Release v0.9.21: the watcher's reach into origin is visible

Also fixes the log-capture test added with step 19: the test JVM logs at
WARN, so the INFO line reporting the recovered fetch never reached the
appender. The helper now lowers the level explicitly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

build.gradle.kts

@@ -12,7 +12,7 @@ group = "de.hoennig"
 // bump at least the patch version for every deployment — and only then, not per commit —
 // so the UI footer (BuildProperties), --version and the release notes identify what is
 // actually running; a deployment bundles whatever was committed since the last one
-version = "0.9.20"
+version = "0.9.21"
 
 java {
     toolchain {

src/main/resources/templates/releases.html

@@ -7,6 +7,20 @@
     <div th:replace="~{fragments :: nav(${view})}"></div>
     <div class="panel release-notes">
 
+        <h2>v0.9.21 <span class="muted">— 2026-08-30</span></h2>
+        <ul>
+            <li>An origin the watcher cannot reach is now visible in the web UI: a banner above the
+                table says that the list below is not updating, since when, and why. Until now the
+                page kept showing its last known state, calm and plausible, while GitTally had not
+                been able to fetch for an hour — the failure lived in the log alone. The banner is
+                deliberately separate from the live indicator: that one says whether your browser
+                reaches the server, this one whether the server reaches origin.</li>
+            <li>A lasting fetch failure is logged when its message changes instead of on every poll
+                cycle, and the recovery is logged once. One wrong token used to write several hundred
+                identical warnings an hour. An invalid <code>atTimes</code> slot is likewise reported
+                once per slot.</li>
+        </ul>
+
         <h2>v0.9.20 <span class="muted">— 2026-08-29</span></h2>
         <ul>
             <li>A build definition is now split in two: a <code>trigger</code> block says when the

src/test/kotlin/de/hoennig/gittally/watcher/WatcherTest.kt

@@ -1,5 +1,6 @@
 package de.hoennig.gittally.watcher
 
+import ch.qos.logback.classic.Level
 import ch.qos.logback.classic.Logger
 import ch.qos.logback.classic.spi.ILoggingEvent
 import ch.qos.logback.core.read.ListAppender
@@ -773,11 +774,16 @@ class WatcherTest : FunSpec() {
     }
 }
 
-/** Collects this spec's [Watcher] log messages; the returned lambda reads them at any point. */
+/**
+ * Collects this spec's [Watcher] log messages; the returned lambda reads them at any point.
+ * The level is lowered explicitly — the test JVM logs at WARN, which would drop the very
+ * INFO line that says the fetch recovered.
+ */
 private fun captureWatcherLog(): () -> List<String> {
     val logger = LoggerFactory.getLogger(Watcher::class.java) as Logger
     val appender = ListAppender<ILoggingEvent>()
     appender.start()
+    logger.level = Level.INFO
     logger.addAppender(appender)
     return { appender.list.map { it.formattedMessage } }
 }