fix(spoof): emit validation_rejected status

The source plan's bulletin-history schema declared a four-value
status enum: success, network_error, parse_error,
validation_rejected. The poller only ever wrote the first three;
when PatchLevelManager.updateTo silently rejected a date for bad
format, floor violation, past/future bounds, or atomicWrite IO
error, the history still recorded status=success and applied=true
because applied was set from isNewer before updateTo ran.

Make updateTo return Boolean. Wire the result through fetchAndParse
so a rejected apply lands as status=validation_rejected with
applied=false and an error string identifying the date that failed.
Closes the only spec gap from fancy-humming-firefly.md uncovered
during the source-plan cross-audit.

app/src/main/java/org/matrix/TEESimulator/config/BulletinPoller.kt

@@ -102,14 +102,21 @@ object BulletinPoller {
                 )
             }
             val current = currentPatch()
-            if (current == null) {
+            if (current == null || date <= current) {
                 return FetchResult(ts, "success", code, date, false, null)
             }
-            val isNewer = date > current
-            if (isNewer) {
-                PatchLevelManager.updateTo(date)
+            if (PatchLevelManager.updateTo(date)) {
+                FetchResult(ts, "success", code, date, true, null)
+            } else {
+                FetchResult(
+                    ts,
+                    "validation_rejected",
+                    code,
+                    date,
+                    false,
+                    "PatchLevelManager.updateTo rejected $date",
+                )
             }
-            FetchResult(ts, "success", code, date, isNewer, null)
         } catch (e: Exception) {
             FetchResult(ts, "network_error", null, null, false, e.toString())
         } finally {

app/src/main/java/org/matrix/TEESimulator/config/PatchLevelManager.kt

@@ -79,15 +79,15 @@ object PatchLevelManager {
         AndroidDeviceUtils.setProperty("ro.vendor.build.security_patch", date)
     }
 
-    fun updateTo(date: String) {
+    fun updateTo(date: String): Boolean {
         if (!DATE_PATTERN.matches(date)) {
             SystemLogger.warning("PatchLevelManager: invalid date format: $date")
-            return
+            return false
         }
         val dateInt = date.replace("-", "").toInt()
         if (dateInt < FLOOR_YYYYMMDD) {
             SystemLogger.warning("PatchLevelManager: $date below floor $FLOOR_YYYYMMDD")
-            return
+            return false
         }
         val now = LocalDate.now()
         val today = now.year * 10000 + now.monthValue * 100 + now.dayOfMonth
@@ -95,7 +95,7 @@ object PatchLevelManager {
             SystemLogger.warning(
                 "PatchLevelManager: $date more than 1y older than today ($today)"
             )
-            return
+            return false
         }
         val maxFuture =
             now.plusDays(MAX_FUTURE_DAYS).let {
@@ -105,16 +105,17 @@ object PatchLevelManager {
             SystemLogger.warning(
                 "PatchLevelManager: $date more than $MAX_FUTURE_DAYS days in future ($maxFuture)"
             )
-            return
+            return false
         }
         try {
             atomicWrite(date)
         } catch (e: Exception) {
             SystemLogger.error("PatchLevelManager: atomicWrite failed for $date", e)
-            return
+            return false
         }
         applyToProps(date)
         SystemLogger.info("PatchLevelManager: applied patch date $date")
+        return true
     }
 
     private fun resolvePifPatch(): String? {