feat(wcs): persist and query execution recovery state

ruoyi-wcs/src/main/java/com/ruoyi/wcs/query/RecoveryCaseView.java

@@ -0,0 +1,49 @@
+package com.ruoyi.wcs.query;
+
+import java.time.Instant;
+import java.util.Objects;
+
+public final class RecoveryCaseView {
+    private final String caseId;
+    private final String deviceId;
+    private final String commandKey;
+    private final String state;
+    private final String reason;
+    private final Instant createdAt;
+    private final String resolvedBy;
+    private final Instant resolvedAt;
+
+    public RecoveryCaseView(String caseId, String deviceId, String commandKey,
+                            String state, String reason, Instant createdAt,
+                            String resolvedBy, Instant resolvedAt) {
+        this.caseId = requireText(caseId, "caseId");
+        this.deviceId = requireText(deviceId, "deviceId");
+        this.commandKey = requireText(commandKey, "commandKey");
+        this.state = requireText(state, "state");
+        this.reason = requireText(reason, "reason");
+        this.createdAt = Objects.requireNonNull(createdAt, "createdAt");
+        this.resolvedBy = optional(resolvedBy);
+        this.resolvedAt = resolvedAt;
+    }
+
+    public String getCaseId() { return caseId; }
+    public String getDeviceId() { return deviceId; }
+    public String getCommandKey() { return commandKey; }
+    public String getState() { return state; }
+    public String getReason() { return reason; }
+    public Instant getCreatedAt() { return createdAt; }
+    public String getResolvedBy() { return resolvedBy; }
+    public Instant getResolvedAt() { return resolvedAt; }
+
+    private static String optional(String value) {
+        return value == null || value.trim().isEmpty() ? null : value.trim();
+    }
+
+    private static String requireText(String value, String field) {
+        String text = optional(value);
+        if (text == null) {
+            throw new IllegalArgumentException(field + " must not be blank");
+        }
+        return text;
+    }
+}