merge(dev): Re-apply changes after conflict resolution

# Conflicts:
#	frontend/src/app/app.config.ts
#	frontend/src/app/components/filament-table/filament-table.component.html
#	frontend/src/app/components/filament-table/filament-table.component.ts
#	frontend/src/app/services/filament.service.ts

backend/API/Controllers/CostAnalysisController.cs

@@ -1,108 +0,0 @@
-using Extrudex.API.DTOs.PrintJobs;
-using Extrudex.Domain.Interfaces;
-using Microsoft.AspNetCore.Mvc;
-
-namespace Extrudex.API.Controllers;
-
-/// <summary>
-/// Controller for cost analysis endpoints. Provides spool-level
-/// cost breakdowns and aggregated COGS reporting.
-/// </summary>
-[ApiController]
-[Route("api/cost-analysis")]
-public class CostAnalysisController : ControllerBase
-{
-    private readonly ICostPerPrintService _costService;
-    private readonly ILogger<CostAnalysisController> _logger;
-
-    /// <summary>
-    /// Initializes a new instance of the <see cref="CostAnalysisController"/> class.
-    /// </summary>
-    /// <param name="costService">The cost-per-print calculation service.</param>
-    /// <param name="logger">The logger for diagnostic output.</param>
-    public CostAnalysisController(
-        ICostPerPrintService costService,
-        ILogger<CostAnalysisController> logger)
-    {
-        _costService = costService;
-        _logger = logger;
-    }
-
-    // ── POST /api/cost-analysis/spool ────────────────────────────
-
-    /// <summary>
-    /// Calculates cost breakdowns for all print jobs associated with a specific spool.
-    /// Returns per-job costs plus an aggregated total. Jobs with missing cost data
-    /// include warnings and null cost fields — the endpoint never throws for missing data.
-    /// </summary>
-    /// <param name="request">The request containing the spool identifier.</param>
-    /// <returns>A spool-level cost summary with per-job breakdowns.</returns>
-    /// <response code="200">Returns the spool cost breakdown with per-job details.</response>
-    /// <response code="404">If the spool has no print jobs.</response>
-    [HttpPost("spool")]
-    [ProducesResponseType(typeof(SpoolCostResponse), StatusCodes.Status200OK)]
-    [ProducesResponseType(StatusCodes.Status404NotFound)]
-    public async Task<ActionResult<SpoolCostResponse>> CalculateSpoolCost([FromBody] SpoolCostRequest request)
-    {
-        _logger.LogDebug("Calculating cost breakdown for spool {SpoolId}", request.SpoolId);
-
-        var results = await _costService.CalculateBySpoolAsync(request.SpoolId);
-
-        if (results.Count == 0)
-        {
-            return NotFound(new { error = $"No print jobs found for spool with ID '{request.SpoolId}'." });
-        }
-
-        // Build the spool-level summary
-        var firstResult = results[0];
-        var jobResponses = results.Select(MapCostToResponse).ToList();
-
-        // Aggregate total cost and grams — only include jobs that have a valid cost
-        var calculableJobs = results.Where(r => r.CostPerPrint.HasValue).ToList();
-        var totalCost = calculableJobs.Count == results.Count
-            ? Math.Round(calculableJobs.Sum(r => r.CostPerPrint!.Value), 4)
-            : (decimal?)null;
-
-        var aggregateWarnings = new List<string>();
-        if (calculableJobs.Count < results.Count)
-        {
-            aggregateWarnings.Add(
-                $"{results.Count - calculableJobs.Count} of {results.Count} print jobs have missing cost data. " +
-                "Total cost reflects only jobs with complete data.");
-        }
-
-        var response = new SpoolCostResponse
-        {
-            SpoolId = request.SpoolId,
-            SpoolSerial = firstResult.SpoolSerial,
-            PurchasePrice = firstResult.PurchasePrice,
-            WeightTotalGrams = firstResult.WeightTotalGrams,
-            CostPerGram = firstResult.CostPerGram,
-            TotalGramsConsumed = results.Sum(r => r.GramsDerived),
-            TotalCost = totalCost,
-            JobCount = results.Count,
-            Jobs = jobResponses,
-            Warnings = aggregateWarnings
-        };
-
-        return Ok(response);
-    }
-
-    /// <summary>
-    /// Maps a domain CostPerPrintResult to an API CostPerPrintResponse DTO.
-    /// </summary>
-    private static CostPerPrintResponse MapCostToResponse(CostPerPrintResult r) => new()
-    {
-        PrintJobId = r.PrintJobId,
-        PrintName = r.PrintName,
-        SpoolId = r.SpoolId,
-        SpoolSerial = r.SpoolSerial,
-        MmExtruded = r.MmExtruded,
-        GramsDerived = r.GramsDerived,
-        PurchasePrice = r.PurchasePrice,
-        WeightTotalGrams = r.WeightTotalGrams,
-        CostPerGram = r.CostPerGram,
-        CostPerPrint = r.CostPerPrint,
-        Warnings = r.Warnings
-    };
-}

backend/API/DTOs/PrintJobs/CostPerPrintDtos.cs

@@ -1,99 +0,0 @@
-using System.ComponentModel.DataAnnotations;
-
-namespace Extrudex.API.DTOs.PrintJobs;
-
-/// <summary>
-/// Response DTO for cost-per-print calculation. Contains the full cost
-/// breakdown and any warnings about missing or incomplete data.
-/// </summary>
-public class CostPerPrintResponse
-{
-    /// <summary>The print job identifier this result belongs to.</summary>
-    public Guid PrintJobId { get; set; }
-
-    /// <summary>Human-readable name of the print job.</summary>
-    public string PrintName { get; set; } = string.Empty;
-
-    /// <summary>The spool identifier that provided filament.</summary>
-    public Guid SpoolId { get; set; }
-
-    /// <summary>Serial number of the spool.</summary>
-    public string SpoolSerial { get; set; } = string.Empty;
-
-    /// <summary>Total millimeters of filament extruded.</summary>
-    public decimal MmExtruded { get; set; }
-
-    /// <summary>Derived grams consumed for this print.</summary>
-    public decimal GramsDerived { get; set; }
-
-    /// <summary>The spool's purchase price. Null if not recorded.</summary>
-    public decimal? PurchasePrice { get; set; }
-
-    /// <summary>The spool's total weight in grams when full.</summary>
-    public decimal? WeightTotalGrams { get; set; }
-
-    /// <summary>Cost per gram of filament. Null if purchase price or total weight is missing.</summary>
-    public decimal? CostPerGram { get; set; }
-
-    /// <summary>Calculated cost of this print job. Null if cost data is incomplete.</summary>
-    public decimal? CostPerPrint { get; set; }
-
-    /// <summary>
-    /// Warnings about missing or incomplete data. Empty when all data is available
-    /// and the calculation succeeded.
-    /// </summary>
-    public List<string> Warnings { get; set; } = new();
-}
-
-/// <summary>
-/// Request DTO for batch cost calculation by spool. Returns cost breakdowns
-/// for all print jobs associated with the specified spool.
-/// </summary>
-public class SpoolCostRequest
-{
-    /// <summary>The unique identifier of the spool to calculate costs for.</summary>
-    [Required(ErrorMessage = "SpoolId is required.")]
-    public Guid SpoolId { get; set; }
-}
-
-/// <summary>
-/// Response DTO for spool-level cost calculation. Contains cost breakdowns
-/// for all print jobs on the spool, plus a total cost summary.
-/// </summary>
-public class SpoolCostResponse
-{
-    /// <summary>The spool identifier.</summary>
-    public Guid SpoolId { get; set; }
-
-    /// <summary>Serial number of the spool.</summary>
-    public string SpoolSerial { get; set; } = string.Empty;
-
-    /// <summary>The spool's purchase price. Null if not recorded.</summary>
-    public decimal? PurchasePrice { get; set; }
-
-    /// <summary>The spool's total weight in grams when full.</summary>
-    public decimal? WeightTotalGrams { get; set; }
-
-    /// <summary>Cost per gram of filament. Null if cost data is incomplete.</summary>
-    public decimal? CostPerGram { get; set; }
-
-    /// <summary>Total grams consumed across all print jobs on this spool.</summary>
-    public decimal TotalGramsConsumed { get; set; }
-
-    /// <summary>Total calculated cost across all print jobs. Null if any job has missing data.</summary>
-    public decimal? TotalCost { get; set; }
-
-    /// <summary>Number of print jobs included in this calculation.</summary>
-    public int JobCount { get; set; }
-
-    /// <summary>
-    /// Individual cost breakdowns per print job. Jobs with missing data
-    /// will have null cost fields and populated warnings.
-    /// </summary>
-    public List<CostPerPrintResponse> Jobs { get; set; } = new();
-
-    /// <summary>
-    /// Aggregate warnings about missing data across all jobs.
-    /// </summary>
-    public List<string> Warnings { get; set; } = new();
-}

backend/API/Jobs/FilamentUsageSyncJob.cs

@@ -1,79 +0,0 @@
-using Extrudex.Domain.Interfaces;
-using Extrudex.Infrastructure.Configuration;
-using Microsoft.Extensions.Hosting;
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
-
-namespace Extrudex.API.Jobs;
-
-/// <summary>
-/// Background job that periodically syncs filament usage data from
-/// Moonraker printers. Runs as a hosted service and polls all active
-/// Moonraker printers on a configurable interval to persist usage
-/// data to the Extrudex database.
-/// 
-/// Configuration is bound from the "FilamentUsageSync" section in
-/// appsettings.json. Set Enabled=false to disable without removing
-/// the service registration.
-/// </summary>
-public class FilamentUsageSyncJob : BackgroundService
-{
-    private readonly IFilamentUsageSyncService _syncService;
-    private readonly FilamentUsageSyncOptions _options;
-    private readonly ILogger<FilamentUsageSyncJob> _logger;
-
-    /// <summary>
-    /// Creates a new FilamentUsageSyncJob.
-    /// </summary>
-    /// <param name="syncService">The service that performs the actual sync logic.</param>
-    /// <param name="options">Configuration options for polling interval and timeouts.</param>
-    /// <param name="logger">Logger for diagnostic output.</param>
-    public FilamentUsageSyncJob(
-        IFilamentUsageSyncService syncService,
-        IOptions<FilamentUsageSyncOptions> options,
-        ILogger<FilamentUsageSyncJob> logger)
-    {
-        _syncService = syncService;
-        _options = options.Value;
-        _logger = logger;
-    }
-
-    /// <inheritdoc />
-    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
-    {
-        if (!_options.Enabled)
-        {
-            _logger.LogInformation("Filament usage sync job is disabled via configuration — exiting");
-            return;
-        }
-
-        _logger.LogInformation(
-            "Filament usage sync job starting — polling every {Interval}",
-            _options.PollingInterval);
-
-        // Delay briefly on startup to allow the web host to fully initialize
-        await Task.Delay(TimeSpan.FromSeconds(10), stoppingToken);
-
-        while (!stoppingToken.IsCancellationRequested)
-        {
-            try
-            {
-                var syncedCount = await _syncService.SyncAllAsync(stoppingToken);
-
-                _logger.LogInformation(
-                    "Filament usage sync completed — {SyncedCount} printer(s) synced. Next sync in {Interval}",
-                    syncedCount, _options.PollingInterval);
-            }
-            catch (Exception ex) when (ex is not OperationCanceledException)
-            {
-                _logger.LogError(ex,
-                    "Error during filament usage sync cycle — will retry in {Interval}",
-                    _options.PollingInterval);
-            }
-
-            await Task.Delay(_options.PollingInterval, stoppingToken);
-        }
-
-        _logger.LogInformation("Filament usage sync job shutting down");
-    }
-}

backend/Dockerfile

@@ -17,9 +17,6 @@ RUN dotnet publish Extrudex.csproj \
 FROM mcr.microsoft.com/dotnet/aspnet:9.0 AS runtime
 WORKDIR /app
 
-# Install curl for health check (not included in aspnet base image)
-RUN apt-get update && apt-get install -y --no-install-recommends curl && rm -rf /var/lib/apt/lists/*
-
 # Non-root user for security
 RUN adduser --disabled-password --gecos "" appuser
 USER appuser

backend/Domain/Interfaces/ICostPerPrintService.cs

@@ -1,76 +0,0 @@
-namespace Extrudex.Domain.Interfaces;
-
-/// <summary>
-/// Service interface for calculating the cost of goods sold (COGS) per print job.
-/// Uses the spool's purchase price and the print job's derived grams consumed
-/// to produce a cost breakdown. Handles missing cost data gracefully by returning
-/// warnings rather than throwing exceptions.
-/// </summary>
-public interface ICostPerPrintService
-{
-    /// <summary>
-    /// Calculates the cost per print for a specific print job.
-    /// </summary>
-    /// <param name="printJobId">The unique identifier of the print job.</param>
-    /// <param name="cancellationToken">Optional cancellation token.</param>
-    /// <returns>
-    /// A <see cref="CostPerPrintResult"/> containing the cost breakdown,
-    /// or warnings if cost data is missing or incomplete.
-    /// </returns>
-    Task<CostPerPrintResult> CalculateAsync(Guid printJobId, CancellationToken cancellationToken = default);
-
-    /// <summary>
-    /// Calculates cost breakdowns for all print jobs associated with a specific spool.
-    /// Useful for spool-level COGS reporting.
-    /// </summary>
-    /// <param name="spoolId">The unique identifier of the spool.</param>
-    /// <param name="cancellationToken">Optional cancellation token.</param>
-    /// <returns>
-    /// A list of <see cref="CostPerPrintResult"/> for each print job on the spool.
-    /// Jobs with missing cost data will include warnings.
-    /// </returns>
-    Task<IReadOnlyList<CostPerPrintResult>> CalculateBySpoolAsync(Guid spoolId, CancellationToken cancellationToken = default);
-}
-
-/// <summary>
-/// Result of a cost-per-print calculation. Contains the cost breakdown
-/// and any warnings about missing or incomplete cost data.
-/// </summary>
-public class CostPerPrintResult
-{
-    /// <summary>The print job identifier this result belongs to.</summary>
-    public Guid PrintJobId { get; set; }
-
-    /// <summary>Human-readable name of the print job.</summary>
-    public string PrintName { get; set; } = string.Empty;
-
-    /// <summary>The spool identifier that provided filament.</summary>
-    public Guid SpoolId { get; set; }
-
-    /// <summary>Serial number of the spool.</summary>
-    public string SpoolSerial { get; set; } = string.Empty;
-
-    /// <summary>Total millimeters of filament extruded.</summary>
-    public decimal MmExtruded { get; set; }
-
-    /// <summary>Derived grams consumed for this print.</summary>
-    public decimal GramsDerived { get; set; }
-
-    /// <summary>The spool's purchase price. Null if not recorded.</summary>
-    public decimal? PurchasePrice { get; set; }
-
-    /// <summary>The spool's total weight in grams when full.</summary>
-    public decimal? WeightTotalGrams { get; set; }
-
-    /// <summary>Cost per gram of filament. Null if purchase price or total weight is missing.</summary>
-    public decimal? CostPerGram { get; set; }
-
-    /// <summary>Calculated cost of this print job. Null if cost data is incomplete.</summary>
-    public decimal? CostPerPrint { get; set; }
-
-    /// <summary>
-    /// Warnings about missing or incomplete data that prevented a full calculation.
-    /// Empty when all data is available and the calculation succeeded.
-    /// </summary>
-    public List<string> Warnings { get; set; } = new();
-}

backend/Domain/Interfaces/IFilamentUsageSyncService.cs

@@ -1,19 +0,0 @@
-namespace Extrudex.Domain.Interfaces;
-
-/// <summary>
-/// Service interface for syncing filament usage data from printers
-/// into the Extrudex database. Handles querying Moonraker printers,
-/// computing derived usage metrics, and persisting updates to spools
-/// and print job records.
-/// </summary>
-public interface IFilamentUsageSyncService
-{
-    /// <summary>
-    /// Performs a single sync cycle: queries all active Moonraker printers,
-    /// fetches their current filament usage data, and persists updates to
-    /// the database.
-    /// </summary>
-    /// <param name="cancellationToken">Cancellation token for graceful shutdown.</param>
-    /// <returns>The number of printers successfully synced.</returns>
-    Task<int> SyncAllAsync(CancellationToken cancellationToken = default);
-}

backend/Domain/Interfaces/IMoonrakerClient.cs

@@ -1,39 +0,0 @@
-namespace Extrudex.Domain.Interfaces;
-
-/// <summary>
-/// Client interface for communicating with Moonraker REST API endpoints
-/// on Klipper-based printers (e.g., Elegoo Centauri Carbon).
-/// Used to retrieve filament usage data, print job status, and
-/// remaining spool weight from the printer.
-/// </summary>
-public interface IMoonrakerClient
-{
-    /// <summary>
-    /// Fetches the current filament usage data from the Moonraker server.
-    /// Returns a dictionary of usage metrics reported by the printer.
-    /// </summary>
-    /// <param name="hostnameOrIp">The printer's hostname or IP address.</param>
-    /// <param name="port">The Moonraker API port (default: 7125).</param>
-    /// <param name="apiKey">Optional API key for authentication.</param>
-    /// <param name="cancellationToken">Cancellation token for the HTTP request.</param>
-    /// <returns>A dictionary of usage metric names to their decimal values.</returns>
-    Task<Dictionary<string, decimal>> GetFilamentUsageAsync(
-        string hostnameOrIp,
-        int port,
-        string? apiKey,
-        CancellationToken cancellationToken = default);
-
-    /// <summary>
-    /// Checks whether the Moonraker server is reachable and responding.
-    /// </summary>
-    /// <param name="hostnameOrIp">The printer's hostname or IP address.</param>
-    /// <param name="port">The Moonraker API port (default: 7125).</param>
-    /// <param name="apiKey">Optional API key for authentication.</param>
-    /// <param name="cancellationToken">Cancellation token for the HTTP request.</param>
-    /// <returns><c>true</c> if the server responded successfully; otherwise <c>false</c>.</returns>
-    Task<bool> IsReachableAsync(
-        string hostnameOrIp,
-        int port,
-        string? apiKey,
-        CancellationToken cancellationToken = default);
-}

backend/Infrastructure/Configuration/FilamentUsageSyncOptions.cs

@@ -1,33 +0,0 @@
-namespace Extrudex.Infrastructure.Configuration;
-
-/// <summary>
-/// Configuration options for the FilamentUsageSync background job.
-/// Bound from appsettings.json under the "FilamentUsageSync" section.
-/// Controls polling interval and per-printer timeout settings.
-/// </summary>
-public class FilamentUsageSyncOptions
-{
-    /// <summary>
-    /// The section name in appsettings.json where these options are bound.
-    /// </summary>
-    public const string SectionName = "FilamentUsageSync";
-
-    /// <summary>
-    /// How often the background job polls printers for usage data.
-    /// Default: 5 minutes. Minimum recommended: 1 minute.
-    /// </summary>
-    public TimeSpan PollingInterval { get; set; } = TimeSpan.FromMinutes(5);
-
-    /// <summary>
-    /// Timeout for individual HTTP requests to a Moonraker printer.
-    /// Default: 30 seconds.
-    /// </summary>
-    public TimeSpan RequestTimeout { get; set; } = TimeSpan.FromSeconds(30);
-
-    /// <summary>
-    /// Whether the sync job is enabled. Set to false to disable
-    /// the background job without removing its registration.
-    /// Default: true.
-    /// </summary>
-    public bool Enabled { get; set; } = true;
-}

backend/Infrastructure/Services/CostPerPrintService.cs

@@ -1,158 +0,0 @@
-using Extrudex.Domain.Interfaces;
-using Extrudex.Infrastructure.Data;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.Extensions.Logging;
-
-namespace Extrudex.Infrastructure.Services;
-
-/// <summary>
-/// Calculates the cost of goods sold (COGS) per print job using the spool's
-/// purchase price and the print job's derived grams consumed.
-///
-/// Formula:
-///   cost_per_gram = purchase_price / weight_total_grams
-///   cost_per_print = grams_derived × cost_per_gram
-///
-/// Handles missing data gracefully — if the spool has no purchase price or
-/// weight recorded, the result includes warnings and null cost fields
-/// instead of throwing exceptions.
-/// </summary>
-public class CostPerPrintService : ICostPerPrintService
-{
-    private readonly ExtrudexDbContext _dbContext;
-    private readonly ILogger<CostPerPrintService> _logger;
-
-    /// <summary>
-    /// Initializes a new instance of the <see cref="CostPerPrintService"/> class.
-    /// </summary>
-    /// <param name="dbContext">The database context for data access.</param>
-    /// <param name="logger">The logger for diagnostic output.</param>
-    public CostPerPrintService(ExtrudexDbContext dbContext, ILogger<CostPerPrintService> logger)
-    {
-        _dbContext = dbContext;
-        _logger = logger;
-    }
-
-    /// <inheritdoc />
-    public async Task<CostPerPrintResult> CalculateAsync(Guid printJobId, CancellationToken cancellationToken = default)
-    {
-        _logger.LogDebug("Calculating cost per print for job {PrintJobId}", printJobId);
-
-        var job = await _dbContext.PrintJobs
-            .Include(j => j.Spool)
-            .ThenInclude(s => s!.MaterialBase)
-            .FirstOrDefaultAsync(j => j.Id == printJobId, cancellationToken);
-
-        if (job is null)
-        {
-            _logger.LogWarning("Print job {PrintJobId} not found for cost calculation", printJobId);
-            return new CostPerPrintResult
-            {
-                PrintJobId = printJobId,
-                Warnings = new List<string> { $"Print job with ID '{printJobId}' not found." }
-            };
-        }
-
-        return BuildResult(job);
-    }
-
-    /// <inheritdoc />
-    public async Task<IReadOnlyList<CostPerPrintResult>> CalculateBySpoolAsync(
-        Guid spoolId, CancellationToken cancellationToken = default)
-    {
-        _logger.LogDebug("Calculating cost per print for all jobs on spool {SpoolId}", spoolId);
-
-        var jobs = await _dbContext.PrintJobs
-            .Include(j => j.Spool)
-            .ThenInclude(s => s!.MaterialBase)
-            .Where(j => j.SpoolId == spoolId)
-            .OrderByDescending(j => j.CreatedAt)
-            .ToListAsync(cancellationToken);
-
-        if (jobs.Count == 0)
-        {
-            _logger.LogDebug("No print jobs found for spool {SpoolId}", spoolId);
-            return Array.Empty<CostPerPrintResult>();
-        }
-
-        return jobs.Select(BuildResult).ToList();
-    }
-
-    /// <summary>
-    /// Builds a <see cref="CostPerPrintResult"/> from a print job entity.
-    /// Computes cost_per_gram and cost_per_print when all required data is available.
-    /// Populates warnings when data is missing or incomplete.
-    /// </summary>
-    /// <param name="job">The print job entity with Spool navigation loaded.</param>
-    /// <returns>A cost calculation result with breakdown and any warnings.</returns>
-    private CostPerPrintResult BuildResult(Domain.Entities.PrintJob job)
-    {
-        var warnings = new List<string>();
-        var spool = job.Spool;
-
-        // Map what we always have
-        var result = new CostPerPrintResult
-        {
-            PrintJobId = job.Id,
-            PrintName = job.PrintName,
-            SpoolId = job.SpoolId,
-            SpoolSerial = spool?.SpoolSerial ?? string.Empty,
-            MmExtruded = job.MmExtruded,
-            GramsDerived = job.GramsDerived,
-        };
-
-        // Guard: spool must be loaded
-        if (spool is null)
-        {
-            warnings.Add("Spool data is not available for this print job.");
-            result.Warnings = warnings;
-            return result;
-        }
-
-        // Capture purchase price
-        result.PurchasePrice = spool.PurchasePrice;
-        result.WeightTotalGrams = spool.WeightTotalGrams;
-
-        // Check for missing purchase price
-        if (!spool.PurchasePrice.HasValue)
-        {
-            warnings.Add(
-                "Spool purchase price is not recorded. Cost calculation requires a purchase price on the spool.");
-        }
-
-        // Check for zero or negative weight — prevents division by zero
-        if (spool.WeightTotalGrams <= 0)
-        {
-            warnings.Add(
-                "Spool total weight is zero or not recorded. Cost calculation requires a positive weight_total_grams on the spool.");
-        }
-
-        // Check for zero grams derived
-        if (job.GramsDerived <= 0)
-        {
-            warnings.Add(
-                "Derived grams consumed is zero. Ensure mm_extruded, filament diameter, and material density are recorded for this print job.");
-        }
-
-        // If all data is present and valid, compute the cost
-        if (spool.PurchasePrice.HasValue && spool.WeightTotalGrams > 0 && job.GramsDerived > 0)
-        {
-            var costPerGram = spool.PurchasePrice.Value / spool.WeightTotalGrams;
-            result.CostPerGram = Math.Round(costPerGram, 6);
-            result.CostPerPrint = Math.Round(job.GramsDerived * costPerGram, 4);
-
-            _logger.LogDebug(
-                "Cost calculated for job {PrintJobId}: {GramsDerived}g × {CostPerGram:C}/g = {CostPerPrint:C}",
-                job.Id, job.GramsDerived, result.CostPerGram, result.CostPerPrint);
-        }
-        else
-        {
-            _logger.LogDebug(
-                "Cost calculation incomplete for job {PrintJobId}: missing data (warnings: {WarningCount})",
-                job.Id, warnings.Count);
-        }
-
-        result.Warnings = warnings;
-        return result;
-    }
-}

backend/Infrastructure/Services/FilamentUsageSyncService.cs

@@ -1,139 +0,0 @@
-using Extrudex.Domain.Enums;
-using Extrudex.Domain.Interfaces;
-using Extrudex.Infrastructure.Data;
-using Microsoft.EntityFrameworkCore;
-using Microsoft.Extensions.Logging;
-
-namespace Extrudex.Infrastructure.Configuration;
-
-/// <summary>
-/// Service that syncs filament usage data from Moonraker printers into the
-/// Extrudex database. Queries all active Moonraker printers, fetches their
-/// current filament usage metrics, and updates spool remaining weights and
-/// print job records.
-/// </summary>
-public class FilamentUsageSyncService : IFilamentUsageSyncService
-{
-    private readonly ExtrudexDbContext _dbContext;
-    private readonly IMoonrakerClient _moonrakerClient;
-    private readonly ILogger<FilamentUsageSyncService> _logger;
-
-    /// <summary>
-    /// Creates a new FilamentUsageSyncService.
-    /// </summary>
-    /// <param name="dbContext">The EF Core database context for persisting updates.</param>
-    /// <param name="moonrakerClient">The Moonraker HTTP client for fetching printer data.</param>
-    /// <param name="logger">Logger for diagnostic output.</param>
-    public FilamentUsageSyncService(
-        ExtrudexDbContext dbContext,
-        IMoonrakerClient moonrakerClient,
-        ILogger<FilamentUsageSyncService> logger)
-    {
-        _dbContext = dbContext;
-        _moonrakerClient = moonrakerClient;
-        _logger = logger;
-    }
-
-    /// <inheritdoc />
-    public async Task<int> SyncAllAsync(CancellationToken cancellationToken = default)
-    {
-        _logger.LogInformation("Starting filament usage sync cycle");
-
-        var printers = await _dbContext.Printers
-            .Where(p => p.IsActive && p.ConnectionType == ConnectionType.Moonraker)
-            .Include(p => p.AmsUnits)
-                .ThenInclude(u => u.Slots)
-                    .ThenInclude(s => s.Spool)
-            .ToListAsync(cancellationToken);
-
-        if (printers.Count == 0)
-        {
-            _logger.LogInformation("No active Moonraker printers found — skipping sync");
-            return 0;
-        }
-
-        _logger.LogInformation("Found {PrinterCount} active Moonraker printer(s) to sync", printers.Count);
-
-        var syncedCount = 0;
-
-        foreach (var printer in printers)
-        {
-            try
-            {
-                var usageData = await _moonrakerClient.GetFilamentUsageAsync(
-                    printer.HostnameOrIp,
-                    printer.Port,
-                    printer.ApiKey,
-                    cancellationToken);
-
-                if (usageData.Count == 0)
-                {
-                    _logger.LogWarning(
-                        "No usage data returned from printer {PrinterName} ({Host}:{Port})",
-                        printer.Name, printer.HostnameOrIp, printer.Port);
-                    continue;
-                }
-
-                // Update spool remaining weights from AMS data
-                UpdateSpoolWeights(printer, usageData);
-
-                // Mark printer as seen and idle (reachable = idle, not printing)
-                printer.LastSeenAt = DateTime.UtcNow;
-                printer.Status = PrinterStatus.Idle;
-
-                syncedCount++;
-                _logger.LogInformation(
-                    "Successfully synced filament usage from printer {PrinterName}",
-                    printer.Name);
-            }
-            catch (Exception ex)
-            {
-                _logger.LogError(ex,
-                    "Error syncing filament usage from printer {PrinterName} ({Host}:{Port})",
-                    printer.Name, printer.HostnameOrIp, printer.Port);
-            }
-        }
-
-        await _dbContext.SaveChangesAsync(cancellationToken);
-
-        _logger.LogInformation(
-            "Filament usage sync cycle complete — {SyncedCount}/{TotalCount} printers synced",
-            syncedCount, printers.Count);
-
-        return syncedCount;
-    }
-
-    /// <summary>
-    /// Updates spool remaining weights based on usage data received from Moonraker.
-    /// For printers with AMS units, updates the remaining weight on each slot's spool.
-    /// </summary>
-    private void UpdateSpoolWeights(
-        Domain.Entities.Printer printer,
-        Dictionary<string, decimal> usageData)
-    {
-        // Update AMS slot remaining weights if available
-        foreach (var amsUnit in printer.AmsUnits)
-        {
-            foreach (var slot in amsUnit.Slots)
-            {
-                if (slot.Spool != null && slot.RemainingWeightG.HasValue)
-                {
-                    // Sync the AMS-reported remaining weight to the spool
-                    slot.Spool.WeightRemainingGrams = slot.RemainingWeightG.Value;
-
-                    _logger.LogDebug(
-                        "Updated spool {SpoolSerial} remaining weight to {Weight}g",
-                        slot.Spool.SpoolSerial, slot.RemainingWeightG.Value);
-                }
-            }
-        }
-
-        // If usage data contains extruded mm, log it for observability
-        if (usageData.TryGetValue("mm_extruded", out var mmExtruded) && mmExtruded > 0)
-        {
-            _logger.LogInformation(
-                "Printer {PrinterName} reports {MmExtruded}mm filament extruded in latest job",
-                printer.Name, mmExtruded);
-        }
-    }
-}

backend/Infrastructure/Services/MoonrakerClient.cs

@@ -1,130 +0,0 @@
-using System.Net.Http.Json;
-using System.Text.Json;
-using Extrudex.Domain.Interfaces;
-using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
-
-namespace Extrudex.Infrastructure.Configuration;
-
-/// <summary>
-/// HTTP client for communicating with Moonraker REST API endpoints
-/// on Klipper-based printers (e.g., Elegoo Centauri Carbon).
-/// Retrieves filament usage data and printer status information.
-/// </summary>
-public class MoonrakerClient : IMoonrakerClient
-{
-    private readonly HttpClient _httpClient;
-    private readonly ILogger<MoonrakerClient> _logger;
-
-    /// <summary>
-    /// Creates a new MoonrakerClient with the configured HTTP client and logger.
-    /// </summary>
-    /// <param name="httpClient">The HTTP client for making requests to Moonraker endpoints.</param>
-    /// <param name="logger">Logger for diagnostic output.</param>
-    public MoonrakerClient(HttpClient httpClient, ILogger<MoonrakerClient> logger)
-    {
-        _httpClient = httpClient;
-        _logger = logger;
-    }
-
-    /// <inheritdoc />
-    public async Task<Dictionary<string, decimal>> GetFilamentUsageAsync(
-        string hostnameOrIp,
-        int port,
-        string? apiKey,
-        CancellationToken cancellationToken = default)
-    {
-        var baseUrl = BuildBaseUrl(hostnameOrIp, port);
-        var result = new Dictionary<string, decimal>();
-
-        try
-        {
-            // Query Moonraker server info endpoint for filament usage data
-            using var request = new HttpRequestMessage(HttpMethod.Get, $"{baseUrl}/server/history/items?limit=1");
-            if (!string.IsNullOrEmpty(apiKey))
-            {
-                request.Headers.Add("X-Api-Key", apiKey);
-            }
-
-            using var response = await _httpClient.SendAsync(request, cancellationToken);
-            response.EnsureSuccessStatusCode();
-
-            var json = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: cancellationToken);
-
-            // Extract filament usage from the response
-            // Moonraker returns job history with filament_used and similar fields
-            if (json.TryGetProperty("result", out var resultElement))
-            {
-                if (resultElement.TryGetProperty("items", out var items) && items.GetArrayLength() > 0)
-                {
-                    var job = items[0];
-
-                    // Moonraker tracks filament_used in millimeters
-                    if (job.TryGetProperty("filament_used", out var filamentUsed))
-                    {
-                        result["mm_extruded"] = filamentUsed.GetDecimal();
-                    }
-
-                    // Total duration in seconds
-                    if (job.TryGetProperty("print_duration", out var duration))
-                    {
-                        result["print_duration_seconds"] = duration.GetDecimal();
-                    }
-                }
-            }
-
-            _logger.LogDebug(
-                "Retrieved filament usage from Moonraker at {Host}:{Port}: {MetricCount} metrics",
-                hostnameOrIp, port, result.Count);
-        }
-        catch (HttpRequestException ex)
-        {
-            _logger.LogWarning(ex,
-                "Failed to retrieve filament usage from Moonraker at {Host}:{Port}",
-                hostnameOrIp, port);
-        }
-        catch (JsonException ex)
-        {
-            _logger.LogWarning(ex,
-                "Failed to parse Moonraker response from {Host}:{Port}",
-                hostnameOrIp, port);
-        }
-
-        return result;
-    }
-
-    /// <inheritdoc />
-    public async Task<bool> IsReachableAsync(
-        string hostnameOrIp,
-        int port,
-        string? apiKey,
-        CancellationToken cancellationToken = default)
-    {
-        var baseUrl = BuildBaseUrl(hostnameOrIp, port);
-
-        try
-        {
-            using var request = new HttpRequestMessage(HttpMethod.Get, $"{baseUrl}/server/info");
-            if (!string.IsNullOrEmpty(apiKey))
-            {
-                request.Headers.Add("X-Api-Key", apiKey);
-            }
-
-            using var response = await _httpClient.SendAsync(request, cancellationToken);
-            return response.IsSuccessStatusCode;
-        }
-        catch (HttpRequestException)
-        {
-            _logger.LogDebug("Moonraker at {Host}:{Port} is not reachable", hostnameOrIp, port);
-            return false;
-        }
-    }
-
-    /// <summary>
-    /// Builds the base URL for Moonraker API calls from hostname and port.
-    /// </summary>
-    private static string BuildBaseUrl(string hostnameOrIp, int port)
-    {
-        return $"http://{hostnameOrIp}:{port}";
-    }
-}

backend/Program.cs

@@ -1,9 +1,7 @@
 using System.Reflection;
 using Extrudex.API.Filters;
 using Extrudex.API.Hubs;
-using Extrudex.API.Jobs;
 using Extrudex.Domain.Interfaces;
-using Extrudex.Infrastructure.Configuration;
 using Extrudex.Infrastructure.Data;
 using Extrudex.Infrastructure.Services;
 using FluentValidation;
@@ -52,9 +50,6 @@ builder.Services.AddSwaggerGen(c =>
 // ── QR Code Generation ──────────────────────────────────────
 builder.Services.AddSingleton<IQrCodeService, QrCodeService>();
 
-// ── Cost Per Print Calculation ─────────────────────────────
-builder.Services.AddScoped<ICostPerPrintService, CostPerPrintService>();
-
 // ── FluentValidation ──────────────────────────────────────
 // Registers all validators from the API assembly into DI.
 builder.Services.AddValidatorsFromAssembly(Assembly.GetExecutingAssembly());
@@ -82,16 +77,6 @@ builder.Services.AddCors(options =>
 // ── SignalR (real-time printer updates) ────────────────────
 builder.Services.AddSignalR();
 
-// ── Filament Usage Sync (Background Job) ──────────────────
-builder.Services.Configure<FilamentUsageSyncOptions>(
-    builder.Configuration.GetSection(FilamentUsageSyncOptions.SectionName));
-builder.Services.AddHttpClient<IMoonrakerClient, MoonrakerClient>(client =>
-{
-    client.DefaultRequestHeaders.Add("User-Agent", "Extrudex/1.0");
-});
-builder.Services.AddScoped<IFilamentUsageSyncService, FilamentUsageSyncService>();
-builder.Services.AddHostedService<FilamentUsageSyncJob>();
-
 // ── Health Checks ───────────────────────────────────────────
 builder.Services.AddHealthChecks()
     .AddNpgSql(connectionString);

backend/appsettings.Development.json

@@ -8,10 +8,5 @@
   },
   "ConnectionStrings": {
     "ExtrudexDb": "Host=localhost;Port=5432;Database=extrudex_dev;Username=extrudex;Password=changeme"
-  },
-  "FilamentUsageSync": {
-    "PollingInterval": "00:01:00",
-    "RequestTimeout": "00:00:30",
-    "Enabled": true
   }
 }

backend/appsettings.json

@@ -9,10 +9,5 @@
   "AllowedHosts": "*",
   "ConnectionStrings": {
     "ExtrudexDb": "Host=localhost;Port=5432;Database=extrudex;Username=extrudex;Password=changeme"
-  },
-  "FilamentUsageSync": {
-    "PollingInterval": "00:05:00",
-    "RequestTimeout": "00:00:30",
-    "Enabled": true
   }
 }

deploy.sh

@@ -18,14 +18,13 @@ echo "📦 Building and starting services..."
 $COMPOSE_CMD -f docker-compose.dev.yml up -d --build
 
 echo "⏳ Waiting for services to become healthy..."
-sleep 15
+sleep 10
 
 echo "✅ Deployment complete!"
 echo ""
 echo "Services running:"
-echo "  • PostgreSQL:    localhost:5433"
 echo "  • Extrudex API: http://localhost:5080"
-echo "  • Extrudex Web: http://localhost:5081"
+echo "  • Control Center Web: http://localhost:5081"
 echo ""
 echo "To view logs:"
 echo "  $COMPOSE_CMD -f docker-compose.dev.yml logs -f"

docker-compose.dev.yml

@@ -1,25 +1,6 @@
-services:
-  extrudex-db:
-    image: postgres:16-alpine
-    container_name: extrudex-db
-    environment:
-      POSTGRES_USER: extrudex
-      POSTGRES_PASSWORD: changeme
-      POSTGRES_DB: extrudex
-    ports:
-      - "5433:5432"
-    volumes:
-      - extrudex-db-data:/var/lib/postgresql/data
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U extrudex"]
-      interval: 10s
-      timeout: 5s
-      retries: 5
-      start_period: 10s
-    restart: unless-stopped
-    networks:
-      - extrudex-network
+version: '3.8'
 
+services:
   extrudex-api:
     build:
       context: ./backend
@@ -30,14 +11,6 @@ services:
     environment:
       - ASPNETCORE_ENVIRONMENT=Development
       - ASPNETCORE_URLS=http://+:8080
-      - EXTRUDEX_DB_HOST=extrudex-db
-      - EXTRUDEX_DB_PORT=5432
-      - EXTRUDEX_DB_NAME=extrudex
-      - EXTRUDEX_DB_USER=extrudex
-      - EXTRUDEX_DB_PASSWORD=changeme
-    depends_on:
-      extrudex-db:
-        condition: service_healthy
     restart: unless-stopped
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
@@ -48,11 +21,11 @@ services:
     networks:
       - extrudex-network
 
-  extrudex-web:
+  control-center-web:
     build:
-      context: ./frontend
+      context: ../Control-Center/frontend
       dockerfile: Dockerfile
-    container_name: extrudex-web
+    container_name: control-center-web
     ports:
       - "5081:80"
     depends_on:
@@ -62,9 +35,6 @@ services:
     networks:
       - extrudex-network
 
-volumes:
-  extrudex-db-data:
-
 networks:
   extrudex-network:
     driver: bridge

frontend/src/app/app.config.ts

@@ -1,11 +1,15 @@
 import { ApplicationConfig, provideBrowserGlobalErrorListeners } from '@angular/core';
 import { provideRouter } from '@angular/router';
+import { provideHttpClient } from '@angular/common/http';
+import { provideAnimationsAsync } from '@angular/platform-browser/animations/async';
 
 import { routes } from './app.routes';
 
 export const appConfig: ApplicationConfig = {
   providers: [
     provideBrowserGlobalErrorListeners(),
-    provideRouter(routes)
+    provideRouter(routes),
+    provideHttpClient(),
+    provideAnimationsAsync(),
   ]
-};
+};

frontend/src/app/components/filament-dialog/filament-dialog.component.html

@@ -0,0 +1,225 @@
+<!-- Filament Add/Edit Dialog — Angular Material Dialog -->
+<mat-dialog-content class="filament-dialog-content">
+
+  <!-- Dialog Title -->
+  <h2 mat-dialog-title>{{ dialogTitle() }}</h2>
+
+  <!-- Loading state for lookup data -->
+  @if (lookupsLoading()) {
+    <div class="dialog-loading" role="status" aria-label="Loading material options">
+      <mat-spinner diameter="32"></mat-spinner>
+      <p>Loading material options…</p>
+    </div>
+  }
+
+  <!-- Form -->
+  @if (!lookupsLoading()) {
+    <form [formGroup]="form" class="filament-form" (ngSubmit)="save()">
+
+      <!-- Server Error Banner -->
+      @if (serverError()) {
+        <div class="error-banner" role="alert">
+          <mat-icon aria-hidden="true">error</mat-icon>
+          <span>{{ serverError() }}</span>
+        </div>
+      }
+
+      <!-- ── Material Section ──────────────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Material</h3>
+
+        <!-- Base Material -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Base Material</mat-label>
+          <mat-select formControlName="materialBaseId" required aria-label="Base material">
+            @for (base of materialBases(); track base.id) {
+              <mat-option [value]="base.id">{{ base.name }}</mat-option>
+            }
+          </mat-select>
+          @if (form.get('materialBaseId')!.hasError('required') && form.get('materialBaseId')!.touched) {
+            <mat-error>Base material is required</mat-error>
+          }
+        </mat-form-field>
+
+        <!-- Finish -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Finish</mat-label>
+          <mat-select formControlName="materialFinishId" required aria-label="Material finish">
+            <mat-option [value]="''" disabled>Select a base material first</mat-option>
+            @for (finish of filteredFinishes(); track finish.id) {
+              <mat-option [value]="finish.id">{{ finish.name }}</mat-option>
+            }
+          </mat-select>
+          @if (form.get('materialFinishId')!.hasError('required') && form.get('materialFinishId')!.touched) {
+            <mat-error>Finish is required</mat-error>
+          }
+          @if (filteredFinishes().length === 0 && form.get('materialBaseId')!.value) {
+            <mat-hint>No finishes available for this material</mat-hint>
+          }
+        </mat-form-field>
+
+        <!-- Modifier (optional) -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Modifier (optional)</mat-label>
+          <mat-select formControlName="materialModifierId" aria-label="Material modifier">
+            <mat-option [value]="null">None</mat-option>
+            @for (modifier of filteredModifiers(); track modifier.id) {
+              <mat-option [value]="modifier.id">{{ modifier.name }}</mat-option>
+            }
+          </mat-select>
+          @if (filteredModifiers().length === 0 && form.get('materialBaseId')!.value) {
+            <mat-hint>No modifiers available for this material</mat-hint>
+          }
+        </mat-form-field>
+      </div>
+
+      <!-- ── Spool Details Section ──────────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Spool Details</h3>
+
+        <!-- Brand -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Brand</mat-label>
+          <input matInput formControlName="brand" required maxlength="200"
+                 placeholder="e.g., Bambu Lab, Polymaker" aria-label="Brand" />
+          @if (form.get('brand')!.hasError('required') && form.get('brand')!.touched) {
+            <mat-error>Brand is required</mat-error>
+          }
+        </mat-form-field>
+
+        <!-- Serial -->
+        <mat-form-field appearance="outline" class="form-field full-width">
+          <mat-label>Serial Number</mat-label>
+          <input matInput formControlName="spoolSerial" required maxlength="200"
+                 placeholder="e.g., SN-001" aria-label="Serial number" />
+          @if (form.get('spoolSerial')!.hasError('required') && form.get('spoolSerial')!.touched) {
+            <mat-error>Serial number is required</mat-error>
+          }
+        </mat-form-field>
+
+        <!-- Color Name + Color Hex (side by side) -->
+        <div class="form-row">
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Color Name</mat-label>
+            <input matInput formControlName="colorName" required maxlength="200"
+                   placeholder="e.g., Fire Engine Red" aria-label="Color name" />
+            @if (form.get('colorName')!.hasError('required') && form.get('colorName')!.touched) {
+              <mat-error>Color name is required</mat-error>
+            }
+          </mat-form-field>
+
+          <mat-form-field appearance="outline" class="form-field color-hex-field">
+            <mat-label>Color Hex</mat-label>
+            <input matInput formControlName="colorHex" required
+                   placeholder="#FF0000" maxlength="7" aria-label="Color hex code" />
+            <span matTextSuffix class="color-preview">
+              <span class="color-swatch-mini" [style.background-color]="form.get('colorHex')!.value"></span>
+            </span>
+            @if (form.get('colorHex')!.hasError('required') && form.get('colorHex')!.touched) {
+              <mat-error>Color hex is required</mat-error>
+            }
+            @if (form.get('colorHex')!.hasError('pattern') && form.get('colorHex')!.touched) {
+              <mat-error>Must be #RRGGBB format</mat-error>
+            }
+          </mat-form-field>
+        </div>
+      </div>
+
+      <!-- ── Weight & Dimensions Section ────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Weight &amp; Dimensions</h3>
+
+        <div class="form-row">
+          <!-- Diameter -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Diameter (mm)</mat-label>
+            <input matInput type="number" formControlName="filamentDiameterMm" required
+                   min="0.1" max="10" step="0.01" aria-label="Filament diameter in mm" />
+            @if (form.get('filamentDiameterMm')!.hasError('required') && form.get('filamentDiameterMm')!.touched) {
+              <mat-error>Diameter is required</mat-error>
+            }
+          </mat-form-field>
+        </div>
+
+        <div class="form-row">
+          <!-- Total Weight -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Total Weight (g)</mat-label>
+            <input matInput type="number" formControlName="weightTotalGrams" required
+                   min="0.01" max="100000" step="1" aria-label="Total spool weight in grams" />
+            <mat-hint>Full spool weight</mat-hint>
+            @if (form.get('weightTotalGrams')!.hasError('required') && form.get('weightTotalGrams')!.touched) {
+              <mat-error>Total weight is required</mat-error>
+            }
+          </mat-form-field>
+
+          <!-- Remaining Weight -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Remaining Weight (g)</mat-label>
+            <input matInput type="number" formControlName="weightRemainingGrams" required
+                   min="0" max="100000" step="1" aria-label="Remaining weight in grams" />
+            <mat-hint>Current remaining</mat-hint>
+            @if (form.get('weightRemainingGrams')!.hasError('required') && form.get('weightRemainingGrams')!.touched) {
+              <mat-error>Remaining weight is required</mat-error>
+            }
+            @if (form.get('weightRemainingGrams')!.hasError('exceedsTotal')) {
+              <mat-error>Cannot exceed total weight</mat-error>
+            }
+          </mat-form-field>
+        </div>
+      </div>
+
+      <!-- ── Purchase & Status Section ──────────────────────── -->
+      <div class="form-section">
+        <h3 class="section-title">Purchase &amp; Status</h3>
+
+        <div class="form-row">
+          <!-- Purchase Price -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Price</mat-label>
+            <input matInput type="number" formControlName="purchasePrice"
+                   min="0" max="1000000" step="0.01"
+                   placeholder="e.g., 25.00" aria-label="Purchase price" />
+            <span matTextSuffix>$</span>
+            @if (form.get('purchasePrice')!.hasError('min') && form.get('purchasePrice')!.touched) {
+              <mat-error>Price must be non-negative</mat-error>
+            }
+          </mat-form-field>
+
+          <!-- Purchase Date -->
+          <mat-form-field appearance="outline" class="form-field">
+            <mat-label>Purchase Date</mat-label>
+            <input matInput [matDatepicker]="picker" formControlName="purchaseDate"
+                   aria-label="Purchase date" />
+            <mat-datepicker-toggle matIconSuffix [for]="picker"></mat-datepicker-toggle>
+            <mat-datepicker #picker></mat-datepicker>
+          </mat-form-field>
+        </div>
+
+        <!-- Active Status -->
+        <div class="checkbox-row">
+          <mat-checkbox formControlName="isActive" aria-label="Active status">
+            Spool is active and available for use
+          </mat-checkbox>
+        </div>
+      </div>
+
+    </form>
+  }
+
+</mat-dialog-content>
+
+<!-- Dialog Actions -->
+<mat-dialog-actions align="end">
+  <button mat-button type="button" (click)="cancel()" [disabled]="saving()"
+          aria-label="Cancel">
+    Cancel
+  </button>
+  <button mat-raised-button color="primary" type="button" (click)="save()"
+          [disabled]="saving() || form.invalid" aria-label="Save filament">
+    @if (saving()) {
+      <mat-spinner diameter="20" class="btn-spinner"></mat-spinner>
+    }
+    {{ isEditMode() ? 'Save Changes' : 'Add Filament' }}
+  </button>
+</mat-dialog-actions>

frontend/src/app/components/filament-dialog/filament-dialog.component.scss

@@ -0,0 +1,175 @@
+/**
+ * Filament Dialog Styles
+ * Touch-optimized for kiosk (Raspberry Pi 5) and mobile PWA
+ */
+
+$touch-target-min: 48px;
+$spacing-unit: 8px;
+$color-error: #ef4444;
+
+// ── Dialog Layout ──────────────────────────────────────────
+
+.filament-dialog-content {
+  overflow-y: auto;
+  max-height: 70vh;
+  padding: 0 $spacing-unit * 2;
+
+  @media (max-width: 480px) {
+    padding: 0 $spacing-unit;
+  }
+}
+
+[mat-dialog-title] {
+  margin: 0 0 $spacing-unit * 2 0;
+  padding: $spacing-unit * 2 0 0 0;
+  font-size: 20px;
+  font-weight: 600;
+}
+
+// ── Loading State ──────────────────────────────────────────
+
+.dialog-loading {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  padding: 48px $spacing-unit * 2;
+  color: var(--mat-sys-on-surface-variant);
+
+  p {
+    margin-top: $spacing-unit * 2;
+    font-size: 14px;
+  }
+}
+
+// ── Error Banner ───────────────────────────────────────────
+
+.error-banner {
+  display: flex;
+  align-items: center;
+  gap: $spacing-unit;
+  padding: $spacing-unit * 1.5 $spacing-unit * 2;
+  border-radius: 8px;
+  margin-bottom: $spacing-unit * 2;
+  background-color: rgba($color-error, 0.12);
+  color: $color-error;
+  border: 1px solid rgba($color-error, 0.3);
+  font-size: 14px;
+  font-weight: 500;
+
+  mat-icon {
+    font-size: 20px !important;
+    width: 20px !important;
+    height: 20px !important;
+  }
+}
+
+// ── Form Sections ──────────────────────────────────────────
+
+.form-section {
+  margin-bottom: $spacing-unit * 3;
+
+  .section-title {
+    font-size: 14px;
+    font-weight: 600;
+    text-transform: uppercase;
+    letter-spacing: 0.04em;
+    color: var(--mat-sys-on-surface-variant);
+    margin: 0 0 $spacing-unit * 1.5 0;
+    padding-bottom: $spacing-unit * 0.5;
+    border-bottom: 1px solid var(--mat-sys-outline-variant);
+  }
+}
+
+.filament-form {
+  display: flex;
+  flex-direction: column;
+  gap: $spacing-unit;
+}
+
+// ── Form Fields ────────────────────────────────────────────
+
+.form-field {
+  width: 100%;
+
+  // Touch target sizing
+  .mat-mdc-form-field-subscript-wrapper {
+    min-height: 20px;
+  }
+}
+
+.form-row {
+  display: flex;
+  gap: $spacing-unit * 2;
+  width: 100%;
+
+  .form-field {
+    flex: 1;
+  }
+
+  @media (max-width: 480px) {
+    flex-direction: column;
+    gap: 0;
+  }
+}
+
+// ── Color Hex Preview ──────────────────────────────────────
+
+.color-hex-field {
+  max-width: 180px;
+
+  @media (max-width: 480px) {
+    max-width: 100%;
+  }
+}
+
+.color-preview {
+  display: inline-flex;
+  align-items: center;
+  margin-left: 4px;
+}
+
+.color-swatch-mini {
+  display: inline-block;
+  width: 20px;
+  height: 20px;
+  border-radius: 4px;
+  border: 1px solid rgba(0, 0, 0, 0.12);
+  vertical-align: middle;
+}
+
+// ── Checkbox Row ───────────────────────────────────────────
+
+.checkbox-row {
+  display: flex;
+  align-items: center;
+  padding: $spacing-unit 0;
+
+  mat-checkbox {
+    min-height: $touch-target-min;
+    display: flex;
+    align-items: center;
+  }
+}
+
+// ── Save Button Spinner ────────────────────────────────────
+
+mat-dialog-actions {
+  padding: $spacing-unit $spacing-unit * 2 $spacing-unit * 2;
+  gap: $spacing-unit;
+
+  button {
+    min-height: $touch-target-min;
+    min-width: 100px;
+  }
+}
+
+.btn-spinner {
+  display: inline-block;
+  margin-right: $spacing-unit;
+  vertical-align: middle;
+
+  circle {
+    stroke: currentColor;
+  }
+}

frontend/src/app/components/filament-dialog/filament-dialog.component.ts

@@ -0,0 +1,277 @@
+import {
+  ChangeDetectionStrategy,
+  Component,
+  inject,
+  signal,
+  computed,
+} from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { FormsModule, ReactiveFormsModule, FormBuilder, FormGroup, Validators } from '@angular/forms';
+import { MatDialogRef, MAT_DIALOG_DATA, MatDialogModule } from '@angular/material/dialog';
+import { MatFormFieldModule } from '@angular/material/form-field';
+import { MatInputModule } from '@angular/material/input';
+import { MatSelectModule } from '@angular/material/select';
+import { MatDatepickerModule } from '@angular/material/datepicker';
+import { MatNativeDateModule } from '@angular/material/core';
+import { MatCheckboxModule } from '@angular/material/checkbox';
+import { MatButtonModule } from '@angular/material/button';
+import { MatIconModule } from '@angular/material/icon';
+import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
+import { MatTooltipModule } from '@angular/material/tooltip';
+
+import { Filament } from '../../models/filament.model';
+import {
+  MaterialBase,
+  MaterialFinish,
+  MaterialModifier,
+} from '../../models/material.model';
+import {
+  FilamentService,
+  CreateFilamentRequest,
+  UpdateFilamentRequest,
+} from '../../services/filament.service';
+
+/** Data passed into the dialog from the opener. */
+export interface FilamentDialogData {
+  /** If provided, the dialog opens in edit mode with pre-populated fields. */
+  filament?: Filament;
+}
+
+@Component({
+  selector: 'app-filament-dialog',
+  standalone: true,
+  imports: [
+    CommonModule,
+    FormsModule,
+    ReactiveFormsModule,
+    MatDialogModule,
+    MatFormFieldModule,
+    MatInputModule,
+    MatSelectModule,
+    MatDatepickerModule,
+    MatNativeDateModule,
+    MatCheckboxModule,
+    MatButtonModule,
+    MatIconModule,
+    MatProgressSpinnerModule,
+    MatTooltipModule,
+  ],
+  templateUrl: './filament-dialog.component.html',
+  styleUrl: './filament-dialog.component.scss',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class FilamentDialogComponent {
+  private readonly dialogRef = inject(MatDialogRef<FilamentDialogComponent>);
+  private readonly data = inject<FilamentDialogData>(MAT_DIALOG_DATA);
+  private readonly fb = inject(FormBuilder);
+  private readonly filamentService = inject(FilamentService);
+
+  /** Whether this dialog is in edit mode (has existing filament data). */
+  readonly isEditMode = computed(() => !!this.data.filament);
+
+  /** Dialog title based on mode. */
+  readonly dialogTitle = computed(() =>
+    this.isEditMode() ? 'Edit Filament' : 'Add Filament'
+  );
+
+  // ── Lookup data signals ──────────────────────────────────
+
+  /** All material bases for the base material dropdown. */
+  readonly materialBases = signal<MaterialBase[]>([]);
+
+  /** Material finishes filtered by selected base material. */
+  readonly filteredFinishes = signal<MaterialFinish[]>([]);
+
+  /** Material modifiers filtered by selected base material. */
+  readonly filteredModifiers = signal<MaterialModifier[]>([]);
+
+  /** Whether material lookups are loading. */
+  readonly lookupsLoading = signal(true);
+
+  /** Whether the save operation is in progress. */
+  readonly saving = signal(false);
+
+  /** Server error message, if any. */
+  readonly serverError = signal<string | null>(null);
+
+  // ── Form ─────────────────────────────────────────────────
+
+  readonly form: FormGroup = this.fb.group({
+    materialBaseId: ['', Validators.required],
+    materialFinishId: ['', Validators.required],
+    materialModifierId: [null],
+    brand: ['', [Validators.required, Validators.maxLength(200)]],
+    colorName: ['', [Validators.required, Validators.maxLength(200)]],
+    colorHex: ['#000000', [Validators.required, Validators.pattern(/^#[0-9A-Fa-f]{6}$/)]],
+    weightTotalGrams: [1000, [Validators.required, Validators.min(0.01), Validators.max(100000)]],
+    weightRemainingGrams: [1000, [Validators.required, Validators.min(0), Validators.max(100000)]],
+    filamentDiameterMm: [1.75, [Validators.required, Validators.min(0.1), Validators.max(10)]],
+    spoolSerial: ['', [Validators.required, Validators.maxLength(200)]],
+    purchasePrice: [null, [Validators.min(0), Validators.max(1000000)]],
+    purchaseDate: [null],
+    isActive: [true],
+  });
+
+  constructor() {
+    this.loadLookups();
+    this.patchFormIfEditing();
+    this.setupCascadingFilters();
+  }
+
+  // ── Data loading ─────────────────────────────────────────
+
+  /** Load material bases, finishes, and modifiers for dropdowns. */
+  private loadLookups(): void {
+    this.lookupsLoading.set(true);
+    this.filamentService.getMaterialBases().subscribe({
+      next: (bases) => {
+        this.materialBases.set(bases);
+        this.lookupsLoading.set(false);
+      },
+      error: () => {
+        this.lookupsLoading.set(false);
+        this.serverError.set('Failed to load material options. Please try again.');
+      },
+    });
+  }
+
+  /** Pre-populate form fields when editing an existing filament. */
+  private patchFormIfEditing(): void {
+    if (this.data.filament) {
+      const f = this.data.filament;
+      this.form.patchValue({
+        materialBaseId: f.materialBaseId,
+        materialFinishId: f.materialFinishId,
+        materialModifierId: f.materialModifierId,
+        brand: f.brand,
+        colorName: f.colorName,
+        colorHex: f.colorHex,
+        weightTotalGrams: f.weightTotalGrams,
+        weightRemainingGrams: f.weightRemainingGrams,
+        filamentDiameterMm: f.filamentDiameterMm,
+        spoolSerial: f.spoolSerial,
+        purchasePrice: f.purchasePrice,
+        purchaseDate: f.purchaseDate ? new Date(f.purchaseDate) : null,
+        isActive: f.isActive,
+      });
+    }
+  }
+
+  /** Set up cascading filter: when base material changes, reload finishes & modifiers. */
+  private setupCascadingFilters(): void {
+    this.form.get('materialBaseId')!.valueChanges.subscribe((baseId: string | null) => {
+      // Clear dependent selections when base changes
+      this.form.get('materialFinishId')!.setValue('');
+      this.form.get('materialModifierId')!.setValue(null);
+      this.filteredFinishes.set([]);
+      this.filteredModifiers.set([]);
+
+      if (!baseId) return;
+
+      this.filamentService.getMaterialFinishes(baseId).subscribe({
+        next: (finishes) => this.filteredFinishes.set(finishes),
+        error: () => this.filteredFinishes.set([]),
+      });
+
+      this.filamentService.getMaterialModifiers(baseId).subscribe({
+        next: (modifiers) => this.filteredModifiers.set(modifiers),
+        error: () => this.filteredModifiers.set([]),
+      });
+    });
+
+    // If editing, trigger the cascading load for the pre-selected base
+    if (this.data.filament) {
+      const baseId = this.data.filament.materialBaseId;
+      // We need to load finishes and modifiers for the pre-selected base
+      // but also re-select the original finish and modifier after loading
+      this.filamentService.getMaterialFinishes(baseId).subscribe({
+        next: (finishes) => {
+          this.filteredFinishes.set(finishes);
+          // Re-patch finish after load
+          this.form.get('materialFinishId')!.setValue(this.data.filament!.materialFinishId);
+        },
+      });
+      this.filamentService.getMaterialModifiers(baseId).subscribe({
+        next: (modifiers) => {
+          this.filteredModifiers.set(modifiers);
+          // Re-patch modifier after load
+          this.form.get('materialModifierId')!.setValue(this.data.filament!.materialModifierId);
+        },
+      });
+    }
+  }
+
+  // ── Actions ──────────────────────────────────────────────
+
+  /** Cancel and close the dialog without saving. */
+  cancel(): void {
+    this.dialogRef.close(false);
+  }
+
+  /** Submit the form — creates or updates the filament. */
+  save(): void {
+    if (this.form.invalid) {
+      this.form.markAllAsTouched();
+      return;
+    }
+
+    // Cross-field validation: remaining weight must not exceed total weight
+    const total = this.form.value.weightTotalGrams;
+    const remaining = this.form.value.weightRemainingGrams;
+    if (remaining > total) {
+      this.form.get('weightRemainingGrams')!.setErrors({ exceedsTotal: true });
+      return;
+    }
+
+    this.saving.set(true);
+    this.serverError.set(null);
+
+    const formValue = this.form.value;
+    const request: CreateFilamentRequest | UpdateFilamentRequest = {
+      materialBaseId: formValue.materialBaseId,
+      materialFinishId: formValue.materialFinishId,
+      materialModifierId: formValue.materialModifierId || null,
+      brand: formValue.brand.trim(),
+      colorName: formValue.colorName.trim(),
+      colorHex: formValue.colorHex,
+      weightTotalGrams: formValue.weightTotalGrams,
+      weightRemainingGrams: formValue.weightRemainingGrams,
+      filamentDiameterMm: formValue.filamentDiameterMm,
+      spoolSerial: formValue.spoolSerial.trim(),
+      purchasePrice: formValue.purchasePrice ?? null,
+      purchaseDate: formValue.purchaseDate
+        ? new Date(formValue.purchaseDate).toISOString()
+        : null,
+      isActive: formValue.isActive,
+    };
+
+    if (this.isEditMode()) {
+      const id = this.data.filament!.id;
+      this.filamentService.updateFilament(id, request).subscribe({
+        next: (updated) => {
+          this.saving.set(false);
+          this.dialogRef.close(true);
+        },
+        error: (err) => {
+          this.saving.set(false);
+          this.serverError.set(
+            err?.error?.error || err?.message || 'Failed to update filament. Please try again.'
+          );
+        },
+      });
+    } else {
+      this.filamentService.createFilament(request).subscribe({
+        next: (created) => {
+          this.saving.set(false);
+          this.dialogRef.close(true);
+        },
+        error: (err) => {
+          this.saving.set(false);
+          this.serverError.set(
+            err?.error?.error || err?.message || 'Failed to create filament. Please try again.'
+          );
+        },
+      });
+    }
+  }
+}

frontend/src/app/components/filament-filter/filament-filter.component.html

@@ -1,76 +0,0 @@
-<!-- Filament Filter Bar — material type, color search, low stock, active-only -->
-<div class="filament-filter-bar" role="search" aria-label="Filter filament inventory">
-
-  <!-- Material Type Multi-Select -->
-  <mat-form-field appearance="outline" class="filter-field material-filter">
-    <mat-label>Material</mat-label>
-    <mat-select multiple
-                [value]="selectedMaterials()"
-                (selectionChange)="onMaterialChange($event.value)"
-                aria-label="Filter by material type">
-      @for (material of materialOptions(); track material) {
-        <mat-option [value]="material">{{ material }}</mat-option>
-      }
-    </mat-select>
-    @if (selectedMaterials().length > 0) {
-      <mat-chip-set class="selected-chips" matSuffix>
-        @for (mat of selectedMaterials(); track mat) {
-          <mat-chip (removed)="removeMaterial(mat)"
-                    class="filter-chip">
-            <span>{{ mat }}</span>
-            <mat-icon matChipRemove>cancel</mat-icon>
-          </mat-chip>
-        }
-      </mat-chip-set>
-    }
-  </mat-form-field>
-
-  <!-- Color Search -->
-  <mat-form-field appearance="outline" class="filter-field color-filter">
-    <mat-label>Color</mat-label>
-    <input matInput
-           type="text"
-           [value]="colorSearch()"
-           (input)="onColorSearchChange($any($event.target).value)"
-           placeholder="Search color..."
-           aria-label="Filter by color name" />
-    @if (colorSearch().trim()) {
-      <mat-icon matSuffix class="filter-active-icon">filter_list</mat-icon>
-    }
-  </mat-form-field>
-
-  <!-- Low Stock Toggle -->
-  <mat-checkbox [checked]="lowStockOnly()"
-                (change)="onLowStockToggle($event.checked)"
-                class="filter-checkbox"
-                aria-label="Show low stock only"
-                matTooltip="Show only spools at 25% or less remaining"
-                matTooltipPosition="below">
-    <mat-icon class="checkbox-icon" [class.active]="lowStockOnly()">warning</mat-icon>
-    Low Stock
-  </mat-checkbox>
-
-  <!-- Active Only Toggle -->
-  <mat-checkbox [checked]="activeOnly()"
-                (change)="onActiveOnlyToggle($event.checked)"
-                class="filter-checkbox"
-                aria-label="Show active spools only"
-                matTooltip="Show only spools currently in use"
-                matTooltipPosition="below">
-    <mat-icon class="checkbox-icon" [class.active]="activeOnly()">check_circle</mat-icon>
-    Active Only
-  </mat-checkbox>
-
-  <!-- Clear All Filters -->
-  @if (hasActiveFilters()) {
-    <button mat-button
-            class="clear-filters-btn"
-            (click)="clearAll()"
-            aria-label="Clear all filters"
-            matTooltip="Remove all filters"
-            matTooltipPosition="below">
-      <mat-icon>filter_alt_off</mat-icon>
-      Clear
-    </button>
-  }
-</div>

frontend/src/app/components/filament-filter/filament-filter.component.scss

@@ -1,134 +0,0 @@
-/**
- * Filament Filter Bar Styles
- * Responsive filter layout for kiosk and mobile
- */
-
-$spacing-unit: 8px;
-
-.filament-filter-bar {
-  display: flex;
-  align-items: center;
-  gap: $spacing-unit * 2;
-  flex-wrap: wrap;
-  padding: $spacing-unit * 2 0;
-  margin-bottom: $spacing-unit * 2;
-}
-
-// Form field sizing
-.filter-field {
-  flex: 0 1 auto;
-  min-width: 160px;
-
-  &.material-filter {
-    min-width: 200px;
-  }
-
-  &.color-filter {
-    min-width: 180px;
-  }
-
-  // Reduce vertical spacing inside filter fields
-  .mat-mdc-form-field-subscript-wrapper {
-    display: none; // No hint/error text needed for filters
-  }
-}
-
-// Selected material chips
-.selected-chips {
-  flex-wrap: wrap;
-  gap: 4px;
-}
-
-.filter-chip {
-  font-size: 12px !important;
-  min-height: 24px !important;
-
-  mat-icon {
-    font-size: 14px !important;
-    width: 14px !important;
-    height: 14px !important;
-  }
-}
-
-// Active filter icon
-.filter-active-icon {
-  color: var(--mat-sys-primary);
-  font-size: 18px !important;
-  width: 18px !important;
-  height: 18px !important;
-}
-
-// Checkbox styling
-.filter-checkbox {
-  display: flex;
-  align-items: center;
-  gap: 4px;
-  white-space: nowrap;
-  user-select: none;
-  touch-action: manipulation; // Prevent zoom on double-tap
-
-  .checkbox-icon {
-    font-size: 18px !important;
-    width: 18px !important;
-    height: 18px !important;
-    color: var(--mat-sys-on-surface-variant);
-    transition: color 0.2s ease;
-
-    &.active {
-      color: var(--mat-sys-primary);
-    }
-  }
-}
-
-// Clear filters button
-.clear-filters-btn {
-  display: flex;
-  align-items: center;
-  gap: 4px;
-  font-size: 13px;
-
-  mat-icon {
-    font-size: 18px !important;
-    width: 18px !important;
-    height: 18px !important;
-  }
-}
-
-// Responsive: stack filters vertically on small screens
-@media (max-width: 768px) {
-  .filament-filter-bar {
-    flex-direction: column;
-    align-items: stretch;
-    gap: $spacing-unit;
-  }
-
-  .filter-field {
-    width: 100%;
-    min-width: unset;
-
-    &.material-filter,
-    &.color-filter {
-      min-width: unset;
-    }
-  }
-
-  .filter-checkbox {
-    padding: $spacing-unit 0;
-  }
-
-  .clear-filters-btn {
-    align-self: flex-start;
-  }
-}
-
-// Extra-small screens (phone portrait)
-@media (max-width: 480px) {
-  .filament-filter-bar {
-    padding: $spacing-unit 0;
-    margin-bottom: $spacing-unit;
-  }
-
-  .filter-checkbox {
-    font-size: 13px;
-  }
-}

frontend/src/app/components/filament-filter/filament-filter.component.ts

@@ -1,158 +0,0 @@
-import {
-  ChangeDetectionStrategy,
-  Component,
-  EventEmitter,
-  Input,
-  Output,
-  computed,
-  signal,
-} from '@angular/core';
-import { CommonModule } from '@angular/common';
-import { FormsModule } from '@angular/forms';
-import { MatFormFieldModule } from '@angular/material/form-field';
-import { MatSelectModule } from '@angular/material/select';
-import { MatInputModule } from '@angular/material/input';
-import { MatCheckboxModule } from '@angular/material/checkbox';
-import { MatIconModule } from '@angular/material/icon';
-import { MatChipsModule } from '@angular/material/chips';
-import { MatButtonModule } from '@angular/material/button';
-import { MatTooltipModule } from '@angular/material/tooltip';
-import {
-  Filament,
-  StockLevel,
-  classifyStockLevel,
-} from '../../models/filament.model';
-
-/** Filter state emitted by the filament filter component */
-export interface FilamentFilterState {
-  /** Selected material base names — empty means all */
-  materialBaseNames: string[];
-
-  /** Color search text — empty string means all */
-  colorSearch: string;
-
-  /** Whether to show only low/critical stock */
-  lowStockOnly: boolean;
-
-  /** Whether to show only active spools */
-  activeOnly: boolean;
-}
-
-/**
- * FilamentFilterComponent — Filter bar for the filament inventory list.
- *
- * Provides:
- * - Material type multi-select filter
- * - Color name text search
- * - Low stock toggle (shows only critical/low spools)
- * - Active-only toggle
- * - Clear all filters action
- */
-@Component({
-  selector: 'app-filament-filter',
-  standalone: true,
-  imports: [
-    CommonModule,
-    FormsModule,
-    MatFormFieldModule,
-    MatSelectModule,
-    MatInputModule,
-    MatCheckboxModule,
-    MatIconModule,
-    MatChipsModule,
-    MatButtonModule,
-    MatTooltipModule,
-  ],
-  templateUrl: './filament-filter.component.html',
-  styleUrl: './filament-filter.component.scss',
-  changeDetection: ChangeDetectionStrategy.OnPush,
-})
-export class FilamentFilterComponent {
-  /** Filament data input — used to derive material options */
-  @Input() set filaments(value: Filament[]) {
-    this._filaments.set(value);
-    const materials = [...new Set(value.map((f) => f.materialBaseName))].sort();
-    this.materialOptions.set(materials);
-  }
-  get filaments(): Filament[] {
-    return this._filaments();
-  }
-  private readonly _filaments = signal<Filament[]>([]);
-
-  /** Available material base names derived from filament data */
-  readonly materialOptions = signal<string[]>([]);
-
-  /** Selected material base names */
-  readonly selectedMaterials = signal<string[]>([]);
-
-  /** Color search text */
-  readonly colorSearch = signal('');
-
-  /** Low stock only toggle */
-  readonly lowStockOnly = signal(false);
-
-  /** Active only toggle */
-  readonly activeOnly = signal(false);
-
-  /** Computed: whether any filters are active */
-  readonly hasActiveFilters = computed(
-    () =>
-      this.selectedMaterials().length > 0 ||
-      this.colorSearch().trim().length > 0 ||
-      this.lowStockOnly() ||
-      this.activeOnly()
-  );
-
-  /** Emits the current filter state whenever filters change */
-  @Output() readonly filterChange = new EventEmitter<FilamentFilterState>();
-
-  /** Handle material selection change */
-  onMaterialChange(selected: string[]): void {
-    this.selectedMaterials.set(selected);
-    this.emitFilterState();
-  }
-
-  /** Handle color search input */
-  onColorSearchChange(value: string): void {
-    this.colorSearch.set(value);
-    this.emitFilterState();
-  }
-
-  /** Handle low stock toggle */
-  onLowStockToggle(checked: boolean): void {
-    this.lowStockOnly.set(checked);
-    this.emitFilterState();
-  }
-
-  /** Handle active-only toggle */
-  onActiveOnlyToggle(checked: boolean): void {
-    this.activeOnly.set(checked);
-    this.emitFilterState();
-  }
-
-  /** Remove a single material chip */
-  removeMaterial(material: string): void {
-    const updated = this.selectedMaterials().filter((m) => m !== material);
-    this.selectedMaterials.set(updated);
-    this.emitFilterState();
-  }
-
-  /** Clear all filters */
-  clearAll(): void {
-    this.selectedMaterials.set([]);
-    this.colorSearch.set('');
-    this.lowStockOnly.set(false);
-    this.activeOnly.set(false);
-    this.emitFilterState();
-  }
-
-  /** Emit the current filter state */
-  private emitFilterState(): void {
-    this.filterChange.emit({
-      materialBaseNames: this.selectedMaterials(),
-      colorSearch: this.colorSearch().trim().toLowerCase(),
-      lowStockOnly: this.lowStockOnly(),
-      activeOnly: this.activeOnly(),
-    });
-  }
-}

frontend/src/app/components/filament-table/filament-table.component.html

@@ -1,11 +1,15 @@
-<!-- Filament Inventory Table — with filters and low stock indicators -->
+<!-- Filament Inventory Table — with low stock indicators -->
 <div class="filament-table-container" role="region" aria-label="Filament inventory">
 
-  <!-- Filter Bar -->
-  <app-filament-filter
-    [filaments]="allFilaments()"
-    (filterChange)="onFilterChange($event)"
-    aria-label="Filter filament inventory" />
+  <!-- Header Row: title + Add button -->
+  <div class="table-header">
+    <h2 class="table-title">Filament Inventory</h2>
+    <button mat-raised-button color="primary" (click)="openAddDialog()"
+            aria-label="Add filament" class="add-btn">
+      <mat-icon aria-hidden="true">add</mat-icon>
+      Add Filament
+    </button>
+  </div>
 
   <!-- Low Stock Alert Banner — shown when critical or low stock spools exist -->
   @if (criticalCount() > 0) {
@@ -22,7 +26,7 @@
 
   <!-- Filament Table -->
   <table mat-table
-         [dataSource]="filteredFilaments()"
+         [dataSource]="sortedFilaments()"
          matSort
          (matSortChange)="sortData($event)"
          class="filament-table"
@@ -112,6 +116,20 @@
       </td>
     </ng-container>
 
+    <!-- Actions Column -->
+    <ng-container matColumnDef="actions">
+      <th mat-header-cell *matHeaderCellDef></th>
+      <td mat-cell *matCellDef="let filament" class="actions-cell">
+        <button mat-icon-button
+                [matTooltip]="'Edit ' + filament.brand + ' ' + filament.colorName"
+                matTooltipPosition="above"
+                aria-label="Edit filament"
+                (click)="openEditDialog(filament)">
+          <mat-icon>edit</mat-icon>
+        </button>
+      </td>
+    </ng-container>
+
     <tr mat-header-row *matHeaderRowDef="columns()"></tr>
     <tr mat-row *matRowDef="let row; columns: columns();"
         [class.row-critical]="classifyStockLevel(row) === 'critical'"
@@ -119,15 +137,7 @@
     </tr>
   </table>
 
-  <!-- Filtered empty state -->
-  @if (filteredFilaments().length === 0 && filaments().length > 0) {
-    <div class="empty-state" role="status">
-      <mat-icon aria-hidden="true">filter_alt_off</mat-icon>
-      <p>No filaments match the current filters</p>
-    </div>
-  }
-
-  <!-- No data empty state -->
+  <!-- Empty state -->
   @if (filaments().length === 0) {
     <div class="empty-state" role="status">
       <mat-icon aria-hidden="true">inventory_2</mat-icon>

frontend/src/app/components/filament-table/filament-table.component.scss

@@ -22,6 +22,35 @@ $color-inactive: #94a3b8;  // Gray — inactive spool
   -webkit-overflow-scrolling: touch;
 }
 
+// Header row: title + add button
+.table-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: $spacing-unit * 2;
+  flex-wrap: wrap;
+  gap: $spacing-unit;
+
+  .table-title {
+    font-size: 18px;
+    font-weight: 600;
+    margin: 0;
+  }
+
+  .add-btn {
+    min-height: $touch-target-min;
+    mat-icon {
+      margin-right: 4px;
+    }
+  }
+}
+
+// Actions cell
+.actions-cell {
+  text-align: center;
+  width: 56px;
+}
+
 // Alert banner for low stock warnings
 .alert-banner {
   display: flex;

frontend/src/app/components/filament-table/filament-table.component.ts

@@ -3,6 +3,7 @@ import {
   Component,
   Input,
   computed,
+  inject,
   signal,
 } from '@angular/core';
 import { CommonModule } from '@angular/common';
@@ -12,13 +13,18 @@ import { MatIconModule } from '@angular/material/icon';
 import { MatProgressBarModule } from '@angular/material/progress-bar';
 import { MatTooltipModule } from '@angular/material/tooltip';
 import { MatSortModule, Sort } from '@angular/material/sort';
-import { FilamentFilterComponent, FilamentFilterState } from '../filament-filter/filament-filter.component';
+import { MatButtonModule } from '@angular/material/button';
+import { MatDialog, MatDialogModule } from '@angular/material/dialog';
 import {
   Filament,
   StockLevel,
   getRemainingPercent,
   classifyStockLevel,
 } from '../../models/filament.model';
+import {
+  FilamentDialogComponent,
+  FilamentDialogData,
+} from '../filament-dialog/filament-dialog.component';
 
 /** Display column definitions for the filament table */
 export type FilamentColumn =
@@ -28,7 +34,8 @@ export type FilamentColumn =
   | 'serial'
   | 'remaining'
   | 'stockLevel'
-  | 'status';
+  | 'status'
+  | 'actions';
 
 @Component({
   selector: 'app-filament-table',
@@ -41,13 +48,16 @@ export type FilamentColumn =
     MatProgressBarModule,
     MatTooltipModule,
     MatSortModule,
-    FilamentFilterComponent,
+    MatButtonModule,
+    MatDialogModule,
   ],
   templateUrl: './filament-table.component.html',
   styleUrl: './filament-table.component.scss',
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class FilamentTableComponent {
+  private readonly dialog = inject(MatDialog);
+
   /** Filament data input — reactive signal for live updates */
   readonly filaments = signal<Filament[]>([]);
 
@@ -67,29 +77,15 @@ export class FilamentTableComponent {
     'remaining',
     'stockLevel',
     'status',
+    'actions',
   ]);
 
   /** Default columns for template binding */
   readonly columns = this._displayedColumns;
 
-  /** Current filter state */
-  readonly filterState = signal<FilamentFilterState>({
-    materialBaseNames: [],
-    colorSearch: '',
-    lowStockOnly: false,
-    activeOnly: false,
-  });
-
   /** Sorted filament data */
   readonly sortedFilaments = signal<Filament[]>([]);
 
-  /** Computed: filtered + sorted filament data for display */
-  readonly filteredFilaments = computed(() => {
-    const data = this.sortedFilaments();
-    const filters = this.filterState();
-    return data.filter((f) => this.matchesFilter(f, filters));
-  });
-
   /** Computed: count of low/critical spools */
   readonly lowStockCount = computed(() =>
     this.filaments().filter(
@@ -228,9 +224,6 @@ export class FilamentTableComponent {
     this.sortedFilaments.set([...data]);
   }
 
-  /** All filament data — for the filter component to derive material options */
-  readonly allFilaments = this.filaments;
-
   /** Handle sort changes from MatSort */
   sortData(sort: Sort): void {
     const data = [...this.filaments()];
@@ -272,46 +265,6 @@ export class FilamentTableComponent {
     this.sortedFilaments.set(sorted);
   }
 
-  /** Handle filter changes from FilamentFilterComponent */
-  onFilterChange(state: FilamentFilterState): void {
-    this.filterState.set(state);
-  }
-
-  /** Check if a filament matches the current filter state */
-  private matchesFilter(filament: Filament, filters: FilamentFilterState): boolean {
-    // Material filter — empty means all
-    if (
-      filters.materialBaseNames.length > 0 &&
-      !filters.materialBaseNames.includes(filament.materialBaseName)
-    ) {
-      return false;
-    }
-
-    // Color search — empty means all
-    if (
-      filters.colorSearch &&
-      !filament.colorName.toLowerCase().includes(filters.colorSearch) &&
-      !filament.colorHex.toLowerCase().includes(filters.colorSearch)
-    ) {
-      return false;
-    }
-
-    // Low stock filter — show only critical/low
-    if (filters.lowStockOnly) {
-      const level = classifyStockLevel(filament);
-      if (level !== 'critical' && level !== 'low') {
-        return false;
-      }
-    }
-
-    // Active only filter
-    if (filters.activeOnly && !filament.isActive) {
-      return false;
-    }
-
-    return true;
-  }
-
   /** Template helper: get remaining percent */
   getRemainingPercent = getRemainingPercent;
 
@@ -353,6 +306,47 @@ export class FilamentTableComponent {
     }
     return `${Math.round(grams)}g`;
   }
+
+  /** Open the add filament dialog. */
+  openAddDialog(): void {
+    const data: FilamentDialogData = {};
+    const ref = this.dialog.open(FilamentDialogComponent, {
+      width: '600px',
+      maxWidth: '95vw',
+      data,
+      autoFocus: 'first-typable',
+    });
+
+    ref.afterClosed().subscribe((result: boolean) => {
+      if (result) {
+        this.onFilamentSaved();
+      }
+    });
+  }
+
+  /** Open the edit filament dialog for a specific spool. */
+  openEditDialog(filament: Filament): void {
+    const data: FilamentDialogData = { filament };
+    const ref = this.dialog.open(FilamentDialogComponent, {
+      width: '600px',
+      maxWidth: '95vw',
+      data,
+      autoFocus: 'first-typable',
+    });
+
+    ref.afterClosed().subscribe((result: boolean) => {
+      if (result) {
+        this.onFilamentSaved();
+      }
+    });
+  }
+
+  /** Called after a successful save — reload filament data. */
+  protected onFilamentSaved(): void {
+    // TODO: Replace with FilamentService.refresh() call when SignalR integration is ready.
+    // For now, this is the hook for refreshing data after a save.
+    // Consumers can override or listen to signal changes.
+  }
 }
 
 /** Compare helper for sorting */

frontend/src/app/models/material.model.ts

@@ -0,0 +1,50 @@
+/**
+ * Material lookup models matching the Extrudex backend Material DTOs.
+ * Used for populating dropdowns in the filament add/edit form.
+ */
+
+/** Material base (e.g., PLA, PETG, ABS). */
+export interface MaterialBase {
+  /** Unique identifier. */
+  id: string;
+  /** Human-readable name (e.g., "PLA", "PETG"). */
+  name: string;
+  /** Density in g/cm³. */
+  densityGperCm3: number;
+  /** Created timestamp (UTC). */
+  createdAt: string;
+  /** Updated timestamp (UTC). */
+  updatedAt: string;
+}
+
+/** Material finish (e.g., Basic, Matte, Silk). */
+export interface MaterialFinish {
+  /** Unique identifier. */
+  id: string;
+  /** Human-readable name (e.g., "Basic", "Matte"). */
+  name: string;
+  /** Foreign key to the parent material base. */
+  materialBaseId: string;
+  /** Name of the parent material base (for display). */
+  materialBaseName: string;
+  /** Created timestamp (UTC). */
+  createdAt: string;
+  /** Updated timestamp (UTC). */
+  updatedAt: string;
+}
+
+/** Material modifier (e.g., Carbon Fiber, Wood Fill). Optional. */
+export interface MaterialModifier {
+  /** Unique identifier. */
+  id: string;
+  /** Human-readable name (e.g., "Carbon Fiber"). */
+  name: string;
+  /** Foreign key to the parent material base. */
+  materialBaseId: string;
+  /** Name of the parent material base (for display). */
+  materialBaseName: string;
+  /** Created timestamp (UTC). */
+  createdAt: string;
+  /** Updated timestamp (UTC). */
+  updatedAt: string;
+}

frontend/src/app/models/paged-response.model.ts

@@ -0,0 +1,13 @@
+/**
+ * Generic paged response wrapper matching the Extrudex backend PagedResponse<T>.
+ */
+export interface PagedResponse<T> {
+  /** The items in this page. */
+  items: T[];
+  /** Total number of items across all pages. */
+  totalCount: number;
+  /** The current page number (1-based). */
+  pageNumber: number;
+  /** The number of items per page. */
+  pageSize: number;
+}

frontend/src/app/services/filament.service.ts

@@ -0,0 +1,134 @@
+import { Injectable, inject } from '@angular/core';
+import { HttpClient } from '@angular/common/http';
+import { Observable } from 'rxjs';
+
+import { environment } from '../../environments/environment';
+import { Filament } from '../models/filament.model';
+import { PagedResponse } from '../models/paged-response.model';
+import {
+  MaterialBase,
+  MaterialFinish,
+  MaterialModifier,
+} from '../models/material.model';
+
+/**
+ * Request body for creating a new filament spool.
+ * Matches the backend CreateFilamentRequest DTO.
+ */
+export interface CreateFilamentRequest {
+  materialBaseId: string;
+  materialFinishId: string;
+  materialModifierId: string | null;
+  brand: string;
+  colorName: string;
+  colorHex: string;
+  weightTotalGrams: number;
+  weightRemainingGrams: number;
+  filamentDiameterMm: number;
+  spoolSerial: string;
+  purchasePrice: number | null;
+  purchaseDate: string | null;
+  isActive: boolean;
+}
+
+/**
+ * Request body for updating an existing filament spool.
+ * Matches the backend UpdateFilamentRequest DTO.
+ */
+export interface UpdateFilamentRequest {
+  materialBaseId: string;
+  materialFinishId: string;
+  materialModifierId: string | null;
+  brand: string;
+  colorName: string;
+  colorHex: string;
+  weightTotalGrams: number;
+  weightRemainingGrams: number;
+  filamentDiameterMm: number;
+  spoolSerial: string;
+  purchasePrice: number | null;
+  purchaseDate: string | null;
+  isActive: boolean;
+}
+
+/**
+ * Service for interacting with the Extrudex filament and material APIs.
+ * Handles CRUD for filament spools and material lookup data.
+ */
+@Injectable({ providedIn: 'root' })
+export class FilamentService {
+  private readonly http = inject(HttpClient);
+  private readonly baseUrl = environment.apiBaseUrl;
+
+  // ── Filament CRUD ────────────────────────────────────────
+
+  /**
+   * Get a paginated list of filament spools.
+   */
+  getFilaments(params?: {
+    pageNumber?: number;
+    pageSize?: number;
+    materialBaseId?: string;
+    materialFinishId?: string;
+    materialModifierId?: string;
+    brand?: string;
+    isActive?: boolean;
+  }): Observable<PagedResponse<Filament>> {
+    return this.http.get<PagedResponse<Filament>>(
+      `${this.baseUrl}/api/filaments`,
+      { params: params as Record<string, string | number | boolean> }
+    );
+  }
+
+  /**
+   * Get a single filament spool by ID.
+   */
+  getFilament(id: string): Observable<Filament> {
+    return this.http.get<Filament>(`${this.baseUrl}/api/filaments/${id}`);
+  }
+
+  /**
+   * Create a new filament spool.
+   */
+  createFilament(request: CreateFilamentRequest): Observable<Filament> {
+    return this.http.post<Filament>(`${this.baseUrl}/api/filaments`, request);
+  }
+
+  /**
+   * Update an existing filament spool.
+   */
+  updateFilament(id: string, request: UpdateFilamentRequest): Observable<Filament> {
+    return this.http.put<Filament>(`${this.baseUrl}/api/filaments/${id}`, request);
+  }
+
+  // ── Material Lookups ─────────────────────────────────────
+
+  /**
+   * Get all material bases (PLA, PETG, ABS, etc.).
+   */
+  getMaterialBases(): Observable<MaterialBase[]> {
+    return this.http.get<MaterialBase[]>(`${this.baseUrl}/api/materials/bases`);
+  }
+
+  /**
+   * Get all material finishes, optionally filtered by material base.
+   */
+  getMaterialFinishes(materialBaseId?: string): Observable<MaterialFinish[]> {
+    const params: Record<string, string> = {};
+    if (materialBaseId) {
+      params['materialBaseId'] = materialBaseId;
+    }
+    return this.http.get<MaterialFinish[]>(`${this.baseUrl}/api/materials/finishes`, { params });
+  }
+
+  /**
+   * Get all material modifiers, optionally filtered by material base.
+   */
+  getMaterialModifiers(materialBaseId?: string): Observable<MaterialModifier[]> {
+    const params: Record<string, string> = {};
+    if (materialBaseId) {
+      params['materialBaseId'] = materialBaseId;
+    }
+    return this.http.get<MaterialModifier[]>(`${this.baseUrl}/api/materials/modifiers`, { params });
+  }
+}

frontend/src/environments/environment.prod.ts

@@ -0,0 +1,8 @@
+/**
+ * Environment configuration for the Extrudex frontend (production).
+ * Override API URL for deployed environments.
+ */
+export const environment = {
+  production: true,
+  apiBaseUrl: '/api',
+};

frontend/src/environments/environment.ts

@@ -0,0 +1,8 @@
+/**
+ * Environment configuration for the Extrudex frontend.
+ * Replace API URL with the actual backend endpoint in production.
+ */
+export const environment = {
+  production: false,
+  apiBaseUrl: 'http://localhost:5000',
+};