Test scalda camere. Refs #108

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

packaging/windows/avvio.py

@@ -348,6 +348,69 @@ def _nessun_utente(db: Path) -> bool:
         return False
 
 
+def camere_da_scaldare(db: Path) -> list[tuple[str, str]]:
+    """Coppie (camera_url, camera_source) configurate nel db (stazioni e task di ricetta), senza doppioni.
+    Solo sorgenti "camera:" che aprono hardware (non "camera:folder"). Errore sqlite -> lista vuota (#108)."""
+    coppie: list[tuple[str, str]] = []
+
+    def aggiungi(url, src) -> None:
+        # #108: valida la coppia e scarta duplicati e sorgenti che non aprono hardware
+        if not (isinstance(url, str) and isinstance(src, str) and url.strip() and src.strip()):
+            return
+        if not src.startswith("camera:") or src == "camera:folder":
+            return
+        if (url, src) not in coppie:
+            coppie.append((url, src))
+
+    try:
+        con = sqlite3.connect(f"file:{db.as_posix()}?mode=ro", uri=True, timeout=2)
+        try:
+            for url, src in con.execute("SELECT camera_url, camera_source FROM stations"):
+                aggiungi(url, src)
+            for (blob,) in con.execute("SELECT acquisition_json FROM recipe_tasks WHERE acquisition_json IS NOT NULL"):
+                try:
+                    cfg = json.loads(blob)
+                except (TypeError, ValueError):
+                    continue  # #108: JSON non valido, si salta
+                if isinstance(cfg, dict):
+                    aggiungi(cfg.get("camera_url"), cfg.get("camera_source"))
+        finally:
+            con.close()
+    except Exception:
+        return []
+    return coppie
+
+
+def scalda_camere(db: Path) -> None:
+    """Apre ogni camera configurata con un grab a vuoto, cosi' il primo "Acquisisci" non aspetta ~25 s (#108).
+    Gira in un thread daemon: nessuna eccezione esce."""
+    try:
+        camere = camere_da_scaldare(db)
+        if not camere:
+            return
+        for _ in range(300):  # aspetta il servizio camera (max ~60 s), come _apri_browser_quando_pronto
+            if _porta_aperta(PORTA_CAMERA):
+                break
+            time.sleep(0.2)
+        else:
+            log.warning("scalda camere: servizio camera non raggiungibile, salto")
+            return
+        for url, src in camere:
+            t0 = time.monotonic()
+            try:
+                richiesta = urllib.request.Request(
+                    f"{url.rstrip('/')}/camera/grab",
+                    data=json.dumps({"source": src, "trigger": "continuo", "timeout_ms": 5000}).encode("utf-8"),
+                    headers={"Content-Type": "application/json"}, method="POST")
+                with urllib.request.urlopen(richiesta, timeout=90) as r:
+                    esito = f"HTTP {r.status}"
+                log.info("scalda camera %s: %s in %.1f s", src, esito, time.monotonic() - t0)
+            except Exception as e:  # #108: una camera che non risponde non ferma le altre
+                log.warning("scalda camera %s: %s dopo %.1f s", src, e, time.monotonic() - t0)
+    except Exception:
+        log.exception("scalda camere non riuscito")
+
+
 def _apri_browser_quando_pronto(url: str, porte: tuple[int, ...]) -> None:
     # Aspetta che i server ascoltino (max ~60 s), poi apre il browser predefinito
     for _ in range(300):
@@ -509,6 +572,8 @@ def main(argv=None) -> int:
 
     registra_strumenti()  # prima del server: il worker di visione legge registry() gia' popolato (#82)
     thread = avvia_server(args.host, dati)
+    # #108: apre le camere configurate con un grab a vuoto, con o senza browser
+    threading.Thread(target=scalda_camere, args=(dati / "tmf.db",), daemon=True).start()
     if not args.senza_browser:
         # database senza utenti: si apre la pagina di setup del backend (SETUP_PASSWORD in config.env)
         url = (f"http://127.0.0.1:{PORTA_BACKEND}/api/setup" if _nessun_utente(dati / "tmf.db")

packaging/windows/tests/test_avvio.py

@@ -271,3 +271,77 @@ def test_avvio_normale_registra_gli_strumenti_prima_del_server(avvio, tmp_path,
     assert avvio.main(["--senza-finestre", "--senza-browser"]) == 0
     dati = tmp_path / "Tielogic" / "TieMeasureFlow"
     assert avvio.chiamate == ["migrazioni", "strumenti", ("127.0.0.1", dati)]
+
+
+# ---------------------------------------------------------------- scalda camere (#108)
+
+def _db_camere(percorso):
+    # #108: db minimo con le due tabelle lette da camere_da_scaldare
+    con = sqlite3.connect(percorso)
+    con.execute("CREATE TABLE stations (id INTEGER PRIMARY KEY, camera_url TEXT, camera_source TEXT)")
+    con.execute("CREATE TABLE recipe_tasks (id INTEGER PRIMARY KEY, acquisition_json TEXT)")
+    con.executemany("INSERT INTO stations (camera_url, camera_source) VALUES (?, ?)", [
+        ("http://127.0.0.1:8765", "camera:601020"),   # valida
+        (None, None),                                  # stazione senza camera
+        ("http://127.0.0.1:8765", "camera:folder"),   # non apre hardware
+    ])
+    con.executemany("INSERT INTO recipe_tasks (acquisition_json) VALUES (?)", [
+        (json.dumps({"camera_url": "http://127.0.0.1:8765", "camera_source": "camera:601020"}),),  # duplicato
+        (json.dumps({"camera_url": "http://10.0.0.5:8765/", "camera_source": "camera:777"}),),     # valida
+        ("{rotto",),                                                                               # JSON non valido
+        (None,),
+    ])
+    con.commit()
+    con.close()
+
+
+def test_camere_da_scaldare_filtra_e_deduplica(avvio, tmp_path):
+    db = tmp_path / "tmf.db"
+    _db_camere(db)
+    assert avvio.camere_da_scaldare(db) == [
+        ("http://127.0.0.1:8765", "camera:601020"),
+        ("http://10.0.0.5:8765/", "camera:777"),
+    ]
+
+
+def test_camere_da_scaldare_db_inesistente(avvio, tmp_path):
+    assert avvio.camere_da_scaldare(tmp_path / "non_esiste.db") == []
+
+
+def test_scalda_camere_una_chiamata_per_coppia(avvio, tmp_path, monkeypatch):
+    db = tmp_path / "tmf.db"
+    _db_camere(db)
+    monkeypatch.setattr(avvio, "_porta_aperta", lambda porta: True)
+    chiamate = []
+
+    class Risposta:
+        status = 200
+        def __enter__(self): return self
+        def __exit__(self, *a): return False
+
+    def finto_urlopen(richiesta, timeout=None):
+        chiamate.append((richiesta.full_url, json.loads(richiesta.data), richiesta.get_method(), timeout))
+        return Risposta()
+
+    monkeypatch.setattr(avvio.urllib.request, "urlopen", finto_urlopen)
+    avvio.scalda_camere(db)
+    corpo = {"trigger": "continuo", "timeout_ms": 5000}
+    assert chiamate == [
+        ("http://127.0.0.1:8765/camera/grab", {"source": "camera:601020", **corpo}, "POST", 90),
+        ("http://10.0.0.5:8765/camera/grab", {"source": "camera:777", **corpo}, "POST", 90),
+    ]
+
+
+def test_scalda_camere_eccezione_urlopen_non_esce(avvio, tmp_path, monkeypatch):
+    db = tmp_path / "tmf.db"
+    _db_camere(db)
+    monkeypatch.setattr(avvio, "_porta_aperta", lambda porta: True)
+    tentativi = []
+
+    def urlopen_rotto(richiesta, timeout=None):
+        tentativi.append(richiesta.full_url)
+        raise OSError("camera irraggiungibile")
+
+    monkeypatch.setattr(avvio.urllib.request, "urlopen", urlopen_rotto)
+    avvio.scalda_camere(db)  # non solleva e passa alla camera successiva
+    assert len(tentativi) == 2

src/backend/api/routers/vision.py

@@ -8,6 +8,7 @@ import base64
 import binascii
 import io
 import json
+import mimetypes
 from typing import Literal
 
 from fastapi.responses import FileResponse
@@ -366,6 +367,20 @@ async def preview(
     return await vision_service.preview(db, task, await _read_image(image))
 
 
+@router.post("/dxf-preview")
+async def dxf_preview(
+    dxf: UploadFile = File(...),
+    current_user: User = Depends(require_maker),
+) -> dict:
+    """#101: anteprima del DXF scelto nel wizard «Crea ricetta da DXF» (contorni
+    in mm e dimensioni), letto dal worker con lo stesso lettore del confronto.
+    Non scrive nulla; stesso limite di dimensione della rotta dxf-compare."""
+    dxf_bytes = await dxf.read()
+    if not validate_file_size(len(dxf_bytes)):
+        raise _422([f"the DXF exceeds {settings.max_upload_size_mb}MB"])
+    return await vision_service.dxf_preview(dxf_bytes)
+
+
 @router.post("/tasks/{task_id}/recipe/dxf-compare")
 async def create_dxf_compare_recipe(
     task_id: int,
@@ -433,8 +448,50 @@ async def create_dxf_compare_recipe(
     placed, errors = vision_service.match_recipe_files(body["graph"], uploads)
     if errors:
         raise _422(errors)
+    # #105: l'immagine di riferimento resta nella cartella (non e' in meta, quindi
+    # /validate e l'esecuzione la ignorano) e il wizard puo' riaprirla; entra nel digest.
+    placed[f"riferimento.{_IMAGE_EXTENSIONS.get(image.content_type, 'png')}"] = image_bytes
     recipe_dir, check = await _store_validate_assign(task, body["graph"], placed)
     await vision_service.ensure_points_quote(db, task, min_points_pct)
     await db.commit()
     response.update(saved=True, recipe_dir=recipe_dir, outputs=check["outputs"])
     return response
+
+
+@router.get("/tasks/{task_id}/recipe/dxf-compare/source")
+async def get_dxf_compare_source(
+    task_id: int,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(require_maker),
+) -> dict:
+    """#105: i parametri della ricetta fatta con «Crea ricetta da DXF», per modificarla.
+
+    404 se il task non ha una ricetta del wizard (nessuna, o caricata a mano).
+    """
+    task = await _task_or_404(db, task_id)
+    source = vision_service.dxf_compare_source(task.vision_json, task.vision_recipe_dir)
+    if source is None:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="nessuna ricetta da DXF su questo task",
+        )
+    return source
+
+
+@router.get("/tasks/{task_id}/recipe/files/{path:path}")
+async def get_recipe_file(
+    task_id: int,
+    path: str,
+    db: AsyncSession = Depends(get_db),
+    current_user: User = Depends(require_maker),
+) -> FileResponse:
+    """#105: un file della cartella ricetta del task (DXF, immagine di riferimento).
+
+    Percorso non sicuro, file assente o task senza ricetta: sempre 404.
+    """
+    task = await _task_or_404(db, task_id)
+    target = vision_service.recipe_file_path(task.vision_recipe_dir, path)
+    if target is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="file not found")
+    media_type = mimetypes.guess_type(target.name)[0] or "application/octet-stream"
+    return FileResponse(target, media_type=media_type)

src/backend/services/vision_service.py

@@ -224,6 +224,25 @@ async def dxf_compare_recipe(
     return body
 
 
+async def dxf_preview(dxf_bytes: bytes, worker_url: str | None = None) -> dict:
+    """#101: anteprima del DXF (contorni in mm + dimensioni) dal worker. Sostituita dai test."""
+    body = await call_worker_multipart(
+        "/dxf/preview",
+        files={"dxf": ("disegno.dxf", dxf_bytes, "application/octet-stream")},
+        data={},
+        worker_url=worker_url,
+    )
+    # forma minima del contratto: senza contorni e dimensioni non c'e' nulla da mostrare
+    required = {"contorni", "bbox", "larghezza_mm", "altezza_mm", "entita", "punti"}
+    if not required <= body.keys():
+        raise HTTPException(
+            status_code=status.HTTP_502_BAD_GATEWAY,
+            detail="the vision worker's answer was malformed: missing "
+                   + ", ".join(sorted(required - body.keys())),
+        )
+    return body
+
+
 # Stati di fetch_station_calibration (#83)
 CAL_OK = "ok"
 CAL_NO_CAMERA = "no_camera"            # la stazione non ha camera_url/camera_source
@@ -466,6 +485,84 @@ def list_recipe_files(recipe_dir: str | None) -> list[str]:
     )
 
 
+# #105: nomi e id della ricetta costruita da «Crea ricetta da DXF» (src/vision/costruttori.py).
+_WIZARD_DXF_FILE = "disegno.dxf"
+_WIZARD_CALIBRATION_FILE = "calibrazione.json"
+_WIZARD_REFERENCE_STEM = "riferimento"
+
+
+def _is_real_number(value: object) -> bool:
+    return isinstance(value, (int, float)) and not isinstance(value, bool) and math.isfinite(value)
+
+
+def dxf_compare_source(graph: dict | None, recipe_dir: str | None) -> dict | None:
+    """#105: i parametri con cui il wizard ha costruito la ricetta, per riaprirlo.
+
+    Legge i valori dal grafo (tool `pezzo` LocateBlob, tool `dxf` CompareDxf) e i
+    file dalla cartella ricetta. None se il grafo non e' uno del wizard (il task
+    non ha ricetta, o l'ha caricata a mano): la rotta risponde 404. Pura: niente DB.
+    """
+    if not isinstance(graph, dict) or not isinstance(graph.get("tools"), list):
+        return None
+    tools = {t.get("id"): t for t in graph["tools"] if isinstance(t, dict)}
+    pezzo, confronto = tools.get("pezzo"), tools.get("dxf")
+    if not pezzo or pezzo.get("kind") != "LocateBlob":
+        return None
+    if not confronto or confronto.get("kind") != "CompareDxf":
+        return None
+    p_values = pezzo.get("values") if isinstance(pezzo.get("values"), dict) else {}
+    c_values = confronto.get("values") if isinstance(confronto.get("values"), dict) else {}
+    band, min_pct = c_values.get("band_plus"), c_values.get("points_in_pct_nominal")
+    if not (_is_real_number(band) and _is_real_number(min_pct)):
+        return None
+    polarity = p_values.get("polarity")
+    if polarity not in ("dark", "light"):
+        polarity = "dark"  # default di LocateBlob e della rotta di creazione
+
+    folder = None
+    if recipe_dir:
+        try:
+            folder = _safe_join(settings.upload_path, recipe_dir)
+        except (ValueError, OSError):
+            folder = None
+    if folder is not None and not folder.is_dir():
+        folder = None
+
+    px_per_mm = None
+    dxf_name = None
+    image_name = None
+    if folder is not None:
+        try:
+            cal = json.loads((folder / _WIZARD_CALIBRATION_FILE).read_text(encoding="utf-8"))
+            value = cal.get("px_per_mm") if isinstance(cal, dict) else None
+            if _is_real_number(value) and value > 0:
+                px_per_mm = float(value)
+        except (OSError, ValueError):
+            px_per_mm = None  # manca o illeggibile: il wizard chiedera' la scala
+        if (folder / _WIZARD_DXF_FILE).is_file():
+            dxf_name = _WIZARD_DXF_FILE
+        for candidate in sorted(folder.glob(f"{_WIZARD_REFERENCE_STEM}.*")):
+            if candidate.is_file():
+                image_name = candidate.name
+                break
+    return {
+        "band_mm": float(band), "min_points_pct": float(min_pct), "polarity": polarity,
+        "px_per_mm": px_per_mm, "dxf": dxf_name, "image": image_name,
+    }
+
+
+def recipe_file_path(recipe_dir: str | None, relative: str) -> Path | None:
+    """#105: percorso di un file della cartella ricetta, o None se non sicuro o assente."""
+    if not recipe_dir:
+        return None
+    try:
+        folder = _safe_join(settings.upload_path, recipe_dir)
+        target = _safe_join(folder, relative)
+    except (ValueError, OSError):
+        return None
+    return target if target.is_file() else None
+
+
 def save_result_files(
     task_id: int, image_bytes: bytes, overlay: list, image_ext: str = "png",
 ) -> tuple[str, str]:
@@ -861,9 +958,29 @@ async def ensure_points_quote(
     Una sola volta: se esiste gia' una quota con `vision_output`, non si tocca.
     Se la versione ha gia' misure non si scrive (il copy-on-write sta nel router
     dei task, qui non si aggira): ritorna False. Ritorna True se l'ha creata.
+    #105: unica eccezione, la quota nata da qui (`dxf.points_in_pct`, «Punti in
+    tolleranza») senza misure segue la soglia nuova: ltl = min_points_pct, e
+    ritorna True anche in quel caso.
     """
     from src.backend.services import recipe_service  # import locale: evita cicli
 
+    # #105: ricetta ripresa e salvata con un'altra soglia -> la quota la segue
+    own = (await db.execute(
+        select(RecipeSubtask)
+        .where(RecipeSubtask.task_id == task.id)
+        .where(RecipeSubtask.vision_output == "dxf.points_in_pct")
+        .where(RecipeSubtask.description == "Punti in tolleranza")
+        .limit(1)
+    )).scalar_one_or_none()
+    if own is not None:
+        # soglia invariata o versione con misure: la quota resta com'e'
+        same = own.ltl is not None and float(own.ltl) == float(min_points_pct)
+        if same or await recipe_service.version_has_measurements(db, task.version_id):
+            return False
+        own.ltl = min_points_pct
+        await db.flush()
+        return True
+
     existing = (await db.execute(
         select(RecipeSubtask.id)
         .where(RecipeSubtask.task_id == task.id)

src/backend/tests/test_vision_dxf_preview.py

@@ -0,0 +1,90 @@
+"""#101: POST /api/vision/dxf-preview, anteprima del DXF nel wizard.
+
+Il worker non gira nei test: `vision_service.dxf_preview` si sostituisce.
+"""
+import pytest
+from fastapi import HTTPException
+
+from src.backend.config import settings
+from src.backend.services import vision_service
+from src.backend.tests.conftest import auth_headers
+
+BODY = {
+    "contorni": [[[0.0, 0.0], [10.0, 0.0], [10.0, 5.0], [0.0, 5.0], [0.0, 0.0]]],
+    "bbox": {"xmin": 0.0, "ymin": 0.0, "xmax": 10.0, "ymax": 5.0},
+    "larghezza_mm": 10.0, "altezza_mm": 5.0, "entita": 1, "punti": 5,
+}
+
+
+def _post(client, user, content=b"0\nEOF"):
+    return client.post(
+        "/api/vision/dxf-preview",
+        headers=auth_headers(user),
+        files={"dxf": ("d.dxf", content, "application/octet-stream")},
+    )
+
+
+@pytest.mark.asyncio
+async def test_dxf_preview_forwards_the_file_and_returns_the_worker_body(
+    client, maker_user, monkeypatch,
+):
+    calls = []
+
+    async def fake(dxf_bytes, worker_url=None):
+        calls.append(dxf_bytes)
+        return BODY
+
+    monkeypatch.setattr("src.backend.services.vision_service.dxf_preview", fake)
+    resp = await _post(client, maker_user, b"DXF-BYTES")
+    assert resp.status_code == 200, resp.text
+    assert resp.json() == BODY
+    assert calls == [b"DXF-BYTES"]
+
+
+@pytest.mark.asyncio
+async def test_dxf_preview_forwards_the_worker_422(client, maker_user, monkeypatch):
+    async def fake(dxf_bytes, worker_url=None):
+        raise HTTPException(status_code=422, detail="DXF illeggibile: file vuoto")
+
+    monkeypatch.setattr("src.backend.services.vision_service.dxf_preview", fake)
+    resp = await _post(client, maker_user, b"")
+    assert resp.status_code == 422
+    assert resp.json()["detail"] == "DXF illeggibile: file vuoto"
+
+
+@pytest.mark.asyncio
+async def test_dxf_preview_requires_maker(client, measurement_tec_user, monkeypatch):
+    async def fake(dxf_bytes, worker_url=None):
+        return BODY
+
+    monkeypatch.setattr("src.backend.services.vision_service.dxf_preview", fake)
+    resp = await _post(client, measurement_tec_user)
+    assert resp.status_code == 403
+
+
+@pytest.mark.asyncio
+async def test_dxf_preview_too_big_is_422(client, maker_user, monkeypatch):
+    monkeypatch.setattr(settings, "max_upload_size_mb", 0)
+    resp = await _post(client, maker_user, b"x" * 10)
+    assert resp.status_code == 422
+
+
+@pytest.mark.asyncio
+async def test_dxf_preview_service_posts_to_worker_and_checks_shape(monkeypatch):
+    seen = {}
+
+    async def fake_multipart(path, *, files, data, worker_url=None, timeout=120.0):
+        seen.update(path=path, files=files)
+        return BODY
+
+    monkeypatch.setattr(vision_service, "call_worker_multipart", fake_multipart)
+    assert await vision_service.dxf_preview(b"abc") == BODY
+    assert seen["path"] == "/dxf/preview" and seen["files"]["dxf"][1] == b"abc"
+
+    async def malformed(path, *, files, data, worker_url=None, timeout=120.0):
+        return {"contorni": []}
+
+    monkeypatch.setattr(vision_service, "call_worker_multipart", malformed)
+    with pytest.raises(HTTPException) as exc:
+        await vision_service.dxf_preview(b"abc")
+    assert exc.value.status_code == 502

src/backend/tests/test_vision_dxf_source.py

@@ -0,0 +1,226 @@
+"""#105: la ricetta «Crea ricetta da DXF» si puo' riaprire e modificare.
+
+Il worker non gira nei test: si finge come in test_vision_dxf_compare.
+"""
+import base64
+import io
+import json
+
+import pytest
+from PIL import Image
+from sqlalchemy import select
+
+from src.backend.config import settings
+from src.backend.models.orm.task import RecipeSubtask, RecipeTask
+from src.backend.services import vision_service
+from src.backend.tests.conftest import auth_headers
+from src.backend.tests.test_vision_dxf_compare import (  # noqa: F401 (fixture)
+    redirect_uploads, validate_ok,
+)
+from src.backend.tests.test_vision_recipe_upload import an_image, make_task
+
+DXF = b"0\nEOF"
+
+
+def _wizard_graph(band=0.3, pct=90.0, polarity="light") -> dict:
+    """Grafo come lo costruisce src/vision/costruttori.py::_graph."""
+    return {
+        "schema_version": 2, "name": "Confronto DXF",
+        "meta": {"dxf": {"disegno": {"path": "disegno.dxf", "sha256": "x"}},
+                 "calibration": {"path": "calibrazione.json", "sha256": "y"}},
+        "tools": [
+            {"id": "pezzo", "name": "Pezzo", "kind": "LocateBlob",
+             "values": {"polarity": polarity}, "links": {}},
+            {"id": "dxf", "name": "Confronto DXF", "kind": "CompareDxf",
+             "values": {"band_plus": band, "band_minus": band, "points_in_pct_nominal": pct},
+             "links": {}},
+        ],
+    }
+
+
+@pytest.fixture
+def w2(monkeypatch):
+    async def fake(image_bytes, dxf_bytes, **kwargs):
+        graph = _wizard_graph(kwargs["band_mm"], kwargs["min_points_pct"], kwargs["polarity"])
+        return {
+            "graph": graph,
+            "files": {
+                "disegno.dxf": base64.b64encode(dxf_bytes).decode(),
+                "calibrazione.json": base64.b64encode(
+                    json.dumps({"px_per_mm": kwargs["px_per_mm"]}).encode()).decode(),
+            },
+            "outputs": {"dxf.points_in_pct": 99.0}, "overlay": [], "outcome": "pass",
+        }
+    monkeypatch.setattr("src.backend.services.vision_service.dxf_compare_recipe", fake)
+
+
+def _bmp() -> bytes:
+    buf = io.BytesIO()
+    Image.new("L", (32, 32)).save(buf, format="BMP")
+    return buf.getvalue()
+
+
+def _save(client, user, task, *, image=None, ctype="image/png", **data):
+    return client.post(
+        f"/api/vision/tasks/{task.id}/recipe/dxf-compare",
+        headers=auth_headers(user),
+        files={"image": ("p", image if image is not None else an_image(), ctype),
+               "dxf": ("d.dxf", DXF, "application/octet-stream")},
+        data={"save": "true", "px_per_mm": "10", **{k: str(v) for k, v in data.items()}},
+    )
+
+
+@pytest.mark.asyncio
+async def test_save_keeps_the_reference_image_png(client, db_session, maker_user, w2, validate_ok):
+    task, _ = await make_task(db_session, maker_user)
+    image = an_image()
+
+    resp = await _save(client, maker_user, task, image=image)
+
+    assert resp.status_code == 200, resp.text
+    folder = settings.upload_path / resp.json()["recipe_dir"]
+    assert (folder / "riferimento.png").read_bytes() == image
+    assert (folder / "disegno.dxf").read_bytes() == DXF  # il resto della cartella non cambia
+
+
+@pytest.mark.asyncio
+async def test_save_keeps_the_reference_image_bmp(client, db_session, maker_user, w2, validate_ok):
+    task, _ = await make_task(db_session, maker_user)
+    image = _bmp()
+
+    resp = await _save(client, maker_user, task, image=image, ctype="image/bmp")
+
+    assert resp.status_code == 200, resp.text
+    folder = settings.upload_path / resp.json()["recipe_dir"]
+    assert (folder / "riferimento.bmp").read_bytes() == image
+
+
+@pytest.mark.asyncio
+async def test_source_returns_what_the_wizard_saved(client, db_session, maker_user, w2, validate_ok):
+    task, _ = await make_task(db_session, maker_user)
+    await _save(client, maker_user, task, band_mm=0.3, min_points_pct=90, polarity="light")
+
+    resp = await client.get(
+        f"/api/vision/tasks/{task.id}/recipe/dxf-compare/source", headers=auth_headers(maker_user),
+    )
+
+    assert resp.status_code == 200, resp.text
+    assert resp.json() == {
+        "band_mm": 0.3, "min_points_pct": 90.0, "polarity": "light", "px_per_mm": 10.0,
+        "dxf": "disegno.dxf", "image": "riferimento.png",
+    }
+
+
+@pytest.mark.asyncio
+async def test_source_404_without_recipe_or_with_a_hand_made_graph(client, db_session, maker_user):
+    task, _ = await make_task(db_session, maker_user)
+    url = f"/api/vision/tasks/{task.id}/recipe/dxf-compare/source"
+
+    assert (await client.get(url, headers=auth_headers(maker_user))).status_code == 404
+
+    task.vision_json = {"schema_version": 2, "name": "a mano", "tools": [], "meta": {}}
+    await db_session.commit()
+    resp = await client.get(url, headers=auth_headers(maker_user))
+    assert resp.status_code == 404
+    assert resp.json()["detail"] == "nessuna ricetta da DXF su questo task"
+
+
+@pytest.mark.asyncio
+async def test_source_needs_maker(client, db_session, maker_user, measurement_tec_user):
+    task, _ = await make_task(db_session, maker_user)
+    resp = await client.get(
+        f"/api/vision/tasks/{task.id}/recipe/dxf-compare/source",
+        headers=auth_headers(measurement_tec_user),
+    )
+    assert resp.status_code == 403
+
+
+def test_source_of_an_old_recipe_has_no_image_and_no_unreadable_scale(tmp_path, monkeypatch):
+    monkeypatch.setattr(settings, "upload_dir", str(tmp_path))
+    folder = tmp_path / "vision" / "recipes" / "1" / "abc"
+    folder.mkdir(parents=True)
+    (folder / "disegno.dxf").write_bytes(DXF)
+    (folder / "calibrazione.json").write_text("{non json", encoding="utf-8")
+
+    source = vision_service.dxf_compare_source(_wizard_graph(), "vision/recipes/1/abc")
+
+    assert source["image"] is None and source["px_per_mm"] is None
+    assert source["dxf"] == "disegno.dxf"
+    assert vision_service.dxf_compare_source(None, None) is None
+    # senza cartella i valori del grafo restano
+    assert vision_service.dxf_compare_source(_wizard_graph(), None)["dxf"] is None
+
+
+@pytest.mark.asyncio
+async def test_files_returns_the_bytes(client, db_session, maker_user, w2, validate_ok):
+    task, _ = await make_task(db_session, maker_user)
+    image = _bmp()
+    await _save(client, maker_user, task, image=image, ctype="image/bmp")
+
+    img = await client.get(
+        f"/api/vision/tasks/{task.id}/recipe/files/riferimento.bmp", headers=auth_headers(maker_user),
+    )
+    dxf = await client.get(
+        f"/api/vision/tasks/{task.id}/recipe/files/disegno.dxf", headers=auth_headers(maker_user),
+    )
+
+    assert img.status_code == 200 and img.content == image
+    assert img.headers["content-type"].startswith("image/")
+    assert dxf.status_code == 200 and dxf.content == DXF
+    assert dxf.headers["content-type"]  # dal tipo dell'estensione, di ripiego octet-stream
+
+
+@pytest.mark.asyncio
+async def test_files_404_on_unsafe_missing_or_no_recipe(client, db_session, maker_user, w2, validate_ok):
+    task, _ = await make_task(db_session, maker_user)
+    base = f"/api/vision/tasks/{task.id}/recipe/files/"
+    headers = auth_headers(maker_user)
+
+    assert (await client.get(base + "disegno.dxf", headers=headers)).status_code == 404  # nessuna ricetta
+
+    await _save(client, maker_user, task)
+    assert (await client.get(base + "manca.bmp", headers=headers)).status_code == 404
+    for unsafe in ("../x", "%2e%2e/x", "..%2f..%2fx", "sub/../../x"):
+        assert (await client.get(base + unsafe, headers=headers)).status_code == 404, unsafe
+    # la funzione non lascia uscire dalla cartella nemmeno con un assoluto
+    assert vision_service.recipe_file_path("vision/recipes/1/abc", "../x") is None
+    assert vision_service.recipe_file_path("vision/recipes/1/abc", "/etc/passwd") is None
+    assert vision_service.recipe_file_path("../fuori", "x") is None
+
+
+@pytest.mark.asyncio
+async def test_resave_follows_the_new_threshold(client, db_session, maker_user, w2, validate_ok):
+    task, _ = await make_task(db_session, maker_user)
+    task_id = task.id
+    await _save(client, maker_user, task, min_points_pct=95)
+
+    resp = await _save(client, maker_user, task, min_points_pct=80)
+
+    assert resp.status_code == 200, resp.text
+    db_session.expire_all()
+    quotes = (await db_session.execute(
+        select(RecipeSubtask).where(RecipeSubtask.vision_output == "dxf.points_in_pct")
+        .where(RecipeSubtask.task_id == task_id))).scalars().all()
+    assert len(quotes) == 1 and float(quotes[0].ltl) == 80.0
+
+
+@pytest.mark.asyncio
+async def test_ensure_points_quote_leaves_quote_with_measurements(
+    client, db_session, maker_user, w2, validate_ok, monkeypatch,
+):
+    task, _ = await make_task(db_session, maker_user)
+    task_id = task.id
+    await _save(client, maker_user, task, min_points_pct=95)
+
+    async def has_measurements(db, version_id):
+        return True
+    monkeypatch.setattr("src.backend.services.recipe_service.version_has_measurements", has_measurements)
+    task = await db_session.get(RecipeTask, task_id)
+
+    changed = await vision_service.ensure_points_quote(db_session, task, 80)
+
+    assert changed is False
+    quote = (await db_session.execute(
+        select(RecipeSubtask).where(RecipeSubtask.vision_output == "dxf.points_in_pct")
+        .where(RecipeSubtask.task_id == task_id))).scalar_one()
+    assert float(quote.ltl) == 95.0

src/frontend/flask_app/blueprints/admin.py

@@ -182,7 +182,7 @@ def api_camera_sources():
     if parsed.scheme not in ("http", "https") or not parsed.netloc:
         return jsonify({"error": True, "detail": _("Indirizzo della camera non valido")}), 400
     try:
-        resp = http_requests.get(f"{url.rstrip('/')}/camera/sources", timeout=5)
+        resp = http_requests.get(f"{url.rstrip('/')}/camera/sources", timeout=15)  # #106: era 5, la prima enumerazione dopo l'avvio ha preso 3,7 s
     except http_requests.RequestException as exc:
         return jsonify({
             "error": True,

src/frontend/flask_app/blueprints/maker.py

@@ -5,6 +5,7 @@ import math
 import requests as http_requests
 
 from functools import wraps
+from urllib.parse import quote  # #105: percorso del file ricetta nell'URL del backend
 
 from flask import Blueprint, Response, abort, flash, jsonify, redirect, render_template, request, session, url_for
 from flask_babel import gettext as _
@@ -16,6 +17,9 @@ from services.file_proxy import proxy_file
 
 maker_bp = Blueprint("maker", __name__, url_prefix="/maker")
 
+# #106: la prima apertura GenTL dopo l'avvio supera 15 s, il grab ha bisogno di piu margine
+CAMERA_GRAB_TIMEOUT_S = 60
+
 
 # ============================================================================
 # PAGINE (GET)
@@ -607,7 +611,7 @@ def api_station_camera_grab(station_id: int):
         resp = http_requests.post(
             f"{camera_url.rstrip('/')}/camera/grab",
             json={"source": camera_source, "trigger": "continuo", "timeout_ms": 5000},
-            timeout=15,
+            timeout=CAMERA_GRAB_TIMEOUT_S,  # #106: era 15, troppo corto alla prima apertura GenTL
         )
     except http_requests.RequestException as exc:
         return jsonify({
@@ -701,6 +705,65 @@ def api_dxf_compare_recipe(task_id: int):
     return jsonify(resp), 200
 
 
+# #105: parametri della ricetta DXF gia' salvata sul task, per riaprire il wizard compilato
+@maker_bp.route("/api/vision/tasks/<int:task_id>/recipe/dxf-compare/source", methods=["GET"])
+@login_required
+@role_required("Maker")
+def api_dxf_compare_source(task_id: int):
+    """Proxy: parametri e file della ricetta DXF del task (404 se non ce n'e' una) (#105)."""
+    resp = api_client.get(f"/api/vision/tasks/{task_id}/recipe/dxf-compare/source")
+    # Codice e corpo del backend arrivano com'e': il 404 vuol dire «nessuna ricetta da DXF»
+    if resp.get("error"):
+        return jsonify(resp), resp.get("status_code", 500)
+    return jsonify(resp), 200
+
+
+# #105: un file della cartella ricetta (DXF, immagine di riferimento) come byte, non JSON
+@maker_bp.route("/api/vision/tasks/<int:task_id>/recipe/files/<path:path>", methods=["GET"])
+@login_required
+@role_required("Maker")
+def api_vision_recipe_file(task_id: int, path: str):
+    """Proxy: byte di un file della cartella ricetta del task, con content-type del backend (#105)."""
+    # Niente segmenti '..' o backslash: urllib3 normalizzerebbe l'URL fuori da questa rotta del backend
+    if "\\" in path or ".." in path.split("/"):
+        return jsonify({"error": True, "detail": _("File non trovato")}), 404
+    try:
+        resp = http_requests.get(
+            f"{Config.API_SERVER_URL.rstrip('/')}/api/vision/tasks/{task_id}/recipe/files/{quote(path)}",
+            headers={"X-API-Key": session.get("api_key", "")},
+            timeout=30,
+        )
+    except http_requests.RequestException as exc:
+        return jsonify({
+            "error": True,
+            "detail": _("Servizio non raggiungibile: %(detail)s", detail=str(exc)),
+        }), 502
+    return Response(
+        resp.content,
+        status=resp.status_code,
+        content_type=resp.headers.get("content-type", "application/octet-stream"),
+    )
+
+
+# #101: anteprima del DXF appena scelto nel wizard (contorni letti dal vision worker)
+@maker_bp.route("/api/vision/dxf-preview", methods=["POST"])
+@login_required
+@role_required("Maker")
+def api_dxf_preview():
+    """Proxy: anteprima del DXF (contorni, bbox, L x H) prima di creare la ricetta (#101)."""
+    dxf = request.files.get("dxf")
+    if dxf is None or not dxf.filename:
+        return jsonify({"error": True, "detail": _("Serve il file DXF")}), 400
+
+    resp = api_client.post(
+        "/api/vision/dxf-preview",
+        files={"dxf": (dxf.filename, dxf.read(), dxf.mimetype or "application/octet-stream")},
+    )
+    if resp.get("error"):
+        return jsonify(resp), resp.get("status_code", 500)
+    return jsonify(resp), 200
+
+
 @maker_bp.route("/api/files/<path:file_path>", methods=["GET"])
 @login_required
 def api_get_file(file_path: str):

src/frontend/flask_app/blueprints/measure.py

@@ -17,6 +17,9 @@ from services.file_proxy import proxy_file
 
 measure_bp = Blueprint("measure", __name__)
 
+# #106: la prima apertura GenTL dopo l'avvio supera 15 s, il grab ha bisogno di piu margine
+CAMERA_GRAB_TIMEOUT_S = 60
+
 # Session key holding a station chosen at runtime, overriding Config.STATION_CODE.
 STATION_OVERRIDE_KEY = "station_override"
 
@@ -1117,7 +1120,7 @@ def api_vision_grab():
         resp = http_requests.post(
             f"{camera_url.rstrip('/')}/camera/grab",
             json={"source": camera_source, "trigger": "continuo", "timeout_ms": 5000},
-            timeout=15,
+            timeout=CAMERA_GRAB_TIMEOUT_S,  # #106: era 15, troppo corto alla prima apertura GenTL
         )
     except http_requests.RequestException as exc:
         return jsonify({

src/frontend/flask_app/static/js/dxf_recipe_wizard.js

@@ -6,6 +6,7 @@
 function dxfRecipeWizard(taskId, csrf, msgs) {
   // Colori overlay per ruolo, uguali a vision_execute.js (reference, roi, found)
   const ROLE_COLORS = { reference: '#2563eb', found: '#16a34a', roi: '#f59e0b' };
+  const VALUE_UNITS = { 'dxf.points_in_pct': '%', 'dxf.distance_avg': 'mm', 'dxf.distance_min': 'mm', 'dxf.distance_max': 'mm' }; // #104
   const VALUE_KEYS = ['dxf.points_in_pct', 'dxf.distance_avg', 'dxf.distance_min', 'dxf.distance_max'];
 
   return {
@@ -20,7 +21,15 @@ function dxfRecipeWizard(taskId, csrf, msgs) {
     imageFile: null,       // immagine caricata o acquisita
     imageName: '',
     imageSrc: '',
+    imagePx: null,         // #102: {w, h} in pixel, letto dall'<img> dell'anteprima
+    imageBroken: false,    // #102: il browser non sa mostrare il formato (il file resta valido per l'invio)
+    calPxMm: null,         // #102: px/mm della calibrazione della stazione
     dxfFile: null,
+    dxfPreview: null,      // #101: risposta di /dxf-preview {contorni, bbox, larghezza_mm, altezza_mm, entita, punti}
+    dxfPreviewBusy: false,
+    dxfPreviewError: '',
+    _dxfPreviewSeq: 0,     // #101: una risposta arrivata dopo un cambio di file si scarta
+    mmPx: '',              // #98: mm/px a mano (immagine da file), stringa con virgola o punto
     bandMm: 0.1,
     minPointsPct: 95,
     dark: true,            // spuntato = pezzo scuro su fondo chiaro (controluce)
@@ -29,10 +38,112 @@ function dxfRecipeWizard(taskId, csrf, msgs) {
     error: '',
     notice: '',
     result: null,          // corpo B3 {result, saved, recipe_dir, outputs}
+    imageSource: '',       // #104: '' | 'file' | 'camera'; il campo mm/px vale solo per 'file'
+    tested: false,         // #104: true dopo una Prova (anche fallita): mostra la sezione del risultato
+    zoom: 1,               // #104: scala dell'immagine di prova (1 = pixel nativi)
+    fitZoom: 1,            // #104: zoom di Adatta (sotto o pari a questo il viewport segue l'immagine)
+    panning: false,        // #104: trascinamento in corso
+    _pan: null,            // #104: {x, y, left, top} al pointerdown
+    resPx: null,           // #104: {w, h} in pixel dell'immagine di prova (per la dimensione del wrapper)
+    runPxPerMm: null,      // #104: scala usata nell'ultima Prova (null = calibrazione stazione)
+    runBandMm: null,       // #104: banda usata nell'ultima Prova
+    runMinPointsPct: null, // #104: soglia usata nell'ultima Prova
+    existing: null,        // #105: risposta di /source (ricetta DXF gia' salvata sul task); null = nessuna
+    existingInfo: false,   // #105: «Ricetta esistente caricata...» dopo aver compilato il wizard
+    existingWarn: '',      // #105: avviso (immagine non salvata, file illeggibili)
+    dxfFromRecipe: false,  // #105: il DXF viene dalla ricetta (l'<input type=file> non puo' mostrarne il nome)
+    _existingApplied: false, // #105: il wizard e' gia' stato compilato dalla ricetta (non sovrascrivere le modifiche)
+    _existingReady: null,  // #105: promessa della prima lettura di /source
+    _srcSeq: 0,            // #105: una risposta di /source arrivata dopo una lettura piu' recente si scarta
+    _dxfPickSeq: 0,        // #105: sale a ogni scelta manuale del DXF; i file della ricetta arrivati dopo si scartano
+    _imgPickSeq: 0,        // #105: idem per l'immagine (_setImage)
+
+    // #105: all'avvio legge se il task ha gia' una ricetta da DXF (serve per l'etichetta del bottone)
+    init() {
+      if (this.taskId) this._existingReady = this.loadExisting();
+    },
 
     async toggle() {
       this.open = !this.open;
-      if (this.open && !this.stations.length) await this.loadStations();
+      if (this.open) {
+        this.openExisting(); // #105: compila il wizard dalla ricetta esistente, in parallelo alle stazioni
+        if (!this.stations.length) await this.loadStations();
+      }
+    },
+
+    // #105: GET /source -> this.existing (null se 404 o errore)
+    async loadExisting() {
+      const seq = ++this._srcSeq;
+      let found = null;
+      try {
+        const resp = await fetch(`/maker/api/vision/tasks/${this.taskId}/recipe/dxf-compare/source`);
+        if (resp.ok) {
+          const body = await resp.json().catch(() => null);
+          if (body && typeof body === 'object' && !body.error) found = body;
+        }
+      } catch (e) { console.error('dxfRecipeWizard source', e); }
+      if (seq !== this._srcSeq) return; // lettura piu' recente in corso
+      this.existing = found;
+    },
+
+    // #105: all'apertura, una sola volta, riempie il wizard con la ricetta esistente
+    async openExisting() {
+      if (this._existingReady) await this._existingReady;
+      if (!this.existing || this._existingApplied) return;
+      await this.applyExisting();
+    },
+
+    // #105: mm/px da px/mm, fino a 6 cifre significative e virgola decimale; '' se non valido
+    _mmPxFrom(pxPerMm) {
+      const v = Number(pxPerMm);
+      if (!Number.isFinite(v) || v <= 0) return '';
+      return String(Number((1 / v).toPrecision(6))).replace('.', ',');
+    },
+
+    // #105: un file della cartella ricetta -> File; null se assente o illeggibile (in quel caso avvisa)
+    async _fetchRecipeFile(name) {
+      try {
+        const resp = await fetch(`/maker/api/vision/tasks/${this.taskId}/recipe/files/${encodeURIComponent(name)}`);
+        if (!resp.ok) throw new Error('HTTP ' + resp.status);
+        const blob = await resp.blob();
+        return new File([blob], name, { type: blob.type || '' });
+      } catch (e) {
+        console.error('dxfRecipeWizard file', name, e);
+        this.existingWarn = this.msgs.existingFilesFailed || 'Cannot read the recipe files';
+        return null;
+      }
+    },
+
+    // #105: valori salvati nei campi, poi DXF e immagine di riferimento dalla cartella ricetta
+    async applyExisting() {
+      const e = this.existing;
+      if (!e) return;
+      this._existingApplied = true;
+      this.error = '';
+      this.notice = '';
+      this.existingWarn = '';
+      const band = Number(e.band_mm), pct = Number(e.min_points_pct);
+      if (Number.isFinite(band) && band > 0) this.bandMm = band;
+      if (Number.isFinite(pct) && pct > 0) this.minPointsPct = pct;
+      this.dark = e.polarity === 'dark';
+      const mm = this._mmPxFrom(e.px_per_mm);
+      if (mm) this.mmPx = mm; // il campo compare quando l'immagine e' da file
+      this.existingInfo = true;
+      // Sequenze lette prima di scaricare: se l'utente sceglie un file a mano nel frattempo, vince lui
+      const dxfSeq = this._dxfPickSeq, imgSeq = this._imgPickSeq;
+      const [dxf, img] = await Promise.all([
+        e.dxf ? this._fetchRecipeFile(e.dxf) : null,
+        e.image ? this._fetchRecipeFile(e.image) : null,
+      ]);
+      if (dxf && dxfSeq === this._dxfPickSeq) {
+        this.dxfFile = dxf;
+        this.dxfFromRecipe = true;
+        this.result = null;
+        this.tested = false;
+        this.loadDxfPreview();
+      }
+      if (img && imgSeq === this._imgPickSeq) this._setImage(img, 'file'); // 'file': il campo mm/px compare gia' compilato
+      if (!e.image && !this.existingWarn) this.existingWarn = this.msgs.noReferenceImage || 'Reference image not saved';
     },
 
     async loadStations() {
@@ -49,33 +160,144 @@ function dxfRecipeWizard(taskId, csrf, msgs) {
 
     // Cambio stazione: rilegge lo stato di calibrazione dall'acquisitore
     async onStation() {
-      this.calState = ''; this.calLabel = ''; this.calUrl = '';
+      this.calState = ''; this.calLabel = ''; this.calUrl = ''; this.calPxMm = null;
       this.result = null;
+      this.tested = false; // #104
       if (!this.stationId) return;
       const r = await fetchStationCalibration(this.stationId);
       this.calState = r.state || 'unreachable';
       this.calUrl = r.calibration_url || '';
-      if (this.calState === 'calibrated') this.calLabel = formatCalibration(r.calibration || {});
+      if (this.calState === 'calibrated') {
+        this.calLabel = formatCalibration(r.calibration || {});
+        const c = Number((r.calibration || {}).px_per_mm); // #102: scala per il campo in mm dell'anteprima
+        this.calPxMm = Number.isFinite(c) && c > 0 ? c : null;
+      }
     },
 
     get calibrated() { return this.calState === 'calibrated'; },
+    // #98: mm/px inserito a mano -> px/mm; null se vuoto o fuori da 0.00001..100 (limiti di /camera/calibrazioni/manuale, #95)
+    get manualPxMm() {
+      const raw = String(this.mmPx || '').trim().replace(',', '.');
+      if (!raw) return null;
+      const v = Number(raw);
+      if (!Number.isFinite(v) || v < 0.00001 || v > 100) return null;
+      return 1 / v;
+    },
+    // #98: compilato ma non valido -> errore in pagina
+    get mmPxInvalid() { return String(this.mmPx || '').trim() !== '' && this.manualPxMm === null; },
+    // #104: la scala a mano vale solo per un'immagine da file; con la camera vale la calibrazione della stazione
+    get useManualScale() { return this.imageSource === 'file' && this.manualPxMm !== null; },
     get canRun() {
-      return !!(this.stationId && this.calibrated && this.imageFile && this.dxfFile) && !this.busy;
+      // #98: la scala a mano sostituisce la calibrazione della stazione (#104: solo per immagini da file)
+      return !!(this.stationId && (this.calibrated || this.useManualScale) && this.imageFile && this.dxfFile) && !this.busy;
     },
 
-    _setImage(file) {
+    _setImage(file, source) {
       if (this.imageSrc) URL.revokeObjectURL(this.imageSrc);
-      this.imageFile = file;
+      // #102: con file null (immagine tolta) si azzera anche l'anteprima
-      this.imageName = file.name || '';
+      this.imageFile = file || null;
-      this.imageSrc = URL.createObjectURL(file);
+      this.imageName = (file && file.name) || '';
+      this.imageSrc = file ? URL.createObjectURL(file) : '';
+      this.imagePx = null;
+      this.imageBroken = false;
       this.result = null;
+      this.tested = false; // #104
+      this.resPx = null; // #104
+      this.imageSource = file ? (source || '') : ''; // #104
+      this._imgPickSeq++; // #105: una scelta piu' recente batte i file della ricetta ancora in arrivo
+    },
+
+    // #102: l'<img> dell'anteprima e' caricata: legge i pixel; se non si carica il formato non e' mostrabile
+    onImagePreviewLoad(el) {
+      this.imageBroken = false;
+      this.imagePx = el && el.naturalWidth ? { w: el.naturalWidth, h: el.naturalHeight } : null;
+    },
+    onImagePreviewError() {
+      this.imageBroken = !!this.imageSrc;
+      this.imagePx = null;
+    },
+    // #102: nome usato dal template (stesso valore dell'URL gia' usato per l'overlay dei risultati)
+    get imagePreviewUrl() { return this.imageSrc; },
+    // #102: «W × H px · campo ≈ L × H mm»; scala = mm/px a mano se valido, altrimenti calibrazione della stazione
+    get imagePreviewSummary() {
+      const p = this.imagePx;
+      if (!p) return '';
+      const lang = document.documentElement.lang || 'it';
+      const f = (v, d) => Number(v).toLocaleString(lang, { minimumFractionDigits: d, maximumFractionDigits: d });
+      let text = `${f(p.w, 0)} × ${f(p.h, 0)} px`;
+      const pxMm = this.useManualScale ? this.manualPxMm : (this.calibrated ? this.calPxMm : null); // #104
+      if (pxMm) text += ` · ${this.msgs.imageField || 'field'} ≈ ${f(p.w / pxMm, 2)} × ${f(p.h / pxMm, 2)} mm`;
+      return text;
     },
 
     onImage(ev) {
       const f = ev.target.files && ev.target.files[0];
-      if (f) this._setImage(f);
+      if (f) this._setImage(f, 'file'); // #104
+    },
+    onDxf(ev) {
+      this.dxfFile = (ev.target.files && ev.target.files[0]) || null;
+      this._dxfPickSeq++; // #105: scelta a mano: il DXF della ricetta in arrivo si scarta
+      this.dxfFromRecipe = false; // #105
+      this.result = null;
+      this.tested = false; // #104
+      this.loadDxfPreview(); // #101: anteprima appena si sceglie il file
+    },
+
+    // #101: legge il DXF sul vision worker (via Flask e backend) e ne mostra i contorni
+    async loadDxfPreview() {
+      const seq = ++this._dxfPreviewSeq;
+      this.dxfPreview = null;
+      this.dxfPreviewError = '';
+      this.dxfPreviewBusy = false;
+      if (!this.dxfFile) return; // file tolto: tutto azzerato
+      this.dxfPreviewBusy = true;
+      try {
+        const fd = new FormData();
+        fd.append('dxf', this.dxfFile, this.dxfFile.name);
+        const resp = await fetch('/maker/api/vision/dxf-preview', {
+          method: 'POST', headers: { 'X-CSRFToken': this._csrf() }, body: fd,
+        });
+        const body = await resp.json().catch(() => ({}));
+        if (seq !== this._dxfPreviewSeq) return; // file cambiato nel frattempo
+        if (!resp.ok || body.error) this.dxfPreviewError = this._errorText(body);
+        else this.dxfPreview = body;
+      } catch (e) {
+        if (seq !== this._dxfPreviewSeq) return;
+        this.dxfPreviewError = this.msgs.requestFailed || String(e);
+      }
+      if (seq === this._dxfPreviewSeq) this.dxfPreviewBusy = false;
+    },
+
+    // #101: una stringa `points` per ogni contorno, per <polyline>
+    dxfPreviewPaths() {
+      const contorni = (this.dxfPreview && this.dxfPreview.contorni) || [];
+      return contorni.filter(c => c && c.length > 1).map(c => c.map(p => p[0] + ',' + p[1]).join(' '));
+    },
+
+    // #101: tutti i contorni in un solo attributo `d` ("M x y L x y ..."): x-for non funziona dentro <svg>
+    dxfPreviewD() {
+      const contorni = (this.dxfPreview && this.dxfPreview.contorni) || [];
+      return contorni.filter(c => c && c.length > 1)
+        .map(c => c.map((p, i) => (i ? 'L ' : 'M ') + p[0] + ' ' + p[1]).join(' ')).join(' ');
+    },
+
+    // #101: viewBox sul bbox con margine 5% (minimo 0.5 mm per lato)
+    dxfPreviewViewBox() {
+      const b = this.dxfPreview && this.dxfPreview.bbox;
+      if (!b) return '0 0 1 1';
+      const w = b.xmax - b.xmin, h = b.ymax - b.ymin;
+      const m = Math.max(0.5, 0.05 * Math.max(w, h));
+      return [b.xmin - m, b.ymin - m, w + 2 * m, h + 2 * m].map(v => +v.toFixed(3)).join(' ');
+    },
+
+    // #101: «L × H mm · N entità», decimale con virgola (2 decimali) secondo la lingua pagina
+    get dxfPreviewSummary() {
+      const d = this.dxfPreview;
+      if (!d) return '';
+      const f = v => Number(v).toLocaleString(document.documentElement.lang || 'it',
+        { minimumFractionDigits: 2, maximumFractionDigits: 2 });
+      return `${f(d.larghezza_mm)} × ${f(d.altezza_mm)} mm · ${d.entita} ${this.msgs.dxfEntities || 'entities'}`;
     },
-    onDxf(ev) { this.dxfFile = (ev.target.files && ev.target.files[0]) || null; this.result = null; },
 
     // Frame dalla camera della stazione scelta
     async grab() {
@@ -91,7 +313,7 @@ function dxfRecipeWizard(taskId, csrf, msgs) {
           this.error = body.detail || this.msgs.requestFailed || 'Error';
         } else {
           const blob = await resp.blob();
-          this._setImage(new File([blob], 'camera.png', { type: blob.type || 'image/png' }));
+          this._setImage(new File([blob], 'camera.png', { type: blob.type || 'image/png' }), 'camera'); // #104
         }
       } catch (e) {
         this.error = this.msgs.requestFailed || String(e);
@@ -115,11 +337,17 @@ function dxfRecipeWizard(taskId, csrf, msgs) {
       this.busy = true;
       this.error = '';
       this.notice = '';
+      // #104: parametri usati, mostrati accanto ai risultati
+      this.runPxPerMm = this.useManualScale ? this.manualPxMm : (this.calibrated ? this.calPxMm : null);
+      this.runBandMm = this.bandMm;
+      this.runMinPointsPct = this.minPointsPct;
       try {
         const fd = new FormData();
         fd.append('image', this.imageFile, this.imageFile.name || 'capture.png');
         fd.append('dxf', this.dxfFile, this.dxfFile.name);
         fd.append('station_id', this.stationId);
+        // #98: scala a mano; il backend la preferisce alla calibrazione della stazione (#104: solo con immagine da file)
+        if (this.useManualScale) fd.append('px_per_mm', String(this.manualPxMm));
         fd.append('band_mm', String(this.bandMm));
         fd.append('min_points_pct', String(this.minPointsPct));
         fd.append('polarity', this.dark ? 'dark' : 'light');
@@ -137,18 +365,116 @@ function dxfRecipeWizard(taskId, csrf, msgs) {
             this.notice = this.msgs.saved || 'Saved';
             // Il componente visionRecipe ricarica cartella, file e uscite delle quote
             this.$dispatch('dxf-recipe-saved', { taskId: this.taskId });
+            // #105: il task ha ora una ricetta (etichetta «Modifica»); il wizard e' gia' allineato, non si ricompila
+            this._existingApplied = true;
+            this.existingInfo = false;
+            this.existingWarn = ''; // #105: l'immagine di riferimento ora e' salvata con la ricetta
+            await this.loadExisting();
           }
         }
       } catch (e) {
         this.error = this.msgs.requestFailed || String(e);
       }
       this.busy = false;
+      // #104: la sezione del risultato compare anche con Prova fallita (immagine a sinistra, errore a destra)
+      this.tested = true;
+      this.$nextTick(() => this.fit());
     },
 
     // Le quattro uscite del confronto, nell'ordine fisso
     get values() {
       const out = (this.result && this.result.result && this.result.result.outputs) || {};
-      return VALUE_KEYS.map(k => ({ key: k, value: out[k] }));
+      return VALUE_KEYS.map(k => ({ key: k, value: out[k], label: this._valueLabel(k), unit: VALUE_UNITS[k] })); // #104
+    },
+
+    // #104: etichette leggibili (testi passati da msgs), chiave grezza come ripiego
+    _valueLabel(k) {
+      const m = { 'dxf.points_in_pct': this.msgs.pointsInBand, 'dxf.distance_avg': this.msgs.distAvg,
+        'dxf.distance_min': this.msgs.distMin, 'dxf.distance_max': this.msgs.distMax };
+      return m[k] || k;
+    },
+
+    // #104: esito della ricetta sul riferimento: pass / warning / fail (src/vision/runner.py); altro = valore grezzo
+    get outcome() { return (this.result && this.result.result && this.result.result.outcome) || ''; },
+    get outcomeLabel() {
+      const m = { pass: this.msgs.outcomePass, warning: this.msgs.outcomeWarning, fail: this.msgs.outcomeFail };
+      return m[this.outcome] || this.outcome;
+    },
+    get outcomeClass() {
+      return { pass: 'text-emerald-600', warning: 'text-amber-600', fail: 'text-red-500' }[this.outcome] || 'text-[var(--text-muted)]';
+    },
+    // #104: scala usata nell'ultima Prova, con la fonte
+    get scaleSummary() {
+      if (!this.runPxPerMm) return this.msgs.scaleStation || 'station calibration';
+      const lang = document.documentElement.lang || 'it';
+      const mm = (1 / this.runPxPerMm).toLocaleString(lang, { maximumFractionDigits: 6 });
+      return `${mm} mm/px (${this.imageSource === 'file' ? (this.msgs.scaleManual || 'manual') : (this.msgs.scaleStation || 'station calibration')})`;
+    },
+
+    // #104: zoom dell'immagine di prova. Il wrapper e' largo naturalWidth*zoom; il canvas resta in pixel immagine e lo scala il CSS
+    get zoomPct() { return Math.round(this.zoom * 100) + ' %'; },
+    get zoomW() { return this.resPx ? this.resPx.w * this.zoom : 0; },
+    get zoomH() { return this.resPx ? this.resPx.h * this.zoom : 0; },
+    // #104: altezza massima del viewport = min(70vh, 520px)
+    _maxVpH() { return Math.min(0.7 * (typeof window !== 'undefined' && window.innerHeight ? window.innerHeight : 800), 520); },
+    // #104: con zoom <= Adatta il viewport e' alto come l'immagine scalata (min 200px), altrimenti al massimo
+    get vpHeight() {
+      const max = this._maxVpH();
+      if (!this.resPx || this.zoom > this.fitZoom * 1.0001) return max;
+      return Math.min(max, Math.max(200, this.zoomH));
+    },
+    // #104: l'immagine e' piu' grande dello spazio: si puo' trascinare
+    get canPan() { return !!this.resPx && this.zoom > this.fitZoom * 1.0001; },
+    get panCursor() { return this.canPan ? (this.panning ? 'grabbing' : 'grab') : 'default'; },
+    // #104: pan col puntatore (mouse e touch): scroll del viewport di quanto si muove il puntatore
+    onPanDown(ev) {
+      const vp = this.$refs.viewport;
+      if (!vp || (ev.pointerType === 'mouse' && ev.button)) return;
+      // #104: senza preventDefault Chromium manda pointercancel al primo movimento del mouse e il pan si ferma
+      if (ev.preventDefault) ev.preventDefault();
+      this._pan = { x: ev.clientX, y: ev.clientY, left: vp.scrollLeft, top: vp.scrollTop };
+      this.panning = true;
+      try { vp.setPointerCapture(ev.pointerId); } catch (e) { /* puntatore gia' rilasciato */ }
+    },
+    onPanMove(ev) {
+      const vp = this.$refs.viewport;
+      if (!this._pan || !vp) return;
+      vp.scrollLeft = this._pan.left - (ev.clientX - this._pan.x);
+      vp.scrollTop = this._pan.top - (ev.clientY - this._pan.y);
+    },
+    onPanEnd() { this._pan = null; this.panning = false; },
+    zoomBy(f) {
+      const vp = this.$refs.viewport;
+      const old = this.zoom;
+      const z = Math.min(8, Math.max(0.05, old * f));
+      if (z === old) return;
+      // centro visibile invariato: coordinate immagine del centro prima, scroll dopo il nuovo layout
+      let cx = 0, cy = 0;
+      if (vp) { cx = (vp.scrollLeft + vp.clientWidth / 2) / old; cy = (vp.scrollTop + vp.clientHeight / 2) / old; }
+      this.zoom = z;
+      if (vp) this.$nextTick(() => { vp.scrollLeft = cx * z - vp.clientWidth / 2; vp.scrollTop = cy * z - vp.clientHeight / 2; });
+    },
+    // #104: Fit = tutta l'immagine nel viewport (altezza massima, non quella corrente che segue l'immagine)
+    fit() {
+      const vp = this.$refs.viewport, img = this.$refs.img;
+      if (!vp || !img || !img.naturalWidth || !vp.clientWidth) return;
+      const z = Math.min(8, Math.max(0.05, Math.min(vp.clientWidth / img.naturalWidth, this._maxVpH() / img.naturalHeight)));
+      this.zoom = z;
+      this.fitZoom = z;
+      vp.scrollLeft = 0; vp.scrollTop = 0;
+    },
+    // #104: Ctrl+rotella = zoom
+    onWheel(ev) {
+      if (!ev.ctrlKey) return;
+      ev.preventDefault();
+      this.zoomBy(ev.deltaY < 0 ? 1.25 : 1 / 1.25);
+    },
+    // #104: load dell'immagine di prova: dimensioni, overlay e adattamento allo spazio
+    onResultImgLoad() {
+      const img = this.$refs.img;
+      this.resPx = img && img.naturalWidth ? { w: img.naturalWidth, h: img.naturalHeight } : null;
+      this.drawOverlay();
+      this.$nextTick(() => this.fit());
     },
 
     fmt(v) {

src/frontend/flask_app/static/js/image_to_png.js

@@ -0,0 +1,38 @@
+/**
+ * image_to_png.js - #107: converte nel browser le immagini che il backend non ammette (es. BMP) in PNG.
+ *
+ * Cosa fa: tmfNeedsPng(type) dice se il MIME e' un'immagine fuori da PNG/JPEG/GIF/WebP;
+ *          tmfImageToPng(file) la ridisegna su canvas e ritorna un File PNG (null se illeggibile, es. TIFF).
+ * Come si usa: await tmfImageToPng(file) prima del ritaglio e del caricamento.
+ * Dipende da: createImageBitmap e canvas del browser (non servono nei test: il caso "nessuna conversione" e' puro).
+ */
+// #107: tipi che il backend ammette gia': non vanno convertiti
+const TMF_PNG_PASSTHROUGH = ['image/png', 'image/jpeg', 'image/jpg', 'image/gif', 'image/webp'];
+
+// #107: true per un'immagine (image/*) non ammessa dal backend, es. image/bmp
+function tmfNeedsPng(type) {
+  return typeof type === 'string' && type.indexOf('image/') === 0 && TMF_PNG_PASSTHROUGH.indexOf(type) === -1;
+}
+
+// #107: converte in PNG con canvas; ritorna il file invariato se non serve, null se il browser non sa decodificarlo
+async function tmfImageToPng(file) {
+  if (!file || !tmfNeedsPng(file.type)) return file;
+  try {
+    const bitmap = await createImageBitmap(file);
+    const canvas = document.createElement('canvas');
+    canvas.width = bitmap.width;
+    canvas.height = bitmap.height;
+    canvas.getContext('2d').drawImage(bitmap, 0, 0);
+    if (bitmap.close) bitmap.close();
+    const blob = await new Promise(function (resolve) { canvas.toBlob(resolve, 'image/png'); });
+    if (!blob) return null;
+    const base = (file.name || 'immagine').replace(/\.[^.]+$/, '');
+    return new File([blob], base + '.png', { type: 'image/png' });
+  } catch (err) {
+    // #107: formato non decodificabile dal browser (es. TIFF)
+    return null;
+  }
+}
+
+// #107: export per il test node (nel browser module non esiste)
+if (typeof module !== 'undefined') module.exports = { tmfNeedsPng, tmfImageToPng };

src/frontend/flask_app/templates/maker/recipe_editor.html

@@ -504,6 +504,7 @@
 
 {% block extra_js %}
 <script src="{{ url_for('static', filename='js/image-crop.js') }}"></script>
+<script src="{{ url_for('static', filename='js/image_to_png.js') }}"></script>{# #107 #}
 <script>
 // #56: stringhe e percorsi per il ritaglio prima dell'upload
 ImageCrop.configure({
@@ -686,6 +687,13 @@ function recipeEditor() {
     async uploadFile(file) {
       if (!file) return;
 
+      // #107: BMP e simili (leggibili dal browser, non dal backend) diventano PNG prima dei controlli
+      file = await tmfImageToPng(file);
+      if (!file) {
+        this.errorMessage = {{ _("Formato immagine non leggibile. Usa PNG, JPG o PDF.")|tojson }};
+        return;
+      }
+
       // Validate file type
       const allowed = ['image/jpeg', 'image/png', 'image/gif', 'image/webp', 'application/pdf'];
       if (!allowed.includes(file.type)) {

src/frontend/flask_app/templates/maker/task_editor.html

@@ -662,11 +662,16 @@
                 <!-- ========== Crea ricetta da DXF (#83): solo dxf_compare ========== -->
                 <template x-if="task.task_type === 'dxf_compare'">
                   <div class="mt-4 pt-3 border-t border-[var(--border-color)]"
-                       x-data="dxfRecipeWizard(task.id, () => csrfToken(), {{ {'requestFailed': _('Richiesta non riuscita'), 'saved': _('Ricetta salvata')}|tojson_attr }})">
+                       x-data="dxfRecipeWizard(task.id, () => csrfToken(), {{ {'requestFailed': _('Richiesta non riuscita'), 'saved': _('Ricetta salvata'), 'dxfEntities': _('entità'), 'imageField': _('campo'), 'pointsInBand': _('Punti in banda'), 'distAvg': _('Distanza media'), 'distMin': _('Distanza minima'), 'distMax': _('Distanza massima'), 'outcomePass': _('Conforme'), 'outcomeWarning': _('Con avvisi'), 'outcomeFail': _('Non conforme'), 'scaleManual': _('mm/px a mano'), 'scaleStation': _('calibrazione stazione'), 'createLabel': _('Crea ricetta da DXF'), 'editLabel': _('Modifica ricetta da DXF'), 'noReferenceImage': _('Immagine di riferimento non salvata (ricetta creata prima): acquisiscila o caricala'), 'existingFilesFailed': _('Impossibile leggere i file della ricetta esistente')}|tojson_attr }})">{# #104: etichette del risultato della Prova; #105: etichette del bottone e avvisi della ricetta esistente #}
-                    <button type="button" class="btn btn-secondary text-xs" @click="toggle()">
+                    {# #105: «Modifica ricetta da DXF» se il task ha gia' una ricetta da DXF #}
+                    <button type="button" class="btn btn-secondary text-xs" @click="toggle()"
+                            x-text="existing ? msgs.editLabel : msgs.createLabel">
                       {{ _('Crea ricetta da DXF') }}
                     </button>
                     <div x-show="open" x-cloak class="mt-3 space-y-3">
+                      <!-- #105: ricetta esistente caricata nel wizard -->
+                      <p x-show="existingInfo" class="text-xs text-emerald-600">{{ _('Ricetta esistente caricata: Prova e poi Salva ricetta per sostituirla') }}</p>
+                      <p x-show="existingWarn" class="text-xs text-amber-600" x-text="existingWarn"></p>
                       <!-- Stazione -->
                       <div>
                         <label class="tmf-label text-xs">{{ _('Stazione') }}</label>
@@ -680,14 +685,14 @@
                         <p x-show="stationId && calibrated" class="mt-1 text-xs text-emerald-600">
                           {{ _('Calibrazione') }}: <span x-text="calLabel"></span>
                         </p>
-                        <p x-show="stationId && calState && !calibrated" class="mt-1 text-xs text-amber-600">
+                        <p x-show="stationId && calState && !calibrated && !useManualScale" class="mt-1 text-xs text-amber-600">{# #98: nascosto con mm/px valido (#104: solo per immagine da file) #}
                           <span x-text="calState === 'uncalibrated' ? {{ _('Stazione non calibrata: calibrala prima di creare la ricetta.')|tojson_attr }} : {{ _('Acquisitore non raggiungibile: impossibile leggere la calibrazione.')|tojson_attr }}"></span>
                           <a :href="calUrl" target="_blank" rel="noopener" x-show="calUrl"
                              class="font-medium text-primary hover:underline">{{ _('Calibra') }}</a>
                           <span class="text-[var(--text-muted)]">({{ _('oppure vedi la pagina Stazioni') }})</span>
                         </p>
                       </div>
-                      <!-- Immagine: camera o file -->
+                      <!-- Immagine: camera o file. #104: prima le scelte, poi le anteprime affiancate -->
                       <div class="grid grid-cols-1 sm:grid-cols-2 gap-3">
                         <div>
                           <label class="tmf-label text-xs">{{ _('Immagine del pezzo') }}</label>
@@ -700,10 +705,48 @@
                             </label>
                           </div>
                           <p class="mt-1 text-xs text-[var(--text-muted)]" x-text="imageName"></p>
+                          <!-- #98: mm/px a mano, #104: solo per un'immagine da file; sostituisce la calibrazione della stazione -->
+                          <div x-show="imageSource === 'file'" class="mt-2">
+                            <label class="tmf-label text-xs">{{ _('mm/px (immagine da file)') }}</label>
+                            <input type="text" inputmode="decimal" class="tmf-input text-xs" x-model="mmPx" placeholder="0,01406">
+                            <p x-show="manualPxMm !== null" class="mt-1 text-xs text-emerald-600">
+                              = <span x-text="fmt(manualPxMm)"></span> px/mm
+                            </p>
+                            <p x-show="mmPxInvalid" class="mt-1 text-xs text-amber-600">{{ _('mm/px non valido') }}</p>
+                            <p class="mt-1 text-xs text-[var(--text-muted)]">{{ _('Se compilato sostituisce la calibrazione della stazione; la scala resta salvata nella ricetta.') }}</p>
+                          </div>
                         </div>
                         <div>
                           <label class="tmf-label text-xs">{{ _('Disegno (.dxf)') }}</label>
                           <input type="file" accept=".dxf" class="tmf-input text-xs" @change="onDxf($event)">
+                          <!-- #105: DXF preso dalla ricetta esistente (l'input file non puo' mostrarne il nome) -->
+                          <p x-show="dxfFromRecipe && dxfFile" class="mt-1 text-xs text-[var(--text-muted)]" x-text="dxfFile ? dxfFile.name : ''"></p>
+                          <!-- #101: lettura del disegno appena scelto il .dxf -->
+                          <p x-show="dxfPreviewBusy" class="mt-1 text-xs text-[var(--text-muted)]">{{ _('Lettura DXF…') }}</p>
+                          <p x-show="dxfPreviewError" class="mt-1 text-xs text-red-500" x-text="dxfPreviewError"></p>
+                        </div>
+                      </div>
+                      <!-- #104: anteprime sotto le scelte, scatole alte uguali (240px) per stare allineate -->
+                      <div class="grid grid-cols-1 sm:grid-cols-2 gap-3 items-start">
+                        <div x-show="imagePreviewUrl">
+                          <!-- #102: anteprima dell'immagine -->
+                          <img x-show="!imageBroken" :src="imagePreviewUrl" alt=""
+                               @load="onImagePreviewLoad($event.target)" @error="onImagePreviewError()"
+                               class="block w-full rounded border border-[var(--border-color)]"
+                               style="height: 240px; object-fit: contain; background: var(--bg-primary);">
+                          <p x-show="imageBroken" class="text-xs text-amber-600">{{ _('Anteprima non disponibile per questo formato') }}</p>
+                          <p x-show="imagePreviewSummary" class="mt-1 text-xs text-[var(--text-muted)]" x-text="imagePreviewSummary"></p>
+                        </div>
+                        <div x-show="dxfPreview" class="sm:col-start-2">{# #104: resta a destra anche senza anteprima immagine #}
+                          <svg x-bind:view-box.camel="dxfPreviewViewBox()" preserveAspectRatio="xMidYMid meet"
+                               class="block w-full rounded border border-[var(--border-color)]"
+                               style="height: 240px; background: var(--bg-primary);">
+                            <!-- #101: un solo path (x-for/template non funziona nel namespace SVG); view-box.camel perche' il parser HTML abbassa viewBox -->
+                            <path :d="dxfPreviewD()" fill="none" stroke="var(--color-primary, #2563eb)"
+                                  stroke-width="1.5" vector-effect="non-scaling-stroke"
+                                  stroke-linejoin="round"></path>
+                          </svg>
+                          <p class="mt-1 text-xs text-[var(--text-muted)]" x-text="dxfPreviewSummary"></p>
                         </div>
                       </div>
                       <!-- Pochi parametri -->
@@ -728,21 +771,57 @@
                         <button type="button" class="btn btn-primary text-xs" @click="run(true)"
                                 :disabled="!canRun || !result">{{ _('Salva ricetta') }}</button>
                       </div>
-                      <p x-show="error" class="text-xs text-red-500" x-text="error"></p>
+                      <!-- #104: errore di acquisizione prima di una Prova (dopo, sta nella colonna dei dati) -->
-                      <p x-show="notice" class="text-xs text-emerald-600" x-text="notice"></p>
+                      <p x-show="error && !tested" class="text-xs text-red-500" x-text="error"></p>
-                      <!-- Anteprima con overlay e quattro valori -->
+                      <!-- #104: risultato della Prova su due colonne: immagine con zoom a sinistra, dati ed errori a destra -->
-                      <div x-show="imageSrc" class="relative">
+                      <div x-show="tested" class="grid grid-cols-1 sm:grid-cols-2 gap-3 items-start">{# #104: risultati a destra gia' da 640px, come le altre griglie del wizard #}
-                        <img x-ref="img" :src="imageSrc" alt="" class="block w-full rounded border border-[var(--border-color)]"
+                        <div>
-                             @load="drawOverlay()">
+                          <!-- #104: barra zoom in sovrimpressione, fuori dal contenuto scorrevole -->
-                        <canvas x-ref="overlay" class="absolute inset-0 w-full h-full pointer-events-none"></canvas>
+                          <div class="relative">
+                            <div class="absolute top-2 right-2 z-10 flex items-center gap-1 rounded px-1 py-0.5"
+                                 style="background: rgba(0,0,0,.55); color: #fff;">
+                              <button type="button" class="px-1.5 text-xs rounded hover:bg-white/20" @click="zoomBy(1 / 1.25)" title="{{ _('Riduci') }}">&minus;</button>
+                              <button type="button" class="px-1.5 text-xs rounded hover:bg-white/20" @click="zoomBy(1.25)" title="{{ _('Ingrandisci') }}">+</button>
+                              <button type="button" class="px-1.5 text-xs rounded hover:bg-white/20" @click="fit()">{{ _('Adatta') }}</button>
+                              <span class="text-xs px-1" x-text="zoomPct"></span>
+                            </div>
+                            <!-- #104: pan col puntatore (mouse e dito), cursore grab; altezza che segue l'immagine finche' zoom <= Adatta -->
+                            <div x-ref="viewport" @wheel="onWheel($event)"
+                                 @pointerdown="onPanDown($event)" @pointermove="onPanMove($event)"
+                                 @pointerup="onPanEnd()" @pointercancel="onPanEnd()"
+                                 class="rounded border border-[var(--border-color)]"
+                                 :style="'overflow:auto;touch-action:none;user-select:none;background:var(--bg-primary);height:' + vpHeight + 'px;cursor:' + panCursor">
+                            <div class="relative" :style="zoomW ? ('width:' + zoomW + 'px;height:' + zoomH + 'px') : 'width:100%'">
+                              <img x-ref="img" :src="imageSrc" alt="" class="block" draggable="false" style="width: 100%; height: 100%; user-select: none;"
+                                   @load="onResultImgLoad()">
+                              <canvas x-ref="overlay" class="absolute inset-0 w-full h-full pointer-events-none"></canvas>
+                            </div>
+                            </div>
+                          </div>
+                        </div>
+                        <div class="space-y-2">
+                          <p x-show="error" class="text-xs text-red-500" x-text="error"></p>
+                          <p x-show="notice" class="text-xs text-emerald-600" x-text="notice"></p>
+                          <div x-show="result" class="space-y-2">
+                            <p class="text-xs">{{ _('Esito') }}: <span class="font-semibold" :class="outcomeClass" x-text="outcomeLabel"></span></p>
+                            <table class="tmf-table text-xs">
+                              <tbody>
+                                <template x-for="v in values" :key="v.key">
+                                  <tr>
+                                    <td :title="v.key" x-text="v.label"></td>
+                                    <td class="text-right"><span x-text="fmt(v.value)"></span> <span class="text-[var(--text-muted)]" x-text="v.unit"></span></td>
+                                  </tr>
+                                </template>
+                              </tbody>
+                            </table>
+                            <ul class="text-xs text-[var(--text-muted)] space-y-0.5">
+                              <li>{{ _('Scala') }}: <span x-text="scaleSummary"></span></li>
+                              <li>{{ _('Banda ± mm') }}: <span x-text="fmt(runBandMm)"></span></li>
+                              <li>{{ _('Soglia punti in banda %%') }}: <span x-text="fmt(runMinPointsPct)"></span></li>
+                            </ul>
+                          </div>
+                        </div>
                       </div>
-                      <table x-show="result" class="tmf-table text-xs">
-                        <tbody>
-                          <template x-for="v in values" :key="v.key">
-                            <tr><td class="font-mono" x-text="v.key"></td><td class="text-right" x-text="fmt(v.value)"></td></tr>
-                          </template>
-                        </tbody>
-                      </table>
                     </div>
                   </div>
                 </template>
@@ -800,6 +879,8 @@
                          @change="uploadTaskFile(task.id, $event.target.files[0], task); $event.target.value = ''">
                 </label>
               </template>
+              <!-- #107: errore di caricamento anche dentro il riquadro, non solo nel banner in cima -->
+              <p x-show="uploadErrorTask === task.id && errorMessage" x-text="errorMessage" class="text-xs text-red-600 dark:text-red-400 mt-2"></p>
             </div>
 
             <!-- Task Directive / Description (read-only display) -->
@@ -1405,6 +1486,7 @@
 <script>if(typeof pdfjsLib!=='undefined')pdfjsLib.GlobalWorkerOptions.workerSrc='{{ url_for('static', filename='vendor/pdf.worker-3.11.174.min.js') }}';</script>
 <script src="{{ url_for('static', filename='js/annotation-viewer.js') }}?v=6"></script>
 <script src="{{ url_for('static', filename='js/image-crop.js') }}"></script>
+<script src="{{ url_for('static', filename='js/image_to_png.js') }}"></script>{# #107 #}
 <script>
 // #56: stringhe e percorsi per il ritaglio prima dell'upload
 ImageCrop.configure({
@@ -1451,6 +1533,7 @@ function taskEditor() {
     showAddTask: false,
     saving: false,
     errorMessage: '',
+    uploadErrorTask: null, // #107: id del task il cui upload e' fallito (errore mostrato nel riquadro Disegno Tecnico)
     successMessage: '',
 
     // ---- Task CRUD state ----
@@ -2336,14 +2419,24 @@ function taskEditor() {
     async uploadTaskFile(taskId, file, task) {
       if (!file) return;
 
+      // #107: BMP e simili (leggibili dal browser, non dal backend) diventano PNG prima dei controlli
+      file = await tmfImageToPng(file);
+      if (!file) {
+        this.errorMessage = {{ _("Formato immagine non leggibile. Usa PNG, JPG o PDF.")|tojson }};
+        this.uploadErrorTask = taskId;
+        return;
+      }
+
       const allowedTypes = ['image/png', 'image/jpeg', 'image/jpg', 'image/webp', 'application/pdf'];
       if (!allowedTypes.includes(file.type)) {
         this.errorMessage = {{ _("Formato file non supportato. Usa PNG, JPG o PDF.")|tojson }};
+        this.uploadErrorTask = taskId; // #107
         return;
       }
 
       if (file.size > 20 * 1024 * 1024) {
         this.errorMessage = {{ _("File troppo grande. Dimensione massima: 20MB.")|tojson }};
+        this.uploadErrorTask = taskId; // #107
         return;
       }
 
@@ -2353,6 +2446,7 @@ function taskEditor() {
 
       this.saving = true;
       this.errorMessage = '';
+      this.uploadErrorTask = null; // #107: nuovo tentativo, azzera l'errore del riquadro
 
       try {
         // 1. Upload file
@@ -2369,6 +2463,7 @@ function taskEditor() {
         const uploadData = await uploadResp.json();
         if (uploadData.error) {
           this.errorMessage = uploadData.detail || {{ _("Errore durante il caricamento del file")|tojson }};
+          this.uploadErrorTask = taskId; // #107
           this.saving = false;
           return;
         }
@@ -2393,6 +2488,7 @@ function taskEditor() {
         const updateData = await updateResp.json();
         if (updateData.error) {
           this.errorMessage = updateData.detail || {{ _("Errore nel salvataggio del task")|tojson }};
+          this.uploadErrorTask = taskId; // #107
           this.saving = false;
           return;
         }
@@ -2408,6 +2504,7 @@ function taskEditor() {
       } catch (err) {
         console.error('uploadTaskFile error:', err);
         this.errorMessage = {{ _("Errore di connessione al server")|tojson }};
+        this.uploadErrorTask = taskId; // #107
       }
 
       this.saving = false;

src/frontend/flask_app/templates/statistics/dashboard.html

@@ -51,7 +51,9 @@
       <!-- Subtask -->
       <div>
         <label class="block text-xs font-medium text-steel mb-1">{{ _("Punto di misura") }}</label>
+        <!-- #100: il cambio di punto ricarica subito, senza «Applica filtri» -->
         <select x-model="selectedSubtaskId"
+                @change="loadData()"
                 :disabled="subtasks.length === 0"
                 class="w-full rounded-lg border border-[var(--border-color)] bg-[var(--bg-primary)] text-[var(--text-primary)] px-3 py-2 text-sm focus:ring-2 focus:ring-primary focus:border-primary disabled:opacity-50">
           <option value="">{{ _("Tutti i punti") }}</option>
@@ -287,20 +289,52 @@
               </div>
             </div>
           </template>
-          <template x-if="!capability || capability.cp == null">
+          <!-- #100: con «Tutti i punti» tabella con una riga per punto di misura -->
+          <template x-if="!loadedSubtaskId && capabilityAll.length > 0">
+            <div>
+              <table class="w-full text-sm">
+                <thead>
+                  <tr class="text-xs text-steel text-left">
+                    <th class="py-1 font-medium">{{ _("Punto di misura") }}</th>
+                    <th class="py-1 font-medium text-right">n</th>
+                    <th class="py-1 font-medium text-right">Cp</th>
+                    <th class="py-1 font-medium text-right">Cpk</th>
+                  </tr>
+                </thead>
+                <tbody>
+                  <template x-for="row in capabilityAll" :key="row.subtask.id">
+                    <tr class="cursor-pointer hover:bg-[var(--bg-primary)] border-t border-[var(--border-color)]"
+                        @click="selectedSubtaskId = String(row.subtask.id); loadData()">
+                      <td class="py-1.5 pr-2" x-text="'#' + row.subtask.marker_number + ' — ' + row.subtask.description"></td>
+                      <td class="py-1.5 text-right font-mono" x-text="row.data && row.data.n != null ? row.data.n : '—'"></td>
+                      <td class="py-1.5 text-right font-mono font-bold"
+                          :class="row.data && row.data.cp != null ? capabilityColor(row.data.cp) : 'text-steel'"
+                          x-text="row.data && row.data.cp != null ? row.data.cp : '—'"></td>
+                      <td class="py-1.5 text-right font-mono font-bold"
+                          :class="row.data && row.data.cpk != null ? capabilityColor(row.data.cpk) : 'text-steel'"
+                          x-text="row.data && row.data.cpk != null ? row.data.cpk : '—'"></td>
+                    </tr>
+                  </template>
+                </tbody>
+              </table>
+              <p class="text-xs text-steel mt-3">{{ _("Scegli un punto per carta di controllo e istogramma") }}</p>
+            </div>
+          </template>
+          <template x-if="(!capability || capability.cp == null) && (loadedSubtaskId || capabilityAll.length === 0)">
             <p class="text-center text-steel py-8">{{ _("Seleziona un punto di misura per calcolare gli indici") }}</p>
           </template>
         </div>
       </div>
 
       <!-- Row 2: Carta di Controllo -->
-      <div class="bg-[var(--bg-secondary)] rounded-xl border border-[var(--border-color)] p-5 shadow-sm mb-6">
+      <!-- #100: x-show (non x-if) perche' renderCharts() cerca gli id nel DOM; nascosta senza punto -->
+      <div x-show="loadedSubtaskId" class="bg-[var(--bg-secondary)] rounded-xl border border-[var(--border-color)] p-5 shadow-sm mb-6">
         <h2 class="text-sm font-semibold text-steel uppercase tracking-wider mb-4">{{ _("Carta di Controllo") }}</h2>
         <div id="control-chart" style="min-height: 350px;"></div>
       </div>
 
       <!-- Row 3: Istogramma -->
-      <div class="bg-[var(--bg-secondary)] rounded-xl border border-[var(--border-color)] p-5 shadow-sm mb-6">
+      <div x-show="loadedSubtaskId" class="bg-[var(--bg-secondary)] rounded-xl border border-[var(--border-color)] p-5 shadow-sm mb-6">
         <h2 class="text-sm font-semibold text-steel uppercase tracking-wider mb-4">{{ _("Istogramma") }}</h2>
         <div id="histogram-chart" style="min-height: 350px;"></div>
       </div>
@@ -346,6 +380,8 @@ function spcDashboard() {
     subtasks: [],
 
     // Data state
+    loadedSubtaskId: '',  // #100 punto con cui sono stati caricati i dati (i pannelli dipendono da questo)
+    capabilityAll: [],  // #100 con «Tutti i punti»: [{subtask, data}] una riga per punto
     summary: null,
     capability: null,
     controlChart: null,
@@ -408,6 +444,8 @@ function spcDashboard() {
 
     async onRecipeChange() {
       this.selectedSubtaskId = '';
+      this.loadedSubtaskId = '';  // #100
+      this.capabilityAll = [];  // #100
       this.selectedRunId = '';  // #58
       this.runs = [];
       this.subtasks = [];
@@ -459,10 +497,11 @@ function spcDashboard() {
       if (this.selectedRunId) params.set('production_run_id', this.selectedRunId);  // #58
       if (this.dateFrom) params.set('date_from', new Date(this.dateFrom + 'T00:00:00').toISOString());
       if (this.dateTo) params.set('date_to', new Date(this.dateTo + 'T23:59:59.999').toISOString());
+      const requestedSubtaskId = this.selectedSubtaskId;  // #100 punto richiesto da questa chiamata
 
       try {
         // Parallel fetch of all endpoints
-        const [summaryResp, capabilityResp, controlResp, histogramResp] = await Promise.allSettled([
+        const [summaryResp, capabilityResp, controlResp, histogramResp, allResp] = await Promise.allSettled([
           fetch('/statistics/api/summary?' + params.toString()).then(r => r.json()),
           this.selectedSubtaskId
             ? fetch('/statistics/api/capability?' + params.toString()).then(r => r.json())
@@ -473,6 +512,17 @@ function spcDashboard() {
           this.selectedSubtaskId
             ? fetch('/statistics/api/histogram?' + params.toString()).then(r => r.json())
             : Promise.resolve(null),
+          // #100: senza punto scelto, capability di ogni punto della ricetta
+          requestedSubtaskId
+            ? Promise.resolve([])
+            : Promise.all(this.subtasks.map(st => {
+                const p = new URLSearchParams(params.toString());
+                p.set('subtask_id', st.id);
+                return fetch('/statistics/api/capability?' + p.toString())
+                  .then(r => r.json())
+                  .then(d => ({ subtask: st, data: (d && !d.error) ? d : null }))
+                  .catch(() => ({ subtask: st, data: null }));
+              })),
         ]);
 
         // Summary (always available)
@@ -505,6 +555,9 @@ function spcDashboard() {
           this.histogram = null;
         }
 
+        // #100: lista per-punto solo con «Tutti i punti»; con un punto resta il flusso di prima
+        this.capabilityAll = (allResp.status === 'fulfilled' && Array.isArray(allResp.value)) ? allResp.value : [];
+        this.loadedSubtaskId = requestedSubtaskId;
         this.hasData = true;
 
         // Render charts after DOM update
@@ -522,7 +575,7 @@ function spcDashboard() {
 
     renderCharts() {
       // Control chart
-      if (this.controlChart && this.selectedSubtaskId) {
+      if (this.controlChart && this.loadedSubtaskId) {  // #100
         renderControlChart('control-chart', this.controlChart);
       } else {
         const el = document.getElementById('control-chart');
@@ -530,7 +583,7 @@ function spcDashboard() {
       }
 
       // Histogram
-      if (this.histogram && this.selectedSubtaskId) {
+      if (this.histogram && this.loadedSubtaskId) {  // #100
         const tol = this.capability ? {
           utl: this.capability.utl,
           ltl: this.capability.ltl,

src/frontend/flask_app/tests/js/test_dxf_preview.js

@@ -0,0 +1,301 @@
+/**
+ * #101: anteprima DXF del wizard «Crea ricetta da DXF», con plain node.
+ * Copre dxfPreviewPaths, dxfPreviewViewBox, dxfPreviewSummary e lo scarto
+ * di una risposta arrivata dopo un cambio di file.
+ *
+ * Run from src/frontend/flask_app: node tests/js/test_dxf_preview.js
+ */
+'use strict';
+const fs = require('fs');
+const path = require('path');
+
+global.document = { documentElement: { lang: 'it' } };
+const src = fs.readFileSync(
+  path.join(__dirname, '..', '..', 'static', 'js', 'dxf_recipe_wizard.js'), 'utf8',
+);
+eval(src + ';global.dxfRecipeWizard = dxfRecipeWizard;');
+
+let failures = 0;
+function check(label, cond, extra) {
+  if (cond) console.log('ok - ' + label);
+  else { failures++; console.log('FAIL - ' + label + (extra ? ' :: ' + extra : '')); }
+}
+
+const PREVIEW = {
+  contorni: [[[0, -5], [12.3, -5], [12.3, 0], [0, 0], [0, -5]], [[1, -1]]],
+  bbox: { xmin: 0, ymin: -5.1, xmax: 12.3, ymax: 0 },
+  larghezza_mm: 12.3, altezza_mm: 5.1, entita: 2, punti: 6,
+};
+
+(async () => {
+  const w = dxfRecipeWizard(1, () => 'tok', { dxfEntities: 'entità' });
+
+  check('senza anteprima: nessun path', w.dxfPreviewPaths().length === 0);
+  check('senza anteprima: summary vuoto', w.dxfPreviewSummary === '');
+
+  w.dxfPreview = PREVIEW;
+  const paths = w.dxfPreviewPaths();
+  check('un contorno con >1 punti diventa una polyline (quello da 1 punto no)', paths.length === 1);
+  check('formato points', paths[0] === '0,-5 12.3,-5 12.3,0 0,0 0,-5', paths[0]);
+
+  // #101: path unico per <path :d>
+  check('dxfPreviewD', w.dxfPreviewD() === 'M 0 -5 L 12.3 -5 L 12.3 0 L 0 0 L 0 -5', w.dxfPreviewD());
+  w.dxfPreview = null;
+  check('dxfPreviewD vuoto senza anteprima', w.dxfPreviewD() === '');
+  w.dxfPreview = PREVIEW;
+
+  const vb = w.dxfPreviewViewBox().split(' ').map(Number);
+  const m = Math.max(0.5, 0.05 * 12.3);
+  check('viewBox con margine 5%', Math.abs(vb[0] + m) < 1e-3 && Math.abs(vb[2] - (12.3 + 2 * m)) < 1e-3, vb.join(' '));
+
+  // Disegno minuscolo: margine minimo 0.5 mm
+  w.dxfPreview = { ...PREVIEW, bbox: { xmin: 0, ymin: 0, xmax: 1, ymax: 1 } };
+  check('margine minimo 0.5 mm', Math.abs(w.dxfPreviewViewBox().split(' ').map(Number)[0] + 0.5) < 1e-3);
+
+  w.dxfPreview = PREVIEW;
+  const s = w.dxfPreviewSummary;
+  check('summary L × H mm · N entità', s.includes('×') && s.includes('mm') && s.endsWith('2 entità')
+    && /12[,.]30/.test(s) && /5[,.]10/.test(s), s);
+
+  // Risposta tardiva scartata: due scelte di file, la prima risponde per ultima
+  const resolvers = [];
+  global.fetch = () => new Promise(res => resolvers.push(res));
+  global.FormData = class { append() {} };
+  const w2 = dxfRecipeWizard(1, () => 'tok', {});
+  const reply = (body, ok = true) => ({ ok, json: async () => body });
+  w2.dxfFile = { name: 'a.dxf' };
+  const p1 = w2.loadDxfPreview();
+  w2.dxfFile = { name: 'b.dxf' };
+  const p2 = w2.loadDxfPreview();
+  resolvers[1](reply(PREVIEW));
+  await p2;
+  resolvers[0](reply({ ...PREVIEW, entita: 99 }));
+  await p1;
+  check('la risposta vecchia non sovrascrive la nuova', w2.dxfPreview && w2.dxfPreview.entita === 2);
+  check('busy spento', w2.dxfPreviewBusy === false);
+
+  // File tolto: tutto azzerato
+  w2.dxfFile = null;
+  await w2.loadDxfPreview();
+  check('file tolto azzera anteprima ed errore', w2.dxfPreview === null && w2.dxfPreviewError === '');
+
+  // Errore 422 con detail
+  global.fetch = async () => reply({ detail: 'DXF illeggibile: x' }, false);
+  w2.dxfFile = { name: 'c.dxf' };
+  await w2.loadDxfPreview();
+  check('errore col detail', w2.dxfPreviewError === 'DXF illeggibile: x' && w2.dxfPreview === null, w2.dxfPreviewError);
+
+  // #102: anteprima dell'immagine
+  const wi = dxfRecipeWizard(1, () => 'tok', { imageField: 'campo' });
+  check('#102 senza immagine: summary vuoto', wi.imagePreviewSummary === '');
+  global.URL.createObjectURL = () => 'blob:x';
+  global.URL.revokeObjectURL = () => {};
+  wi._setImage({ name: 'a.bmp' }, 'file'); // #104: la scala a mano vale solo per file
+  check('#102 _setImage imposta URL e nome', wi.imagePreviewUrl === 'blob:x' && wi.imageName === 'a.bmp');
+  wi.onImagePreviewLoad({ naturalWidth: 2000, naturalHeight: 1000 });
+  check('#102 senza scala: solo pixel', /2[. ]?000 × 1[. ]?000 px$/.test(wi.imagePreviewSummary), wi.imagePreviewSummary);
+  wi.mmPx = '0,01';
+  check('#102 con mm/px a mano: campo in mm', /px · campo ≈ 20,00 × 10,00 mm$/.test(wi.imagePreviewSummary), wi.imagePreviewSummary);
+  wi.mmPx = ''; wi.calState = 'calibrated'; wi.calPxMm = 100;
+  check('#102 con calibrazione stazione: campo in mm', /campo ≈ 20,00 × 10,00 mm$/.test(wi.imagePreviewSummary), wi.imagePreviewSummary);
+  wi.onImagePreviewError();
+  check('#102 errore <img>: imageBroken e file ancora valido', wi.imageBroken === true && wi.imageFile && wi.imagePx === null);
+  wi._setImage(null);
+  check('#102 _setImage(null) azzera', wi.imagePreviewUrl === '' && wi.imageFile === null && wi.imageName === ''
+    && wi.imagePx === null && wi.imageBroken === false && wi.imagePreviewSummary === '');
+
+  // #104: scala a mano solo per immagini da file
+  const w4 = dxfRecipeWizard(1, () => 'tok', {});
+  w4._setImage({ name: 'a.bmp' }, 'file');
+  w4.mmPx = '0,01406';
+  check('#104 useManualScale vero con file', w4.useManualScale === true);
+  w4._setImage({ name: 'camera.png' }, 'camera');
+  check('#104 useManualScale falso con camera anche se mmPx valido', w4.manualPxMm !== null && w4.useManualScale === false);
+  w4.stationId = '1'; w4.dxfFile = { name: 'd.dxf' };
+  check('#104 canRun con camera richiede la calibrazione', w4.canRun === false);
+  w4.calState = 'calibrated'; w4.calPxMm = 50;
+  check('#104 canRun con camera e stazione calibrata', w4.canRun === true);
+
+  // #104: run() con la camera non invia px_per_mm; con il file si
+  const sent = [];
+  global.FormData = class { append(k, v) { sent.push(k); } };
+  global.fetch = async () => ({ ok: true, json: async () => ({ result: { outputs: {}, overlay: [], outcome: 'pass' } }) });
+  const tick = [];
+  w4.$nextTick = f => tick.push(f);
+  w4.$dispatch = () => {};
+  w4.$refs = {};
+  await w4.run(false);
+  check('#104 run con camera: niente px_per_mm', !sent.includes('px_per_mm') && sent.includes('station_id'), sent.join(','));
+  check('#104 run: tested true e scala = stazione', w4.tested === true && w4.runPxPerMm === 50);
+  sent.length = 0;
+  w4._setImage({ name: 'a.bmp' }, 'file');
+  w4.mmPx = '0,02';
+  await w4.run(false);
+  check('#104 run con file: px_per_mm inviato', sent.includes('px_per_mm') && Math.abs(w4.runPxPerMm - 50) < 1e-9, sent.join(','));
+  check('#104 esito pass', w4.outcome === 'pass' && w4.outcomeClass.includes('emerald'));
+
+  // #104: tested torna false dopo _setImage / onDxf / onStation
+  w4.tested = true; w4._setImage(null);
+  check('#104 tested falso dopo _setImage', w4.tested === false && w4.imageSource === '');
+  w4.tested = true; w4.onDxf({ target: { files: [] } });
+  check('#104 tested falso dopo onDxf', w4.tested === false);
+  w4.tested = true; w4.stationId = ''; await w4.onStation();
+  check('#104 tested falso dopo onStation', w4.tested === false);
+
+  // #104: zoomBy rispetta i limiti 0.05..8
+  const w5 = dxfRecipeWizard(1, () => 'tok', {});
+  w5.$nextTick = f => f();
+  w5.$refs = {};
+  for (let i = 0; i < 40; i++) w5.zoomBy(1.25);
+  check('#104 zoom massimo 8', w5.zoom === 8, String(w5.zoom));
+  for (let i = 0; i < 80; i++) w5.zoomBy(1 / 1.25);
+  check('#104 zoom minimo 0.05', w5.zoom === 0.05, String(w5.zoom));
+  w5.zoom = 1;
+  const vp = { scrollLeft: 100, scrollTop: 50, clientWidth: 200, clientHeight: 100 };
+  w5.$refs = { viewport: vp };
+  w5.zoomBy(2);
+  check('#104 zoomBy tiene il centro', w5.zoom === 2 && vp.scrollLeft === 300 && vp.scrollTop === 150, vp.scrollLeft + ',' + vp.scrollTop);
+  check('#104 zoomPct', w5.zoomPct === '200 %');
+
+  // #104: fit = min(viewport/immagine)
+  w5.$refs = { viewport: { clientWidth: 500, clientHeight: 400, scrollLeft: 9, scrollTop: 9 }, img: { naturalWidth: 2000, naturalHeight: 1000 } };
+  w5.fit();
+  check('#104 fit limitato dalla larghezza', Math.abs(w5.zoom - 0.25) < 1e-9, String(w5.zoom));
+  w5.$refs.img = { naturalWidth: 1000, naturalHeight: 2000 };
+  w5.fit();
+  check('#104 fit limitato dall altezza massima (520 senza window)', Math.abs(w5.zoom - 0.26) < 1e-9, String(w5.zoom));
+  w5.$refs.viewport.clientWidth = 0; w5.zoom = 1; w5.fit();
+  check('#104 fit con viewport nascosto non cambia', w5.zoom === 1);
+
+  // #105: ricetta esistente -> wizard compilato
+  global.File = class { constructor(parts, name, opts) { this.parts = parts; this.name = name; this.type = (opts && opts.type) || ''; } };
+  const SRC = { band_mm: 0.3, min_points_pct: 90, polarity: 'light', px_per_mm: 71.1237, dxf: 'disegno.dxf', image: 'riferimento.bmp' };
+  const blobOf = t => ({ type: t });
+  const mkFetch = (routes, calls) => async (url) => {
+    calls.push(url);
+    for (const k of Object.keys(routes)) if (url.endsWith(k)) return routes[k]();
+    return { ok: false, status: 404, json: async () => ({ error: true }) };
+  };
+  const okJson = body => () => ({ ok: true, json: async () => body });
+  const okBlob = t => () => ({ ok: true, blob: async () => blobOf(t) });
+
+  const w6 = dxfRecipeWizard(8, () => 'tok', { noReferenceImage: 'senza immagine', editLabel: 'Modifica', createLabel: 'Crea' });
+  w6.$nextTick = f => f();
+  const calls6 = [];
+  global.fetch = mkFetch({
+    '/recipe/dxf-compare/source': okJson(SRC),
+    '/recipe/files/disegno.dxf': okBlob('application/dxf'),
+    '/recipe/files/riferimento.bmp': okBlob('image/bmp'),
+    '/dxf-preview': okJson(PREVIEW),
+  }, calls6);
+  global.FormData = class { append() {} };
+  check('#105 senza ricetta: existing null', w6.existing === null);
+  w6.init();
+  await w6._existingReady;
+  check('#105 init legge /source', w6.existing && w6.existing.band_mm === 0.3 && calls6[0] === '/maker/api/vision/tasks/8/recipe/dxf-compare/source', calls6.join(','));
+  await w6.toggle();
+  await w6.openExisting();
+  check('#105 apertura: banda, soglia, polarita', w6.bandMm === 0.3 && w6.minPointsPct === 90 && w6.dark === false);
+  check('#105 mm/px = 1/px_per_mm con virgola', w6.mmPx === '0,01406', w6.mmPx);
+  check('#105 DXF caricato dalla cartella', w6.dxfFile && w6.dxfFile.name === 'disegno.dxf' && w6.dxfFromRecipe === true);
+  await new Promise(r => setTimeout(r, 0)); // l'anteprima parte senza essere attesa
+  check('#105 anteprima DXF richiesta', calls6.some(u => u.endsWith('/dxf-preview')) && w6.dxfPreview !== null);
+  check('#105 immagine con source file: il campo mm/px vale', w6.imageFile && w6.imageFile.name === 'riferimento.bmp'
+    && w6.imageSource === 'file' && w6.imageSrc === 'blob:x');
+  check('#105 info mostrata, nessun avviso', w6.existingInfo === true && w6.existingWarn === '');
+  const nCalls = calls6.length;
+  w6.bandMm = 0.2;
+  await w6.openExisting();
+  check('#105 seconda apertura non ricompila', w6.bandMm === 0.2 && calls6.length === nCalls);
+
+  // #105: ricetta senza immagine salvata -> avviso
+  const w7 = dxfRecipeWizard(8, () => 'tok', { noReferenceImage: 'senza immagine' });
+  global.fetch = mkFetch({
+    '/recipe/dxf-compare/source': okJson({ ...SRC, image: null, px_per_mm: null }),
+    '/recipe/files/disegno.dxf': okBlob('application/dxf'),
+    '/dxf-preview': okJson(PREVIEW),
+  }, []);
+  w7.init(); await w7._existingReady; await w7.openExisting();
+  check('#105 senza immagine: avviso e nessun file', w7.existingWarn === 'senza immagine' && w7.imageFile === null && w7.imageSource === '');
+  check('#105 px_per_mm null: mm/px resta vuoto', w7.mmPx === '');
+
+  // #105: 404 -> existing null, etichetta «Crea»
+  const w8 = dxfRecipeWizard(9, () => 'tok', {});
+  global.fetch = mkFetch({}, []);
+  w8.init(); await w8._existingReady; await w8.openExisting();
+  check('#105 404: existing null e nessuna compilazione', w8.existing === null && w8.existingInfo === false && w8.dxfFile === null);
+
+  // #105: file scelti a mano durante il download della ricetta non si sovrascrivono
+  const w9 = dxfRecipeWizard(8, () => 'tok', {});
+  const gates = {};
+  const gate = k => () => new Promise(res => { gates[k] = () => res({ ok: true, blob: async () => blobOf(k) }); });
+  global.fetch = mkFetch({
+    '/recipe/dxf-compare/source': okJson(SRC),
+    '/recipe/files/disegno.dxf': gate('dxf'),
+    '/recipe/files/riferimento.bmp': gate('bmp'),
+    '/dxf-preview': okJson(PREVIEW),
+  }, []);
+  w9.init(); await w9._existingReady;
+  const pa = w9.openExisting();
+  await new Promise(r => setTimeout(r, 0));
+  w9.onDxf({ target: { files: [{ name: 'mio.dxf' }] } });
+  w9._setImage({ name: 'mia.bmp' }, 'file');
+  gates.dxf(); gates.bmp();
+  await pa;
+  check('#105 DXF scelto a mano non sovrascritto', w9.dxfFile.name === 'mio.dxf' && w9.dxfFromRecipe === false);
+  check('#105 immagine scelta a mano non sovrascritta', w9.imageFile.name === 'mia.bmp');
+
+  // #105: file della ricetta illeggibile -> avviso
+  const w10 = dxfRecipeWizard(8, () => 'tok', { existingFilesFailed: 'illeggibili' });
+  global.fetch = mkFetch({
+    '/recipe/dxf-compare/source': okJson(SRC),
+    '/recipe/files/disegno.dxf': () => ({ ok: false, status: 404 }),
+    '/recipe/files/riferimento.bmp': okBlob('image/bmp'),
+  }, []);
+  w10.init(); await w10._existingReady; await w10.openExisting();
+  check('#105 DXF illeggibile: avviso, immagine comunque caricata', w10.existingWarn === 'illeggibili' && w10.dxfFile === null && w10.imageFile !== null);
+
+  // #105: dopo Salva si rilegge /source e il wizard non si ricompila
+  const w11 = dxfRecipeWizard(8, () => 'tok', {});
+  w11.$nextTick = f => f(); w11.$dispatch = () => {}; w11.$refs = {};
+  w11.stationId = '1'; w11.calState = 'calibrated'; w11.calPxMm = 50;
+  w11.imageFile = { name: 'a.bmp' }; w11.dxfFile = { name: 'd.dxf' };
+  global.FormData = class { append() {} };
+  global.fetch = async (url, opts) => url.endsWith('/source')
+    ? { ok: true, json: async () => SRC }
+    : { ok: true, json: async () => ({ saved: true, result: { outputs: {}, overlay: [], outcome: 'pass' } }) };
+  await w11.run(true);
+  check('#105 dopo Salva: existing letto e non ricompilato', w11.existing && w11.existing.band_mm === 0.3 && w11._existingApplied === true);
+
+  // #104: pan col puntatore
+  const wpan = dxfRecipeWizard(1, () => 'tok', {});
+  const vppan = { scrollLeft: 100, scrollTop: 100, clientWidth: 500, clientHeight: 400, setPointerCapture() {} };
+  wpan.$refs = { viewport: vppan };
+  wpan.onPanDown({ clientX: 200, clientY: 200, pointerId: 1, pointerType: 'mouse', button: 0 });
+  wpan.onPanMove({ clientX: 170, clientY: 180 });
+  check('#104 pan: pointermove (-30,-20) -> scroll +30/+20', vppan.scrollLeft === 130 && vppan.scrollTop === 120, vppan.scrollLeft + ',' + vppan.scrollTop);
+  check('#104 pan: grabbing durante il trascinamento', wpan.panning === true);
+  wpan.onPanEnd();
+  wpan.onPanMove({ clientX: 0, clientY: 0 });
+  check('#104 pan: dopo pointerup non scrolla', vppan.scrollLeft === 130 && wpan.panning === false);
+  wpan.onPanDown({ clientX: 0, clientY: 0, pointerId: 1, pointerType: 'mouse', button: 2 });
+  check('#104 pan: il tasto destro non parte', wpan.panning === false);
+
+  // #104: altezza del viewport
+  global.window = { innerHeight: 1000 }; // max = min(700, 520) = 520
+  wpan.resPx = { w: 2000, h: 1000 };
+  wpan.$refs = { viewport: { clientWidth: 500, scrollLeft: 0, scrollTop: 0 }, img: { naturalWidth: 2000, naturalHeight: 1000 } };
+  wpan.fit(); // zoom = min(500/2000, 520/1000) = 0.25
+  check('#104 fit usa l altezza massima', Math.abs(wpan.zoom - 0.25) < 1e-9 && wpan.fitZoom === wpan.zoom, String(wpan.zoom));
+  check('#104 altezza a Fit = immagine scalata', wpan.vpHeight === 250 && wpan.canPan === false, String(wpan.vpHeight)); // zoomH = 250
+  wpan.resPx = { w: 2000, h: 400 }; // zoomH = 100 -> minimo 200
+  check('#104 altezza minima 200', wpan.vpHeight === 200, String(wpan.vpHeight));
+  wpan.zoom = 1;
+  check('#104 con zoom > Adatta altezza massima e pan attivo', wpan.vpHeight === 520 && wpan.canPan === true && wpan.panCursor === 'grab');
+  global.window = { innerHeight: 500 }; // 70vh = 350
+  check('#104 altezza massima = 70vh se minore di 520', wpan.vpHeight === 350, String(wpan.vpHeight));
+  delete global.window;
+
+  if (failures) { console.log(failures + ' fallimenti'); process.exit(1); }
+  console.log('tutto ok');
+})();

src/frontend/flask_app/tests/js/test_image_to_png.js

@@ -0,0 +1,32 @@
+/**
+ * image_to_png.js, run with plain node (#107): solo la parte pura (niente canvas qui).
+ * Run from src/frontend/flask_app: node tests/js/test_image_to_png.js
+ */
+'use strict';
+const path = require('path');
+const { tmfNeedsPng, tmfImageToPng } = require(
+  path.join(__dirname, '..', '..', 'static', 'js', 'image_to_png.js'),
+);
+
+let failures = 0;
+function check(label, cond) {
+  if (cond) { console.log('ok - ' + label); } else { console.error('FAIL - ' + label); failures++; }
+}
+
+check('bmp va convertito', tmfNeedsPng('image/bmp') === true);
+check('tiff va convertito', tmfNeedsPng('image/tiff') === true);
+check('png no', tmfNeedsPng('image/png') === false);
+check('jpeg no', tmfNeedsPng('image/jpeg') === false);
+check('gif no', tmfNeedsPng('image/gif') === false);
+check('webp no', tmfNeedsPng('image/webp') === false);
+check('pdf no', tmfNeedsPng('application/pdf') === false);
+check('tipo vuoto no', tmfNeedsPng('') === false);
+
+(async () => {
+  const fake = { name: 'a.png', type: 'image/png' };
+  check('png ritorna lo stesso oggetto', (await tmfImageToPng(fake)) === fake);
+  const pdf = { name: 'a.pdf', type: 'application/pdf' };
+  check('pdf ritorna lo stesso oggetto', (await tmfImageToPng(pdf)) === pdf);
+  if (failures) { console.error(failures + ' failure(s)'); process.exit(1); }
+  console.log('all ok');
+})();

src/frontend/flask_app/tests/test_admin_stations.py

@@ -278,7 +278,7 @@ def test_camera_sources_proxy_keeps_only_the_three_fields(logged_in_client, mock
         "name": "camera:folder", "label": "Cartella", "kind": "folder"}
     assert len(resp.get_json()["sources"]) == 2
     assert get.call_args.args[0] == "http://acq:8765/camera/sources"
-    assert get.call_args.kwargs["timeout"] == 5
+    assert get.call_args.kwargs["timeout"] == 15  # #106
 
 
 @pytest.mark.parametrize("url", ["ftp://x", "", "http://", "acq:8765"])

src/frontend/flask_app/tests/test_dxf_preview_js.py

@@ -0,0 +1,35 @@
+"""Runs the plain-node DXF preview behaviour test (tests/js/test_dxf_preview.js).
+
+Same thin pytest wrapper pattern as test_numpad_js.py: shells out to ``node``
+and asserts the script's own exit code. Skips (does not fail) when node is
+not installed.
+
+Covers gitea:Adriano/TieMeasureFlow#101.
+"""
+import shutil
+import subprocess
+from pathlib import Path
+
+import pytest
+
+FLASK_APP_DIR = Path(__file__).resolve().parent.parent
+JS_TEST = Path(__file__).resolve().parent / "js" / "test_dxf_preview.js"
+
+
+def test_dxf_preview_js_behaviour():
+    node = shutil.which("node")
+    if not node:
+        pytest.skip("node non installato: test JS di dxf_recipe_wizard.js saltato")
+
+    result = subprocess.run(
+        [node, str(JS_TEST)],
+        cwd=str(FLASK_APP_DIR),
+        capture_output=True,
+        text=True,
+        timeout=30,
+    )
+
+    assert result.returncode == 0, (
+        f"tests/js/test_dxf_preview.js fallito (exit {result.returncode})\n"
+        f"stdout:\n{result.stdout}\nstderr:\n{result.stderr}"
+    )

src/frontend/flask_app/tests/test_dxf_recipe_routes.py

@@ -72,6 +72,7 @@ class TestStationCameraGrab:
         args, kwargs = post.call_args
         assert args[0] == "http://acq:8765/camera/grab"  # slash finale tolto
         assert kwargs["json"] == {"source": "camera:folder", "trigger": "continuo", "timeout_ms": 5000}
+        assert kwargs["timeout"] == 60  # #106: margine per la prima apertura GenTL
 
     def test_get_also_works(self, logged_in_client, mock_api_client):
         _stations(mock_api_client)
@@ -178,6 +179,12 @@ class TestDxfCompareProxy:
         assert set(kwargs["files"]) == {"image", "dxf"}
         assert kwargs["files"]["image"][1] == PNG
 
+    def test_manual_px_per_mm_forwarded(self, logged_in_client, mock_api_client):
+        # #98: scala a mano dal wizard (immagine da file): inoltrata al backend
+        mock_api_client.post.return_value = self.OK
+        self._post(logged_in_client, station_id="4", px_per_mm="71.1237")
+        assert mock_api_client.post.call_args.kwargs["data"]["px_per_mm"] == "71.1237"
+
     def test_save_true_forwarded(self, logged_in_client, mock_api_client):
         mock_api_client.post.return_value = {**self.OK, "saved": True, "recipe_dir": "vision/recipes/7/x"}
         resp = self._post(logged_in_client, save="true")
@@ -204,6 +211,122 @@ class TestDxfCompareProxy:
         mock_api_client.post.assert_not_called()
 
 
+class TestDxfPreviewProxy:
+    """#101: anteprima del DXF scelto nel wizard (proxy verso il backend)."""
+    URL = "/maker/api/vision/dxf-preview"
+    OK = {
+        "contorni": [[[0.0, -5.0], [10.0, -5.0], [10.0, 0.0], [0.0, 0.0]]],
+        "bbox": {"xmin": 0.0, "ymin": -5.0, "xmax": 10.0, "ymax": 0.0},
+        "larghezza_mm": 10.0, "altezza_mm": 5.0, "entita": 1, "punti": 4,
+    }
+
+    def _post(self, client, with_file=True):
+        data = {"dxf": (io.BytesIO(b"0\nEOF"), "d.dxf")} if with_file else {}
+        return client.post(self.URL, data=data, content_type="multipart/form-data")
+
+    def test_forwards_file(self, logged_in_client, mock_api_client):
+        mock_api_client.post.return_value = self.OK
+        resp = self._post(logged_in_client)
+        assert resp.status_code == 200
+        assert resp.get_json()["larghezza_mm"] == 10.0
+        args, kwargs = mock_api_client.post.call_args
+        assert args[0] == "/api/vision/dxf-preview"
+        assert set(kwargs["files"]) == {"dxf"}
+        assert kwargs["files"]["dxf"][0] == "d.dxf"
+        assert kwargs["files"]["dxf"][1] == b"0\nEOF"
+
+    def test_missing_file_is_400(self, logged_in_client, mock_api_client):
+        resp = self._post(logged_in_client, with_file=False)
+        assert resp.status_code == 400
+        mock_api_client.post.assert_not_called()
+
+    def test_backend_422_propagates(self, logged_in_client, mock_api_client):
+        mock_api_client.post.return_value = {
+            "error": True, "status_code": 422, "detail": "DXF illeggibile: x"}
+        resp = self._post(logged_in_client)
+        assert resp.status_code == 422
+        assert resp.get_json()["detail"] == "DXF illeggibile: x"
+
+    def test_requires_maker_role(self, logged_in_client, mock_api_client):
+        with logged_in_client.session_transaction() as sess:
+            sess["user"] = {**sess["user"], "roles": ["MeasurementTec"]}
+        assert self._post(logged_in_client).status_code == 403
+        mock_api_client.post.assert_not_called()
+
+
+class TestDxfSourceProxy:
+    """#105: parametri della ricetta DXF gia' salvata (proxy verso il backend)."""
+    URL = "/maker/api/vision/tasks/7/recipe/dxf-compare/source"
+    OK = {"band_mm": 0.3, "min_points_pct": 95.0, "polarity": "dark", "px_per_mm": 71.12,
+          "dxf": "disegno.dxf", "image": "riferimento.bmp"}
+
+    def test_forwards_body(self, logged_in_client, mock_api_client):
+        mock_api_client.get.return_value = self.OK
+        resp = logged_in_client.get(self.URL)
+        assert resp.status_code == 200
+        assert resp.get_json() == self.OK
+        assert mock_api_client.get.call_args.args[0] == "/api/vision/tasks/7/recipe/dxf-compare/source"
+
+    def test_404_propagates(self, logged_in_client, mock_api_client):
+        mock_api_client.get.return_value = {
+            "error": True, "status_code": 404, "detail": "nessuna ricetta da DXF su questo task"}
+        resp = logged_in_client.get(self.URL)
+        assert resp.status_code == 404
+        assert resp.get_json()["detail"] == "nessuna ricetta da DXF su questo task"
+
+    def test_requires_maker_role(self, logged_in_client, mock_api_client):
+        with logged_in_client.session_transaction() as sess:
+            sess["user"] = {**sess["user"], "roles": ["MeasurementTec"]}
+        assert logged_in_client.get(self.URL).status_code == 403
+        mock_api_client.get.assert_not_called()
+
+
+class TestRecipeFileProxy:
+    """#105: file della cartella ricetta (DXF, immagine di riferimento) passati come byte."""
+    URL = "/maker/api/vision/tasks/7/recipe/files/riferimento.bmp"
+    BMP = b"BM 1 fake bmp"
+
+    def _fake_file(self, status=200, content=BMP, ctype="image/bmp"):
+        resp = MagicMock(status_code=status, content=content)
+        resp.headers = {"content-type": ctype}
+        return resp
+
+    def test_bytes_and_content_type_pass_through(self, logged_in_client, mock_api_client):
+        with patch("blueprints.maker.http_requests.get", return_value=self._fake_file()) as get:
+            resp = logged_in_client.get(self.URL)
+        assert resp.status_code == 200
+        assert resp.data == self.BMP
+        assert resp.mimetype == "image/bmp"
+        args, kwargs = get.call_args
+        assert args[0].endswith("/api/vision/tasks/7/recipe/files/riferimento.bmp")
+        assert kwargs["headers"]["X-API-Key"] == "test-api-key-12345"
+
+    def test_backend_404_propagates(self, logged_in_client, mock_api_client):
+        body = b'{"detail":"file non trovato"}'
+        with patch("blueprints.maker.http_requests.get",
+                   return_value=self._fake_file(404, body, "application/json")):
+            resp = logged_in_client.get(self.URL)
+        assert resp.status_code == 404
+        assert resp.get_json()["detail"] == "file non trovato"
+
+    def test_unsafe_path_is_404_without_calling_backend(self, logged_in_client, mock_api_client):
+        with patch("blueprints.maker.http_requests.get") as get:
+            for path in ("a/../../x", "..%5Cx", "%2e%2e/x"):
+                assert logged_in_client.get(f"/maker/api/vision/tasks/7/recipe/files/{path}").status_code == 404
+        get.assert_not_called()
+
+    def test_service_down_is_502(self, logged_in_client, mock_api_client):
+        with patch("blueprints.maker.http_requests.get", side_effect=requests.ConnectionError("giu")):
+            assert logged_in_client.get(self.URL).status_code == 502
+
+    def test_requires_maker_role(self, logged_in_client, mock_api_client):
+        with logged_in_client.session_transaction() as sess:
+            sess["user"] = {**sess["user"], "roles": ["MeasurementTec"]}
+        with patch("blueprints.maker.http_requests.get") as get:
+            assert logged_in_client.get(self.URL).status_code == 403
+        get.assert_not_called()
+
+
 class TestPages:
     def test_stations_page_has_calibration_cell(self, logged_in_client):
         with patch("blueprints.admin.api_client") as admin_api:
@@ -229,4 +352,10 @@ class TestPages:
         assert "js/dxf_recipe_wizard.js" in html
         assert "dxfRecipeWizard(" in html
         assert "@dxf-recipe-saved" in html
+        assert 'x-model="mmPx"' in html  # #98: campo mm/px a mano
+        assert "dxfPreviewD()" in html and "view-box.camel" in html  # #101: anteprima SVG del DXF
+        assert "imageSource === 'file'" in html and "zoomBy(" in html and "fit()" in html  # #104: mm/px solo da file, zoom e Fit
+        assert 'onPanDown($event)' in html  # #104: pan col puntatore
+        assert "imagePreviewUrl" in html and "imagePreviewSummary" in html  # #102: anteprima immagine
+        assert "existing ? msgs.editLabel : msgs.createLabel" in html and "Modifica ricetta da DXF" in html  # #105: etichetta dinamica
         assert "Pezzo scuro su fondo chiaro" in html or "Dark part on light" in html

src/frontend/flask_app/tests/test_image_to_png_js.py

@@ -0,0 +1,31 @@
+"""Runs the plain-node image_to_png.js test (tests/js/test_image_to_png.js).
+
+Covers gitea:Adriano/TieMeasureFlow#107.
+"""
+import shutil
+import subprocess
+from pathlib import Path
+
+import pytest
+
+FLASK_APP_DIR = Path(__file__).resolve().parent.parent
+JS_TEST = Path(__file__).resolve().parent / "js" / "test_image_to_png.js"
+
+
+def test_image_to_png_js_pure_behaviour():
+    node = shutil.which("node")
+    if not node:
+        pytest.skip("node non installato: test JS di image_to_png.js saltato")
+
+    result = subprocess.run(
+        [node, str(JS_TEST)],
+        cwd=str(FLASK_APP_DIR),
+        capture_output=True,
+        text=True,
+        timeout=30,
+    )
+
+    assert result.returncode == 0, (
+        f"tests/js/test_image_to_png.js fallito (exit {result.returncode})\n"
+        f"stdout:\n{result.stdout}\nstderr:\n{result.stderr}"
+    )

src/frontend/flask_app/tests/test_maker.py

@@ -313,6 +313,10 @@ class TestImageCropInclusion:
         html = logged_in_client.get("/maker/recipes/3/tasks").get_data(as_text=True)
         assert "js/image-crop.js" in html
         assert "tmfCropBeforeUpload(file)" in html
+        # #107: conversione BMP->PNG e errore upload nel riquadro Disegno Tecnico
+        assert "js/image_to_png.js" in html
+        assert "tmfImageToPng(file)" in html
+        assert "uploadErrorTask" in html
 
     def test_recipe_editor_includes_crop(self, logged_in_client, mock_api_client):
         mock_api_client.get.side_effect = [
@@ -322,3 +326,6 @@ class TestImageCropInclusion:
         html = logged_in_client.get("/maker/recipes/1/edit").get_data(as_text=True)
         assert "js/image-crop.js" in html
         assert "tmfCropBeforeUpload(file)" in html
+        # #107: conversione BMP->PNG prima dei controlli di formato
+        assert "js/image_to_png.js" in html
+        assert "tmfImageToPng(file)" in html

src/frontend/flask_app/tests/test_measure_camera_grab.py

@@ -68,7 +68,7 @@ def test_grab_passes_png_through(logged_in_client, mock_api_client, monkeypatch)
     assert kwargs["json"] == {
         "source": "camera:folder", "trigger": "continuo", "timeout_ms": 5000,
     }
-    assert kwargs["timeout"] == 15
+    assert kwargs["timeout"] == 60  # #106
 
 
 def test_grab_service_503_is_502(logged_in_client, mock_api_client, monkeypatch):

src/frontend/flask_app/tests/test_statistics.py

@@ -167,3 +167,11 @@ class TestRunTaskResultsProxy:
         assert 'id="run-task-results"' in html
         assert "loadTaskResults" in html
         assert "/statistics/api/runs/" in html
+
+    def test_dashboard_all_points_overview(self, logged_in_client, mock_api_client):
+        # #100: con «Tutti i punti» la pagina ha tabella per-punto e select che ricarica da solo
+        mock_api_client.get.return_value = {"items": [], "total": 0, "pages": 1}
+        html = logged_in_client.get("/statistics/dashboard").get_data(as_text=True)
+        assert "capabilityAll" in html
+        assert "loadedSubtaskId" in html
+        assert '@change="loadData()"' in html

src/frontend/flask_app/translations/en/LC_MESSAGES/messages.po

@@ -3485,3 +3485,106 @@ msgstr "Invalid camera address"
 #: templates/admin/stations.html blueprints/admin.py (#88)
 msgid "Risposta non valida dal servizio camera"
 msgstr "Invalid response from the camera service"
+
+#: templates/statistics/dashboard.html (#100)
+msgid "Scegli un punto per carta di controllo e istogramma"
+msgstr "Choose a point for the control chart and histogram"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#101)
+msgid "Serve il file DXF"
+msgstr "The DXF file is required"
+
+msgid "Lettura DXF…"
+msgstr "Reading DXF…"
+
+msgid "entità"
+msgstr "entities"
+
+#: templates/maker/task_editor.html (#102)
+msgid "campo"
+msgstr "field"
+
+#: templates/maker/task_editor.html (#102)
+msgid "Anteprima non disponibile per questo formato"
+msgstr "Preview not available for this format"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Riduci"
+msgstr "Zoom out"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Ingrandisci"
+msgstr "Zoom in"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Adatta"
+msgstr "Fit"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Scala"
+msgstr "Scale"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Punti in banda"
+msgstr "Points in band"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Distanza media"
+msgstr "Average distance"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Distanza minima"
+msgstr "Minimum distance"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Distanza massima"
+msgstr "Maximum distance"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Conforme"
+msgstr "Pass"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Con avvisi"
+msgstr "Warning"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Non conforme"
+msgstr "Fail"
+
+#: templates/maker/task_editor.html (#104)
+msgid "mm/px a mano"
+msgstr "manual mm/px"
+
+#: templates/maker/task_editor.html (#104)
+msgid "calibrazione stazione"
+msgstr "station calibration"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Modifica ricetta da DXF"
+msgstr "Edit recipe from DXF"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Immagine di riferimento non salvata (ricetta creata prima): acquisiscila o caricala"
+msgstr "Reference image not saved (recipe created earlier): capture or upload it"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Impossibile leggere i file della ricetta esistente"
+msgstr "Cannot read the files of the existing recipe"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Ricetta esistente caricata: Prova e poi Salva ricetta per sostituirla"
+msgstr "Existing recipe loaded: Test, then Save recipe to replace it"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "File non trovato"
+msgstr "File not found"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+#, python-format
+msgid "Servizio non raggiungibile: %(detail)s"
+msgstr "Service not reachable: %(detail)s"
+
+#: templates/maker/task_editor.html templates/maker/recipe_editor.html (#107)
+msgid "Formato immagine non leggibile. Usa PNG, JPG o PDF."
+msgstr "Unreadable image format. Use PNG, JPG or PDF."

src/frontend/flask_app/translations/it/LC_MESSAGES/messages.po

@@ -3473,3 +3473,102 @@ msgstr "Indirizzo della camera non valido"
 #: templates/admin/stations.html blueprints/admin.py (#88)
 msgid "Risposta non valida dal servizio camera"
 msgstr "Risposta non valida dal servizio camera"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#101)
+msgid "Serve il file DXF"
+msgstr "Serve il file DXF"
+
+msgid "Lettura DXF…"
+msgstr "Lettura DXF…"
+
+msgid "entità"
+msgstr "entità"
+
+#: templates/maker/task_editor.html (#102)
+msgid "campo"
+msgstr "campo"
+
+#: templates/maker/task_editor.html (#102)
+msgid "Anteprima non disponibile per questo formato"
+msgstr "Anteprima non disponibile per questo formato"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Riduci"
+msgstr "Riduci"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Ingrandisci"
+msgstr "Ingrandisci"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Adatta"
+msgstr "Adatta"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Scala"
+msgstr "Scala"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Punti in banda"
+msgstr "Punti in banda"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Distanza media"
+msgstr "Distanza media"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Distanza minima"
+msgstr "Distanza minima"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Distanza massima"
+msgstr "Distanza massima"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Conforme"
+msgstr "Conforme"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Con avvisi"
+msgstr "Con avvisi"
+
+#: templates/maker/task_editor.html (#104)
+msgid "Non conforme"
+msgstr "Non conforme"
+
+#: templates/maker/task_editor.html (#104)
+msgid "mm/px a mano"
+msgstr "mm/px a mano"
+
+#: templates/maker/task_editor.html (#104)
+msgid "calibrazione stazione"
+msgstr "calibrazione stazione"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Modifica ricetta da DXF"
+msgstr "Modifica ricetta da DXF"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Immagine di riferimento non salvata (ricetta creata prima): acquisiscila o caricala"
+msgstr "Immagine di riferimento non salvata (ricetta creata prima): acquisiscila o caricala"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Impossibile leggere i file della ricetta esistente"
+msgstr "Impossibile leggere i file della ricetta esistente"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "Ricetta esistente caricata: Prova e poi Salva ricetta per sostituirla"
+msgstr "Ricetta esistente caricata: Prova e poi Salva ricetta per sostituirla"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+msgid "File non trovato"
+msgstr "File non trovato"
+
+#: templates/maker/task_editor.html blueprints/maker.py (#105)
+#, python-format
+msgid "Servizio non raggiungibile: %(detail)s"
+msgstr "Servizio non raggiungibile: %(detail)s"
+
+#: templates/maker/task_editor.html templates/maker/recipe_editor.html (#107)
+msgid "Formato immagine non leggibile. Usa PNG, JPG o PDF."
+msgstr "Formato immagine non leggibile. Usa PNG, JPG o PDF."

src/vision/costruttori.py

@@ -184,6 +184,66 @@ def _candidate_anchors(gray: np.ndarray, dxf_path: Path, px_per_mm: float,
     return anchors
 
 
+def chiudi_contorni(dxf_bytes: bytes) -> tuple[bytes, dict]:
+    """#103: unisce le entita' aperte (LINE/ARC/polilinee aperte in fila) in contorni chiusi.
+
+    CompareDxf taglia il contorno misurato agli estremi di ogni entita' aperta
+    del disegno (cut_open_ends): con un profilo spezzato in LINE+ARC e banda
+    larga non resta nessun punto in banda e il confronto fallisce. Qui le catene
+    chiuse diventano una LWPOLYLINE chiusa (con bulge per gli archi).
+
+    Pura e senza eccezioni nuove: se non c'e' nulla da unire, o ezdxf non legge
+    il file, ritorna i byte originali (sha invariato, ricette esistenti stabili).
+    Ritorna (bytes, {"anelli", "entita_unite", "entita_libere"}).
+    """
+    nulla = {"anelli": 0, "entita_unite": 0, "entita_libere": 0}
+    try:
+        import ezdxf
+        from ezdxf import edgeminer as em, edgesmith as es
+
+        with tempfile.TemporaryDirectory() as tmp:
+            src = Path(tmp) / "in.dxf"
+            src.write_bytes(dxf_bytes)
+            doc = ezdxf.readfile(str(src))
+            msp = doc.modelspace()
+            # edges_from_entities_2d salta le entita' gia' chiuse (restano dove sono)
+            edges = list(es.edges_from_entities_2d(msp))
+            if not edges:
+                return dxf_bytes, nulla
+            loops = em.find_all_loops(em.Deposit(edges, gap_tol=0.01))  # 0.01 mm: giunzioni CAD
+            usati: set = set()
+            unite: list = []  # (polilinea, entita' di partenza)
+            # loop piu' lungo per primo, ogni edge usato una sola volta
+            for loop in sorted(loops, key=lambda lp: -sum(e.length for e in lp)):
+                ids = {e.id for e in loop}
+                if ids & usati:
+                    continue
+                usati |= ids
+                unite.append((loop, es.lwpolyline_from_chain(loop)))
+            if not unite:
+                return dxf_bytes, {**nulla, "entita_libere": len(edges)}
+            entita_unite = 0
+            for loop, pl in unite:
+                pl.closed = True
+                payload = getattr(loop[0], "payload", None)
+                layer = getattr(getattr(payload, "dxf", None), "layer", None)
+                if layer:
+                    pl.dxf.layer = layer  # stesso layer dell'entita' di partenza
+                for e in loop:
+                    ent = getattr(e, "payload", None)
+                    if ent is not None and ent.is_alive:
+                        msp.delete_entity(ent)  # sostituita dalla polilinea chiusa
+                msp.add_foreign_entity(pl)
+                entita_unite += len(loop)
+            dst = Path(tmp) / "out.dxf"
+            doc.saveas(str(dst))
+            info = {"anelli": len(unite), "entita_unite": entita_unite,
+                    "entita_libere": len(edges) - entita_unite}
+            return dst.read_bytes(), info
+    except Exception:  # noqa: BLE001 - DXF illeggibile: l'errore resta quello a valle
+        return dxf_bytes, nulla
+
+
 def _run(gray, graph, px_per_mm, folder) -> RunOutcome:
     return run_graph(gray, graph, calibration={"px_per_mm": px_per_mm}, recipe_dir=folder)
 
@@ -211,6 +271,9 @@ def build_dxf_compare(
         raise CostruttoreError(f"polarity deve essere una di {list(_POLARITIES)}")
     if not dxf_bytes:
         raise CostruttoreError("DXF vuoto")
+    # #103: entita' aperte unite in contorni chiusi PRIMA dello sha: disegno.dxf,
+    # grafo e runtime usano tutti il DXF chiuso
+    dxf_bytes, _info_chiusura = chiudi_contorni(dxf_bytes)
 
     frame = _gray_u8(gray)
     calibration_bytes = json.dumps({"px_per_mm": px_per_mm}).encode("utf-8")

src/vision_worker/main.py

@@ -11,13 +11,14 @@ import io
 import json
 import os
 import re
+import tempfile  # #101
 from pathlib import Path
 
 import numpy as np
 from fastapi import FastAPI, File, Form, HTTPException, UploadFile, status
 from PIL import Image, UnidentifiedImageError
 
-from src.vision.costruttori import CostruttoreError, build_dxf_compare  # #83
+from src.vision.costruttori import CostruttoreError, build_dxf_compare, chiudi_contorni  # #83 #103
 from src.vision.runner import (
     GraphBuildError,
     RunOutcome,
@@ -288,3 +289,91 @@ async def recipes_dxf_compare(
                 status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                 detail=f"recipe build failed: {type(exc).__name__}: {exc}",
             ) from exc
+
+
+# #101: tetto ai punti dell'anteprima DXF (un profilo fitto non deve gonfiare
+# la risposta ne' rallentare il disegno SVG nel browser).
+_PREVIEW_MAX_POINTS = 20000
+
+
+def _decimate(points: list[list[float]], keep: int) -> list[list[float]]:
+    """Decimazione uniforme a `keep` punti (>= 2), primo e ultimo sempre inclusi."""
+    n = len(points)
+    if n <= keep or keep < 2:
+        return points
+    idx = sorted({round(i * (n - 1) / (keep - 1)) for i in range(keep)})
+    return [points[i] for i in idx]
+
+
+def _dxf_preview(dxf_bytes: bytes) -> dict:
+    """#101: legge il DXF con lo stesso lettore di CompareDxf (read_xld_dxf) e ne
+    ritorna i contorni in mm, asse y verso il basso (come immagine e SVG).
+
+    Funzione sincrona e pura: la rotta la esegue in un thread. Solleva
+    CostruttoreError per DXF vuoto, illeggibile o senza geometria.
+    """
+    if not dxf_bytes:
+        raise CostruttoreError("DXF illeggibile: file vuoto")
+    from visionsuite.io.dxf import read_xld_dxf
+    # #103: l'anteprima mostra cio' che il confronto usera' (contorni chiusi)
+    dxf_bytes, _ = chiudi_contorni(dxf_bytes)
+    with tempfile.TemporaryDirectory() as tmp:
+        path = Path(tmp) / "disegno.dxf"
+        path.write_bytes(dxf_bytes)
+        try:
+            # flip_y=False + scale=1: coordinate native del DXF, in mm; il
+            # ribaltamento dell'asse y lo facciamo noi sotto (y = -y_dxf)
+            conts = list(read_xld_dxf(str(path), sampling_distance=0.05,
+                                      scale=1.0, flip_y=False))
+        except Exception as exc:  # noqa: BLE001 - qualunque errore di lettura = DXF illeggibile
+            raise CostruttoreError(f"DXF illeggibile: {type(exc).__name__}: {exc}") from exc
+
+    contorni: list[list[list[float]]] = []
+    for cont in conts:
+        pts = np.asarray(cont.points, dtype=float)  # (riga, colonna) = (y_dxf, x_dxf)
+        if pts.ndim != 2 or pts.shape[0] < 2:
+            continue
+        line = [[float(c), float(-r)] for r, c in pts]
+        if cont.closed and line[0] != line[-1]:
+            line.append(list(line[0]))  # chiude il giro anche nella polilinea SVG
+        contorni.append(line)
+    if not contorni:
+        raise CostruttoreError("DXF senza geometria")
+
+    # #101: le dimensioni si misurano sui punti completi, prima della decimazione
+    xs = [p[0] for c in contorni for p in c]
+    ys = [p[1] for c in contorni for p in c]
+    xmin, xmax, ymin, ymax = min(xs), max(xs), min(ys), max(ys)
+
+    total = len(xs)
+    if total > _PREVIEW_MAX_POINTS:
+        # quota per contorno proporzionale, minimo 2 punti
+        contorni = [
+            _decimate(c, max(2, int(len(c) * _PREVIEW_MAX_POINTS / total))) for c in contorni
+        ]
+    contorni = [[[round(x, 3), round(y, 3)] for x, y in c] for c in contorni]
+    xmin, xmax, ymin, ymax = (round(v, 3) for v in (xmin, xmax, ymin, ymax))
+    return {
+        "contorni": contorni,
+        "bbox": {"xmin": xmin, "ymin": ymin, "xmax": xmax, "ymax": ymax},
+        "larghezza_mm": round(xmax - xmin, 3),
+        "altezza_mm": round(ymax - ymin, 3),
+        "entita": len(contorni),
+        "punti": sum(len(c) for c in contorni),
+    }
+
+
+@app.post("/dxf/preview")
+async def dxf_preview(dxf: UploadFile = File(...)) -> dict:
+    """#101: anteprima del disegno DXF (contorni + dimensioni in mm) per il
+    wizard «Crea ricetta da DXF». Solo lettura, leggera: nessun run slot."""
+    dxf_bytes = await dxf.read()
+    try:
+        return await asyncio.to_thread(_dxf_preview, dxf_bytes)
+    except CostruttoreError as exc:
+        raise _unprocessable(str(exc)) from exc
+    except Exception as exc:
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=f"dxf preview failed: {type(exc).__name__}: {exc}",
+        ) from exc

src/vision_worker/tests/test_chiudi_contorni.py

@@ -0,0 +1,101 @@
+"""#103: chiudi_contorni unisce LINE/ARC aperti in contorni chiusi (test sincroni, no pytest-asyncio)."""
+import hashlib
+import io
+import tempfile
+from pathlib import Path
+
+import cv2
+import ezdxf
+import numpy as np
+import pytest
+
+from src.vision.costruttori import CostruttoreError, build_dxf_compare, chiudi_contorni
+from src.vision_worker.main import _dxf_preview
+
+
+def _dxf(riempi) -> bytes:
+    doc = ezdxf.new("R2010")
+    riempi(doc.modelspace())
+    buf = io.StringIO()
+    doc.write(buf)
+    return buf.getvalue().encode("utf-8")
+
+
+def _quattro_line(msp, w=20.0, h=10.0):
+    pts = [(0, 0), (w, 0), (w, h), (0, h)]
+    for i in range(4):
+        msp.add_line(pts[i], pts[(i + 1) % 4])
+
+
+def _entita(dxf: bytes):
+    with tempfile.TemporaryDirectory() as tmp:  # readfile gestisce da solo codifica e CRLF
+        path = Path(tmp) / "o.dxf"
+        path.write_bytes(dxf)
+        return list(ezdxf.readfile(str(path)).modelspace())
+
+
+def test_chiudi_rettangolo_di_4_line_in_una_polilinea_chiusa():
+    out, info = chiudi_contorni(_dxf(_quattro_line))
+    assert info == {"anelli": 1, "entita_unite": 4, "entita_libere": 0}
+    ents = _entita(out)
+    assert [e.dxftype() for e in ents] == ["LWPOLYLINE"] and ents[0].closed
+    xs = [p[0] for p in ents[0].get_points()]
+    ys = [p[1] for p in ents[0].get_points()]
+    assert (min(xs), max(xs), min(ys), max(ys)) == (0, 20, 0, 10)  # bbox invariato
+
+
+def test_chiudi_asola_line_e_arc_ha_bulge():
+    def asola(msp):  # asola 20x10: due LINE orizzontali + due semicerchi r=5
+        msp.add_line((5, 0), (15, 0))
+        msp.add_arc((15, 5), 5, -90, 90)
+        msp.add_line((15, 10), (5, 10))
+        msp.add_arc((5, 5), 5, 90, 270)
+    out, info = chiudi_contorni(_dxf(asola))
+    assert info["anelli"] == 1 and info["entita_unite"] == 4
+    ents = _entita(out)
+    assert len(ents) == 1 and ents[0].closed
+    assert any(abs(p[4]) > 1e-6 for p in ents[0].get_points())  # gli archi diventano bulge
+
+
+def test_dxf_gia_chiuso_resta_identico():
+    def chiuso(msp):
+        msp.add_lwpolyline([(0, 0), (20, 0), (20, 10), (0, 10)], close=True)
+        msp.add_circle((10, 5), 2)
+    dxf = _dxf(chiuso)
+    out, info = chiudi_contorni(dxf)
+    assert out == dxf and info["anelli"] == 0
+
+
+def test_line_isolata_resta_e_byte_identici():
+    dxf = _dxf(lambda msp: msp.add_line((0, 0), (10, 0)))
+    out, info = chiudi_contorni(dxf)
+    assert out == dxf and info["anelli"] == 0 and info["entita_libere"] == 1
+
+
+def test_byte_non_dxf_ritornati_identici():
+    brutto = b"questo non e' un dxf"
+    out, info = chiudi_contorni(brutto)
+    assert out == brutto and info["anelli"] == 0
+
+
+def test_preview_di_quattro_line_e_una_sola_entita():
+    resp = _dxf_preview(_dxf(_quattro_line))
+    assert resp["entita"] == 1 and resp["larghezza_mm"] == 20 and resp["altezza_mm"] == 10
+
+
+@pytest.mark.parametrize("band", [0.1, 0.3])
+def test_chiudi_build_dxf_compare_banda_larga_con_4_line(band):
+    # rettangolo scuro 20x10 mm su bianco, 20 px/mm; disegno = 4 LINE aperte
+    ppm = 20.0
+    img = np.full((int(40 * ppm), int(60 * ppm)), 255, np.uint8)
+    cx, cy = img.shape[1] // 2, img.shape[0] // 2
+    cv2.rectangle(img, (cx - int(10 * ppm), cy - int(5 * ppm)),
+                  (cx + int(10 * ppm), cy + int(5 * ppm)), 0, -1)
+    dxf = _dxf(_quattro_line)
+    ris = build_dxf_compare(img, dxf, px_per_mm=ppm, band_mm=band)
+    assert ris["outputs"]["dxf.points_in_pct"] > 90.0
+    # il disegno nella ricetta e' quello chiuso, non l'originale
+    import base64
+    salvato = base64.b64decode(ris["files"]["disegno.dxf"])
+    assert salvato != dxf and hashlib.sha256(salvato).hexdigest() == \
+        ris["graph"]["meta"]["dxf"]["disegno"]["sha256"]

src/vision_worker/tests/test_dxf_compare.py

@@ -80,3 +80,67 @@ async def test_dxf_compare_immagine_non_decodificabile_e_422():
 async def test_dxf_compare_parametro_fuori_range_e_422():
     response = await _post(_png(a_scene(0.0)), SAMPLE_DXF.read_bytes(), polarity="grigio")
     assert response.status_code == 422
+
+
+# --- #101: POST /dxf/preview ---------------------------------------------------
+
+def _rect_dxf(width: float, height: float, y0: float = 3.0) -> bytes:
+    """DXF minimo con ezdxf: un rettangolo chiuso, y in alto rispetto a 0."""
+    import ezdxf
+    doc = ezdxf.new()
+    doc.modelspace().add_lwpolyline(
+        [(1, y0), (1 + width, y0), (1 + width, y0 + height), (1, y0 + height)], close=True,
+    )
+    buffer = io.StringIO()
+    doc.write(buffer)
+    return buffer.getvalue().encode("utf-8")
+
+
+def _post_preview(dxf: bytes):
+    # TestClient sincrono: non serve pytest-asyncio (assente nel venv del worker)
+    from fastapi.testclient import TestClient
+    return TestClient(app).post(
+        "/dxf/preview", files={"dxf": ("d.dxf", dxf, "application/octet-stream")},
+    )
+
+
+def test_dxf_preview_rettangolo_10x5():
+    resp = _post_preview(_rect_dxf(10, 5))
+    assert resp.status_code == 200, resp.text
+    body = resp.json()
+    assert body["larghezza_mm"] == 10 and body["altezza_mm"] == 5
+    assert body["entita"] == 1 and body["punti"] == sum(len(c) for c in body["contorni"])
+    # y ribaltata: il rettangolo stava a y 3..8 nel DXF, ora a -8..-3 (asse verso il basso)
+    assert body["bbox"] == {"xmin": 1, "ymin": -8, "xmax": 11, "ymax": -3}
+    ring = body["contorni"][0]
+    assert ring[0] == ring[-1]  # contorno chiuso: primo == ultimo
+    assert all(-8 <= y <= -3 for _, y in ring)
+
+
+@pytest.mark.parametrize("content", [b"", b"questo non e' un dxf"])
+def test_dxf_preview_illeggibile_e_422(content):
+    resp = _post_preview(content)
+    assert resp.status_code == 422
+    assert resp.json()["detail"].startswith("DXF")
+
+
+def test_dxf_preview_senza_geometria_e_422():
+    import ezdxf
+    doc = ezdxf.new()
+    buffer = io.StringIO()
+    doc.write(buffer)
+    resp = _post_preview(buffer.getvalue().encode("utf-8"))
+    assert resp.status_code == 422
+    assert "senza geometria" in resp.json()["detail"]
+
+
+def test_dxf_preview_decima_oltre_il_tetto(monkeypatch):
+    from src.vision_worker import main
+    monkeypatch.setattr(main, "_PREVIEW_MAX_POINTS", 50)
+    import ezdxf
+    doc = ezdxf.new()
+    doc.modelspace().add_circle((0, 0), 20)
+    buffer = io.StringIO()
+    doc.write(buffer)
+    full = main._dxf_preview(buffer.getvalue().encode("utf-8"))
+    assert full["punti"] <= 50 + 1 and full["larghezza_mm"] == pytest.approx(40, abs=0.01)  # dimensioni dai punti completi