || normalized.contains("thread")
     }
 
+    private func normalizedKakaoTalkTitle(_ title: String) -> String {
+        let normalized = title.normalizedComparisonKey
+        if normalized.isEmpty {
+            return ""
+        }
+        if normalized.allSatisfy({ $0.isNumber || $0 == " " }) {
+            return ""
+        }
+        return title
+    }
+
     private func isGenericTitle(_ title: String, appName: String) -> Bool {
         title.isEmpty || title.normalizedComparisonKey == appName.normalizedComparisonKey
     }
@@ -142,12 +155,40 @@ struct SnapshotSanitizer {
             }
         }
 
+        if bundleId == "com.kakao.KakaoTalkMac" {
+            if kakaoTalkChromeLines.contains(normalized) {
+                return true
+            }
+            if normalized.contains("new message") || normalized.contains("new messages") {
+                return true
+            }
+            if normalized.contains("chatrooms") {
+                return true
+            }
+            if normalized.allSatisfy({ $0.isNumber || $0 == " " }) {
+                return true
+            }
+            if isTimeLikeLine(normalized) {
+                return true
+            }
+        }
+
         if bundleId == "com.tinyspeck.slackmacgap" && normalized == "slack" {
             return true
         }
 
         return false
     }
+
+    private func isTimeLikeLine(_ normalized: String) -> Bool {
+        let words = normalized.split(separator: " ")
+        guard words.isEmpty == false else { return true }
+
+        let dateTokens = Set(["am", "pm", "jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "sept", "oct", "nov", "dec"])
+        return words.allSatisfy { word in
+            word.allSatisfy(\.isNumber) || dateTokens.contains(String(word))
+        }
+    }
 }
 
 private extension Array where Element == String {
@@ -176,3 +217,23 @@ private let messageChromeLines: Set<String> = [
     "search",
     "start facetime",
 ]
+
+private let kakaoTalkChromeLines: Set<String> = [
+    "add chatroom",
+    "all folder",
+    "button",
+    "chatlist icon notioff",
+    "chatroom folder",
+    "chats",
+    "common icon newdot",
+    "common icon triangledown",
+    "emoticon",
+    "enter a message",
+    "kakaotalk",
+    "notifications",
+    "profile",
+    "search",
+    "settings",
+    "silent chatroom",
+    "unread folder",
+]

Tests/OpenbirdKitTests/SnapshotSanitizerTests.swift

@@ -102,6 +102,83 @@ struct SnapshotSanitizerTests {
         #expect(sanitized.visibleText == "Can you review this before 5?\nYep, I'll take a look.")
     }
 
+    @Test func filtersKakaoTalkChromeAndKeepsMessageText() {
+        let sanitizer = SnapshotSanitizer()
+        let snapshot = WindowSnapshot(
+            bundleId: "com.kakao.KakaoTalkMac",
+            appName: "KakaoTalk",
+            windowTitle: "Yoo✨",
+            url: nil,
+            visibleText: """
+            Yoo✨
+            Profile
+            6:29 PM
+            오 저도 사나 좋아하는데...
+            Enter a message
+            """,
+            source: "accessibility"
+        )
+
+        let sanitized = sanitizer.sanitize(snapshot)
+
+        #expect(sanitized.windowTitle == "Yoo✨")
+        #expect(sanitized.visibleText == "오 저도 사나 좋아하는데...")
+    }
+
+    @Test func fallsBackToKakaoTalkConversationWhenTitleIsGeneric() {
+        let sanitizer = SnapshotSanitizer()
+        let snapshot = WindowSnapshot(
+            bundleId: "com.kakao.KakaoTalkMac",
+            appName: "KakaoTalk",
+            windowTitle: "KakaoTalk",
+            url: nil,
+            visibleText: """
+            KakaoTalk
+            common icon newdot
+            Notifications
+            Settings
+            Chats
+            Add chatroom
+            Search
+            Profile
+            8:59 PM
+            박륜지
+            내가 강한 사람이라서 스스로 처리한거지^
+            """,
+            source: "accessibility"
+        )
+
+        let sanitized = sanitizer.sanitize(snapshot)
+
+        #expect(sanitized.windowTitle == "박륜지")
+        #expect(sanitized.visibleText == "내가 강한 사람이라서 스스로 처리한거지^")
+    }
+
+    @Test func fallsBackToKakaoTalkConversationWhenTitleIsNumeric() {
+        let sanitizer = SnapshotSanitizer()
+        let snapshot = WindowSnapshot(
+            bundleId: "com.kakao.KakaoTalkMac",
+            appName: "KakaoTalk",
+            windowTitle: "1",
+            url: nil,
+            visibleText: """
+            Chats
+            Silent Chatroom
+            박륜지
+            Unread folder, 1 New message
+            8:30 PM
+            ㅋㅋㅋㅋ 먼지가 없긴 해요
+            Enter a message
+            """,
+            source: "accessibility"
+        )
+
+        let sanitized = sanitizer.sanitize(snapshot)
+
+        #expect(sanitized.windowTitle == "박륜지")
+        #expect(sanitized.visibleText == "ㅋㅋㅋㅋ 먼지가 없긴 해요")
+    }
+
     @Test func fallsBackToMeaningfulVisibleTextWhenWindowTitleIsMissing() {
         let sanitizer = SnapshotSanitizer()
         let snapshot = WindowSnapshot(