robbond
956fc2e31e
Two bugs were causing the model to return {"status":"ok"} / {"status":"ready"}
instead of structured reconstruction data, resulting in POST /api/analyse 500:
1. DOUBLE-WRAPPING BUG (lib/llm/provider.js):
generateReconstruction() called buildPrompt(scenario) on input that was
already a fully-built prompt string from analyseScenario(). This wrapped the
v0.1 prompt (~5000+ chars) in another template layer, producing incomprehensible
output that the model could not parse as structured JSON.
Fix: Pass scenario through directly (it is ALREADY a built prompt).
2. MISSING JSON SPEC (prompts/reconstruct-v0.2.md):
The v0.2 prompt template said 'matching the structure exactly' but never
defined what that structure was. The model invented its own field names
(input_classification, reasoning_mode, anchors) with snake_case instead of
camelCase, which failed Zod validation -> 500 errors.
Fix: Added explicit JSON schema section with exact key names, enum values,
and nested structure matching the Zod validation layer.
Additionally:
- Refactored route to use analyseScenario from lib/analysis (centralized)
- Added lib/analysis.js with shared analysis logic
- Updated components to display promptVersion and validation errors
- Added lib/reconstruction/prompt.js v0.1/v0.2 versioning
- Added lib/reconstruction/schema.js v0.2 Zod schemas
- Added debug tool scripts, evaluation results, and comparison findings
75 lines
3.2 KiB
JavaScript
75 lines
3.2 KiB
JavaScript
import { promises as fs } from "node:fs";
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import { fileURLToPath } from "node:url";
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import { dirname, join } from "node:path";
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const __filename = fileURLToPath(import.meta.url);
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const __dirname = dirname(__filename);
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const PROMPTS_DIR = join(__dirname, "../../prompts");
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/** Available prompt versions */
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export const PROMPT_VERSIONS = ["v0.1", "v0.2"];
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/** Build a v0.1 (extraction-only) prompt inline for backward compatibility */
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function buildV1Prompt(scenario) {
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return `You are a neutral analyst performing an evidence-based reconstruction of the following scenario.
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Rules:
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1. Do NOT invent facts. Only include information present in the scenario or clearly implied.
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2. Distinguish carefully between:
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- Direct observations (you witnessed directly)
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- Reported claims (statements made by another person/entity)
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- Interpretations (your analysis of what something means)
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- Unsupported assumptions (things you are guessing without evidence)
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3. If information is unknown, place it under "openUncertainties" — never guess.
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4. Be precise, concise, and grounded in the text.
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Scenario:
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${scenario}
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Return valid JSON matching this structure exactly:
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{
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"observations": [{"id": "...", "description": "...", "confidence": "low|medium|high"}],
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"reportedClaims": [{"id": "...", "description": "...", "confidence": "low|medium|high", "attributedTo": "person/entity or null"}],
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"assumptions": [{"id": "...", "description": "...", "confidence": "low|medium|high"}],
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"entities": [{"id": "...", "description": "...", "confidence": "low|medium|high"}],
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"transitions": [{"id": "...", "description": "...", "confidence": "low|medium|high", "entity": "...", "previousState": "...", "currentState": "...", "explanationStatus": "..."}],
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"expectedButMissing": [{"id": "...", "description": "...", "confidence": "low|medium|high"}],
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"presentButUnexpected": [{"id": "...", "description": "...", "confidence": "low|medium|high"}],
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"contradictions": [{"id": "...", "description": "...", "confidence": "low|medium|high"}],
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"openUncertainties": [{"id": "...", "description": "...", "confidence": "low|medium|high"}]
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}
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Return ONLY the JSON object. No markdown, no explanation, no preamble.`;
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}
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/** Load a versioned prompt from disk and substitute {{SCENARIO}} */
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async function buildV2Prompt(scenario) {
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try {
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const content = await fs.readFile(join(PROMPTS_DIR, "reconstruct-v0.2.md"), "utf-8");
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return content.replace("{{SCENARIO}}", scenario);
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} catch {
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// Fall back to v0.1 prompt if v0.2 file is missing
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return buildV1Prompt(scenario);
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}
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}
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/**
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* Build an analysis prompt for the given version.
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* @param {"v0.1" | "v0.2"} [version="v0.2"]
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* @returns {Promise<{prompt: string, version: string}>}
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*/
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export async function buildPrompt(scenario, version = "v0.2") {
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let prompt;
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switch (version) {
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case "v0.1":
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prompt = buildV1Prompt(scenario);
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break;
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default: // v0.2
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prompt = await buildV2Prompt(scenario);
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break;
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}
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const strongJsonHint = "\n\nReturn ONLY a valid JSON object starting with { and ending with }. Do NOT include any text before the opening brace or after the closing brace. Do NOT wrap in markdown backticks.";
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return { prompt: prompt + strongJsonHint, version };
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}
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