Add Notarius reference configuration vocabulary

internal/config/campaign_config_test.go

@@ -138,6 +138,74 @@ func TestCampaignSessionMergeSessionOverridesStableInputs(t *testing.T) {
 	assertResolvedStableInput(t, cfg.StableInputs.PartyFile, "./session-party.yml", sessionPath, "session_config")
 }
 
+func TestCampaignSessionMergeSpellCatalog(t *testing.T) {
+	tests := []struct {
+		name          string
+		campaignValue string
+		sessionValue  string
+		wantPath      string
+		wantSource    string
+	}{
+		{name: "omitted", wantPath: "", wantSource: "campaign_config"},
+		{name: "campaign inherited", campaignValue: "./campaign-spells.json", wantPath: "./campaign-spells.json", wantSource: "campaign_config"},
+		{name: "session override", campaignValue: "./campaign-spells.json", sessionValue: "./session-spells.json", wantPath: "./session-spells.json", wantSource: "session_config"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			campaignSpell := ""
+			if tt.campaignValue != "" {
+				campaignSpell = "  spell_catalog_file: " + tt.campaignValue + "\n"
+			}
+			sessionSpell := ""
+			if tt.sessionValue != "" {
+				sessionSpell = "  spell_catalog_file: " + tt.sessionValue + "\n"
+			}
+			pipelinePath, campaignPath, sessionPath := writeCampaignConfigTestFiles(t,
+				"campaign_id: sample-campaign\ninputs:\n  speakers_file: ./speakers.yml\n  autocorrect_file: ./autocorrect.yml\n  glossary_file: ./glossary.yml\n  players_file: ./players.yml\n  party_file: ./party.yml\n"+campaignSpell,
+				"session_id: 2026-05-03\ninputs:\n  audio_dir: ./audio\n"+sessionSpell,
+			)
+
+			cfg, err := LoadWithSessionOptions(pipelinePath, campaignPath, sessionPath, SessionLoadOptions{})
+			if err != nil {
+				t.Fatalf("LoadWithSessionOptions() error = %v", err)
+			}
+			wantConfigPath := campaignPath
+			if tt.wantSource == "session_config" {
+				wantConfigPath = sessionPath
+			}
+			assertResolvedStableInput(t, cfg.StableInputs.SpellCatalogFile, tt.wantPath, wantConfigPath, tt.wantSource)
+			if cfg.Session.Inputs.SpellCatalogFile != tt.wantPath {
+				t.Fatalf("session spell_catalog_file = %q, want %q", cfg.Session.Inputs.SpellCatalogFile, tt.wantPath)
+			}
+		})
+	}
+}
+
+func TestCampaignSessionMergeRejectsWhitespaceSpellCatalog(t *testing.T) {
+	tests := []struct {
+		name         string
+		campaignLine string
+		sessionLine  string
+		wantErr      string
+	}{
+		{name: "campaign", campaignLine: "  spell_catalog_file: '   '\n", wantErr: "campaign.inputs.spell_catalog_file"},
+		{name: "session", sessionLine: "  spell_catalog_file: '   '\n", wantErr: "session.inputs.spell_catalog_file"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			pipelinePath, campaignPath, sessionPath := writeCampaignConfigTestFiles(t,
+				"campaign_id: sample-campaign\ninputs:\n  speakers_file: ./speakers.yml\n  autocorrect_file: ./autocorrect.yml\n  glossary_file: ./glossary.yml\n  players_file: ./players.yml\n  party_file: ./party.yml\n"+tt.campaignLine,
+				"session_id: 2026-05-03\ninputs:\n  audio_dir: ./audio\n"+tt.sessionLine,
+			)
+			_, err := LoadWithSessionOptions(pipelinePath, campaignPath, sessionPath, SessionLoadOptions{})
+			if err == nil || !strings.Contains(err.Error(), tt.wantErr) {
+				t.Fatalf("LoadWithSessionOptions() error = %v, want containing %q", err, tt.wantErr)
+			}
+		})
+	}
+}
+
 func TestCampaignRequiresPlayersAndPartyInputs(t *testing.T) {
 	pipelinePath, campaignPath, sessionPath := writeCampaignConfigTestFiles(t,
 		"campaign_id: sample-campaign\ninputs:\n  speakers_file: ./speakers.yml\n  autocorrect_file: ./autocorrect.yml\n  glossary_file: ./glossary.yml\n",