Label the destination on 33 fixture cases (V-659)

Twenty-eight existing query cases get a want_source and five new ones
arrive with theirs. Every label is the destination that SHOULD claim the
turn, which on the five new cases is not the one that did: they were
observed failing on the box on 2026-08-07, so the fixture fails on the day
it is written.

Seven cases assert the SourceUnknown floor, and six of those are homelab
operations. They cluster because SourceRecall, SourceNetwork and
SourceAttention overlap on every question about the box: mavpoll writes its
netdata and uptime-kuma observations into the fact store recall reads.
Naming one destination there takes the other two off a turn that needs
them. That is a finding about the enum, not a gap in the labelling.

The fixture's grammar mirror had drifted. WorldQueryGrammars went into
buildRouter with V-655 and never into baselineGrammars, so the fixture was
scoring a grammar set the daemon does not run — the exact thing the comment
above that function forbids. Adding it moved the destination number 9/33 to
12/33 and moved nothing else.

Measured classifier+onnx: intent 73/96 (76.0%), was 69/91 (75.8%). Four of
the five new cases pass and no existing case moved. Destination 12/33
(36.4%), and the split is the point. World is 5/5, because a stage 0 rule
names it. Calendar is 2/6, because the possessive agenda rules deliberately
do not. Recall is 0/15, because nothing anywhere names it yet.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013ptwopxyo3Z2kwFckHkLvN

internal/router/eval/eval_test.go

@@ -266,6 +266,11 @@ func baselineGrammars(acts router.ActMatcher) []router.Grammar {
 	// Same order as buildRouter (voicewire.go). The fixture is only worth
 	// anything while its grammar set is the daemon's grammar set.
 	grammars = append(grammars, router.AgendaQueryGrammars()...)
+	// After the agenda rules and before the feed and list rules, same as
+	// voicewire.go: "что такое лента" is a definition question and the feed
+	// rule would claim it on the noun alone (V-655). Missing here until V-659,
+	// so the fixture was scoring a grammar set the daemon does not run.
+	grammars = append(grammars, router.WorldQueryGrammars()...)
 	grammars = append(grammars, router.FeedQueryGrammar())
 	// The list side of the same exposure: a phrasing with no possessive in it
 	// ("список дел") routed system and never reached queryTasks (Vikunja #467).