refactor(hooks): split session-notification.ts to comply with 200 LOC module rule

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/session-notification-event-properties.ts

@@ -0,0 +1,51 @@
+type EventProperties = Record<string, unknown> | undefined
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null
+}
+
+function getEventInfo(properties: EventProperties): Record<string, unknown> | undefined {
+  const info = properties?.info
+  return isRecord(info) ? info : undefined
+}
+
+export function getSessionID(properties: EventProperties): string | undefined {
+  const sessionID = properties?.sessionID
+  if (typeof sessionID === "string" && sessionID.length > 0) return sessionID
+
+  const sessionId = properties?.sessionId
+  if (typeof sessionId === "string" && sessionId.length > 0) return sessionId
+
+  const info = getEventInfo(properties)
+  const infoSessionID = info?.sessionID
+  if (typeof infoSessionID === "string" && infoSessionID.length > 0) return infoSessionID
+
+  const infoSessionId = info?.sessionId
+  if (typeof infoSessionId === "string" && infoSessionId.length > 0) return infoSessionId
+
+  return undefined
+}
+
+export function getEventToolName(properties: EventProperties): string | undefined {
+  const tool = properties?.tool
+  if (typeof tool === "string" && tool.length > 0) return tool
+
+  const name = properties?.name
+  if (typeof name === "string" && name.length > 0) return name
+
+  return undefined
+}
+
+export function getQuestionText(properties: EventProperties): string {
+  const args = properties?.args
+  if (!isRecord(args)) return ""
+
+  const questions = args.questions
+  if (!Array.isArray(questions) || questions.length === 0) return ""
+
+  const firstQuestion = questions[0]
+  if (!isRecord(firstQuestion)) return ""
+
+  const questionText = firstQuestion.question
+  return typeof questionText === "string" ? questionText : ""
+}