mavend: an unconfigured capability names the gap (V-479)

Netscan and the crawler both declined their own turn when the wiring was
nil, and the question fell through to the search leg. "какие устройства в
сети?" came back as a paragraph about routers in general, and a question
about his own LAN went to an upstream engine — the personal boundary
exists to stop exactly that. A URL he named came back answered as though
he had not named it.

Both now claim the turn once their own recogniser has matched, and say
which capability is missing: net_off and page_off in the query family.

TestQueryWebPassesWhenNotConfigured encoded the old decision, that
announcing a configuration status is only for a capability that exists and
failed. It is rewritten, not deleted: the gap is the answer now.

cmd/mavend/actions_query.go

@@ -367,9 +367,12 @@ func (h *reactiveHandler) queryNetwork(ctx context.Context, t *queryTurn) (strin
 		return "", false
 	}
 	if h.netscan == nil {
-		// Fall through, same as queryHome: an unconfigured scanner must not
-		// swallow "сколько устройств в сети?" before recall has looked.
-		return "", false
+		// The recogniser already matched, so this is a question about HIS LAN
+		// and there is no scanner to answer it. Falling through sent it to the
+		// search leg, which answered with a paragraph about routers in general
+		// and put his network question on an upstream engine (Vikunja #479).
+		// A missing capability names itself.
+		return phraser.Q(phraser.QueryNetOff, nil), true
 	}
 	return h.netscan.scanSummary(ctx)
 }
@@ -524,12 +527,11 @@ func (h *reactiveHandler) queryWeb(ctx context.Context, t *queryTurn) (string, b
 		return "", false
 	}
 	if h.crawler == nil {
-		// Fall through. Reading pages is off unless configured, and on a daemon
-		// where it was never turned on the older behaviour is right: the model
-		// answers the question as if the URL had not been said. Announcing a
-		// configuration status is for a capability that exists and failed, not
-		// for one he never asked for.
-		return "", false
+		// He named a URL, so the question is about that page and nothing else
+		// can answer it. The older comment here argued for falling through and
+		// letting the model answer as if the URL had not been said; that is a
+		// guess dressed as an answer (Vikunja #479).
+		return phraser.Q(phraser.QueryPageOff, nil), true
 	}
 	ctxFetch, cancel := context.WithTimeout(ctx, 30*time.Second)
 	defer cancel()

cmd/mavend/crawls_test.go

@@ -125,13 +125,17 @@ func TestQueryWebPassesWithoutAURL(t *testing.T) {
 	}
 }
 
-// A daemon where page reading was never turned on — the default — answers the
-// question the way it did before the capability existed. Claiming the turn to
-// report a configuration status is for something that exists and failed.
-func TestQueryWebPassesWhenNotConfigured(t *testing.T) {
+// A daemon where page reading was never turned on names the gap. He asked
+// about one page, nothing else on the box can read it, and the old behaviour
+// here was to answer as though the URL had not been said (Vikunja #479).
+func TestQueryWebNamesTheGapWhenNotConfigured(t *testing.T) {
 	h := buildWebHandler(nil)
-	if reply, ok := askWeb(h, "посмотри https://example.org/page"); ok {
-		t.Fatalf("an unconfigured crawler claimed the turn with %q", reply)
+	reply, ok := askWeb(h, "посмотри https://example.org/page")
+	if !ok {
+		t.Fatal("an unconfigured crawler let the page question fall through")
+	}
+	if !phraser.IsQ(phraser.QueryPageOff, nil, reply) {
+		t.Errorf("got %q, want the gap named", reply)
 	}
 }
 

cmd/mavend/netscan_test.go

@@ -10,6 +10,8 @@ import (
 
 	"github.com/kami/maven/internal/config"
 	"github.com/kami/maven/internal/ipc"
+	"github.com/kami/maven/internal/phraser"
+	"github.com/kami/maven/internal/router"
 )
 
 func TestWireNetScanOffUnlessEnabled(t *testing.T) {
@@ -169,3 +171,22 @@ func TestScanSummarySpeaksACountAndWritesTheAddresses(t *testing.T) {
 		t.Errorf("a repeat question rescanned and rewrote the record (%d notes)", api.n)
 	}
 }
+
+// An unconfigured scanner names the gap instead of declining the turn.
+//
+// Falling through sent "какие устройства в сети?" to the search leg, which
+// answered with a paragraph about routers in general — and put a question about
+// his own LAN on an upstream engine, which the personal boundary exists to
+// prevent (Vikunja #479).
+func TestQueryNetworkNamesTheGapWhenNotConfigured(t *testing.T) {
+	h := &reactiveHandler{}
+	reply, ok := h.queryNetwork(context.Background(), &queryTurn{
+		dec: router.Decision{Utterance: "какие устройства в сети?"},
+	})
+	if !ok {
+		t.Fatal("an unconfigured scanner let the question fall through to search")
+	}
+	if !phraser.IsQ(phraser.QueryNetOff, nil, reply) {
+		t.Errorf("got %q, want the gap named", reply)
+	}
+}