Rip out Ollama: direct_route only, no LLM layer

Pete moves to a remote host without Ollama access. Every source must
declare a direct_route channel; the classifier, explainer, semantic
dedup, !explain summaries, feed_hint, and the recent_headlines /
classification_log tables are gone. Deterministic dedup (canonical URL,
headline_norm, per-channel cooldown) remains.

main_test.go

@@ -58,7 +58,7 @@ func TestRunSeed_IngestsStories(t *testing.T) {
 				FeedURL:             ts.URL,
 				Tier:                1,
 				PollIntervalMinutes: 20,
-				FeedHint:            "tech",
+				DirectRoute:         "tech",
 				Enabled:             true,
 			},
 		},
@@ -74,13 +74,11 @@ func TestRunSeed_IngestsStories(t *testing.T) {
 		}
 	}
 
-	// Should have no unclassified stories (seed marks classified=true)
-	unclassified, err := storage.GetUnclassifiedStories("Test Feed")
-	if err != nil {
-		t.Fatal(err)
-	}
-	if len(unclassified) != 0 {
-		t.Errorf("expected 0 unclassified after seed, got %d", len(unclassified))
+	// Seed marks rows classified=1; confirm none remain unclassified.
+	var unclassified int
+	storage.Get().QueryRow(`SELECT COUNT(*) FROM stories WHERE classified = 0`).Scan(&unclassified)
+	if unclassified != 0 {
+		t.Errorf("expected 0 unclassified after seed, got %d", unclassified)
 	}
 }
 
@@ -96,7 +94,7 @@ func TestRunSeed_Idempotent(t *testing.T) {
 				FeedURL:             ts.URL,
 				Tier:                1,
 				PollIntervalMinutes: 20,
-				FeedHint:            "tech",
+				DirectRoute:         "tech",
 				Enabled:             true,
 			},
 		},
@@ -139,35 +137,6 @@ func TestRunSeed_SkipsDisabledSources(t *testing.T) {
 	}
 }
 
-func TestRunSeed_RecentHeadlinesPopulated(t *testing.T) {
-	setupTestDB(t)
-	ts := serveFeed(t, 2)
-	defer ts.Close()
-
-	cfg := &config.Config{
-		Sources: []config.SourceConfig{
-			{
-				Name:                "Test Feed",
-				FeedURL:             ts.URL,
-				Tier:                1,
-				PollIntervalMinutes: 20,
-				FeedHint:            "tech",
-				Enabled:             true,
-			},
-		},
-	}
-
-	runSeed(cfg)
-
-	headlines, err := storage.GetRecentHeadlines(10)
-	if err != nil {
-		t.Fatal(err)
-	}
-	if len(headlines) != 2 {
-		t.Errorf("expected 2 recent headlines after seed, got %d", len(headlines))
-	}
-}
-
 func TestRunSeed_BadFeedURL(t *testing.T) {
 	setupTestDB(t)