feat: add CSV export for company analysis results

Add GET /export/{company_name} backend endpoint that returns analysis
records as a downloadable CSV file. Add Export CSV button to the
Analysis page that triggers the download via the API.

Closes leeworks-agents/SPARC#20

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

SPARC/api.py

@@ -9,7 +9,7 @@ from typing import Annotated, List
 
 from fastapi import BackgroundTasks, Depends, FastAPI, HTTPException, Query, Request
 from fastapi.middleware.cors import CORSMiddleware
-from fastapi.responses import JSONResponse
+from fastapi.responses import JSONResponse, StreamingResponse
 from pydantic import BaseModel, EmailStr, Field
 from slowapi import Limiter
 from slowapi.errors import RateLimitExceeded
@@ -389,6 +389,61 @@ async def get_analytics(
     )
 
 
+# ============== Export Endpoints ==============
+
+
+@app.get("/export/{company_name}", tags=["Export"])
+async def export_company_csv(
+    company_name: str,
+    _: UserResponse = Depends(get_current_user),
+):
+    """Export analysis results for a company as a CSV file.
+
+    Returns all stored analysis records for the given company, including
+    analysis type, model used, response text, and timestamp.
+
+    Args:
+        company_name: Company name to export results for
+
+    Returns:
+        CSV file download
+    """
+    import csv
+    import io
+
+    db = get_db_client()
+    # Query all non-cached analysis results for this company
+    with db.get_conn() as conn:
+        with conn.cursor() as cur:
+            cur.execute(
+                """
+                SELECT company_name, analysis_type, model, response, timestamp
+                FROM llm_messages
+                WHERE LOWER(company_name) = LOWER(%s) AND is_cached = FALSE
+                ORDER BY timestamp DESC
+                """,
+                (company_name,),
+            )
+            rows = cur.fetchall()
+
+    if not rows:
+        raise HTTPException(status_code=404, detail=f"No analysis results found for '{company_name}'")
+
+    output = io.StringIO()
+    writer = csv.writer(output)
+    writer.writerow(["company_name", "analysis_type", "model", "analysis", "timestamp"])
+    for row in rows:
+        writer.writerow(row)
+
+    output.seek(0)
+    safe_name = company_name.replace(" ", "_").lower()
+    return StreamingResponse(
+        iter([output.getvalue()]),
+        media_type="text/csv",
+        headers={"Content-Disposition": f'attachment; filename="sparc_{safe_name}_export.csv"'},
+    )
+
+
 # ============== System Endpoints ==============
 
 

frontend/src/api/client.ts

@@ -126,6 +126,23 @@ export const analysisApi = {
   },
 };
 
+// Export API
+export const exportApi = {
+  exportCsv: async (companyName: string): Promise<void> => {
+    const response = await api.get(`/export/${encodeURIComponent(companyName)}`, {
+      responseType: 'blob',
+    });
+    const url = window.URL.createObjectURL(new Blob([response.data]));
+    const link = document.createElement('a');
+    link.href = url;
+    link.setAttribute('download', `sparc_${companyName.toLowerCase().replace(/\s+/g, '_')}_export.csv`);
+    document.body.appendChild(link);
+    link.click();
+    link.remove();
+    window.URL.revokeObjectURL(url);
+  },
+};
+
 // Analytics API
 export const analyticsApi = {
   getAnalytics: async (days = 30): Promise<Analytics> => {

frontend/src/pages/Analysis.tsx

@@ -1,7 +1,7 @@
 import { useState } from 'react';
 import { useMutation } from '@tanstack/react-query';
-import { analysisApi } from '../api/client';
+import { analysisApi, exportApi } from '../api/client';
-import { Search, CheckCircle, AlertCircle, Clock, FileText } from 'lucide-react';
+import { Search, CheckCircle, AlertCircle, Clock, FileText, Download } from 'lucide-react';
 import type { CompanyAnalysis } from '../types';
 
 export function Analysis() {
@@ -106,9 +106,18 @@ export function Analysis() {
           {/* Analysis Content */}
           {result.success && result.analysis && (
             <div className="bg-bg-card/60 backdrop-blur-lg border border-primary/15 rounded-2xl p-6">
-              <h3 className="text-lg font-semibold text-text-primary border-b-2 border-primary/30 pb-2 mb-4">
+              <div className="flex items-center justify-between border-b-2 border-primary/30 pb-2 mb-4">
-                AI Analysis Results
+                <h3 className="text-lg font-semibold text-text-primary">
-              </h3>
+                  AI Analysis Results
+                </h3>
+                <button
+                  onClick={() => exportApi.exportCsv(result.company_name)}
+                  className="flex items-center gap-2 text-sm bg-primary/20 hover:bg-primary/30 text-primary font-medium px-3 py-1.5 rounded-lg transition-colors"
+                >
+                  <Download size={14} />
+                  Export CSV
+                </button>
+              </div>
               <div className="prose prose-invert max-w-none">
                 <div className="text-text-primary whitespace-pre-wrap leading-relaxed">
                   {result.analysis}