formatSingleDiscovery (the local/full path, FormatForAIContext) reported a
resource's service, access, paths, and ports but not how old the discovery was —
so Ollama/local users lacked the recency signal cloud users just got. Emit a
"Last Discovered: <age>" header fact when the timestamp is known, completing
freshness parity across the cloud-safe and full paths. Omitted when unknown.
Test: TestFormatSingleDiscovery_IncludesFreshness (present when set, absent when
zero).
rcourtman
e2f82f8b17