feat: eventlog writes to dedicated events journal; init/backfill/close wiring

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

hbd/server/main.py

@@ -160,11 +160,18 @@ async def _run_async(config, config_path=None):
     from . import threshold as threshold_mod
 
     notify_mod.setup(config, loop=loop)
-    
+
     # Initialize message journal
     msg_journal = journal_mod.get_journal(config)
     await msg_journal.initialize()
-    
+
+    # Initialize events journal (human-readable event log for the /log page)
+    events_journal = journal_mod.get_events_journal(config)
+    await events_journal.initialize()
+    if data.msgs:
+        # One-time seed on upgrade: only writes when the journal file is empty
+        await events_journal.backfill(data.msgs)
+
     # Initialize threshold checker
     threshold_checker = threshold_mod.ThresholdChecker(
         config=config,
@@ -379,6 +386,12 @@ async def _run_async(config, config_path=None):
         except Exception as e:
             logger.warning("Error closing message journal: %s", e)
 
+        # Close events journal
+        try:
+            await events_journal.close()
+        except Exception as e:
+            logger.warning("Error closing events journal: %s", e)
+
         # Signal DNS worker to exit and await it
         try:
             if "dns_task" in locals() and dns_task: