Improve GIS import and add measurement tools

Components/Pages/Home.razor

@@ -5,6 +5,7 @@
 @inject OfficialCadastreService OfficialCadastreService
 @inject LocationSearchService LocationSearchService
 @inject AzureMapsService AzureMapsService
+@inject ProjectStorageService ProjectStorageService
 @implements IAsyncDisposable
 
 <PageTitle>LME Mappe Catastali</PageTitle>
@@ -156,24 +157,66 @@
                             <span>Carica KML, KMZ o GeoJSON</span>
                             <input id="gisFileInput" type="file" accept=".kml,.kmz,.geojson,.json,application/vnd.google-earth.kml+xml,application/vnd.google-earth.kmz,application/geo+json" />
                         </label>
+                        <label class="toggle-line project-save-option">
+                            <input type="checkbox" checked="@ImportParcelsOnly" @onchange="ToggleImportParcelsOnly" />
+                            <span>KML/KMZ: importa solo le particelle</span>
+                        </label>
+                        <label class="toggle-line project-save-option">
+                            <input type="checkbox" checked="@ShowImportedMeasurements" @onchange="ToggleImportedMeasurements" />
+                            <span>Mostra misure dei file caricati</span>
+                        </label>
                         <div class="button-row">
                             <button @onclick="FitImportedLayers">Inquadra</button>
                             <button class="secondary-command" @onclick="ClearImportedLayers">Pulisci</button>
                         </div>
 
-                        <h2>Progetti e POI</h2>
+                        <h2>Archivio progetti</h2>
                         <label>
-                            Nome
-                            <input @bind="ProjectName" @bind:event="oninput" placeholder="Nome progetto o POI" />
+                            Nome progetto
+                            <input @bind="NewProjectName" @bind:event="oninput" placeholder="Es. Rilievo San Nicola" maxlength="80" />
+                        </label>
+                        <label class="toggle-line project-save-option">
+                            <input type="checkbox" @bind="IncludeCadastralParcels" />
+                            <span>Includi le particelle catastali rosse</span>
+                        </label>
+                        <button class="primary-command" @onclick="SaveProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(NewProjectName))">Salva progetto</button>
+
+                        <label>
+                            Progetto salvato
+                            <select value="@SelectedProjectId" @onchange="SelectProject" disabled="@(Projects.Count == 0 || ProjectBusy)">
+                                <option value="">Seleziona un progetto</option>
+                                @foreach (var project in Projects)
+                                {
+                                    <option value="@project.Id">@project.Name - @project.UpdatedAt.ToLocalTime().ToString("dd/MM/yyyy HH:mm")</option>
+                                }
+                            </select>
+                        </label>
+                        <div class="button-row">
+                            <button @onclick="LoadProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Carica</button>
+                            <button class="danger-command" @onclick="DeleteProject" disabled="@(ProjectBusy || string.IsNullOrWhiteSpace(SelectedProjectId))">Elimina</button>
+                        </div>
+                        <div class="project-archive-state">@ProjectArchiveMessage</div>
+
+                        <h2>Misura e disegna</h2>
+                        <div class="measurement-mode-grid" aria-label="Strumenti di misura">
+                            <button @onclick='() => StartMeasurementDrawing("area")'>Area</button>
+                            <button @onclick='() => StartMeasurementDrawing("distance")'>Distanza</button>
+                            <button @onclick='() => StartMeasurementDrawing("circle")'>Cerchio</button>
+                        </div>
+                        <label class="toggle-line project-save-option">
+                            <input type="checkbox" checked="@ShowDrawingMeasurements" @onchange="ToggleDrawingMeasurements" />
+                            <span>Mostra superficie, perimetro e lati</span>
+                        </label>
+                        <button class="secondary-command" aria-pressed="@DrawToolsVisible" @onclick="ToggleDrawTools">
+                            @(DrawToolsVisible ? "Nascondi strumenti completi" : "Mostra strumenti completi")
+                        </button>
+
+                        <h2>POI</h2>
+                        <label>
+                            Nome POI
+                            <input @bind="PoiName" @bind:event="oninput" placeholder="Nome del punto" />
                         </label>
                         <button class="primary-command" @onclick="AddProjectMarker">Aggiungi POI al centro mappa</button>
-                        <button class="secondary-command" aria-pressed="@DrawToolsVisible" @onclick="ToggleDrawTools">
-                            @(DrawToolsVisible ? "Nascondi strumenti di disegno" : "Mostra strumenti di disegno")
-                        </button>
-                        <div class="button-row">
-                            <button @onclick="SaveWorkspace">Salva</button>
-                            <button @onclick="LoadWorkspace">Carica</button>
-                        </div>
                         <button class="danger-command" @onclick="ClearDrawings">Elimina disegni e POI</button>
                     </section>
                 }
@@ -268,7 +311,10 @@
 @code {
     private string ActiveTab { get; set; } = "map";
     private string SearchText { get; set; } = string.Empty;
-    private string ProjectName { get; set; } = string.Empty;
+    private string NewProjectName { get; set; } = string.Empty;
+    private string PoiName { get; set; } = string.Empty;
+    private string SelectedProjectId { get; set; } = string.Empty;
+    private string ProjectArchiveMessage { get; set; } = "Nessun progetto salvato.";
     private string Status { get; set; } = "online";
     private string SelectedBaseLayer { get; set; } = "satellite";
     private string GoogleMapsApiKey { get; set; } = string.Empty;
@@ -284,6 +330,11 @@
     private bool DrawToolsVisible { get; set; }
     private bool TrailEnabled { get; set; }
     private bool LayerPanelOpen { get; set; }
+    private bool IncludeCadastralParcels { get; set; } = true;
+    private bool ImportParcelsOnly { get; set; } = true;
+    private bool ShowImportedMeasurements { get; set; }
+    private bool ShowDrawingMeasurements { get; set; } = true;
+    private bool ProjectBusy { get; set; }
     private CancellationTokenSource? CatalogCancellation { get; set; }
     private CancellationTokenSource? GpsLookupCancellation { get; set; }
     private long LastGpsLookupAt;
@@ -293,6 +344,7 @@
     private IReadOnlyList<MunicipalityOption> Municipalities { get; set; } = [];
     private IReadOnlyList<string> Sheets { get; set; } = [];
     private IReadOnlyList<ParcelOption> Parcels { get; set; } = [];
+    private IReadOnlyList<MapProjectSummary> Projects { get; set; } = [];
 
     private MunicipalityOption? SelectedMunicipality =>
         Municipalities.FirstOrDefault(item => item.Code == SelectedMunicipalityCode);
@@ -354,6 +406,8 @@
         {
             CatalogMessage = $"Catalogo Comuni non disponibile: {error.Message}";
         }
+
+        await RefreshProjectsAsync();
     }
 
     protected override async Task OnAfterRenderAsync(bool firstRender)
@@ -361,6 +415,32 @@
         if (firstRender)
         {
             await JS.InvokeVoidAsync("lmeMap.init");
+            await MigrateLegacyProjectAsync();
+        }
+    }
+
+    private async Task MigrateLegacyProjectAsync()
+    {
+        try
+        {
+            var legacySnapshot = await JS.InvokeAsync<string?>("lmeMap.getLegacyProjectSnapshot");
+            if (string.IsNullOrWhiteSpace(legacySnapshot))
+            {
+                return;
+            }
+
+            var migrated = await ProjectStorageService.SaveAsync(
+                "Progetto precedente",
+                legacySnapshot,
+                false);
+            await JS.InvokeVoidAsync("lmeMap.clearLegacyProjectSnapshot");
+            await RefreshProjectsAsync();
+            SelectedProjectId = migrated.Id;
+            await InvokeAsync(StateHasChanged);
+        }
+        catch
+        {
+            // The legacy value remains available and migration can be retried at the next start.
         }
     }
 
@@ -371,6 +451,10 @@
         {
             LayerPanelOpen = false;
         }
+        if (tab == "projects")
+        {
+            await RefreshProjectsAsync();
+        }
         await Task.Delay(30);
         await JS.InvokeVoidAsync("lmeMap.resize");
     }
@@ -665,7 +749,37 @@
 
     private Task FitImportedLayers() => JS.InvokeVoidAsync("lmeMap.fitImported").AsTask();
     private Task ClearImportedLayers() => JS.InvokeVoidAsync("lmeMap.clearImported").AsTask();
-    private Task AddProjectMarker() => JS.InvokeVoidAsync("lmeMap.addProjectMarker", ProjectName).AsTask();
+    private Task AddProjectMarker() => JS.InvokeVoidAsync("lmeMap.addProjectMarker", PoiName).AsTask();
+
+    private async Task ToggleImportParcelsOnly(ChangeEventArgs args)
+    {
+        ImportParcelsOnly = (bool?)args.Value == true;
+        await JS.InvokeVoidAsync("lmeMap.setImportParcelOnly", ImportParcelsOnly);
+    }
+
+    private async Task ToggleImportedMeasurements(ChangeEventArgs args)
+    {
+        ShowImportedMeasurements = (bool?)args.Value == true;
+        await JS.InvokeVoidAsync("lmeMap.setImportedMeasurementsVisible", ShowImportedMeasurements);
+    }
+
+    private async Task ToggleDrawingMeasurements(ChangeEventArgs args)
+    {
+        ShowDrawingMeasurements = (bool?)args.Value == true;
+        await JS.InvokeVoidAsync("lmeMap.setDrawingMeasurementsVisible", ShowDrawingMeasurements);
+    }
+
+    private async Task StartMeasurementDrawing(string mode)
+    {
+        DrawToolsVisible = false;
+        await JS.InvokeVoidAsync("lmeMap.setDrawToolsVisible", false);
+        ActiveTab = "map";
+        LayerPanelOpen = false;
+        await Task.Delay(30);
+        await JS.InvokeVoidAsync("lmeMap.resize");
+        await JS.InvokeVoidAsync("lmeMap.startMeasurementDrawing", mode);
+    }
+
     private async Task ToggleDrawTools()
     {
         DrawToolsVisible = !DrawToolsVisible;
@@ -678,8 +792,136 @@
     }
 
     private Task ClearDrawings() => JS.InvokeVoidAsync("lmeMap.clearDrawings").AsTask();
-    private Task SaveWorkspace() => JS.InvokeVoidAsync("lmeMap.saveWorkspace").AsTask();
-    private Task LoadWorkspace() => JS.InvokeVoidAsync("lmeMap.loadWorkspace").AsTask();
+
+    private async Task RefreshProjectsAsync()
+    {
+        try
+        {
+            Projects = await ProjectStorageService.GetProjectsAsync();
+            if (Projects.All(project => project.Id != SelectedProjectId))
+            {
+                SelectedProjectId = string.Empty;
+            }
+            ProjectArchiveMessage = Projects.Count == 0
+                ? "Nessun progetto salvato."
+                : $"{Projects.Count} {(Projects.Count == 1 ? "progetto salvato" : "progetti salvati")} nell'archivio interno.";
+        }
+        catch (Exception error)
+        {
+            ProjectArchiveMessage = $"Archivio non disponibile: {error.GetBaseException().Message}";
+        }
+    }
+
+    private Task SelectProject(ChangeEventArgs args)
+    {
+        SelectedProjectId = args.Value?.ToString() ?? string.Empty;
+        return Task.CompletedTask;
+    }
+
+    private async Task SaveProject()
+    {
+        var name = NewProjectName.Trim();
+        if (string.IsNullOrWhiteSpace(name))
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", "Inserisci il nome del progetto.");
+            return;
+        }
+
+        var existing = Projects.FirstOrDefault(project =>
+            string.Equals(project.Name, name, StringComparison.CurrentCultureIgnoreCase));
+        if (existing is not null
+            && !await JS.InvokeAsync<bool>("confirm", $"Il progetto '{existing.Name}' esiste gia. Sovrascriverlo?"))
+        {
+            return;
+        }
+
+        ProjectBusy = true;
+        try
+        {
+            var snapshot = await JS.InvokeAsync<string>("lmeMap.createProjectSnapshot", IncludeCadastralParcels);
+            var saved = await ProjectStorageService.SaveAsync(
+                name,
+                snapshot,
+                IncludeCadastralParcels,
+                existing?.Id);
+            await RefreshProjectsAsync();
+            SelectedProjectId = saved.Id;
+            NewProjectName = saved.Name;
+            await JS.InvokeVoidAsync(
+                "lmeMap.showInfo",
+                IncludeCadastralParcels
+                    ? $"Progetto salvato: {saved.Name}, incluse le particelle rosse."
+                    : $"Progetto salvato: {saved.Name}, senza particelle rosse.");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto non salvato: {error.GetBaseException().Message}");
+        }
+        finally
+        {
+            ProjectBusy = false;
+        }
+    }
+
+    private async Task LoadProject()
+    {
+        var project = Projects.FirstOrDefault(item => item.Id == SelectedProjectId);
+        if (project is null)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", "Seleziona il progetto da caricare.");
+            return;
+        }
+
+        ProjectBusy = true;
+        try
+        {
+            var snapshot = await ProjectStorageService.LoadAsync(project.Id);
+            await JS.InvokeVoidAsync("lmeMap.loadProjectSnapshot", snapshot, project.Name);
+            NewProjectName = project.Name;
+            IncludeCadastralParcels = project.IncludesCadastralParcels;
+            ActiveTab = "map";
+            await Task.Delay(30);
+            await JS.InvokeVoidAsync("lmeMap.resize");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto non caricato: {error.GetBaseException().Message}");
+        }
+        finally
+        {
+            ProjectBusy = false;
+        }
+    }
+
+    private async Task DeleteProject()
+    {
+        var project = Projects.FirstOrDefault(item => item.Id == SelectedProjectId);
+        if (project is null)
+        {
+            return;
+        }
+        if (!await JS.InvokeAsync<bool>("confirm", $"Eliminare definitivamente il progetto '{project.Name}'?"))
+        {
+            return;
+        }
+
+        ProjectBusy = true;
+        try
+        {
+            await ProjectStorageService.DeleteAsync(project.Id);
+            SelectedProjectId = string.Empty;
+            await RefreshProjectsAsync();
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto eliminato: {project.Name}.");
+        }
+        catch (Exception error)
+        {
+            await JS.InvokeVoidAsync("lmeMap.showInfo", $"Progetto non eliminato: {error.GetBaseException().Message}");
+        }
+        finally
+        {
+            ProjectBusy = false;
+        }
+    }
     private Task CenterOnGps() => JS.InvokeVoidAsync("lmeMap.centerOnGps").AsTask();
     private async Task ToggleTrail(ChangeEventArgs args)
     {

LMEMappeCatastaliApp.csproj

@@ -28,8 +28,8 @@
         <ApplicationId>com.companyname.lmemappecatastaliapp</ApplicationId>
 
         <!-- Versions -->
-        <ApplicationDisplayVersion>0.2.5</ApplicationDisplayVersion>
-        <ApplicationVersion>9</ApplicationVersion>
+        <ApplicationDisplayVersion>0.2.8</ApplicationDisplayVersion>
+        <ApplicationVersion>12</ApplicationVersion>
 
         <!-- To develop, package, and publish an app to the Microsoft Store, see: https://aka.ms/MauiTemplateUnpackaged -->
         <WindowsPackageType>None</WindowsPackageType>

MauiProgram.cs

@@ -21,6 +21,7 @@ public static class MauiProgram
         builder.Services.AddSingleton<OfficialCadastreService>();
         builder.Services.AddSingleton<LocationSearchService>();
         builder.Services.AddSingleton<AzureMapsService>();
+        builder.Services.AddSingleton<ProjectStorageService>();
 
 #if DEBUG
         builder.Services.AddBlazorWebViewDeveloperTools();

README.md

@@ -9,10 +9,15 @@ App .NET MAUI Blazor Hybrid per Android, iOS, Mac Catalyst e Windows, pensata pe
 - Trasparenza configurabile del layer catastale.
 - Interrogazione WMS con click/tap sulla mappa.
 - Import di file KML, KMZ, GeoJSON e JSON.
+- Import GeoJSON compatibile con BOM, geometrie singole, array, FeatureCollection e coordinate Web Mercator EPSG:3857.
+- Filtro KML/KMZ `solo particelle` attivo per impostazione predefinita, con esclusione di GroundOverlay e perimetri del foglio.
 - Inquadramento e pulizia dei layer importati.
 - Disegno di marker, linee, poligoni e rettangoli.
+- Modalita rapide Area, Distanza e Cerchio con superficie, perimetro, raggio, circonferenza e lunghezza dei singoli lati.
+- Misure permanenti attivabili anche sui layer importati da KML, KMZ e GeoJSON.
 - Toolbar di disegno completa di icone, modifica, eliminazione singola e pulizia di tutti i disegni/POI.
-- POI/progetti salvabili in locale con `localStorage`.
+- Archivio multiprogetto nella cartella privata dell'app, con nome, selezione da elenco, sovrascrittura ed eliminazione.
+- Ogni progetto salva file GIS, POI, disegni, traccia e inquadratura; l'inclusione delle particelle catastali rosse e' opzionale.
 - GPS nativo MAUI ad alta precisione con permessi Android/iOS.
 - Marker posizione, cerchio accuratezza in metri, tracciamento percorso.
 - Controllo se la posizione GPS cade dentro un poligono importato o disegnato.
@@ -29,6 +34,7 @@ App .NET MAUI Blazor Hybrid per Android, iOS, Mac Catalyst e Windows, pensata pe
 - Comandi separati per rimuovere le particelle selezionate o pulire importazioni, disegni, POI e traccia GPS.
 - Anteprima WMS ufficiale mostrata dentro l'app senza aprire una nuova finestra Android.
 - Confini delle particelle selezionate e della particella GPS sovrapposti anche all'anteprima WMS corrente.
+- Richieste WMS catastali in EPSG:4258 compatibili con il servizio AdE; i numeri particella sono visibili alle scale di dettaglio consentite dal servizio (circa zoom 17 o superiore).
 - Collegamenti separati al Geoportale pubblico e all'Area riservata AdE per CAPTCHA, SPID/CIE e download ufficiali.
 
 ## Limite ufficiale AdE da considerare

Services/AzureMapsService.cs

@@ -13,7 +13,7 @@ public sealed class AzureMapsService
 
     public AzureMapsService()
     {
-        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2.5");
+        _httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("LMEMappeCatastali/0.2.8");
         _httpClient.DefaultRequestHeaders.Accept.ParseAdd("application/json");
     }
 

Services/ProjectStorageService.cs

@@ -0,0 +1,202 @@
+using System.Text;
+using System.Text.Json;
+
+namespace LMEMappeCatastaliApp.Services;
+
+public sealed class ProjectStorageService
+{
+    private const string ProjectExtension = ".lmeproject.json";
+    private readonly SemaphoreSlim _gate = new(1, 1);
+    private readonly JsonSerializerOptions _jsonOptions = new(JsonSerializerDefaults.Web)
+    {
+        WriteIndented = true
+    };
+
+    private string ProjectsDirectory => Path.Combine(FileSystem.AppDataDirectory, "Projects");
+
+    public async Task<IReadOnlyList<MapProjectSummary>> GetProjectsAsync()
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var files = await ReadProjectFilesAsync();
+            return files
+                .Select(item => item.Document.ToSummary())
+                .OrderByDescending(item => item.UpdatedAt)
+                .ThenBy(item => item.Name, StringComparer.CurrentCultureIgnoreCase)
+                .ToArray();
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    public async Task<MapProjectSummary> SaveAsync(
+        string name,
+        string snapshotJson,
+        bool includesCadastralParcels,
+        string? projectId = null)
+    {
+        var normalizedName = NormalizeName(name);
+        using var snapshotDocument = JsonDocument.Parse(snapshotJson);
+        if (snapshotDocument.RootElement.ValueKind != JsonValueKind.Object)
+        {
+            throw new InvalidDataException("I dati della mappa non sono validi.");
+        }
+
+        await _gate.WaitAsync();
+        try
+        {
+            Directory.CreateDirectory(ProjectsDirectory);
+            var files = await ReadProjectFilesAsync();
+            var existing = files.FirstOrDefault(item =>
+                (!string.IsNullOrWhiteSpace(projectId) && item.Document.Id == projectId)
+                || string.Equals(item.Document.Name, normalizedName, StringComparison.CurrentCultureIgnoreCase));
+
+            var now = DateTimeOffset.UtcNow;
+            var id = existing?.Document.Id ?? Guid.NewGuid().ToString("N");
+            var document = new MapProjectDocument
+            {
+                SchemaVersion = 1,
+                Id = id,
+                Name = normalizedName,
+                CreatedAt = existing?.Document.CreatedAt ?? now,
+                UpdatedAt = now,
+                IncludesCadastralParcels = includesCadastralParcels,
+                Map = snapshotDocument.RootElement.Clone()
+            };
+
+            var path = existing?.Path ?? Path.Combine(ProjectsDirectory, BuildFileName(normalizedName, id));
+            var temporaryPath = path + ".tmp";
+            try
+            {
+                await File.WriteAllTextAsync(
+                    temporaryPath,
+                    JsonSerializer.Serialize(document, _jsonOptions),
+                    new UTF8Encoding(false));
+                File.Move(temporaryPath, path, true);
+            }
+            finally
+            {
+                if (File.Exists(temporaryPath))
+                {
+                    File.Delete(temporaryPath);
+                }
+            }
+
+            return document.ToSummary();
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    public async Task<string> LoadAsync(string projectId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var project = (await ReadProjectFilesAsync())
+                .FirstOrDefault(item => item.Document.Id == projectId)
+                ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
+            return project.Document.Map.GetRawText();
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    public async Task DeleteAsync(string projectId)
+    {
+        await _gate.WaitAsync();
+        try
+        {
+            var project = (await ReadProjectFilesAsync())
+                .FirstOrDefault(item => item.Document.Id == projectId)
+                ?? throw new FileNotFoundException("Il progetto selezionato non esiste piu'.");
+            File.Delete(project.Path);
+        }
+        finally
+        {
+            _gate.Release();
+        }
+    }
+
+    private async Task<IReadOnlyList<ProjectFileEntry>> ReadProjectFilesAsync()
+    {
+        Directory.CreateDirectory(ProjectsDirectory);
+        var projects = new List<ProjectFileEntry>();
+        foreach (var path in Directory.EnumerateFiles(ProjectsDirectory, $"*{ProjectExtension}"))
+        {
+            try
+            {
+                await using var stream = File.OpenRead(path);
+                var document = await JsonSerializer.DeserializeAsync<MapProjectDocument>(stream, _jsonOptions);
+                if (document is not null
+                    && !string.IsNullOrWhiteSpace(document.Id)
+                    && !string.IsNullOrWhiteSpace(document.Name)
+                    && document.Map.ValueKind == JsonValueKind.Object)
+                {
+                    projects.Add(new ProjectFileEntry(path, document));
+                }
+            }
+            catch (JsonException)
+            {
+                // A damaged project is ignored so the remaining archive stays usable.
+            }
+            catch (IOException)
+            {
+            }
+        }
+
+        return projects;
+    }
+
+    private static string NormalizeName(string name)
+    {
+        var normalized = string.Join(' ', (name ?? string.Empty).Split(
+            [' ', '\t', '\r', '\n'],
+            StringSplitOptions.RemoveEmptyEntries));
+        if (string.IsNullOrWhiteSpace(normalized))
+        {
+            throw new ArgumentException("Inserisci il nome del progetto.");
+        }
+
+        return normalized.Length <= 80 ? normalized : normalized[..80];
+    }
+
+    private static string BuildFileName(string name, string id)
+    {
+        var invalid = Path.GetInvalidFileNameChars().ToHashSet();
+        var safeName = new string(name
+            .Select(character => invalid.Contains(character) ? '-' : character)
+            .ToArray())
+            .Trim(' ', '.');
+        safeName = string.IsNullOrWhiteSpace(safeName) ? "Progetto" : safeName;
+        return $"{safeName}--{id[..8]}{ProjectExtension}";
+    }
+
+    private sealed record ProjectFileEntry(string Path, MapProjectDocument Document);
+
+    private sealed class MapProjectDocument
+    {
+        public int SchemaVersion { get; init; }
+        public string Id { get; init; } = string.Empty;
+        public string Name { get; init; } = string.Empty;
+        public DateTimeOffset CreatedAt { get; init; }
+        public DateTimeOffset UpdatedAt { get; init; }
+        public bool IncludesCadastralParcels { get; init; }
+        public JsonElement Map { get; init; }
+
+        public MapProjectSummary ToSummary() => new(Id, Name, UpdatedAt, IncludesCadastralParcels);
+    }
+}
+
+public sealed record MapProjectSummary(
+    string Id,
+    string Name,
+    DateTimeOffset UpdatedAt,
+    bool IncludesCadastralParcels);

wwwroot/css/app.css

@@ -459,6 +459,69 @@ label {
     height: 18px;
 }
 
+.project-save-option {
+    padding: 10px 11px;
+    border: 1px solid var(--line);
+    border-radius: 6px;
+    background: #fff;
+}
+
+.project-archive-state {
+    color: var(--muted);
+    font-size: 11px;
+    line-height: 1.35;
+}
+
+.measurement-mode-grid {
+    display: grid;
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+    gap: 7px;
+}
+
+.measurement-mode-grid button {
+    min-width: 0;
+    padding: 0 8px;
+}
+
+.lme-measure-label {
+    width: 0 !important;
+    height: 0 !important;
+    border: 0 !important;
+    background: transparent !important;
+    pointer-events: none !important;
+}
+
+.lme-measure-label span {
+    position: absolute;
+    transform: translate(-50%, -50%);
+    border: 1px solid rgba(23, 33, 43, 0.35);
+    border-radius: 4px;
+    padding: 2px 5px;
+    background: rgba(255, 255, 255, 0.92);
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.24);
+    color: #17212b;
+    font-size: 10px;
+    font-weight: 800;
+    line-height: 1.25;
+    white-space: nowrap;
+}
+
+.lme-measure-label.imported span {
+    border-color: #15806a;
+    color: #0c5749;
+}
+
+.lme-measure-label.drawing span {
+    border-color: #d35d0b;
+    color: #7c2d12;
+}
+
+.lme-measure-label.side span {
+    padding: 1px 4px;
+    font-size: 9px;
+    font-weight: 700;
+}
+
 .map-info {
     position: absolute;
     left: 12px;