Merge hand test fix: answer questions about the Galaxy view from its scope and catch restated answers (K45, K46)

Signed-off-by: Bernhard Jackiewicz <bj@techport.io>

graph-ui/src/browser-ai/BrowserChatDock.tsx

@@ -3,7 +3,7 @@ import type { BrowserAiProgress } from './browser-ai-controller';
 import { createBrowserChatRuntime, type BrowserChatRuntime } from './browser-ai-runtime';
 import { BROWSER_MODELS, getBrowserModel, isBrowserModelCached, removeBrowserModelCache, type BrowserModel } from './model-policy';
 import { keepAgent, loadProgress, offerAgent, peekAgent, takeAgent, type AgentHandover, type LoadProgress } from './agent-handover';
-import { buildChatMessages, selectionLocation, sentInHistory, snapshotAttachment, snapshotReaderContext, trimChatHistory, type BrowserChatAttachment, type BrowserChatContext, type BrowserChatReaderContext, type BrowserChatSource, type BrowserChatTurn } from './chat-model';
+import { buildChatMessages, echoRetryRequest, selectionLocation, sentInHistory, snapshotAttachment, snapshotReaderContext, trimChatHistory, type BrowserChatAttachment, type BrowserChatContext, type BrowserChatReaderContext, type BrowserChatSource, type BrowserChatTurn } from './chat-model';
 import { explanationInput, EXPLANATION_DELAY_MS, type ExplanationInput } from './proactive-selection';
 import { prepareExplanationContext, selectionSummary, type PreparedExplanationContext } from './explanation-context';
 import { AUTO_INPUT_TOKENS, AUTO_OUTPUT_TOKENS, citedInterpretation, explanationMode, explanationSentence, namesNotIn, parseExplanationResponse, explanationMessages, formatExplanationEvidence, type DroppedReason } from './explanation-response';
@@ -11,7 +11,7 @@ import { carriedSource, selectionSubject, SYMBOL_SOURCE_LINES, sourceTargetOf, s
 import { codeFacts, codeFactsMarkdown, codeSourceFacts } from './code-facts';
 import { relationshipAnswer, relationshipSuggestion } from './relationship-answer';
 import { clampTokenLimits, tokenLimitBounds, tokenLimitsFor, useAgentPreferences, type TokenLimits } from './agent-preferences';
-import { browserChatText, chatRound3Text, evidenceNote, groundedText, relationshipWords, topicText } from './strings';
+import { browserChatText, chatRound3Text, evidenceNote, groundedText, relationshipWords, topicText, viewText } from './strings';
 import { isGpuRuntimeFailure, BrowserRuntimeFatalError } from './runtime-fault';
 import ChatMarkdown from './ChatMarkdown';
 import AgentSettingsDialog from './AgentSettingsDialog';
@@ -20,7 +20,9 @@ import { chatTopic, contextFreeFollowUp, followedTopic, missingContextAnswer, qu
 import { isDataFile, readerFacts } from './file-facts';
 import { fileOutline } from './file-outline';
 import { readGalaxyEvidence, type GalaxyEvidence } from './galaxy-evidence';
-import { followUpAnswer, generalQuestion, knownNames, noQuestion, noQuestionAnswer, type ExampleSubject } from './question-intent';
+import { followUpAnswer, generalQuestion, knownNames, noQuestion, noQuestionAnswer, viewQuestion, type ExampleSubject } from './question-intent';
+import { viewAnswer } from './view-answer';
+import { echoAnswer } from './echo-answer';
 import './browser-chat.css';
 
 export type { BrowserChatAttachment, BrowserChatContext, BrowserChatReaderContext, BrowserChatSource } from './chat-model';
@@ -90,6 +92,17 @@ function groundedExplanation(summary: readonly string[], sentence: string | unde
     const note = sentence ? words.factsAndSentence : dropped ? words.sentenceDropped(reason) : words.factsOnly;
     return [summary.map(line => `- ${line}`).join('\n'), ...code ? [code] : [], ...sentence ? [sentence] : [], `_${note}_`].join('\n\n');
 }
+/** What a turn says when the model only restated the question: that it gave no answer, then the
+ * facts of the selection or open file the question was about, as a general question lists them (H2). */
+function echoedAnswer(output: string, language: 'en' | 'de', graph: BrowserChatContext | undefined, reader: BrowserChatReaderContext | undefined): string {
+    const text = viewText[language];
+    const echoed = output.replace(/\s+/g, ' ').trim();
+    const shown = echoed.length > 80 ? `${echoed.slice(0, 79)}…` : echoed;
+    const source = reader?.source;
+    const summary = graph ? selectionSummary(graph, language) : source ? isDataFile(source.path) ? readerFacts(reader) : codeSourceFacts(source, language).summary : [];
+    if (!summary.length) return `${text.noAnswer(shown)} ${text.rephrase}`;
+    return `${text.noAnswer(shown)} ${text.factsFollow}\n\n${groundedExplanation(summary, undefined, false, graph ? 'graph' : 'file', language)}`;
+}
 /** The same while the model writes its sentence. */
 const writingExplanation = (summary: readonly string[], note: string, code?: string): string =>
     summary.length ? [summary.map(line => `- ${line}`).join('\n'), ...code ? [code] : [], `_${note}_`].join('\n\n') : '';
@@ -663,6 +676,17 @@ export default function BrowserChatDock({ proactiveSelection, selectionScope = "
         const language = questionLanguage(prompt);
         const galaxy = currentGraph[0] ? readGalaxyEvidence(currentGraph[0].text) : undefined;
         const fileSource = reader?.source;
+        // A question about the current view ("erkläre die aktuelle Hierarchie", "what am I looking at")
+        // is answered from the loaded scope: the model only restated it (H1).
+        const view = !retry && !source && !extra.length && galaxy && viewQuestion(prompt, galaxyNames(galaxy)) === 'general' ? viewAnswer(galaxy, language) : undefined;
+        if (view) {
+            const id = `local-turn-${crypto.randomUUID()}`, scope = currentGraph[0];
+            setTurns(previous => [...previous, { id, prompt, context: extra, topic, listedFrom: scope, replyLanguage: language,
+                evidence: prepareExplanationContext(undefined, scope, chatEvidence, knownSource(scope)), modelId: model.id, request: [],
+                answer: view, status: 'complete', answeredFrom: 'graph' }]);
+            consume(); listSource(id, scope);
+            return;
+        }
         // A prompt that asks nothing ("test", "hallo") gets questions it could ask, not an echo of the model (C6).
         const known = knownNames({ galaxy, names: galaxy ? galaxyNames(galaxy) : fileSource ? [fileSource.path] : [],
             texts: [fileSource?.text ?? '', source?.text ?? '', ...currentGraph.filter(() => !galaxy).map(item => item.label), ...extra.map(item => item.label)] });
@@ -726,7 +750,8 @@ export default function BrowserChatDock({ proactiveSelection, selectionScope = "
             consume();
             return;
         }
-        let request = grounded ? explanationMessages(packet!, grounded.subject, language) : retry && !ask ? retry.request.map(message => ({ ...message })) : makeRequest();
+        // An echo asked again is told not to restate the question: the same request gets the same echo (H2).
+        let request = grounded ? explanationMessages(packet!, grounded.subject, language) : retry && !ask ? retry.echo ? echoRetryRequest(retry.request) : retry.request.map(message => ({ ...message })) : makeRequest();
         if (automaticRun) {
             automaticRun.cancelled = true; lastAttempt.current = undefined;
             setQuestionQueued(true); currentRuntime.stop();
@@ -791,10 +816,19 @@ export default function BrowserChatDock({ proactiveSelection, selectionScope = "
                 // One sentence beside the facts, checked like the sentence of the explanation card.
                 const result = parseExplanationResponse(output, packet!);
                 const checked = !stopRequested.current && result.status === 'generated' ? explanationSentence(result.markdown, packet!, request.map(message => message.content).join('\n')) : {};
-                const answer = groundedExplanation(grounded.summary, checked.sentence, checked.reason ?? checked.dropped !== undefined, grounded.from, language, code);
+                // A sentence that only restates the question says nothing beside the facts (H2).
+                const echoed = checked.sentence !== undefined && echoAnswer(checked.sentence, prompt);
+                const answer = groundedExplanation(grounded.summary, echoed ? undefined : checked.sentence, checked.reason ?? (echoed || checked.dropped !== undefined), grounded.from, language, code);
                 setTurns(previous => previous.map(item => item.id === id ? { ...item, answer, status: stopRequested.current ? 'stopped' : 'complete' } : item));
                 return;
             }
+            // An answer that only restates the question is none: the turn says so, with the facts it was about (H2).
+            if (!stopRequested.current && echoAnswer(output, prompt)) {
+                const about = packetGraph[0] ?? retry?.listedFrom;
+                setTurns(previous => previous.map(item => item.id === id ? { ...item, answer: echoedAnswer(output, language, about, about ? undefined : reader), status: 'complete', echo: true,
+                    replyLanguage: language, ...about ? { listedFrom: about } : {} } : item));
+                return;
+            }
             setTurns(previous => previous.map(item => item.id === id ? { ...item, answer: stopRequested.current ? item.answer : output, status: stopRequested.current ? 'stopped' : 'complete',
                 ...shortened && !stopRequested.current ? { shortened, limit: { inputTokens: limits.inputTokens, outputTokens: limits.outputTokens } } : {} } : item));
         } catch (failure) {
@@ -933,8 +967,8 @@ export default function BrowserChatDock({ proactiveSelection, selectionScope = "
                     </> : null}
                 </SourceDisclosure><div className="cbm-chat-answer-text"><ChatMarkdown text={turn.answer || (turn.status === 'generating' ? 'Thinking…' : turn.status === 'stopped' ? 'Stopped before an answer.' : '')} /></div>
                     {turn.status === 'stopped' && turn.answer && <small>Stopped · partial answer</small>}
-                    {!turn.answeredFrom && turn.answer && (turn.status === 'complete' || turn.status === 'stopped') && <small className="cbm-chat-model-note">{ownWords.modelNote}</small>}
-                    {turn.status !== 'generating' && !turn.answeredFrom && <AnswerNotes shortened={limitNote(turn.shortened, turn.limit)} packet={turn.evidence}
+                    {!turn.answeredFrom && !turn.echo && turn.answer && (turn.status === 'complete' || turn.status === 'stopped') && <small className="cbm-chat-model-note">{ownWords.modelNote}</small>}
+                    {turn.status !== 'generating' && !turn.answeredFrom && !turn.echo && <AnswerNotes shortened={limitNote(turn.shortened, turn.limit)} packet={turn.evidence}
                         unsupported={turn.answer ? namesNotIn(turn.answer, turn.request.map(message => message.content).join('\n')) : []} model={BROWSER_MODELS.find(candidate => candidate.id === turn.modelId)?.displayName ?? turn.modelId} historyOmitted={turn.historyOmitted} />}
                     {turn.status === 'error' && <p className="cbm-chat-turn-error" role="alert">{turn.error}</p>}
                     {index === turns.length - 1 && turn.answeredFrom === 'suggestion' && turn.suggestion && <button type="button" className="cbm-chat-retry"

graph-ui/src/browser-ai/BrowserChatDock.view.test.tsx

@@ -0,0 +1,96 @@
+// @vitest-environment jsdom
+import { describe, expect, it } from 'vitest';
+import { githubFolderEvidence, jsonbAggEvidence } from './galaxy-evidence.fixture';
+import { dockHarness } from './chat-dock.fixture';
+
+const dock = dockHarness();
+
+/** With .github selected in the Galaxy hierarchy, "kkannst du mir die heirarchie erklären" and
+ * "erkläre die aktuelle hierarchy" went to the free model, which answered "Ich kann dir die
+ * Heirarchy erklären." and "Die aktuelle Hierarchie erklärt." (hand test of 2026-10-04, H1, H2). */
+describe('questions about the current view are answered from the loaded scope (H1)', () => {
+    it('lists the middle, the left and the right of the hierarchy in German, without the model', async () => {
+        const { props, runtime } = dock.setup();
+        await dock.render({ ...props, proactiveSelection: githubFolderEvidence('hierarchy') }); await dock.load();
+        for (const question of ['kkannst du mir die heirarchie erklären', 'erkläre die aktuelle hierarchy']) {
+            await dock.ask(question);
+            const answer = dock.answerOf(dock.last()).replace(/\s+/g, ' ');
+            expect(answer).toContain('.github (Ordner) steht in der Mitte; der Ausschnitt geht 1 Schritt in beide Richtungen.');
+            expect(answer).toContain('Links, eingehend: CONTAINS_FOLDER (1): DETACHED');
+            expect(answer).toContain('Rechts, ausgehend: CONTAINS_FILE (4): CODE_OF_CONDUCT.md, FUNDING.yml, pull_request_template.md, SECURITY.md CONTAINS_FOLDER (1): workflows');
+            expect(answer).toContain('So liest du die Hierarchie: eingehende Beziehungen stehen links, ausgehende rechts.');
+            expect(answer).toContain('Aus dem indizierten Graphen gelistet, nicht vom Modell erzeugt.');
+            expect(dock.buttonsOf(dock.last())).toEqual(['Modell fragen']);
+            expect(dock.notesOf(dock.last())).toEqual([]);
+        }
+        expect(runtime.countTokens).not.toHaveBeenCalled();
+        expect(runtime.chat).not.toHaveBeenCalled();
+        // "Modell fragen" asks the model the same question about the same scope, below the list.
+        runtime.chat.mockResolvedValueOnce('Die Hierarchie zeigt `.github` mit vier Dateien und dem Ordner `workflows`.');
+        await dock.click('Modell fragen', dock.last());
+        expect(runtime.chat).toHaveBeenCalledOnce();
+        expect(runtime.chat.mock.calls[0][0].at(-1)!.content).toContain('erkläre die aktuelle hierarchy');
+        expect(dock.turns()).toHaveLength(3);
+        expect(dock.answerOf(dock.last())).toBe('Die Hierarchie zeigt .github mit vier Dateien und dem Ordner workflows.');
+    });
+
+    it('says in English that the galaxy view shows the same scope as a cloud', async () => {
+        const { props, runtime } = dock.setup();
+        await dock.render({ ...props, proactiveSelection: githubFolderEvidence('galaxy') }); await dock.load();
+        await dock.ask('what does this view show?');
+        const answer = dock.answerOf(dock.last()).replace(/\s+/g, ' ');
+        expect(answer).toContain('.github (Folder) is in the middle; the scope reaches 1 hop in both directions.');
+        expect(answer).toContain('Outgoing: CONTAINS_FILE (4)');
+        expect(answer).toContain('The galaxy view shows this scope as a cloud.');
+        expect(answer).not.toContain('Links');
+        expect(dock.buttonsOf(dock.last())).toEqual(['Ask the model']);
+        expect(runtime.chat).not.toHaveBeenCalled();
+    });
+});
+
+describe('a model answer that only restates the question is not shown as an answer (H2)', () => {
+    it('says the model gave no answer, lists the facts of the selection and offers to ask again', async () => {
+        const { props, runtime } = dock.setup();
+        runtime.chat.mockResolvedValueOnce('Ich kann dir die Ordner erklären.').mockResolvedValueOnce('Weil GitHub dort Vorlagen und Workflows sucht.');
+        await dock.render({ ...props, proactiveSelection: githubFolderEvidence('hierarchy') }); await dock.load();
+        await dock.ask('kannst du mir die ordner erklären, die es hier gibt?');
+        expect(runtime.chat).toHaveBeenCalledOnce();
+        const answer = dock.answerOf(dock.last());
+        expect(answer).toContain('Das Modell hat keine Antwort gegeben, es hat nur die Frage wiederholt („Ich kann dir die Ordner erklären.“).');
+        expect(answer).toContain('Ausgewählt: .github (Ordner) in .github.');
+        expect(answer).toContain('Ausgehend: 5 Beziehungen zu 5 Symbolen (CONTAINS_FILE 4, CONTAINS_FOLDER 1).');
+        expect(answer).toContain('Aus dem indizierten Graphen gelistet, nicht vom Modell erzeugt.');
+        expect(dock.notesOf(dock.last())).toEqual([]);
+        expect(dock.buttonsOf(dock.last())).toEqual(['Erneut fragen']);
+        // Asked again, the model is told not to restate the question; its real answer replaces the note.
+        await dock.click('Erneut fragen', dock.last());
+        expect(runtime.chat).toHaveBeenCalledTimes(2);
+        expect(runtime.chat.mock.calls[1][0].at(-1)!.content).toContain('Do not restate the question.');
+        expect(dock.turns()).toHaveLength(1);
+        expect(dock.answerOf(dock.last())).toBe('Weil GitHub dort Vorlagen und Workflows sucht.');
+        expect(dock.notesOf(dock.last())).toContain('Vom lokalen Modell erzeugt; kann falsch sein.');
+    });
+
+    it('keeps a real short answer', async () => {
+        const { props, runtime } = dock.setup();
+        runtime.chat.mockResolvedValueOnce('Nein, 4.').mockResolvedValueOnce('Ja, 11.');
+        await dock.render({ ...props, proactiveSelection: githubFolderEvidence('hierarchy') }); await dock.load();
+        await dock.ask('Sind es mehr als zehn Dateien?');
+        expect(dock.answerOf(dock.last())).toBe('Nein, 4.');
+        await dock.ask('Wie viele Tests hat das Projekt ungefähr?');
+        expect(dock.answerOf(dock.last())).toBe('Ja, 11.');
+        expect(dock.notesOf(dock.last())).toContain('Vom lokalen Modell erzeugt; kann falsch sein.');
+    });
+
+    it('leaves out a restating sentence under the facts of a general question', async () => {
+        const { props, runtime } = dock.setup();
+        runtime.chat.mockResolvedValueOnce('Ich erkläre dir das.');
+        await dock.render({ ...props, proactiveSelection: jsonbAggEvidence() }); await dock.load();
+        await dock.ask('erklär mir das');
+        expect(runtime.chat).toHaveBeenCalledOnce();
+        const answer = dock.answerOf(dock.last());
+        expect(answer).toContain('Ausgewählt: JSONBAgg (Klasse)');
+        expect(answer).not.toContain('Ich erkläre dir das.');
+        expect(answer).toContain('Der Satz des Modells wurde weggelassen');
+    });
+});

graph-ui/src/browser-ai/chat-model.ts

@@ -64,6 +64,9 @@ export interface BrowserChatTurn {
     /** The model's answer to a question the chat had answered itself ("Ask the model"). It
      * stands below that answer instead of replacing it: the listed facts stay (B1). */
     askedModel?: boolean;
+    /** The model only restated the question: the turn says so and lists the facts of the selection
+     * instead (H2). Asked again, the model is told not to restate it. */
+    echo?: boolean;
 }
 
 export interface BrowserChatContext {
@@ -166,9 +169,19 @@ export function historyAnswer(turn: BrowserChatTurn): string {
 }
 
 /** Whether a turn goes into the history of a later request: an answer, not a suggestion,
- * the chat's own hint or its reply that a question has no context. */
+ * the chat's own hint, its reply that a question has no context, or a restated question (H2). */
 export const sentInHistory = (turn: BrowserChatTurn): boolean => turn.status !== 'error' && turn.status !== 'generating'
-    && turn.answeredFrom !== 'suggestion' && turn.answeredFrom !== 'local' && turn.answeredFrom !== 'hint';
+    && turn.answeredFrom !== 'suggestion' && turn.answeredFrom !== 'local' && turn.answeredFrom !== 'hint' && !turn.echo;
+
+/** Added to a question asked again after the model only restated it: the same request got the same
+ * echo, the model does not sample (H2). */
+export const ECHO_RETRY = 'Your last answer only restated the question. Do not restate the question. Answer it with the facts of the evidence, or name the fact that is missing.';
+/** The request of a question asked again after an echo: the last user message carries ECHO_RETRY once. */
+export function echoRetryRequest(request: readonly BrowserChatMessage[]): BrowserChatMessage[] {
+    const last = request.length - 1;
+    return request.map((message, index) => index === last && message.role === 'user' && !message.content.includes(ECHO_RETRY)
+        ? { ...message, content: `${message.content}\n\n${ECHO_RETRY}` } : { ...message });
+}
 
 export function buildChatMessages(turns: readonly BrowserChatTurn[], prompt: string, attachment?: BrowserChatAttachment, context: readonly BrowserChatContext[] = [], readerContext?: BrowserChatReaderContext, currentContext: readonly BrowserChatContext[] = [], currentEvidence?: string,
     language?: keyof typeof ANSWER_LANGUAGE): BrowserChatMessage[] {

graph-ui/src/browser-ai/echo-answer.test.ts

@@ -0,0 +1,35 @@
+import { describe, expect, it } from 'vitest';
+import { echoAnswer } from './echo-answer';
+
+/** "Ich kann dir die Heirarchy erklären." and "Die aktuelle Hierarchie erklärt." were shown as
+ * answers: they hold nothing beyond the words of the question (hand test of 2026-10-04, H2). */
+describe('answers that only restate the question (H2)', () => {
+    it.each([
+        ['kkannst du mir die heirarchie erklären', 'Ich kann dir die Heirarchy erklären.'],
+        ['erkläre die aktuelle hierarchy', 'Die aktuelle Hierarchie erklärt.'],
+        ['erkläre die aktuelle hierarchy', 'Gerne erkläre ich dir die aktuelle Hierarchie!'],
+        ['erkläre die aktuelle hierarchy', 'Ich kann dir die aktuelle Struktur des Projekts erklären.'],
+        ['explain the hierarchy', 'I can explain the hierarchy.'],
+        ['explain the hierarchy', 'Sure, I can explain the current hierarchy for you.'],
+        ['what does this view show?', 'This view shows the view.'],
+        ['erklär mir das', 'Ich erkläre dir das.'],
+        ['Was zeigt diese Ansicht?', 'Ja, ich kann dir zeigen, was diese Ansicht zeigt.'],
+    ])('finds no answer to %s in %s', (question, answer) => {
+        expect(echoAnswer(answer, question)).toBe(true);
+    });
+
+    it.each([
+        ['Wie viele Aufrufer hat JSONBAgg?', 'Ja, 11.'],
+        ['Hat JSONBAgg 11 Aufrufer?', 'Ja, 11.'],
+        ['Ist .github ein Ordner?', 'Ja.'],
+        ['Is this a class?', 'No.'],
+        ['Wie viele Dateien enthält .github?', '3 Dateien enthält .github.'],
+        ['was ist .github?', 'Das ist ein Ordner.'],
+        ['what is JSONBAgg?', 'An aggregate for PostgreSQL.'],
+        ['erkläre die aktuelle hierarchy', 'Die Hierarchie zeigt `.github` in der Mitte, links `DETACHED` und rechts vier Dateien und den Ordner `workflows`.'],
+        ['explain the hierarchy', 'I can explain it: `.github` contains four files and the `workflows` folder.'],
+        ['erkläre die aktuelle hierarchy', ''],
+    ])('keeps the answer to %s: %s', (question, answer) => {
+        expect(echoAnswer(answer, question)).toBe(false);
+    });
+});

graph-ui/src/browser-ai/echo-answer.ts

@@ -0,0 +1,51 @@
+import { typoBudget, withinEdits } from './relationship-answer';
+
+/** Whether a model answer only restates its question (H2).
+ *
+ * With .github selected, "kkannst du mir die heirarchie erklären" got "Ich kann dir die Heirarchy
+ * erklären." and "erkläre die aktuelle hierarchy" got "Die aktuelle Hierarchie erklärt.": nothing
+ * but the words of the question. Such an answer is no answer. A short real one stays: "Ja, 11."
+ * answers a count, "Ja." or "No." a yes or no question, "Das ist ein Ordner." a "was ist". */
+
+/** Words that carry nothing of their own in either language: pronouns, articles, auxiliaries, politeness. */
+const STOP = new Set([
+    'ich', 'du', 'er', 'sie', 'es', 'wir', 'ihr', 'mir', 'dir', 'mich', 'dich', 'uns', 'euch', 'ihm', 'ihn', 'ihnen', 'der', 'die', 'das', 'den', 'dem', 'des', 'ein', 'eine',
+    'einen', 'einem', 'einer', 'eines', 'und', 'oder', 'aber', 'ist', 'sind', 'war', 'bin', 'bist', 'hat', 'habe', 'hast', 'haben', 'kann', 'kannst', 'können', 'könnte',
+    'könntest', 'will', 'werde', 'wird', 'werden', 'gerne', 'gern', 'natürlich', 'klar', 'sicher', 'hier', 'da', 'dies', 'diese', 'dieser', 'dieses', 'diesen', 'diesem',
+    'mal', 'bitte', 'so', 'auch', 'noch', 'nur', 'zu', 'mit', 'von', 'für', 'auf', 'in', 'im', 'an', 'am', 'um', 'was', 'wie', 'wo', 'wer', 'dass', 'jetzt', 'gerade', 'dazu',
+    'i', 'you', 'he', 'she', 'it', 'we', 'they', 'me', 'my', 'your', 'us', 'the', 'a', 'an', 'this', 'that', 'these', 'those', 'is', 'are', 'was', 'be', 'am', 'can', 'could',
+    'will', 'would', 'shall', 'should', 'do', 'does', 'did', 'of', 'to', 'for', 'in', 'on', 'at', 'by', 'with', 'and', 'or', 'sure', 'certainly', 'course', 'happy', 'glad',
+    'here', 'there', 'let', 'what', 'how', 'ok', 'okay', 'please', 'so', 'just', 'now',
+]);
+/** A reply to a yes or no question. */
+const YES_NO = new Set(['ja', 'nein', 'doch', 'yes', 'no', 'nope', 'yep']);
+/** "I can explain X", "Ich kann dir X erklären", "Gerne erkläre ich ...": an offer, not an answer. */
+const RESTATEMENT = /(?:^|[^\p{L}])(?:i can|i could|i will|i'll|i would|i'd|let me|happy to|glad to|ich kann|kann ich|ich könnte|könnte ich|ich werde|werde ich|ich erkläre|erkläre ich|gerne|gern)(?=[^\p{L}]|$)/iu;
+/** Words a restatement may add without saying anything: "die aktuelle Struktur des Projekts". */
+const RESTATED_WORDS = 3;
+
+const wordsOf = (text: string): string[] => (text.match(/`[^`]+`|[\p{L}\p{N}_][\p{L}\p{N}_.:/-]*/gu) ?? []).map(word => word.replace(/[.:/-]+$/, '')).filter(Boolean);
+/** A name, path or number: something the question did not say is information, however short the answer. */
+const codeShaped = (word: string): boolean => /^`|\p{N}|_|[./:]|\p{Ll}\p{Lu}|\p{Lu}{2}\p{Ll}/u.test(word);
+/** The same word, mistyped or inflected: "Heirarchy" for "heirarchie", "erklärt" for "erkläre". */
+function same(left: string, right: string): boolean {
+    if (left === right) return true;
+    const longer = left.length >= right.length ? left : right, shorter = longer === left ? right : left;
+    if (shorter.length >= 4 && withinEdits(left, right, typoBudget(longer))) return true;
+    let prefix = 0;
+    while (prefix < shorter.length && left[prefix] === right[prefix]) prefix++;
+    return prefix >= 4 && prefix >= shorter.length - 2;
+}
+
+export function echoAnswer(answer: string, question: string): boolean {
+    const words = wordsOf(answer);
+    if (!words.length) return false;
+    const asked = wordsOf(question).map(word => word.toLowerCase().replace(/`/g, ''));
+    const content = words.filter(word => {
+        const lower = word.toLowerCase().replace(/`/g, '');
+        return !STOP.has(lower) && !YES_NO.has(lower) && !asked.some(other => same(lower, other));
+    });
+    if (content.some(codeShaped)) return false;
+    if (RESTATEMENT.test(answer)) return content.length < RESTATED_WORDS;
+    return content.length === 0 && !words.some(word => YES_NO.has(word.toLowerCase()));
+}

graph-ui/src/browser-ai/galaxy-evidence.fixture.ts

@@ -59,3 +59,19 @@ export function largeFolderScope(): SelectionEvidence {
     return galaxyScopeEvidence({ project: 'django-demo', identity: { kind: 'folder', path: 'django/contrib/postgres', name: 'postgres' }, nodes, edges,
         roots: new Set(roots.map(root => root.id)), depth: 1, direction: 'both', edgeTypes: 'all', state: 'complete-indexed-scope', exhausted: false });
 }
+
+/** `.github` in django-demo at one layer, as the hand test of 2026-10-04 showed it in the hierarchy:
+ * the branch node of the detached checkout above it, four files and the workflows folder below it. */
+export function githubFolderEvidence(display?: 'galaxy' | 'hierarchy', overrides: { depth?: number; direction?: string; nodes?: GraphNode[]; edges?: GraphEdge[] } = {}): BrowserChatContext {
+    const folder = (id: number, name: string, path: string): GraphNode => ({ id, name, label: 'Folder', file_path: path, qualified_name: `django-demo.${path}`, x: 0, y: 0, z: 0, size: 1, color: '#999' });
+    const file = (id: number, name: string): GraphNode => ({ id, name, label: 'File', file_path: `.github/${name}`, qualified_name: `django-demo..github.${name}`, x: 0, y: 0, z: 0, size: 1, color: '#999' });
+    const root = folder(1, '.github', '.github');
+    const branch: GraphNode = { id: 2, name: 'DETACHED', label: 'Branch', qualified_name: 'django-demo.__branch__.detached', x: 0, y: 0, z: 0, size: 1, color: '#999' };
+    const files = ['CODE_OF_CONDUCT.md', 'FUNDING.yml', 'pull_request_template.md', 'SECURITY.md'].map((name, index) => file(10 + index, name));
+    const workflows = folder(20, 'workflows', '.github/workflows');
+    const edges: GraphEdge[] = [{ source: branch.id, target: root.id, type: 'CONTAINS_FOLDER' }, ...files.map(item => ({ source: root.id, target: item.id, type: 'CONTAINS_FILE' })),
+        { source: root.id, target: workflows.id, type: 'CONTAINS_FOLDER' }];
+    return selectionEvidenceContext(galaxyScopeEvidence({ project: 'django-demo', identity: { kind: 'folder', path: '.github', name: '.github' },
+        nodes: [root, branch, ...files, workflows, ...overrides.nodes ?? []], edges: [...edges, ...overrides.edges ?? []], roots: new Set([root.id]),
+        depth: overrides.depth ?? 1, direction: overrides.direction ?? 'both', edgeTypes: 'all', state: 'complete-indexed-scope', exhausted: false, ...display ? { display } : {} }));
+}

graph-ui/src/browser-ai/galaxy-evidence.ts

@@ -27,6 +27,8 @@ export interface GalaxyEvidence {
     relationships: Omit<ScopeRelationships, 'incomingSymbols' | 'outgoingSymbols'> & { incomingSymbols?: number; outgoingSymbols?: number };
     /** The snapshot budget cut relationship data, so counts and names can be incomplete. */
     truncated: boolean;
+    /** Which picture of the scope Galaxy shows; undefined where the snapshot does not say (H1). */
+    display?: 'galaxy' | 'hierarchy';
 }
 
 const record = (value: unknown): Record<string, unknown> | undefined => value !== null && typeof value === 'object' && !Array.isArray(value)
@@ -93,7 +95,7 @@ export function readGalaxyEvidence(snapshot: string): GalaxyEvidence | undefined
         relationships: { incoming: groups(relationships?.incoming, project), incomingSymbols: total(relationships?.incomingSymbols),
             outgoing: groups(relationships?.outgoing, project), outgoingSymbols: total(relationships?.outgoingSymbols),
             internal: totals(relationships?.internal), beyond: totals(relationships?.beyond) },
-        truncated,
+        truncated, ...scope.display === 'galaxy' || scope.display === 'hierarchy' ? { display: scope.display } : {},
     };
 }
 
@@ -141,15 +143,21 @@ export function relationshipLine(group: RelationshipGroup, _side: 'incoming' | '
     return { text: head + body + more(listed), listed };
 }
 
-/** "1 hop in both directions, all relationship types; complete." in words, never as fields. */
-export function scopeSentence(evidence: GalaxyEvidence, words: RelationshipWords): string {
+/** The direction, the edge types and how complete the scope is, in words. */
+export function scopeParts(evidence: GalaxyEvidence, words: RelationshipWords): { direction: string; types: string; state: string } {
     const direction = evidence.direction === 'inbound' ? words.inbound : evidence.direction === 'outbound' ? words.outbound : words.both;
     const types = evidence.edgeTypes === 'all' ? words.allTypes : words.onlyTypes(evidence.edgeTypes);
     const state = evidence.state === 'complete' ? words.complete : evidence.state === 'loading' ? words.loading
         : evidence.state === 'limited' && evidence.renderLimit ? words.renderLimited(evidence.renderLimit.layer, evidence.renderLimit.limit, evidence.renderLimit.kind)
             : words.partial(evidence.error);
     const notes = [state, ...evidence.state === 'complete' && evidence.exhausted ? [words.exhausted] : [], ...evidence.truncated ? [words.truncated] : []];
-    return words.scope(`${words.hops(evidence.depth)} ${direction}, ${types}`, words.size(evidence.nodes, evidence.edges), notes.join('; '));
+    return { direction, types, state: notes.join('; ') };
+}
+
+/** "1 hop in both directions, all relationship types; complete." in words, never as fields. */
+export function scopeSentence(evidence: GalaxyEvidence, words: RelationshipWords): string {
+    const { direction, types, state } = scopeParts(evidence, words);
+    return words.scope(`${words.hops(evidence.depth)} ${direction}, ${types}`, words.size(evidence.nodes, evidence.edges), state);
 }
 
 /** Whether the loaded scope followed this side at all; otherwise "none" would be a guess. */

graph-ui/src/browser-ai/question-intent.ts

@@ -42,13 +42,46 @@ const GENERAL = [
 /** Asking for detail: the model answers these as before. */
 const DETAIL = /(?:^| )(?:in details?|detailed|detailliert\S*|ausführlich\S*|line by line|zeile für zeile|step by step|schritt für schritt|genau(?= erklär)|im detail|in depth|thoroughly|every line|jede zeile)(?= |$)/gu;
 
+/** What the current view is called: "die Hierarchie", "this view", "den Graphen" (H1). */
+const VIEW = 'hierarchie|hierarchy|ansicht|view|graph|graphen|graphs|ausschnitt|struktur|structure|darstellung|diagramm|diagram|scope|bild|picture|galaxy|galaxie|layout';
+const VIEW_ADJ = `${ADJ}|gezeigte|gezeigten|angezeigte|angezeigten|shown|displayed`;
+/** The view: "die aktuelle Hierarchie", "this graph", "den Ausschnitt hier", also of the selection ("von .github"). */
+const VIEW_OBJECT = `(?:(?:${DET}) )?(?:(?:${VIEW_ADJ}) )?(?:${VIEW})(?: (?:hier|here|da|there))?(?: (?:von|zu|für|of|for) <name>)?`;
+const VIEW_QUESTIONS = [
+    // German
+    String.raw`^(?:erklär|erkläre|erklären|erklärst|beschreib|beschreibe)(?: (?:mir|uns))?(?: bitte)?(?: mal)?(?: kurz)? ${VIEW_OBJECT}`,
+    String.raw`^(?:kannst|könntest) du (?:(?:mir|uns) )?(?:bitte )?(?:mal )?${VIEW_OBJECT}(?: (?:erklären|beschreiben|zeigen|zusammenfassen))?`,
+    String.raw`^was (?:zeigt|zeigen|bedeutet|bedeuten|ist|enthält) (?:(?:mir|uns) )?${VIEW_OBJECT}`,
+    String.raw`^was (?:sehe ich|sieht man|sehen wir|siehst du)(?: (?:hier|da|gerade|jetzt))*(?: (?:in|auf) ${VIEW_OBJECT})?`,
+    String.raw`^was (?:ist|wird) (?:(?:mir|uns) )?(?:hier|da) (?:zu sehen|dargestellt|gezeigt|angezeigt)`,
+    String.raw`^wie (?:lese|liest|lesen) (?:ich|man|wir) ${VIEW_OBJECT}`,
+    String.raw`^worum geht es (?:in|bei) ${VIEW_OBJECT}`,
+    // English
+    String.raw`^(?:explain|describe|summarize|summarise)(?: to me)? ${VIEW_OBJECT}`,
+    String.raw`^(?:can|could|would) you (?:please )?(?:explain|describe|summarize|summarise)(?: to me)? ${VIEW_OBJECT}`,
+    String.raw`^what (?:does|do) ${VIEW_OBJECT} (?:show|mean|display|contain|tell (?:me|us))`,
+    String.raw`^what (?:is|are) (?:shown|displayed|visible) (?:here|in ${VIEW_OBJECT})`,
+    String.raw`^what is ${VIEW_OBJECT}(?: (?:about|showing))?`,
+    String.raw`^what am i (?:looking at|seeing)(?: (?:here|now))?`,
+    String.raw`^what do (?:i|we) see(?: (?:here|now))?`,
+    String.raw`^how (?:do|should|can) (?:i|we) read ${VIEW_OBJECT}`,
+    String.raw`^tell (?:me|us) about ${VIEW_OBJECT}`,
+    // Only the view: "Hierarchie?"
+    String.raw`^${VIEW_OBJECT}`,
+].map(source => new RegExp(source + END, 'u'));
+
 /** Words a typo is corrected to, as K16 does for "wer ruf": "kansnt" is "kannst". */
 const VOCABULARY = ['kannst', 'könntest', 'sagen', 'macht', 'klasse', 'funktion', 'methode', 'datei', 'erklär', 'erkläre', 'erklären', 'beschreib', 'beschreibe',
     'diese', 'dieser', 'dieses', 'diesen', 'diesem', 'über', 'erzählen', 'explain', 'describe', 'summarize', 'about', 'tell', 'what', 'does', 'this', 'that',
     'code', 'class', 'function', 'method', 'file', 'symbol', 'modul', 'module', 'zusammen', 'bedeutet', 'enthält', 'contain'];
+/** The view as it is mistyped: "heirarchie", "heirachie", "hierachy", "ansciht" (H1). Long words take two typos, as names do. */
+const VIEW_VOCABULARY = ['hierarchie', 'hierarchy', 'ansicht', 'ausschnitt', 'struktur', 'structure', 'graphen', 'darstellung', 'diagramm'];
+/** Real words a typo away from a view word; they are never "corrected" into one. */
+const NOT_VIEW = ['absicht', 'einsicht', 'aussicht', 'gruppen'];
 /** Words of the patterns themselves: never "corrected" into another one ("dies" is no "does"). */
-const OWN = new Set([...[DET, ADJ, KIND, PRONOUN, TAIL].flatMap(list => list.split('|')), ...VOCABULARY, 'was', 'wass', 'tut', 'ist', 'kann', 'man', 'dazu', 'darüber',
-    'steht', 'passiert', 'worum', 'geht', 'bei', 'can', 'could', 'you', 'more', 'do', 'is', 'to', 'how', 'why', 'with', 'from', 'calls', 'call', 'used', 'uses']);
+const OWN = new Set([...[DET, ADJ, KIND, PRONOUN, TAIL, VIEW, VIEW_ADJ].flatMap(list => list.split('|')), ...VOCABULARY, ...NOT_VIEW, 'was', 'wass', 'tut', 'ist', 'kann', 'man', 'dazu', 'darüber',
+    'steht', 'passiert', 'worum', 'geht', 'bei', 'can', 'could', 'you', 'more', 'do', 'is', 'to', 'how', 'why', 'with', 'from', 'calls', 'call', 'used', 'uses',
+    'zeigt', 'zeigen', 'sehe', 'sieht', 'sehen', 'siehst', 'lese', 'liest', 'lesen', 'show', 'shows', 'read', 'see', 'looking', 'seeing', 'visible']);
 const SPELLED = { erklaer: 'erklär', erklaere: 'erkläre', erklaeren: 'erklären', ueber: 'über', fuer: 'für', ausfuehrlich: 'ausführlich', koenntest: 'könntest', enthaelt: 'enthält' } as Record<string, string>;
 
 /** The prompt in lower case, words corrected, the selection's name as `<name>`. */
@@ -62,7 +95,8 @@ function normalize(prompt: string, names: readonly string[]): string {
         if (OWN.has(spelled)) return spelled;
         if (own.some(name => name.length >= 4 && withinEdits(word, name, typoBudget(name)))) return '<name>';
         if (spelled.length < 4) return spelled;
-        return VOCABULARY.find(candidate => withinEdits(spelled, candidate, 1)) ?? spelled;
+        return VOCABULARY.find(candidate => withinEdits(spelled, candidate, 1))
+            ?? VIEW_VOCABULARY.find(candidate => withinEdits(spelled, candidate, candidate.length >= 9 ? 2 : 1)) ?? spelled;
     }).join(' ');
 }
 
@@ -76,6 +110,17 @@ export function generalQuestion(prompt: string, names: readonly string[]): 'gene
     return detail ? 'detail' : 'general';
 }
 
+/** "general" for a short question about the current view ("erkläre die aktuelle Hierarchie",
+ * "what am I looking at"), "detail" for the same asking for detail, undefined otherwise (H1).
+ * `names` are the selection's: "die Hierarchie von .github" is the view too. */
+export function viewQuestion(prompt: string, names: readonly string[]): 'general' | 'detail' | undefined {
+    const text = normalize(prompt, names);
+    const detail = new RegExp(DETAIL.source, 'u').test(text);
+    const asked = detail ? text.replace(DETAIL, ' ').replace(/\s+/g, ' ').trim() : text;
+    if (!VIEW_QUESTIONS.some(pattern => pattern.test(asked))) return undefined;
+    return detail ? 'detail' : 'general';
+}
+
 /** Greetings and probes: a prompt of only these asks nothing. */
 const GREETINGS = new Set(['hi', 'hey', 'hello', 'hallo', 'moin', 'servus', 'huhu', 'yo', 'test', 'testing', 'tests', 'ok', 'okay', 'danke', 'thanks', 'thank', 'you',
     'du', 'ja', 'nein', 'yes', 'no', 'guten', 'morgen', 'tag', 'abend', 'good', 'morning', 'evening', 'there', 'bitte', 'please', 'na', 'hm', 'hmm', 'ping', 'asdf']);

graph-ui/src/browser-ai/strings.ts

@@ -574,3 +574,43 @@ export const chatRound3Text: { en: typeof englishRound3Text; de: typeof englishR
         },
     },
 };
+
+type ViewDirection = 'both' | 'inbound' | 'outbound';
+/** The listed answer to a question about the current Galaxy view (H1), and the note for a model
+ * answer that only restated its question (H2), in the language of the question. */
+const englishViewText = {
+    center: (name: string, kind: string, roots: number) => `${name} (${kind}) is in the middle${roots > 1 ? ` with ${en(roots)} symbols` : ''}`,
+    reach: (hops: string, direction: string, both: boolean) => `the scope reaches ${hops}${both ? ' ' : ', '}${direction}`,
+    selectionOnly: 'the scope shows the selection only',
+    /** The heading of a side; the hierarchy draws incoming on the left and outgoing on the right. */
+    side: (side: 'incoming' | 'outgoing', hierarchy: boolean): string => side === 'incoming' ? hierarchy ? 'Left, incoming:' : 'Incoming:' : hierarchy ? 'Right, outgoing:' : 'Outgoing:',
+    /** How the hierarchy is read, as its hint says it: from two layers on each column is one layer further,
+     * and nodes reached through both directions stand in the dashed band below. */
+    readHierarchy: (direction: ViewDirection, columns: boolean) => direction === 'both'
+        ? `How to read the hierarchy: incoming relationships stand on the left, outgoing on the right${columns ? ', each column one layer further in the same direction' : ''}.`
+            + (columns ? ' Nodes reached through both directions, such as a callee of a caller, stand in the dashed band "Mixed directions" below.' : '')
+        : `How to read the hierarchy: the scope follows ${direction === 'inbound' ? 'incoming' : 'outgoing'} relationships only, so everything stands on the ${direction === 'inbound' ? 'left' : 'right'} of the middle${columns ? ', each column one layer further' : ''}.`,
+    readGalaxy: 'The galaxy view shows this scope as a cloud. "hierarchy" at the top right lays the same scope out in columns: incoming on the left, outgoing on the right.',
+    size: (size: string, types: string, state: string) => `${size}, ${types}; ${state}.`,
+    noAnswer: (echoed: string) => `The model gave no answer; it only restated the question ("${echoed}").`,
+    factsFollow: 'This is what the indexed graph lists for the selection:',
+    rephrase: 'Ask the question in other words, or ask again.',
+};
+export const viewText: { en: typeof englishViewText; de: typeof englishViewText } = {
+    en: englishViewText,
+    de: {
+        center: (name: string, kind: string, roots: number) => `${name} (${kind}) steht${roots > 1 ? ` mit ${de(roots)} Symbolen` : ''} in der Mitte`,
+        reach: (hops: string, direction: string, both: boolean) => `der Ausschnitt geht ${hops}${both ? ' ' : ', '}${direction}`,
+        selectionOnly: 'der Ausschnitt zeigt nur die Auswahl',
+        side: (side: 'incoming' | 'outgoing', hierarchy: boolean) => side === 'incoming' ? hierarchy ? 'Links, eingehend:' : 'Eingehend:' : hierarchy ? 'Rechts, ausgehend:' : 'Ausgehend:',
+        readHierarchy: (direction: ViewDirection, columns: boolean) => direction === 'both'
+            ? `So liest du die Hierarchie: eingehende Beziehungen stehen links, ausgehende rechts${columns ? ', jede Spalte eine Ebene weiter in derselben Richtung' : ''}.`
+                + (columns ? ' Was über beide Richtungen erreicht wird, etwa etwas, das ein Aufrufer sonst noch aufruft, steht im gestrichelten Band „Mixed directions“ darunter.' : '')
+            : `So liest du die Hierarchie: der Ausschnitt folgt nur ${direction === 'inbound' ? 'eingehenden' : 'ausgehenden'} Beziehungen, daher steht alles ${direction === 'inbound' ? 'links' : 'rechts'} der Mitte${columns ? ', jede Spalte eine Ebene weiter' : ''}.`,
+        readGalaxy: 'Die Galaxy-Ansicht zeigt diesen Ausschnitt als Wolke. „hierarchy“ oben rechts ordnet denselben Ausschnitt in Spalten: eingehend links, ausgehend rechts.',
+        size: (size: string, types: string, state: string) => `${size}, ${types}; ${state}.`,
+        noAnswer: (echoed: string) => `Das Modell hat keine Antwort gegeben, es hat nur die Frage wiederholt („${echoed}“).`,
+        factsFollow: 'Das listet der indizierte Graph zur Auswahl:',
+        rephrase: 'Stell die Frage mit anderen Worten oder frag erneut.',
+    },
+};

graph-ui/src/browser-ai/view-answer.test.ts

@@ -0,0 +1,90 @@
+import { describe, expect, it } from 'vitest';
+import { generalQuestion, viewQuestion } from './question-intent';
+import { readGalaxyEvidence } from './galaxy-evidence';
+import { githubFolderEvidence } from './galaxy-evidence.fixture';
+import { viewAnswer } from './view-answer';
+import type { GraphEdge, GraphNode } from '../galaxy/types';
+
+const names = ['.github', 'django-demo..github'];
+
+/** With .github selected in the hierarchy, "kkannst du mir die heirarchie erklären" and "erkläre die
+ * aktuelle hierarchy" went to the free model, which only restated them (hand test of 2026-10-04, H1). */
+describe('questions about the current view (H1)', () => {
+    it.each([
+        'kkannst du mir die heirarchie erklären', 'erkläre die aktuelle hierarchy', 'erkläre die aktuelle ansicht', 'was zeigt mir diese ansicht', 'kannst du mir den graphen erklären',
+        'Erklär mir den Ausschnitt', 'beschreibe die Struktur', 'was sehe ich hier?', 'Was sehe ich hier eigentlich?', 'Was zeigt der Graph?', 'Wie lese ich diese Hierarchie?',
+        'erkläre die hierarchie von .github', 'Hierarchie?', 'explain the hierarchy', 'what does this view show', 'Explain this graph', 'What am I looking at?',
+        'can you explain this view?', 'what is this view?', 'How do I read this hierarchy?', 'describe the structure please', 'explain the current scope', 'erklär mir die heirachie bitte',
+    ])('reads %s as a question about the current view', prompt => {
+        expect(viewQuestion(prompt, names)).toBe('general');
+    });
+
+    it.each(['erkläre die hierarchie ausführlich', 'explain this view in detail', 'Erklär den Graphen Schritt für Schritt'])('reads %s as one that asks the model for detail', prompt => {
+        expect(viewQuestion(prompt, names)).toBe('detail');
+    });
+
+    it.each([
+        'erklär mir das', 'was macht diese klasse?', 'Who calls JSONBAgg?', 'warum ist die hierarchie so aufgebaut?', 'erkläre die Struktur von Aggregate', 'test', 'Hat diese Klasse Luft?',
+        'explain the hierarchy of Aggregate', 'Wie viele Dateien enthält .github?', 'what does this class do?', 'erkläre die absicht',
+    ])('leaves %s to the other answers', prompt => {
+        expect(viewQuestion(prompt, names)).toBeUndefined();
+    });
+
+    it('still reads a general question about the selection as one', () => {
+        expect(generalQuestion('erklär mir das', names)).toBe('general');
+        expect(generalQuestion('kannst du mir das erklären', names)).toBe('general');
+    });
+});
+
+const evidence = (display?: 'galaxy' | 'hierarchy', overrides?: Parameters<typeof githubFolderEvidence>[1]) => readGalaxyEvidence(githubFolderEvidence(display, overrides).text)!;
+
+describe('the listed answer about the current view (H1)', () => {
+    it('says what is in the middle, what comes in on the left and what goes out on the right, in German', () => {
+        const answer = viewAnswer(evidence('hierarchy'), 'de');
+        expect(answer.split('\n\n')).toEqual([
+            '`.github` (Ordner) steht in der Mitte; der Ausschnitt geht 1 Schritt in beide Richtungen.',
+            'Links, eingehend:\n- **CONTAINS_FOLDER (1):** `DETACHED`',
+            'Rechts, ausgehend:\n- **CONTAINS_FILE (4):** `CODE_OF_CONDUCT.md`, `FUNDING.yml`, `pull_request_template.md`, `SECURITY.md`\n- **CONTAINS_FOLDER (1):** `workflows`',
+            'So liest du die Hierarchie: eingehende Beziehungen stehen links, ausgehende rechts.',
+            '7 Symbole und 6 Beziehungen, alle Beziehungstypen; vollständig geladen.',
+            '_Aus dem indizierten Graphen gelistet, nicht vom Modell erzeugt._',
+        ]);
+    });
+
+    it('says the galaxy view shows the same scope as a cloud, without left and right, in English', () => {
+        const answer = viewAnswer(evidence('galaxy'), 'en');
+        expect(answer.split('\n\n')).toEqual([
+            '`.github` (Folder) is in the middle; the scope reaches 1 hop in both directions.',
+            'Incoming:\n- **CONTAINS_FOLDER (1):** `DETACHED`',
+            'Outgoing:\n- **CONTAINS_FILE (4):** `CODE_OF_CONDUCT.md`, `FUNDING.yml`, `pull_request_template.md`, `SECURITY.md`\n- **CONTAINS_FOLDER (1):** `workflows`',
+            'The galaxy view shows this scope as a cloud. "hierarchy" at the top right lays the same scope out in columns: incoming on the left, outgoing on the right.',
+            '7 symbols and 6 relationships, all relationship types; fully loaded.',
+            '_Listed from the indexed graph; not generated by the model._',
+        ]);
+    });
+
+    it('bounds long name lists with "+N more" and names the dashed band from two layers on', () => {
+        const extra: GraphNode[] = Array.from({ length: 12 }, (_, index) => ({ id: 100 + index, name: `doc_${String(index).padStart(2, '0')}.md`, label: 'File', file_path: `.github/doc_${String(index).padStart(2, '0')}.md`,
+            x: 0, y: 0, z: 0, size: 1, color: '#999' }));
+        const edges: GraphEdge[] = extra.map(node => ({ source: 1, target: node.id, type: 'CONTAINS_FILE' }));
+        const answer = viewAnswer(evidence('hierarchy', { depth: 2, nodes: extra, edges }), 'de');
+        expect(answer).toContain('- **CONTAINS_FILE (16):** `CODE_OF_CONDUCT.md`, `doc_00.md`, `doc_01.md`, `doc_02.md`, `doc_03.md`, `doc_04.md`, `doc_05.md`, `doc_06.md`; +8 weitere');
+        expect(answer).toContain('der Ausschnitt geht 2 Schritte in beide Richtungen.');
+        expect(answer).toContain('So liest du die Hierarchie: eingehende Beziehungen stehen links, ausgehende rechts, jede Spalte eine Ebene weiter in derselben Richtung. '
+            + 'Was über beide Richtungen erreicht wird, etwa etwas, das ein Aufrufer sonst noch aufruft, steht im gestrichelten Band „Mixed directions“ darunter.');
+    });
+
+    it('reads a hierarchy that follows one direction only, and names the side that is not loaded', () => {
+        const answer = viewAnswer(evidence('hierarchy', { direction: 'outbound' }), 'en');
+        expect(answer).toContain('the scope reaches 1 hop, outgoing only.');
+        expect(answer).toContain('Incoming: not loaded; the scope does not follow incoming edges.');
+        expect(answer).toContain('How to read the hierarchy: the scope follows outgoing relationships only, so everything stands on the right of the middle.');
+        expect(answer).not.toContain('dashed band');
+    });
+
+    it('says nothing about left, right or a cloud when the evidence does not say which view is shown', () => {
+        const answer = viewAnswer(evidence(), 'en');
+        expect(answer).toContain('Incoming:\n- **CONTAINS_FOLDER (1):** `DETACHED`');
+        expect(answer).not.toMatch(/left|right|cloud/);
+    });
+});

graph-ui/src/browser-ai/view-answer.ts

@@ -0,0 +1,55 @@
+import type { RelationshipGroup } from '../galaxy/selection-evidence';
+import { scopeParts, sideLoaded, type GalaxyEvidence } from './galaxy-evidence';
+import { relationshipWords, viewText, type RelationshipWords } from './strings';
+
+/** The answer to a question about the current Galaxy view, listed from the loaded scope (H1).
+ *
+ * "kkannst du mir die heirarchie erklären" with .github in the hierarchy went to the free
+ * model, which answered "Ich kann dir die Heirarchy erklären.". The scope holds the answer:
+ * what is in the middle, what comes in (left in the hierarchy) and what goes out (right),
+ * each relationship type with its count and names, how far the scope reaches, and how the
+ * picture is read. Names are bounded per type and the rest counted, as in the listed answers. */
+
+const NAMES_PER_TYPE = 8;
+const TYPES_PER_SIDE = 6;
+const quote = (value: string) => `\`${value.replace(/`/g, "'")}\``;
+
+/** "- **CONTAINS_FILE (4):** `CODE_OF_CONDUCT.md`, `FUNDING.yml`; +2 more". */
+function typeLine(group: RelationshipGroup, words: RelationshipWords): string {
+    const shown = group.files.flatMap(file => file.symbols.map(symbol => symbol.name)).slice(0, NAMES_PER_TYPE);
+    const rest = group.count - shown.length;
+    const names = shown.length ? `${shown.map(quote).join(', ')}${rest > 0 ? `; ${words.more(rest)}` : ''}` : words.more(group.count);
+    return `- **${words.typeCount(group.type, group.count)}:** ${names}`;
+}
+const totals = (items: readonly { type: string; count: number }[]) => items.slice(0, TYPES_PER_SIDE).map(item => `${item.type} ${item.count}`).join(', ');
+
+export function viewAnswer(evidence: GalaxyEvidence, language: 'en' | 'de'): string {
+    const words = relationshipWords[language], text = viewText[language];
+    const hierarchy = evidence.display === 'hierarchy';
+    const [first] = evidence.roots;
+    const single = evidence.rootCount <= 1 && first !== undefined;
+    const center = text.center(quote(single ? first.name : evidence.label), words.kindName((single ? first.kind : undefined) ?? evidence.selectionKind), single ? 1 : evidence.rootCount);
+    const { direction, types, state } = scopeParts(evidence, words);
+    const reach = evidence.depth === 0 ? text.selectionOnly : text.reach(words.hops(evidence.depth), direction, evidence.direction === 'both');
+    const side = (name: 'incoming' | 'outgoing'): string => {
+        if (!sideLoaded(evidence, name)) return name === 'incoming' ? words.incomingNotLoaded : words.outgoingNotLoaded;
+        const groups = evidence.relationships[name];
+        if (!groups.length) return evidence.truncated ? words.cut(name) : name === 'incoming' ? words.noIncoming : words.noOutgoing;
+        const lines = groups.slice(0, TYPES_PER_SIDE).map(group => typeLine(group, words));
+        if (groups.length > TYPES_PER_SIDE) lines.push(`- ${words.moreTypes(groups.length - TYPES_PER_SIDE)}`);
+        return `${text.side(name, hierarchy)}\n${lines.join('\n')}`;
+    };
+    const { internal, beyond } = evidence.relationships;
+    // The picture is read in the view the reader has; where the evidence does not say which, nothing is said about it.
+    const reading = evidence.display === 'hierarchy' ? text.readHierarchy(evidence.direction, evidence.depth >= 2) : evidence.display === 'galaxy' ? text.readGalaxy : undefined;
+    return [
+        `${center}; ${reach}.`,
+        ...evidence.depth === 0 ? [words.notExpanded] : [side('incoming'), side('outgoing')],
+        ...internal.length ? [words.internal(totals(internal))] : [],
+        ...beyond.length ? [words.beyond(totals(beyond))] : [],
+        ...reading ? [reading] : [],
+        text.size(words.size(evidence.nodes, evidence.edges), types, state),
+        ...evidence.state === 'loading' ? [words.stillLoading] : [],
+        `_${words.listedFromGraph}_`,
+    ].join('\n\n');
+}

graph-ui/src/galaxy/GalaxyPanel.chat-display.test.tsx

@@ -0,0 +1,58 @@
+// @vitest-environment jsdom
+/*
+ * Hand test of 2026-10-04 (H1): the chat answers "erkläre die aktuelle hierarchy" from
+ * the loaded scope, and to say how to read the picture it has to know which picture
+ * Galaxy shows. The evidence carries it; switching the picture is no new selection,
+ * so the explanation of the scope is not written again.
+ */
+import { act } from 'react';
+import { createRoot, type Root } from 'react-dom/client';
+import { afterEach, beforeEach, expect, it, vi } from 'vitest';
+import GalaxyPanel from './GalaxyPanel';
+import { scopeFetch, scopeNode } from './test-scope-fetch';
+import type { GraphEdge } from './types';
+
+vi.mock('./GraphScene', async importOriginal => ({
+    ...await importOriginal<typeof import('./GraphScene')>(),
+    GraphScene: () => <output data-testid="scene" />,
+}));
+
+let host: HTMLDivElement, root: Root;
+beforeEach(() => {
+    (globalThis as unknown as Record<string, unknown>).IS_REACT_ACT_ENVIRONMENT = true;
+    host = document.createElement('div'); document.body.append(host); root = createRoot(host);
+});
+afterEach(async () => {
+    await act(async () => root.unmount()); host.remove(); globalThis.__atlasGalaxy = undefined;
+    window.localStorage.clear();
+});
+
+const seam = () => globalThis.__atlasGalaxy!;
+const settle = (check: () => void) => vi.waitFor(async () => {
+    await act(async () => { await new Promise(resolve => setTimeout(resolve, 0)); });
+    check();
+});
+const status = () => host.querySelector('.atlas-graph-scope-count');
+
+it('H1: tells the chat whether Galaxy shows the cloud or the hierarchy, with the same content identity', async () => {
+    const nodes = [1, 2, 3].map(id => scopeNode(id));
+    const edges: GraphEdge[] = [{ id: 1, source: 1, target: 2, type: 'CALLS' }, { id: 2, source: 3, target: 1, type: 'CALLS' }];
+    const onSelectionEvidence = vi.fn();
+    await act(async () => root.render(<GalaxyPanel project="sample" visible workspaceExpanded onOpenNode={vi.fn()} onSelectionEvidence={onSelectionEvidence}
+        fetch={scopeFetch({ nodes, edges }).fetch} />));
+    await settle(() => expect(seam().nodes).toBe(3));
+    await act(async () => { seam().clickNode('sample.n1'); });
+    await settle(() => expect(status()?.textContent).toBe('3 nodes · 2 edges'));
+    const last = () => onSelectionEvidence.mock.lastCall![0] as { id: string; text: string };
+    const display = () => JSON.parse(last().text).evidence.scope.display;
+    await settle(() => expect(display()).toBe('galaxy'));
+    const { id } = last();
+    await act(async () => host.querySelector<HTMLButtonElement>('button.atlas-graph-mode-chip[data-mode="hierarchy"]')!.click());
+    expect(seam().mode).toBe('hierarchy');
+    await settle(() => expect(display()).toBe('hierarchy'));
+    // The same scope in another picture: the chat keeps its explanation.
+    expect(last().id).toBe(id);
+    await act(async () => host.querySelector<HTMLButtonElement>('button.atlas-graph-mode-chip[data-mode="galaxy"]')!.click());
+    await settle(() => expect(display()).toBe('galaxy'));
+    expect(last().id).toBe(id);
+});

graph-ui/src/galaxy/GalaxyPanel.tsx

@@ -1213,8 +1213,10 @@ export default function GalaxyPanel(props: GalaxyPanelProps): JSX.Element {
         state: scope.complete ? scope.result?.partial ? 'render-limit-partial' : 'complete-indexed-scope' : scope.loading ? 'loading-partial-preview' : 'partial',
         error: scope.error, exhausted: scope.result?.exhausted,
         ...scope.complete && scope.result?.partial ? { renderLimit: { layer: scope.result.partial.layer, kind: scope.result.partial.limit,
-            limit: scope.result.partial.limit === 'nodes' ? nodeBudget : edgeBudget } } : {} }) : undefined,
-    [project, scope.scope, scope.result, scope.depth, scope.direction, scope.complete, scope.loading, scope.error, traceTypes, props.workspaceExpanded, nodeBudget, edgeBudget]);
+            limit: scope.result.partial.limit === 'nodes' ? nodeBudget : edgeBudget } } : {},
+        // Which picture is shown, so the chat can say how to read it (H1).
+        display: mode }) : undefined,
+    [project, scope.scope, scope.result, scope.depth, scope.direction, scope.complete, scope.loading, scope.error, traceTypes, props.workspaceExpanded, nodeBudget, edgeBudget, mode]);
     useSelectionEvidence(props.onSelectionEvidence, agentEvidence, visible && props.workspaceExpanded === true);
     const toggleKind = useCallback((type: string) => {
         if (props.workspaceExpanded && scope.scope) {

graph-ui/src/galaxy/selection-evidence.ts

@@ -123,6 +123,8 @@ export interface GalaxyScope {
     exhausted?: boolean;
     /** The layer that stopped and the limit it stopped at. */
     renderLimit?: { layer: number; kind: 'nodes' | 'edges'; limit: number };
+    /** Which picture of the scope Galaxy shows, so the chat can say how to read it (H1). */
+    display?: 'galaxy' | 'hierarchy';
 }
 
 /** Every scope edge is classified against the roots first; only the names are
@@ -134,7 +136,8 @@ export function galaxyScopeEvidence(scope: GalaxyScope): SelectionEvidence {
     return { project: scope.project, view: 'galaxy', source: 'query_graph scoped indexed relationships', label: scopeDisplayName(scope.identity),
         selected: { scope: scope.identity, rootCount: roots.length, roots: roots.slice(0, ROOTS_LISTED).map(root => ({ ...graphNodeEvidence(root),
             documentation: root.documentation?.slice(0, ROOT_DOCUMENTATION_CHARACTERS) })), omittedRoots: Math.max(0, roots.length - ROOTS_LISTED) },
-        scope: { depth: scope.depth, direction: scope.direction, edgeTypes: scope.edgeTypes, nodes: scope.nodes.length, edges: scope.edges.length },
+        scope: { depth: scope.depth, direction: scope.direction, edgeTypes: scope.edgeTypes, nodes: scope.nodes.length, edges: scope.edges.length,
+            ...scope.display ? { display: scope.display } : {} },
         relationships: scopeRelationships(scope.nodes, scope.edges, scope.roots),
         limitations: { state: scope.state, error: scope.error, exhausted: scope.exhausted, ...scope.renderLimit ? { renderLimit: scope.renderLimit } : {}, indexCoverage: 'unavailable',
             interpretation: 'Static indexed relationships, not runtime activity. Scope completeness is relative to the indexed graph and selected depth/types.' } };
@@ -215,9 +218,12 @@ export function selectionEvidenceContext(original: SelectionEvidence): BrowserCh
     const snapshot = copy(architecture ? { ...head, relationships: evidence.relationships, selected: evidence.selected }
         : { ...head, selected: evidence.selected, relationships: evidence.relationships }, '$', 0);
     const text = JSON.stringify({ evidence: snapshot, omissions });
+    // The picture Galaxy draws a scope in is no code fact: in either one the scope keeps its identity (H1).
+    const scope = row(row(snapshot)?.scope);
+    const identity = scope?.display === undefined ? text : JSON.stringify({ evidence: { ...row(snapshot), scope: { ...scope, display: undefined } }, omissions });
     let hash = 2166136261;
-    for (let i = 0; i < text.length; i++) hash = Math.imul(hash ^ text.charCodeAt(i), 16777619);
-    return { id: `selection:${evidence.project}:${evidence.view}:${(hash >>> 0).toString(16)}:${text.length}`,
+    for (let i = 0; i < identity.length; i++) hash = Math.imul(hash ^ identity.charCodeAt(i), 16777619);
+    return { id: `selection:${evidence.project}:${evidence.view}:${(hash >>> 0).toString(16)}:${identity.length}`,
         label: evidence.label.slice(0, 120), text };
 }