feat: add Clear analyses button to project detail page

- Backend: DELETE /analysis/project/{project_id} endpoint
- Frontend: Cancella analisi button with confirm dialog (visible only when analyses exist)
- i18n: add clear_analyses and clear_analyses_confirm keys in it/en

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/routers/analysis.py

@@ -29,7 +29,7 @@ from fastapi import APIRouter, Depends, HTTPException, status
 from fastapi.responses import StreamingResponse
 from PIL import Image
 from pydantic import BaseModel
-from sqlalchemy import select
+from sqlalchemy import delete, select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from backend.auth.dependencies import get_current_user
@@ -283,3 +283,14 @@ async def list_analyses(
         .order_by(Analysis.created_at.desc())
     )
     return result.scalars().all()
+
+
+@router.delete("/project/{project_id}", status_code=status.HTTP_204_NO_CONTENT)
+async def clear_analyses(
+    project_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+) -> None:
+    await _check_project_access(project_id, db, current_user)
+    await db.execute(delete(Analysis).where(Analysis.project_id == project_id))
+    await db.commit()

frontend/src/i18n/en.json

@@ -58,6 +58,8 @@
       "pipeline": "Full forensic pipeline",
       "dating": "Document dating"
     },
+    "clear_analyses": "Clear analyses",
+    "clear_analyses_confirm": "Delete all analyses for this case? This cannot be undone.",
     "running": "Running analysis…",
     "done": "Analysis complete"
   },

frontend/src/i18n/it.json

@@ -58,6 +58,8 @@
       "pipeline": "Perizia forense completa",
       "dating": "Datazione documento"
     },
+    "clear_analyses": "Cancella analisi",
+    "clear_analyses_confirm": "Eliminare tutte le analisi di questa perizia? L'operazione non è reversibile.",
     "running": "Analisi in corso…",
     "done": "Analisi completata",
     "select_reference_doc": "Seleziona documento di riferimento",

frontend/src/lib/api.ts

@@ -156,6 +156,7 @@ export const analysisApi = {
   runPipeline: (projectId: number, documentId: number) =>
     api.post<Analysis>("/analysis/pipeline", { project_id: projectId, document_id: documentId }),
   list: (projectId: number) => api.get<Analysis[]>(`/analysis/project/${projectId}`),
+  clearAll: (projectId: number) => api.delete(`/analysis/project/${projectId}`),
 }
 
 // RAG

frontend/src/pages/ProjectDetailPage.tsx

@@ -1,7 +1,7 @@
 import { useEffect, useRef, useState } from "react"
 import { useParams, useNavigate } from "react-router-dom"
 import { useTranslation } from "react-i18next"
-import { ArrowLeft, Upload, Play, Trash2, FileText, ChevronDown, ChevronUp } from "lucide-react"
+import { ArrowLeft, Upload, Play, Trash2, FileText, ChevronDown, ChevronUp, X } from "lucide-react"
 import { Button } from "@/components/ui/button"
 import { Badge } from "@/components/ui/badge"
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"
@@ -119,6 +119,12 @@ export default function ProjectDetailPage() {
     }
   }
 
+  async function handleClearAnalyses() {
+    if (!confirm(t("project.clear_analyses_confirm"))) return
+    await analysisApi.clearAll(projectId)
+    setAnalyses([])
+  }
+
   if (loading) return <div className="p-6 text-muted-foreground">{t("common.loading")}</div>
   if (!project) return <div className="p-6">{t("common.error")}</div>
 
@@ -234,7 +240,15 @@ export default function ProjectDetailPage() {
 
         {/* Right column: analyses results */}
         <div className="lg:col-span-2 space-y-3">
-          <h2 className="text-sm font-medium text-muted-foreground">{t("project.analyses")}</h2>
+          <div className="flex items-center justify-between">
+            <h2 className="text-sm font-medium text-muted-foreground">{t("project.analyses")}</h2>
+            {analyses.length > 0 && (
+              <Button variant="ghost" size="sm" className="h-7 text-xs text-destructive hover:text-destructive gap-1" onClick={handleClearAnalyses}>
+                <X className="h-3 w-3" />
+                {t("project.clear_analyses")}
+              </Button>
+            )}
+          </div>
           {analyses.length === 0 ? (
             <p className="text-sm text-muted-foreground">{t("project.no_analyses")}</p>
           ) : (