Gap 2 (#25): VirtualTagsTab.razor + /virtual-tags global page — list/create/toggle
virtual tags per draft generation with DataType, Script, trigger, Historize, Enabled
fields. Tab wired into DraftEditor.
Gap 3 (#26): ScriptedAlarmsTab.razor + /scripted-alarms global page — list/create
scripted alarms with AlarmType, Severity, MessageTemplate, PredicateScript,
HistorizeToAveva, Retain. SeverityBand helper shows Low/Medium/High/Critical label.
Tab wired into DraftEditor.
Gap 4 (#27): ScriptLogHub (SignalR IAsyncEnumerable stream) tails scripts-*.log with
optional ScriptName filter; ScriptLog.razor provides Start/Stop/Clear controls plus
level filter dropdown. Hub registered at /hubs/script-log in Program.cs.
Nav rail gains a "Scripting" eyebrow with entries for all three pages.
19 new unit tests for ScriptLogHub parse/filter/tail helpers (Category=Unit).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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