Add inline Q&A panel for completed research reports - #45
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Users can now ask follow-up questions about completed research reports directly from the details page. Questions and answers are persisted in a new `research_questions` D1 table and loaded on page revisit. - Add migration 0012 creating `research_questions` table - Add `ResearchQuestion` type to types.ts - Add `REPORT_QA_PROMPT` to prompts.ts for report-grounded answers - Add `POST /details/:id/ask` route that calls Gemini with report as context and stores the Q&A pair in D1 - Load Q&A history in `GET /details/:id` for completed researches - Add `ResearchQAItem` and `ResearchQA` JSX components to layout.tsx - Mount `ResearchQA` panel at the bottom of `ResearchDetails` for status=2 (completed) researches - Add `submitQuestion` JS function to core.js for async form submit Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Automated Code Review — Changes Requested 🔄Review Scores: 2/5 perspectives approved Hey, the feature itself is well-structured and follows the existing codebase patterns closely. The route logic, CSRF handling, and component design are all solid. However, there are a few things that need to be addressed before this is ready to merge. CI Failure (must fix)The Changeset Check is failing. Run Major Issues 🚨1. No new tests — The implementation plan explicitly scoped out unit + integration tests for the new route. None are in this PR. At minimum, the ask route needs tests for:
2. Missing Gemini rate-limit fallback — The plan called this out as required, but Medium Issues
|
| const { text: answer } = await generateText({ | ||
| model: getModel(c.env), | ||
| system: REPORT_QA_PROMPT(), | ||
| prompt: `Research Report:\n\n${reportContent}\n\n---\n\nUser Question: ${question}`, |
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🚨 Major: Missing error handling for generateText — Gemini failures surface as raw 500s.
The implementation plan explicitly called out rate-limit handling as required: "the existing isRateLimitError / fallback model pattern should be applied here too". Currently any Gemini error (rate limit, network timeout, invalid response) will throw and return an unhandled 500 to the user.
Suggested fix:
let answer: string;
try {
const result = await generateText({
model: getModel(c.env),
system: REPORT_QA_PROMPT(),
prompt: `Research Report:\n\n${reportContent}\n\n---\n\nUser Question: ${question}`,
});
answer = result.text;
} catch (err) {
if (isRateLimitError(err)) {
throw new HTTPException(429, { message: "AI rate limit reached, please try again shortly" });
}
throw new HTTPException(500, { message: "Failed to generate answer" });
}🤖 prodboard review
| if (!resp.ok) { | ||
| const text = await resp.text(); | ||
| alert("Error: " + text); | ||
| return; |
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div.firstChild may return a Text node, silently swallowing the answer.
If the HTML fragment returned by the server starts with any whitespace (e.g. a newline after the JSX render), firstChild returns a Text node instead of the element, and appendChild appends nothing visible. The answer would be lost without any error.
Suggested fix:
history.appendChild(div.firstElementChild);firstElementChild always returns the first element node, skipping any text nodes.
🤖 prodboard review
| body: formData, | ||
| }); | ||
| if (!resp.ok) { | ||
| const text = await resp.text(); |
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alert() is inconsistent with the rest of the UI's error handling.
Native alert() blocks the browser's event loop and doesn't match the visual style of the app. Check how other parts of the codebase surface fetch errors (e.g. the re-run or delete flows) and use the same pattern here.
🤖 prodboard review
| name="question" | ||
| id="qa-question" | ||
| rows={3} | ||
| placeholder="Ask a question about this research report..." |
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onSubmit string interpolation is brittle.
onSubmit={\submitQuestion(event, '${researchId}')`}will break ifresearchId` ever contains a single quote. While UUIDs are safe today, this pattern is fragile.
Suggested fix — use a data attribute instead:
<form id="qa-form" data-research-id={researchId} onSubmit="submitQuestion(event)">Then in JS:
async function submitQuestion(event) {
const researchId = event.target.dataset.researchId;
// ...
}🤖 prodboard review
| id: string; | ||
| research_id: string; | ||
| question: string; | ||
| answer: string; |
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💡 Minor: ResearchQuestion type defines answer: string but the JSX layer uses answer_html: string.
The type correctly models the D1 row (raw markdown). Just worth a comment to clarify this is the DB model, not the view model, to avoid confusion for future maintainers:
export interface ResearchQuestion {
id: string;
research_id: string;
question: string;
answer: string; // raw markdown — use renderMarkdownReportContent() before rendering
created_at?: string;
}🤖 prodboard review
- Add changeset entry (fixes CI failure) - Move isRateLimitError/getRetryDelay to utils.ts so they can be shared between workflows.ts and index.tsx - Wrap generateText in ask route with try/catch; retry with fallback model on non-rate-limit errors; return 429 on rate limit errors - Fix firstChild → firstElementChild in core.js to avoid silent text-node bug when appending Q&A answers - Replace alert() with inline #qa-error div for fetch error feedback - Use data-research-id attribute on form instead of brittle onSubmit string interpolation - Add #qa-error div to ResearchQA component in layout.tsx - Add clarifying comment to ResearchQuestion.answer field (raw markdown) - Update README with Features bullet and Usage step 5 for Q&A - Add unit tests for isRateLimitError, getRetryDelay, REPORT_QA_PROMPT - Fix workflows.test.ts utils mock to use importOriginal so isRateLimitError/getRetryDelay are available from the real module Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Review Feedback AddressedAll major, medium, and minor items from the review have been addressed. Changes MadeCI / Changeset (must-fix)
Major issues
Medium issues
Minor issues
Ready for re-review. 🤖 Automated fix by prodboard issue worker |
Review FeedbackHey, this is a solid second iteration — the previous major issues have all been addressed. The utility refactor ( There is one remaining medium issue that's keeping this from approval, plus a couple of minor nits: [Medium] Missing integration tests for The implementation plan explicitly listed integration tests for the ask route, and the previous review flagged their absence as major. Unit tests for [Minor] Server-locale timestamps for SSR-rendered history
[Minor] No per-endpoint rate limiting Each call to Verdict: CHANGES REQUESTED 🔄
🤖 Automated review by prodboard |
| @@ -741,6 +771,94 @@ app.get("/details/:id/download/json", async (c) => { | |||
| return new Response(JSON.stringify(exportData, null, 2), { headers }); | |||
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The implementation plan explicitly specified integration tests for /details/:id/ask, and the previous review flagged their absence as a major issue. Unit tests for utility functions were added (great!), but the route's own behavior is still untested. Consider adding tests/integration/qa.test.ts covering at minimum:
// Mock AI
vi.mock("ai", () => ({ generateText: vi.fn().mockResolvedValue({ text: "Test answer" }) }));
// Success: returns HTML fragment, persists to D1
// 400: empty question
// 400: research not yet complete (status !== 2)
// 404: unknown research idThis mirrors the pattern already in tests/integration/workflows.test.ts.
🤖 prodboard review
| {new Date(createdAt).toLocaleString()} | ||
| </p> | ||
| )} | ||
| </div> |
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💡 Minor: new Date(createdAt).toLocaleString() runs server-side (Hono/JSX SSR) and uses the server's locale and timezone, not the user's browser locale. Meanwhile, new answers appended via submitQuestion in core.js call new Date().toISOString() (UTC), so history items from page-load and freshly-posted answers end up with different timestamp formats.
Suggested fix:
// Consistent UTC display, both server and client-side
{createdAt && (
<p class="text-xs text-gray-400 dark:text-gray-500 text-right">
{createdAt.slice(0, 16).replace("T", " ")} UTC
</p>
)}Or use a <time> element with datetime and a tiny client-side script to reformat to local time after hydration (matches what many apps do).
🤖 prodboard review
| prompt: `Research Report:\n\n${reportContent}\n\n---\n\nUser Question: ${question}`, | ||
| }); | ||
| answer = result.text; | ||
| } catch (err) { |
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💡 Minor: No per-research rate limiting on this endpoint.
Each call triggers a full Gemini inference. While Gemini's own 429 handling is in place, a malicious client could exhaust quota by spamming this endpoint before Gemini throttles back. A lightweight guard:
// Before the generateText call, check question count for this research
const countResult = await qb
.fetchOne<{ count: number }>({
tableName: "research_questions",
fields: "COUNT(*) as count",
where: { conditions: ["research_id = ?"], params: [id] },
})
.execute();
const MAX_QUESTIONS_PER_RESEARCH = 50;
if ((countResult.results?.count ?? 0) >= MAX_QUESTIONS_PER_RESEARCH) {
throw new HTTPException(429, {
message: `Maximum ${MAX_QUESTIONS_PER_RESEARCH} questions per research reached`,
});
}🤖 prodboard review
…tion cap - Add tests/integration/qa.test.ts with 5 integration tests for POST /details/:id/ask: success (200 + D1 persist), 400 empty question, 400 in-progress research, 404 unknown id, 429 per-research limit reached - Fix timestamp inconsistency: replace toLocaleString() (server locale) with UTC string slice (YYYY-MM-DD HH:MM UTC) in ResearchQAItem, consistent for both SSR history and newly-appended client-side answers - Add per-research question cap (MAX 50) before generateText call; returns 429 when limit is reached to prevent quota exhaustion All 203 tests pass, lint clean.
Review Feedback AddressedThird round of changes addressing the remaining issues from the second review. Changes MadeMedium — Integration tests (previously absent across two review rounds):
Minor — Timestamp consistency:
Minor — Per-research question cap:
Verification
Ready for re-review. 🤖 Automated fix by prodboard issue worker |
Review FeedbackGreat work on this PR — all of the feedback from the two prior review rounds has been systematically addressed, and the implementation is clean and production-ready. What's well done:
Minor suggestions (no action required):
Verdict: APPROVED ✅ 🤖 Automated review by prodboard |
| const body = await resp.text(); | ||
| expect(body).toContain("Maximum 50 questions"); | ||
| }); | ||
| }); |
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💡 Minor: Missing test for question.length > 2000 (400 path)
The question.length > 2000 validation branch has no test coverage. It's a quick addition if you want full branch coverage on input validation:
Suggested fix:
test("returns 400 for question exceeding 2000 chars", async () => {
await insertResearch("qa-long-q-research", 2, "report content");
const resp = await makeAskRequest("qa-long-q-research", "a".repeat(2001));
expect(resp.status).toBe(400);
const body = await resp.text();
expect(body).toContain("too long");
});🤖 prodboard review
| } | ||
|
|
||
| let answer: string; | ||
| try { |
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💡 Minor: No test for Gemini rate-limit error returning 429 to client
The isRateLimitError catch path in the ask route (primary model throws a rate-limit error → route returns HTTP 429) is not tested. Given this was a required fix from the previous review round, a test would make the coverage complete.
Suggested fix:
test("returns 429 when Gemini returns a rate limit error", async () => {
await insertResearch("qa-ratelimit-research", 2, "report content");
(generateText as ReturnType<typeof vi.fn>).mockRejectedValue(
new Error("You exceeded your current quota"),
);
const resp = await makeAskRequest("qa-ratelimit-research", "What is this?");
expect(resp.status).toBe(429);
const body = await resp.text();
expect(body).toContain("rate limit");
});🤖 prodboard review
| Instructions: | ||
| 1. Answer ONLY based on information present in the report — do not use general knowledge outside the report. | ||
| 2. If the report does not contain enough information to answer the question, say so clearly. | ||
| 3. Be concise but complete. Use bullet points or short paragraphs as appropriate. |
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💡 Minor / nit: REPORT_QA_PROMPT could be a plain const string
Since the function takes no arguments and always returns the same static string, the () => wrapper adds no value. A plain export const would be marginally simpler:
Suggested fix:
export const REPORT_QA_PROMPT = `You are workers-research, an AI assistant...`;Then at the call site: system: REPORT_QA_PROMPT (no ()). Not a blocker — this is purely cosmetic.
🤖 prodboard review
1 participant
Summary
research_questionsD1 table and reload on page revisitRelated Issue
Prodboard issue: 71d6659b474c7cc8 — [I] [workers-research] Inline Q&A panel for asking follow-up questions against completed research reports
Changes
src/migrations.ts: Added migration0012_create_research_questions.sqlwith the new table and indexsrc/types.ts: AddedResearchQuestioninterfacesrc/prompts.ts: AddedREPORT_QA_PROMPT— instructs Gemini to answer only from report contentsrc/index.tsx: AddedPOST /details/:id/askroute (validates input, fetches report, calls Gemini, stores Q&A); updatedGET /details/:idto load Q&A history for completed researchessrc/templates/layout.tsx: AddedResearchQAItemandResearchQAJSX components; mountedResearchQAinResearchDetailsfor completed researchessrc/static/core.js: AddedsubmitQuestionasync function for HTMX-free form submit with loading stateTest Plan
tscpasses (no TypeScript errors)npm test)npm run lintpasses (Biome)