fix(print): deterministic PPD locale precedence for media labels (#181)

Refs #181

Co-Authored-By: Devin <devin@cognition.ai>

Packages/ICCeryCore/Sources/ICCeryCore/Print/CupsOptionsFilter.swift

@@ -25,8 +25,9 @@ public enum CupsOptionsFilter {
         "EPIJ_OSColMat", "ColorCorrection", "StpColorCorrection",
         "EpsonColorMode", "ColorModel",
         // Quality
-        "Resolution", "cupsPrintQuality", "Quality", "EPIJ_Quality",
-        "CNIJQuality", "StpQuality", "OutputMode",
+        "Resolution", "cupsPrintQuality", "Quality", "EPIJ_Qual",
+        "EPIJ_Quality", "CNIJQuality", "CNIJPrintQuality",
+        "PrintQuality", "StpQuality", "OutputMode",
         // Duplex
         "Duplex", "sides",
     ]

Packages/ICCeryCore/Sources/ICCeryCore/Print/CupsParsers.swift

@@ -174,8 +174,13 @@ public enum CupsParsers {
 
     /// PPD `*<key> <id>/<Human Label>:` lines → `id → label` map.
     /// Language-qualified forms (`*en_US.<key> id/Label:`) also match.
+    /// Precedence is deterministic, not positional (#181): unqualified
+    /// `*Key` > `en_US.` > `en.` > first-qualified-seen, so a trailing
+    /// locale block (Canon `th.CNIJMediaType`) can never overwrite the
+    /// base English labels — and a qualified-only id still gets its
+    /// first-seen qualified label (R9).
     public static func ppdChoiceLabels(_ ppd: String, key: String) -> [String: String] {
-        var map: [String: String] = [:]
+        var hits: [String: [(qualifier: String?, label: String)]] = [:]
         for rawLine in ppd.split(separator: "\n") {
             var line = rawLine.trimmingCharacters(in: .whitespaces)
             guard line.hasPrefix("*"), !line.hasPrefix("**") else { continue }
@@ -183,7 +188,9 @@ public enum CupsParsers {
             // Optional locale qualifier: `en_US.InputSlot` → `InputSlot`.
             // Only strip when the part before the first `.` looks like
             // a locale (short `xx`/`xx_YY`); real keys containing dots
-            // are left alone.
+            // are left alone. The qualifier is recorded for precedence
+            // rather than dropped (#181).
+            var qualifier: String?
             if let dot = line.firstIndex(of: ".") {
                 let prefix = line[..<dot]
                 let looksLikeLocale = (2...5).contains(prefix.count)
@@ -191,6 +198,7 @@ public enum CupsParsers {
                     && (prefix.count == 2 || prefix.contains("_"))
                 let candidate = line[line.index(after: dot)...]
                 if looksLikeLocale && candidate.hasPrefix(key) {
+                    qualifier = prefix.lowercased()
                     line = String(candidate)
                 }
             }
@@ -201,15 +209,50 @@ public enum CupsParsers {
             rest = String(rest[..<colon])
             // `<id>/<Human label>` — human label after the last `/`.
             guard let slash = rest.firstIndex(of: "/") else { continue }
-            let id = String(rest[..<slash])
-                .trimmingCharacters(in: .whitespaces)
-            let human = String(rest[rest.index(after: slash)...])
-                .trimmingCharacters(in: .whitespaces)
-            if !id.isEmpty { map[id] = human.isEmpty ? id : human }
+            let id = ppdUnescape(String(rest[..<slash])
+                .trimmingCharacters(in: .whitespaces))
+            let human = ppdUnescape(String(rest[rest.index(after: slash)...])
+                .trimmingCharacters(in: .whitespaces))
+            guard !id.isEmpty else { continue }
+            hits[id, default: []].append(
+                (qualifier, human.isEmpty ? id : human))
+        }
+        var map: [String: String] = [:]
+        for (id, candidates) in hits {
+            // First occurrence wins inside each qualifier class, in
+            // file order — same as the old sequential behaviour.
+            map[id] = candidates.first { $0.qualifier == nil }?.label
+                ?? candidates.first { $0.qualifier == "en_us" }?.label
+                ?? candidates.first { $0.qualifier == "en" }?.label
+                ?? candidates[0].label
         }
         return map
     }
 
+    /// PPD `<XX>` hex escapes → the literal byte (`<2F>` → `/`,
+    /// `<20>` → space). Anything that is not `<` + two hex digits +
+    /// `>` passes through untouched (#181).
+    private static func ppdUnescape(_ text: String) -> String {
+        var result = ""
+        var index = text.startIndex
+        while index < text.endIndex {
+            guard text[index] == "<",
+                  let hexEnd = text.index(
+                      index, offsetBy: 3, limitedBy: text.endIndex),
+                  hexEnd < text.endIndex, text[hexEnd] == ">",
+                  let byte = UInt8(
+                      text[text.index(after: index)..<hexEnd], radix: 16)
+            else {
+                result.append(text[index])
+                index = text.index(after: index)
+                continue
+            }
+            result.append(Character(UnicodeScalar(byte)))
+            index = text.index(after: hexEnd)
+        }
+        return result
+    }
+
     // MARK: - Detection (docs/11)
 
     /// Media-type option key in preference order — used both to read a
@@ -232,6 +275,47 @@ public enum CupsParsers {
         return pairs.first(where: { $0.key == "EPIJ_Medi" })?.value
     }
 
+    /// Print-quality option key in preference order — vendor-first,
+    /// weakest last (#183). `OutputMode`/`Resolution` sit last: on some
+    /// drivers they are colour-mode keys, not quality (#180).
+    /// `CNIJPrintMode2`/`CNIJPQualitySlider` are deferred (#16).
+    public static let qualityKeys = [
+        "EPIJ_Qual", "CNIJPrintQuality", "CNIJQuality",
+        "cupsPrintQuality", "PrintQuality", "Quality", "StpQuality",
+        "EPIJ_Quality", "OutputMode", "Resolution",
+    ]
+
+    public static func detectQualityKey(optionKeys: Set<String>) -> String? {
+        qualityKeys.first { optionKeys.contains($0) }
+    }
+
+    /// A single value from a captured `key=value key=value` options
+    /// string — case-insensitive key match (#183 capture-return).
+    public static func extractOption(
+        named key: String,
+        fromOptionsString options: String
+    ) -> String? {
+        lpoptions(options).first {
+            $0.key.caseInsensitiveCompare(key) == .orderedSame
+        }?.value
+    }
+
+    /// Print-quality token from a captured options string — the queue's
+    /// quality key is detected from the roster before extracting (#183).
+    public static func extractQuality(fromOptionsString options: String) -> String? {
+        let pairs = lpoptions(options)
+        guard let key = detectQualityKey(
+            optionKeys: Set(pairs.map(\.key)))
+        else { return nil }
+        return pairs.first(where: { $0.key == key })?.value
+    }
+
+    /// `orientation-requested=3|4` → `"portrait"`/`"landscape"` (#183).
+    public static func extractOrientation(fromOptionsString options: String) -> String? {
+        extractOption(named: "orientation-requested", fromOptionsString: options)
+            .map { $0 == "4" ? "landscape" : "portrait" }
+    }
+
     /// Driver "no colour adjustment" key=value for `lpoptions -l` keys
     /// (docs/11 layer ④): Canon `CNIJIntent2=4` else `CNIJIntent=4`;
     /// Epson `EPIJ_CCor=0` when the key exists else `EPIJ_CMat=3`;

Packages/ICCeryCore/Sources/ICCeryCore/Print/CupsService.swift

@@ -132,8 +132,28 @@ public struct CupsService: Sendable {
                 continue
             }
         }
+
+        // Print quality — the detected roster key's listing maps to
+        // `PrinterQuality` with PPD labels and the `*` default (#183).
+        var qualities: [PrinterQuality] = []
+        var qualityDefault: String?
+        let qualityKey = CupsParsers.detectQualityKey(
+            optionKeys: Set(listings.map(\.key)))
+        if let qualityKey,
+           let listing = listings.first(where: { $0.key == qualityKey }) {
+            let labels = ppd.map {
+                CupsParsers.ppdChoiceLabels($0, key: qualityKey)
+            } ?? [:]
+            qualities = listing.choices.map {
+                PrinterQuality(id: $0, name: labels[$0] ?? $0)
+            }
+            qualityDefault = listing.defaultChoice
+        }
+
         return PrinterCapabilities(
-            trays: trays, paperSizes: sizes, mediaTypes: media)
+            trays: trays, paperSizes: sizes, mediaTypes: media,
+            qualityKey: qualityKey, qualities: qualities,
+            qualityDefault: qualityDefault)
     }
 
     /// The set of option keys a queue advertises — input to
@@ -167,7 +187,11 @@ public struct CupsService: Sendable {
 
     private func loadPPD(for queue: String) -> String? {
         let url = ppdDir.appendingPathComponent("\(queue).ppd")
-        return try? String(contentsOf: url, encoding: .utf8)
+        // UTF-8 first — the Canon Thai labels are UTF-8 and a blanket
+        // Latin-1 read would mojibake them (#181, R10). Latin-1 only
+        // when UTF-8 decoding fails outright.
+        return (try? String(contentsOf: url, encoding: .utf8))
+            ?? (try? String(contentsOf: url, encoding: .isoLatin1))
     }
 
     // MARK: - Spawn

Packages/ICCeryCore/Sources/ICCeryCore/Print/LpArgs.swift

@@ -20,6 +20,7 @@ public enum LpArgsError: LocalizedError, Equatable {
 ///    -o AP.ColorMatchingMode=AP_ApplicationColorMatching
 ///    <captured cups_options>
 ///    <media_type, if no media key already captured>
+///    <quality, if no quality key already captured> (#183)
 ///    <driver bypass, if no bypass key captured>
 ///    <orientation-requested=3|4, unless captured>
 ///    <PageSize, unless captured>
@@ -82,6 +83,15 @@ public enum LpArgs {
             argv += ["-o", "\(mediaKey)=\(mediaType)"]
         }
 
+        // Print quality — after media, before the driver bypass; the
+        // detected queue key is skipped when already captured (#183).
+        if let quality = options.quality,
+           let qualityKey = CupsParsers.detectQualityKey(optionKeys: optionKeys),
+           !addedKeys.contains(qualityKey.lowercased()) {
+            addedKeys.insert(qualityKey.lowercased())
+            argv += ["-o", "\(qualityKey)=\(quality)"]
+        }
+
         // Driver colour bypass — when no bypass key was captured. NOT
         // gated on ppdUncorrectedPassthrough (macOS always bypasses).
         let capturedKeys = Set(

Packages/ICCeryCore/Sources/ICCeryCore/Print/PrinterModels.swift

@@ -66,6 +66,18 @@ public struct PrinterMediaType: Codable, Equatable, Sendable {
     }
 }
 
+/// Print quality: `id` is the option token (e.g. `"303"`), `name` the
+/// human label after PPD enrichment (mirrors `PrinterMediaType`, #183).
+public struct PrinterQuality: Codable, Equatable, Sendable {
+    public var id: String
+    public var name: String
+
+    public init(id: String, name: String) {
+        self.id = id
+        self.name = name
+    }
+}
+
 public struct PrinterCapabilities: Codable, Equatable, Sendable {
     public var trays: [PrinterTray]
     public var paperSizes: [PrinterPaperSize]
@@ -73,17 +85,29 @@ public struct PrinterCapabilities: Codable, Equatable, Sendable {
     /// Always `true` on macOS (spec parity — CUPS honours
     /// `orientation-requested`).
     public var supportsOrientation: Bool
+    /// The queue's detected quality enumeration key
+    /// (`CupsParsers.detectQualityKey`), e.g. `EPIJ_Qual` (#183).
+    public var qualityKey: String?
+    public var qualities: [PrinterQuality]
+    /// The `*`-marked default choice from `lpoptions -l`, if any.
+    public var qualityDefault: String?
 
     public init(
         trays: [PrinterTray] = [],
         paperSizes: [PrinterPaperSize] = [],
         mediaTypes: [PrinterMediaType] = [],
-        supportsOrientation: Bool = true
+        supportsOrientation: Bool = true,
+        qualityKey: String? = nil,
+        qualities: [PrinterQuality] = [],
+        qualityDefault: String? = nil
     ) {
         self.trays = trays
         self.paperSizes = paperSizes
         self.mediaTypes = mediaTypes
         self.supportsOrientation = supportsOrientation
+        self.qualityKey = qualityKey
+        self.qualities = qualities
+        self.qualityDefault = qualityDefault
     }
 }
 
@@ -96,9 +120,12 @@ public struct PrintOptions: Codable, Equatable, Sendable {
     public var paperSource: Int?
     /// `"portrait"` / `"landscape"` → `orientation-requested=3|4`.
     public var orientation: String?
-    /// printtarg layout page size → `PageSize=` (skipped if captured).
+    /// Stage 2 paper token → `PageSize=` (skipped if captured, #183).
     public var paperSize: String?
     public var mediaType: String?
+    /// Print-quality token → `-o <detectedQualityKey>=` (skipped if
+    /// captured, #183).
+    public var quality: String?
     public var ppdUncorrectedPassthrough: Bool?
     /// Space-separated `key=value` captured from
     /// `PMPrintSettingsToOptions` and filtered (docs/11 layer ⑥).
@@ -109,6 +136,7 @@ public struct PrintOptions: Codable, Equatable, Sendable {
         orientation: String? = nil,
         paperSize: String? = nil,
         mediaType: String? = nil,
+        quality: String? = nil,
         ppdUncorrectedPassthrough: Bool? = nil,
         cupsOptions: String? = nil
     ) {
@@ -116,6 +144,7 @@ public struct PrintOptions: Codable, Equatable, Sendable {
         self.orientation = orientation
         self.paperSize = paperSize
         self.mediaType = mediaType
+        self.quality = quality
         self.ppdUncorrectedPassthrough = ppdUncorrectedPassthrough
         self.cupsOptions = cupsOptions
     }

Sources/ICCery/AppEnvironment.swift

@@ -136,9 +136,19 @@ enum UITestHooks {
                     $0.isEmpty ? nil : $0
                 } ?? queue,
                 options: PrintOptions(
+                    orientation: options.flatMap {
+                        CupsParsers.extractOrientation(fromOptionsString: $0)
+                    },
+                    paperSize: options.flatMap {
+                        CupsParsers.extractOption(
+                            named: "PageSize", fromOptionsString: $0)
+                    },
                     mediaType: options.flatMap {
                         CupsParsers.extractMediaType(fromOptionsString: $0)
                     },
+                    quality: options.flatMap {
+                        CupsParsers.extractQuality(fromOptionsString: $0)
+                    },
                     ppdUncorrectedPassthrough: true,
                     cupsOptions: options))
         default:

Sources/ICCery/Print/PrintPanelService.swift

@@ -17,6 +17,21 @@ enum PrintPanelError: LocalizedError {
     }
 }
 
+/// Stage 2 selections pre-applied to the bound print panel before it
+/// opens (#183). This phase consumes `paperSize` + `qualityKey`/
+/// `quality` only; `mediaType` and `orientation` preselect — and the
+/// `PMPageFormat`/`PMPaper` half of paper — are #186's scope.
+struct PrintPanelInitialSelections {
+    /// CUPS `PageSize` token, e.g. `"A4"` / `"Custom.595x842"`.
+    var paperSize: String?
+    /// The queue's detected quality enumeration key, e.g. `EPIJ_Qual`.
+    var qualityKey: String?
+    /// The selected quality token.
+    var quality: String?
+    var mediaType: String?      // #186 consumes
+    var orientation: String?    // #186 consumes
+}
+
 /// Preferences → native `NSPrintPanel` bound to the selected CUPS
 /// queue (issue 13, docs/11).
 ///
@@ -41,7 +56,9 @@ struct PrintPanelService {
     func showProperties(
         queue: String,
         displayName: String?,
-        cupsService: CupsService
+        cupsService: CupsService,
+        initialSelections: PrintPanelInitialSelections =
+            PrintPanelInitialSelections()
     ) async throws -> PrintPropertiesResult? {
         #if DEBUG
         if UITestHooks.printPanelStubbed {
@@ -56,7 +73,8 @@ struct PrintPanelService {
         let optionKeys = (try? await cupsService.optionKeys(for: queue))
             ?? []
         return try runNativePanel(
-            queue: queue, displayName: display, optionKeys: optionKeys)
+            queue: queue, displayName: display, optionKeys: optionKeys,
+            initialSelections: initialSelections)
     }
 
     // MARK: - Panel
@@ -64,7 +82,8 @@ struct PrintPanelService {
     private func runNativePanel(
         queue: String,
         displayName: String?,
-        optionKeys: Set<String>
+        optionKeys: Set<String>,
+        initialSelections: PrintPanelInitialSelections
     ) throws -> PrintPropertiesResult? {
         let printInfo = NSPrintInfo()
         var pmPrinter: PMPrinter?
@@ -89,6 +108,9 @@ struct PrintPanelService {
             // queue but are not fatal when they fail.
             _ = PMSessionDefaultPrintSettings(session, settings)
             _ = PMSessionDefaultPageFormat(session, pageFormat)
+            // Initial selections — after `PMSessionDefault*`, before
+            // ColorSync suppression ②–⑤ (locked write order, #183).
+            applyInitialSelections(initialSelections, to: settings)
             boundViaPM = true
         } else {
             // Fallback: NSPrinter by display name (docs/11 §binding).
@@ -138,7 +160,9 @@ struct PrintPanelService {
 
         // ⑥ Capture the user's choices — filtered replay options plus
         // the media type they picked. Re-fetch the settings handle so
-        // we read back what the modal wrote.
+        // we read back what the modal wrote. Paper size, quality, and
+        // orientation ride back parsed from the captured `k=v` string
+        // (#183); the PDE may rewrite or drop them (R12).
         var cupsOptions: String?
         var mediaType: String?
         if boundViaPM {
@@ -148,6 +172,7 @@ struct PrintPanelService {
             cupsOptions = captured.cupsOptions
             mediaType = captured.mediaType
         }
+        let capturedOptions = cupsOptions ?? ""
         return PrintPropertiesResult(
             selectedPrinter: boundViaPM
                 ? Self.currentPrinterID(
@@ -156,11 +181,35 @@ struct PrintPanelService {
                     fallback: queue)
                 : nil,
             options: PrintOptions(
+                orientation: CupsParsers.extractOrientation(
+                    fromOptionsString: capturedOptions),
+                paperSize: CupsParsers.extractOption(
+                    named: "PageSize", fromOptionsString: capturedOptions),
                 mediaType: mediaType,
+                quality: CupsParsers.extractQuality(
+                    fromOptionsString: capturedOptions),
                 ppdUncorrectedPassthrough: true,
                 cupsOptions: cupsOptions))
     }
 
+    /// Initial-selection `PMPrintSettings` writes — paper size and
+    /// quality only this phase; media type / orientation and the
+    /// `PMPageFormat`/`PMPaper` paper half are #186's contract.
+    private func applyInitialSelections(
+        _ selections: PrintPanelInitialSelections,
+        to settings: PMPrintSettings
+    ) {
+        if let paperSize = selections.paperSize {
+            _ = PMPrintSettingsSetValue(
+                settings, "PageSize" as CFString,
+                paperSize as CFString, false)
+        }
+        if let key = selections.qualityKey, let value = selections.quality {
+            _ = PMPrintSettingsSetValue(
+                settings, key as CFString, value as CFString, false)
+        }
+    }
+
     // MARK: - PM helpers
 
     /// `PMPrinter` → `PMObject` for `PMRelease` — the Carbon API wants

Sources/ICCery/Print/PrintSessionViewModel.swift

@@ -7,12 +7,20 @@ import ICCeryCore
 final class PrintSessionViewModel: ObservableObject {
     let wizard: WizardViewModel
     let environment: AppEnvironment
+    /// Stage 1/2 form state — read for paper seeding/mirroring only;
+    /// `workflow.pageSize` is the printtarg layout and is never written
+    /// back from the print side (#183).
+    weak var workflow: TargetWorkflowViewModel?
 
     @Published var printers: [Printer] = []
     @Published var selectedPrinter = ""
     @Published var printerCaps = PrinterCapabilities()
     @Published var selectedTray: Int?
     @Published var selectedMediaType: String?
+    /// `PrinterPaperSize.id` — `0` is the synthetic custom entry (#183).
+    @Published var selectedPaperSize: Int?
+    /// Print-quality option token, e.g. `"303"` (#183).
+    @Published var selectedQuality: String?
     @Published var printOrientation = "portrait"
     @Published var capturedCupsOptions: [String: String] = [:]
     @Published var printNotice: Notice?
@@ -75,22 +83,79 @@ final class PrintSessionViewModel: ObservableObject {
             if selectedTray == nil {
                 selectedTray = printerCaps.trays.first?.id
             }
+            if selectedQuality == nil {
+                selectedQuality = printerCaps.qualityDefault
+                    ?? printerCaps.qualities.first?.id
+            }
+            // Caps reload is a re-mirror trigger for the paper picker
+            // (#183 E4) — pageSize + printer changes route here too.
+            seedPaperSelection()
         } catch {
             printerCaps = PrinterCapabilities()
         }
     }
 
+    // MARK: - Paper / quality selection (#183)
+
+    /// Seed `selectedPaperSize` from Stage 1's `workflow.pageSize`:
+    /// a capability whose name matches `pageSize.rawValue` → its id;
+    /// `.custom` → the synthetic `Custom.<pt>x<pt>` entry (`id: 0`);
+    /// no match → nil (never guess). Called only on pageSize / printer /
+    /// caps triggers — never on unrelated publishes (R14).
+    func seedPaperSelection() {
+        guard let pageSize = workflow?.pageSize else { return }
+        if pageSize == .custom {
+            let token = customPaperToken()
+            if let index = printerCaps.paperSizes.firstIndex(where: { $0.id == 0 }) {
+                printerCaps.paperSizes[index].name = token
+            } else {
+                printerCaps.paperSizes.append(
+                    PrinterPaperSize(id: 0, name: token))
+            }
+            selectedPaperSize = 0
+            return
+        }
+        selectedPaperSize = printerCaps.paperSizes
+            .first { $0.name == pageSize.rawValue }?.id
+    }
+
+    /// `Custom.<w>x<h>` in **points** — mm × 72/25.4 (#183 E5/R8). The
+    /// PPD template token `Custom.WIDTHxHEIGHT` is never emitted verbatim.
+    func customPaperToken() -> String {
+        let w = workflow?.customPageW ?? 0
+        let h = workflow?.customPageH ?? 0
+        let wPt = (w * 72.0 / 25.4).rounded()
+        let hPt = (h * 72.0 / 25.4).rounded()
+        return "Custom.\(Int(wPt))x\(Int(hPt))"
+    }
+
+    /// The CUPS `PageSize` token for the current Stage 2 pick — live
+    /// `Custom.<pt>x<pt>` for the synthetic entry, else the capability
+    /// name. This is what `lp -o PageSize=` sees.
+    var selectedPaperSizeToken: String? {
+        guard let id = selectedPaperSize else { return nil }
+        if id == 0 { return customPaperToken() }
+        return printerCaps.paperSizes.first { $0.id == id }?.name
+    }
+
     func openPrinterPreferences() {
         guard !selectedPrinter.isEmpty else { return }
         let queue = selectedPrinter
         let displayName = printers.first { $0.name == queue }?.displayName
         let cups = environment.cupsService
+        let selections = PrintPanelInitialSelections(
+            paperSize: selectedPaperSizeToken,
+            qualityKey: printerCaps.qualityKey,
+            quality: selectedQuality,
+            mediaType: nil,
+            orientation: nil)
         Task { @MainActor in
             do {
                 guard let result = try await PrintPanelService()
                     .showProperties(
                         queue: queue, displayName: displayName,
-                        cupsService: cups)
+                        cupsService: cups,
+                        initialSelections: selections)
                 else {
                     printNotice = Notice(
                         kind: .info,
@@ -111,6 +176,17 @@ final class PrintSessionViewModel: ObservableObject {
                 if let media = result.options.mediaType {
                     selectedMediaType = media
                 }
+                // Capture-return (#183): a dialog paper/quality change
+                // updates the Stage 2 selections — never
+                // `workflow.pageSize` (printtarg layout is sacred).
+                if let paper = result.options.paperSize,
+                   let match = printerCaps.paperSizes
+                       .first(where: { $0.name == paper }) {
+                    selectedPaperSize = match.id
+                }
+                if let quality = result.options.quality {
+                    selectedQuality = quality
+                }
                 printNotice = Notice(
                     kind: .info,
                     text: "Settings captured for \(selectedPrinter).",
@@ -122,7 +198,7 @@ final class PrintSessionViewModel: ObservableObject {
         }
     }
 
-    func printAllPages(from result: PrinttargResult, pageSize: PageSize) {
+    func printAllPages(from result: PrinttargResult) {
         guard !isPrinting else { return }
         isPrinting = true
         let task = Task { @MainActor [weak self] in
@@ -132,7 +208,7 @@ final class PrintSessionViewModel: ObservableObject {
             var printed = 0
             for page in result.pages {
                 do {
-                    try await spool(page, index: page.index, pageSize: pageSize)
+                    try await spool(page, index: page.index)
                     printed += 1
                 } catch {
                     printNotice = Notice(
@@ -156,13 +232,13 @@ final class PrintSessionViewModel: ObservableObject {
         printTask = task
     }
 
-    func printPage(_ page: GalleryPage, pageSize: PageSize) {
+    func printPage(_ page: GalleryPage) {
         guard !isPrinting else { return }
         isPrinting = true
         let task = Task { @MainActor [weak self] in
             guard let self else { return }
             do {
-                try await spool(page, index: page.index, pageSize: pageSize)
+                try await spool(page, index: page.index)
                 printNotice = Notice(
                     kind: .info,
                     text: "Sent \(page.page.filename) to \(selectedPrinter).",
@@ -180,14 +256,18 @@ final class PrintSessionViewModel: ObservableObject {
         printTask = task
     }
 
-    private func spool(_ page: GalleryPage, index: Int, pageSize: PageSize) async throws {
+    private func spool(_ page: GalleryPage, index: Int) async throws {
         guard !selectedPrinter.isEmpty else {
             throw CupsError.noPrinterSelected
         }
+        // The Stage 2 paper token is what `lp -o PageSize=` sees;
+        // `workflow.pageSize` remains the printtarg layout input only
+        // (#183).
         let options = PrintOptions(
             orientation: printOrientation,
-            paperSize: pageSize == .custom ? nil : pageSize.rawValue,
+            paperSize: selectedPaperSizeToken,
             mediaType: selectedMediaType,
+            quality: selectedQuality,
             ppdUncorrectedPassthrough: true,
             cupsOptions: capturedCupsOptions[selectedPrinter])
         try await environment.cupsService.printTarget(

Sources/ICCery/Stage2View.swift

@@ -255,6 +255,7 @@ struct Stage2View: View {
                 .onChange(of: workflow.print.selectedPrinter) { _ in
                     workflow.print.selectedTray = nil
                     workflow.print.selectedMediaType = nil
+                    workflow.print.selectedQuality = nil
                     Task { @MainActor in await workflow.print.reloadSelectedCapabilities() }
                 }
                 if let selected = workflow.print.printers
@@ -279,7 +280,9 @@ struct Stage2View: View {
                 .accessibilityIdentifier("btnPrinterProperties")
             }
 
-            // Tray / media / orientation — from queue capabilities.
+            // Tray / media / paper / quality / orientation — from
+            // queue capabilities. Extracted subviews keep every
+            // ViewBuilder ≤10 children (R13).
             HStack(spacing: 14) {
                 if !workflow.print.printerCaps.trays.isEmpty {
                     Picker("Tray", selection: $workflow.print.selectedTray) {
@@ -301,6 +304,12 @@ struct Stage2View: View {
                     .accessibilityIdentifier("mediaTypeGroup")
                     .accessibilityIdentifier("printerMediaTypeSelect")
                 }
+                if !workflow.print.printerCaps.paperSizes.isEmpty {
+                    paperSizeGroup
+                }
+                if !workflow.print.printerCaps.qualities.isEmpty {
+                    qualityGroup
+                }
                 HStack(spacing: 0) {
                     Button("Portrait") { workflow.print.printOrientation = "portrait" }
                         .buttonStyle(.bordered)
@@ -313,11 +322,13 @@ struct Stage2View: View {
                 }
                 Spacer()
             }
+            // Stage 1 owns the custom dimensions — the caption lives
+            // inside `paperSizeGroup` (#183).
 
             HStack(spacing: 8) {
                 Button(action: {
                     if let result = workflow.printtargResult {
-                        workflow.print.printAllPages(from: result, pageSize: workflow.pageSize)
+                        workflow.print.printAllPages(from: result)
                     }
                 }) {
                     Label(workflow.print.isPrinting ? "Printing…" : "Print All",
@@ -344,6 +355,50 @@ struct Stage2View: View {
         .onChange(of: workflow.printtargResult?.pages.count) { _ in
             schedulePrinterRefresh()
         }
+        // Editable picker that re-mirrors Stage 1's pageSize (#183 E4).
+        .onChange(of: workflow.pageSize) { _ in
+            workflow.print.seedPaperSelection()
+        }
+    }
+
+    /// Paper picker + custom-size caption under the `paperSizeGroup`
+    /// container (#183). `caps.paperSizes` plus the synthetic custom
+    /// entry (`id: 0`, shown as `Custom (W×H mm)`).
+    private var paperSizeGroup: some View {
+        VStack(alignment: .leading, spacing: 4) {
+            Picker("Paper", selection: $workflow.print.selectedPaperSize) {
+                ForEach(workflow.print.printerCaps.paperSizes, id: \.id) { size in
+                    Text(size.id == 0
+                         ? "Custom (\(Int(workflow.customPageW))×\(Int(workflow.customPageH)) mm)"
+                         : size.name)
+                        .tag(Optional(size.id))
+                }
+            }
+            .frame(maxWidth: 200)
+            .accessibilityIdentifier("printerPaperSizeSelect")
+            if workflow.print.selectedPaperSize == 0 {
+                Text("Custom (\(Int(workflow.customPageW))×\(Int(workflow.customPageH)) mm)")
+                    .font(.caption)
+                    .foregroundStyle(.secondary)
+            }
+        }
+        .accessibilityElement(children: .contain)
+        .accessibilityIdentifier("paperSizeGroup")
+    }
+
+    /// Quality picker — driver tokens with PPD-enriched labels (#183).
+    private var qualityGroup: some View {
+        VStack(alignment: .leading, spacing: 4) {
+            Picker("Quality", selection: $workflow.print.selectedQuality) {
+                ForEach(workflow.print.printerCaps.qualities, id: \.id) {
+                    Text($0.name).tag(Optional($0.id))
+                }
+            }
+            .frame(maxWidth: 200)
+            .accessibilityIdentifier("printerQualitySelect")
+        }
+        .accessibilityElement(children: .contain)
+        .accessibilityIdentifier("qualityGroup")
     }
 
     /// Auto-enumerates printers once a manifest exists and whenever it
@@ -392,7 +447,7 @@ private struct GalleryPageView: View {
             Text("\(page.page.patches) patches · " +
                  "\(Int(page.page.widthMm))×\(Int(page.page.heightMm)) mm")
                 .font(.caption2).foregroundStyle(.secondary)
-            Button("Print") { workflow.print.printPage(page, pageSize: workflow.pageSize) }
+            Button("Print") { workflow.print.printPage(page) }
                 .disabled(workflow.print.isPrinting
                           || workflow.print.selectedPrinter.isEmpty)
                 .accessibilityIdentifier("btnPrintPage-\(page.index)")

Sources/ICCery/TargetWorkflowViewModel.swift

@@ -137,6 +137,9 @@ final class TargetWorkflowViewModel: ObservableObject {
             environment: environment
         )
         self.print = PrintSessionViewModel(wizard: wizard, environment: environment)
+        // Paper-size seeding reads the Stage 1 form through this weak
+        // back-reference; the print side never writes it (#183).
+        self.print.workflow = self
         self.calibration = nil
         self.calibration = CalibrationViewModel(
             workflow: self,

Tests/ICCeryCoreTests/CupsOptionsFilterTests.swift

@@ -24,6 +24,18 @@ final class CupsOptionsFilterTests: XCTestCase {
         XCTAssertEqual(CupsOptionsFilter.filter(raw), raw)
     }
 
+    /// #180 — a captured `EPIJ_Qual` (and the other canonical quality
+    /// keys) survives the filter so it wins over the Stage 2 explicit
+    /// quality in `LpArgs`.
+    func testKeepsQualityKeys() {
+        let raw = "EPIJ_Qual=304 CNIJPrintQuality=3 PrintQuality=2 "
+            + "cupsPrintQuality=High Quality=Best "
+            + "com.apple.print.JobTicket.PMTotalSidesImaged=0"
+        XCTAssertEqual(CupsOptionsFilter.filter(raw),
+            "EPIJ_Qual=304 CNIJPrintQuality=3 PrintQuality=2 "
+            + "cupsPrintQuality=High Quality=Best")
+    }
+
     func testKeepsUnknown() {
         let raw = "VendorFooBar=baz MediaType=Plain"
         XCTAssertEqual(CupsOptionsFilter.filter(raw), raw)

Tests/ICCeryCoreTests/CupsParserTests.swift

@@ -4,7 +4,7 @@ import Foundation
 
 /// Issue 12 — CUPS enumeration parsers on recorded fixtures
 /// (docs/10–11). No live `lpstat`/`lpoptions` is spawned here.
-final class CupsParsersTests: XCTestCase {
+final class CupsParserTests: XCTestCase {
 
     // Recorded on an Epson XP-55 + Canon Pro9500 host.
     private let lpstatE = """
@@ -30,7 +30,7 @@ final class CupsParsersTests: XCTestCase {
         MediaType/Media Type: *Stationery PhotographicHighGloss Photographic PhotographicMatte Envelope
         ColorModel/Output Mode: *RGB Gray
         Duplex/Duplex: *None DuplexNoTumble DuplexTumble
-        cupsPrintQuality/cupsPrintQuality: Draft *Normal High
+        EPIJ_Qual/Print Quality: 301 302 *303 308 304 305 307
         """
 
     func testDestinations() {
@@ -117,6 +117,121 @@ final class CupsParsersTests: XCTestCase {
         XCTAssertNil(CupsParsers.detectMediaTypeKey(optionKeys: ["PageSize"]))
     }
 
+    // MARK: - #183 quality key + option extraction
+
+    func testQualityKeyRosterOrder() {
+        // Vendor keys beat the generic ones; OutputMode/Resolution sit
+        // last (they are colour-ish keys on some drivers — #183/#180).
+        XCTAssertEqual(CupsParsers.detectQualityKey(
+            optionKeys: ["EPIJ_Qual", "Quality", "OutputMode"]), "EPIJ_Qual")
+        // A full Epson key set — EPIJ_Qual wins over the colour-mode
+        // key, the generic keys, and Resolution (#180, R11).
+        XCTAssertEqual(CupsParsers.detectQualityKey(
+            optionKeys: ["EPIJ_Qual", "OutputMode", "Resolution",
+                         "cupsPrintQuality", "PrintQuality",
+                         "ColorModel"]), "EPIJ_Qual")
+        XCTAssertEqual(CupsParsers.detectQualityKey(
+            optionKeys: ["Quality", "OutputMode", "Resolution"]), "Quality")
+        XCTAssertEqual(CupsParsers.detectQualityKey(
+            optionKeys: ["cupsPrintQuality", "CNIJQuality"]),
+            "CNIJQuality")
+        XCTAssertEqual(CupsParsers.detectQualityKey(
+            optionKeys: ["OutputMode", "Resolution"]), "OutputMode")
+        XCTAssertEqual(CupsParsers.detectQualityKey(
+            optionKeys: ["Resolution"]), "Resolution")
+        XCTAssertNil(CupsParsers.detectQualityKey(optionKeys: ["PageSize"]))
+    }
+
+    func testCapabilitiesQuality() {
+        let service = CupsService()
+        let listings = CupsParsers.lpoptionsList(lpoptionsL)
+        let caps = service.capabilities(from: listings, ppd: nil)
+
+        // EPIJ_Qual is the roster member — all seven Epson codes
+        // enumerate in the driver's own (non-sorted) order (#180).
+        XCTAssertEqual(caps.qualityKey, "EPIJ_Qual")
+        XCTAssertEqual(caps.qualities.map(\.id),
+            ["301", "302", "303", "308", "304", "305", "307"])
+        XCTAssertEqual(caps.qualityDefault, "303")
+    }
+
+    func testCapabilitiesQualityPpdLabels() {
+        // Epson XP-55 PPD fragment — the seven `*EPIJ_Qual id/Label`
+        // lines in the driver's own order (#180).
+        let ppd = """
+            *OpenUI *EPIJ_Qual/Print Quality: PickOne
+            *DefaultEPIJ_Qual: 303
+            *EPIJ_Qual 301/Fast Economy: ""
+            *EPIJ_Qual 302/Economy: ""
+            *EPIJ_Qual 303/Normal: ""
+            *EPIJ_Qual 308/Draft: ""
+            *EPIJ_Qual 304/Fine: ""
+            *EPIJ_Qual 305/Quality: ""
+            *EPIJ_Qual 307/Best Quality: ""
+            *CloseUI: *EPIJ_Qual
+            """
+        let service = CupsService()
+        let listings = CupsParsers.lpoptionsList(
+            "EPIJ_Qual/Print Quality: 301 302 *303 308 304 305 307\n")
+        let caps = service.capabilities(from: listings, ppd: ppd)
+
+        XCTAssertEqual(caps.qualityKey, "EPIJ_Qual")
+        XCTAssertEqual(caps.qualities, [
+            PrinterQuality(id: "301", name: "Fast Economy"),
+            PrinterQuality(id: "302", name: "Economy"),
+            PrinterQuality(id: "303", name: "Normal"),
+            PrinterQuality(id: "308", name: "Draft"),
+            PrinterQuality(id: "304", name: "Fine"),
+            PrinterQuality(id: "305", name: "Quality"),
+            PrinterQuality(id: "307", name: "Best Quality"),
+        ])
+        XCTAssertEqual(caps.qualityDefault, "303")
+    }
+
+    /// #180 — the Epson listing also carries `OutputMode` (a colour
+    /// mode) and `Resolution`; detection must still pick `EPIJ_Qual`.
+    func testCapabilitiesQualityEpsonDetection() {
+        let service = CupsService()
+        let listings = CupsParsers.lpoptionsList("""
+            PageSize/Media Size: *A4 Letter
+            EPIJ_Qual/Print Quality: 301 302 *303 308 304 305 307
+            OutputMode/Color Mode: *Color Mono
+            Resolution/Resolution: *360dpi 720dpi
+            """)
+        let caps = service.capabilities(from: listings, ppd: nil)
+
+        XCTAssertEqual(caps.qualityKey, "EPIJ_Qual")
+        XCTAssertEqual(caps.qualities.count, 7)
+        XCTAssertEqual(caps.qualityDefault, "303")
+        XCTAssertFalse(caps.qualities.contains { $0.id == "Color" })
+    }
+
+    func testExtractOption() {
+        let options = "PageSize=A4 EPIJ_Qual=303 printer-info='EPSON XP-55'"
+        XCTAssertEqual(CupsParsers.extractOption(
+            named: "PageSize", fromOptionsString: options), "A4")
+        // Case-insensitive key match.
+        XCTAssertEqual(CupsParsers.extractOption(
+            named: "epij_qual", fromOptionsString: options), "303")
+        // Quoted values come back unquoted.
+        XCTAssertEqual(CupsParsers.extractOption(
+            named: "printer-info", fromOptionsString: options), "EPSON XP-55")
+        XCTAssertNil(CupsParsers.extractOption(
+            named: "InputSlot", fromOptionsString: options))
+    }
+
+    func testExtractQualityAndOrientation() {
+        let options = "orientation-requested=4 OutputMode=Gray EPIJ_Qual=305"
+        XCTAssertEqual(CupsParsers.extractQuality(
+            fromOptionsString: options), "305")
+        XCTAssertEqual(CupsParsers.extractOrientation(
+            fromOptionsString: options), "landscape")
+        XCTAssertNil(CupsParsers.extractQuality(
+            fromOptionsString: "PageSize=A4"))
+        XCTAssertNil(CupsParsers.extractOrientation(
+            fromOptionsString: "PageSize=A4"))
+    }
+
     func testDriverBypass() {
         func pair(_ keys: Set<String>) -> String? {
             CupsParsers.detectDriverColorBypass(optionKeys: keys)
@@ -131,4 +246,177 @@ final class CupsParsersTests: XCTestCase {
         XCTAssertEqual(pair(["EpsonColorMode"]), "EpsonColorMode=Off")
         XCTAssertNil(pair(["PageSize"]))
     }
+
+    // MARK: - #181 Canon media locale precedence + PPD encoding
+
+    /// The 18 Canon Pro9500 media types named in the issue — the ids
+    /// are the numeric codes the driver enumerates via `lpoptions -l`.
+    private let canonMedia: [(id: String, label: String)] = [
+        ("0", "Plain Paper"),
+        ("1", "Photo Paper Plus Glossy II"),
+        ("2", "Photo Paper Pro Platinum N"),
+        ("3", "Photo Paper Pro Platinum"),
+        ("4", "Photo Paper Pro Luster"),
+        ("5", "Photo Paper Plus Semi-gloss"),
+        ("6", "Matte Photo Paper"),
+        ("7", "Fine Art \"Photo Rag\""),
+        ("8", "Fine Art \"Museum Etching\""),
+        ("9", "Photo Paper Pro Premium Matte"),
+        ("10", "Fine Art Premium Matte"),
+        ("11", "Other Fine Art Paper"),
+        ("12", "Canvas"),
+        ("13", "Board Paper"),
+        ("14", "Ink Jet Hagaki"),
+        ("15", "Hagaki"),
+        ("16", "Printable disc"),
+        ("17", "Printable disc (bleed-proof)"),
+    ]
+
+    /// Canon Pro9500-shaped fragment: the unqualified base block comes
+    /// early and the `th.` block trails at the end — the ordering that
+    /// let Thai overwrite English under last-write-wins (#181).
+    private var canonPPD: String {
+        var lines = [
+            "*OpenUI *CNIJMediaType/Media Type: PickOne",
+            "*DefaultCNIJMediaType: 0",
+        ]
+        for media in canonMedia {
+            lines.append(
+                "*CNIJMediaType \(media.id)/\(media.label): \"\"")
+        }
+        lines.append("*CloseUI: *CNIJMediaType")
+        for media in canonMedia {
+            lines.append(
+                "*th.CNIJMediaType \(media.id)/กระดาษ\(media.id): \"\"")
+        }
+        return lines.joined(separator: "\n")
+    }
+
+    func testPpdLabelsUnqualifiedSurvivesTrailingThai() {
+        let labels = CupsParsers.ppdChoiceLabels(
+            canonPPD, key: "CNIJMediaType")
+        XCTAssertEqual(labels["0"], "Plain Paper")
+        XCTAssertEqual(labels["17"], "Printable disc (bleed-proof)")
+    }
+
+    func testPpdLabelsUnqualifiedWinsRegardlessOfOrder() {
+        // `th.` block first — precedence is deterministic, not
+        // positional (#181, E3).
+        let ppd = """
+            *th.CNIJMediaType 0/กระดาษธรรมดา: ""
+            *CNIJMediaType 0/Plain Paper: ""
+            """
+        let labels = CupsParsers.ppdChoiceLabels(ppd, key: "CNIJMediaType")
+        XCTAssertEqual(labels["0"], "Plain Paper")
+    }
+
+    func testPpdLabelsQualifiedFallbackOrder() {
+        // en_US > en > first-qualified-seen (#181, E3).
+        let ppd = """
+            *en.CNIJMediaType 1/English Label: ""
+            *en_US.CNIJMediaType 1/US English Label: ""
+            *th.CNIJMediaType 1/กระดาษ: ""
+            *fr.CNIJMediaType 2/Français: ""
+            *de.CNIJMediaType 2/Deutsch: ""
+            """
+        let labels = CupsParsers.ppdChoiceLabels(ppd, key: "CNIJMediaType")
+        XCTAssertEqual(labels["1"], "US English Label")
+        // A qualified-only id still gets its first-seen qualified
+        // label — never left unlabeled (R9).
+        XCTAssertEqual(labels["2"], "Français")
+    }
+
+    func testPpdLabelsHexEscapeDecoding() {
+        let ppd = """
+            *CNIJMediaType 3/Photo Paper Plus Glossy<2F>Matte: ""
+            *CNIJMediaType 4/Plain<20>Paper: ""
+            *CNIJMediaType 5/Bad<ZZ>Escape: ""
+            """
+        let labels = CupsParsers.ppdChoiceLabels(ppd, key: "CNIJMediaType")
+        XCTAssertEqual(labels["3"], "Photo Paper Plus Glossy/Matte")
+        XCTAssertEqual(labels["4"], "Plain Paper")
+        XCTAssertEqual(labels["5"], "Bad<ZZ>Escape")
+    }
+
+    /// Every `CNIJMediaType` choice enumerated by `lpoptions -l` gets a
+    /// non-Thai label (E1 — the true count is the hardware gate's, so
+    /// no count is hardcoded here); the 18 named AC labels are
+    /// spot-checked.
+    func testCapabilitiesCanonMediaAllNonThai() {
+        var choices = canonMedia.map(\.id)
+        choices[0] = "*\(choices[0])"
+        let listings = CupsParsers.lpoptionsList(
+            "CNIJMediaType/Media Type: \(choices.joined(separator: " "))\n")
+        let caps = CupsService().capabilities(from: listings, ppd: canonPPD)
+
+        XCTAssertEqual(caps.mediaTypes.count, canonMedia.count)
+        for type in caps.mediaTypes {
+            XCTAssertFalse(type.name.unicodeScalars.contains {
+                (0x0E00...0x0E7F).contains($0.value)
+            }, "Thai label leaked into \(type.id): \(type.name)")
+        }
+        for media in canonMedia {
+            XCTAssertEqual(
+                caps.mediaTypes.first { $0.id == media.id }?.name,
+                media.label)
+        }
+    }
+
+    /// UTF-8 PPD carrying Thai labels decodes intact — the English
+    /// base block wins precedence and no mojibake leaks through (#181,
+    /// R10). Exercises `loadPPD` through `capabilities(for:)`.
+    func testLoadPPDUtf8ThaiSurvivesDecode() async throws {
+        let (service, root) = try makeCupsService(
+            ppdData: Data(canonPPD.utf8),
+            listing: "CNIJMediaType/Media Type: *0 1")
+        defer { try? FileManager.default.removeItem(at: root) }
+
+        let caps = try await service.capabilities(for: "Canon_Test")
+        XCTAssertEqual(caps.mediaTypes.map(\.name),
+            ["Plain Paper", "Photo Paper Plus Glossy II"])
+    }
+
+    /// A PPD that is not valid UTF-8 (lone `0xE9` for `é`) falls back
+    /// to ISO-Latin-1 instead of yielding nil → raw ids (#181, R10).
+    func testLoadPPDLatin1Fallback() async throws {
+        let ppd = "*CNIJMediaType 0/Papier Couché: \"\"\n"
+        let (service, root) = try makeCupsService(
+            ppdData: ppd.data(using: .isoLatin1)!,
+            listing: "CNIJMediaType/Media Type: *0")
+        defer { try? FileManager.default.removeItem(at: root) }
+
+        let caps = try await service.capabilities(for: "Canon_Test")
+        XCTAssertEqual(caps.mediaTypes,
+            [PrinterMediaType(id: "0", name: "Papier Couché")])
+    }
+
+    /// Fixture `lpoptions` + `ppdDir` so `capabilities(for:)` reaches
+    /// the private `loadPPD` — same mock style as
+    /// `MediaLibraryViewModelTests.installMockCups`.
+    private func makeCupsService(
+        ppdData: Data,
+        listing: String,
+        queue: String = "Canon_Test"
+    ) throws -> (CupsService, URL) {
+        let root = FileManager.default.temporaryDirectory
+            .appendingPathComponent("iccery-ppd-\(UUID().uuidString)")
+        let bin = root.appendingPathComponent("bin")
+        let ppdDir = root.appendingPathComponent("ppd")
+        for dir in [bin, ppdDir] {
+            try FileManager.default.createDirectory(
+                at: dir, withIntermediateDirectories: true)
+        }
+        let lpoptions = """
+            #!/bin/sh
+            printf '%s\\n' '\(listing)'
+            """
+        let scriptURL = bin.appendingPathComponent("lpoptions")
+        try lpoptions.write(to: scriptURL, atomically: true, encoding: .utf8)
+        try FileManager.default.setAttributes(
+            [.posixPermissions: 0o755], ofItemAtPath: scriptURL.path)
+        try ppdData.write(to: ppdDir.appendingPathComponent("\(queue).ppd"))
+        return (CupsService(
+            processManager: ProcessManager(),
+            binaryDir: bin, ppdDir: ppdDir), root)
+    }
 }

Tests/ICCeryCoreTests/LpArgsTests.swift

@@ -101,6 +101,61 @@ final class LpArgsTests: XCTestCase {
         XCTAssertTrue(capturedSize.contains("PageSize=Letter"))
     }
 
+    // MARK: - #183 print quality
+
+    func testQualityDerived() throws {
+        let argv = try build(
+            options: PrintOptions(
+                orientation: "portrait", mediaType: "Photo", quality: "305"),
+            optionKeys: ["EPIJ_Qual", "MediaType"])
+        XCTAssertTrue(argv.contains("EPIJ_Qual=305"))
+        // Emit order: after the media option, before orientation.
+        let media = argv.firstIndex(of: "MediaType=Photo")!
+        let quality = argv.firstIndex(of: "EPIJ_Qual=305")!
+        let orient = argv.firstIndex(of: "orientation-requested=3")!
+        XCTAssertTrue(media < quality && quality < orient)
+    }
+
+    func testQualityDetectedKey() throws {
+        // The detected queue key is used, not a hardcoded one.
+        let argv = try build(
+            options: PrintOptions(quality: "High"),
+            optionKeys: ["cupsPrintQuality"])
+        XCTAssertTrue(argv.contains("cupsPrintQuality=High"))
+    }
+
+    func testCapturedWinsQuality() throws {
+        let argv = try build(
+            options: PrintOptions(
+                quality: "303",
+                cupsOptions: "EPIJ_Qual=308"),
+            optionKeys: ["EPIJ_Qual"])
+        XCTAssertTrue(argv.contains("EPIJ_Qual=308"))
+        XCTAssertFalse(argv.contains("EPIJ_Qual=303"))
+    }
+
+    func testCapturedQualityCaseInsensitiveDedup() throws {
+        let argv = try build(
+            options: PrintOptions(
+                quality: "303",
+                cupsOptions: "epij_qual=308"),
+            optionKeys: ["EPIJ_Qual"])
+        XCTAssertFalse(argv.contains("EPIJ_Qual=303"))
+        XCTAssertTrue(argv.contains("epij_qual=308"))
+    }
+
+    func testQualityNilNoEmit() throws {
+        let argv = try build(
+            options: PrintOptions(mediaType: "Photo"),
+            optionKeys: ["EPIJ_Qual", "MediaType"])
+        XCTAssertFalse(argv.contains { $0.hasPrefix("EPIJ_Qual=") })
+        // No quality key on the queue → no emit either.
+        let noKey = try build(
+            options: PrintOptions(quality: "303"),
+            optionKeys: ["MediaType"])
+        XCTAssertFalse(noKey.contains { $0.hasPrefix("EPIJ_Qual=") })
+    }
+
     func testSanitise() throws {
         XCTAssertThrowsError(try build(options: PrintOptions(
             cupsOptions: "InputSlot=Rear;rm -rf /"))) { error in

Tests/ICCeryCoreTests/PrintPanelTests.swift

@@ -52,6 +52,23 @@ final class PrintPanelStubTests: XCTestCase {
         }
     }
 
+    /// #183 — the stub parses paper size / quality / orientation out of
+    /// `ICCERY_TEST_PANEL_OPTIONS` so UI tests can verify apply-back.
+    func testOkResultExtractsNewFields() throws {
+        try withEnv([
+            "ICCERY_UI_TESTING": "1",
+            "ICCERY_TEST_PRINT_PANEL": "ok",
+            "ICCERY_TEST_PANEL_OPTIONS":
+                "PageSize=Letter EPIJ_Qual=305 orientation-requested=4",
+            "ICCERY_TEST_PANEL_PRINTER": nil,
+        ]) {
+            let result = UITestHooks.printPanelResult(forQueue: "q")
+            XCTAssertEqual(result?.options.paperSize, "Letter")
+            XCTAssertEqual(result?.options.quality, "305")
+            XCTAssertEqual(result?.options.orientation, "landscape")
+        }
+    }
+
     func testOkDefaultsPrinter() throws {
         try withEnv([
             "ICCERY_UI_TESTING": "1",

Tests/ICCeryCoreTests/PrintSessionViewModelTests.swift

@@ -0,0 +1,247 @@
+import Foundation
+import XCTest
+@testable import ICCeryCore
+@testable import ICCery
+
+/// Issue #183 — Stage 2 paper-size / quality selection: seeding from
+/// Stage 1 `pageSize`, the synthetic `Custom.<pt>x<pt>` entry, re-mirror
+/// triggers, and `PrintOptions` wiring into `lp` argv.
+/// `lpoptions`/`lp` are mock scripts in the test env's `cups-bin` — no
+/// live CUPS is touched.
+@MainActor
+final class PrintSessionViewModelTests: XCTestCase {
+
+    private var env: TestAppEnvironment!
+    private var lpArgvURL: URL!
+
+    override func setUp() async throws {
+        env = try TestAppEnvironment.make()
+        lpArgvURL = env.root.appendingPathComponent("lp-argv.log")
+        try writeCupsFixtures()
+    }
+
+    override func tearDown() async throws {
+        env?.cleanup()
+        env = nil
+        lpArgvURL = nil
+    }
+
+    private var binDir: URL {
+        env.root.appendingPathComponent("cups-bin")
+    }
+
+    /// Mock `lpoptions -l` advertises paper sizes + a quality key;
+    /// mock `lp` appends its argv to `lpArgvURL` for assertions.
+    private func writeCupsFixtures() throws {
+        try FileManager.default.createDirectory(
+            at: binDir, withIntermediateDirectories: true)
+        let lpoptions = """
+            #!/bin/sh
+            list=0
+            queue=""
+            for arg in "$@"; do
+              case "$arg" in
+                -l) list=1 ;;
+                -*) ;;
+                *) queue="$arg" ;;
+              esac
+            done
+            if [ "$list" = "1" ]; then
+              printf 'PageSize/Media Size: 4x6 5x7 *A4 Letter Legal Custom.WIDTHxHEIGHT\\n'
+              printf 'InputSlot/Media Source: Auto *Main Rear\\n'
+              printf 'MediaType/Media Type: *Stationery Glossy Matte\\n'
+              printf 'EPIJ_Qual/Print Quality: 301 302 *303 308 304 305 307\\n'
+              exit 0
+            fi
+            printf "printer-info='Mock %s' printer-type=42\\n" "$queue"
+            exit 0
+            """
+        let lp = """
+            #!/bin/sh
+            printf '%s\\n' "$*" >> "\(lpArgvURL.path)"
+            exit 0
+            """
+        for (name, body) in [("lpoptions", lpoptions), ("lp", lp)] {
+            let url = binDir.appendingPathComponent(name)
+            try body.write(to: url, atomically: true, encoding: .utf8)
+            try FileManager.default.setAttributes(
+                [.posixPermissions: 0o755], ofItemAtPath: url.path)
+        }
+    }
+
+    private func makeWorkflow() -> TargetWorkflowViewModel {
+        TargetWorkflowViewModel(environment: env.environment)
+    }
+
+    private func loadCaps(
+        _ vm: PrintSessionViewModel, queue: String = "Mock_Q"
+    ) async {
+        vm.selectedPrinter = queue
+        await vm.reloadSelectedCapabilities()
+    }
+
+    private func waitForFile(
+        _ url: URL, timeout: TimeInterval = 10
+    ) async -> String {
+        let deadline = Date().addingTimeInterval(timeout)
+        while Date() < deadline {
+            if let text = try? String(contentsOf: url, encoding: .utf8),
+               !text.isEmpty {
+                return text
+            }
+            try? await Task.sleep(nanoseconds: 100_000_000)
+        }
+        return (try? String(contentsOf: url, encoding: .utf8)) ?? ""
+    }
+
+    // MARK: - Seeding / mirror
+
+    /// `pageSize = .a4` matches the capability named "A4" → its id.
+    func testSeedMatchesPageSizeRawValue() async {
+        let workflow = makeWorkflow()
+        workflow.pageSize = .a4
+        await loadCaps(workflow.print)
+
+        XCTAssertEqual(workflow.pageSize, .a4)
+        XCTAssertEqual(workflow.print.selectedPaperSize, 3)
+        // Quality seeds from the `*` default on caps load.
+        XCTAssertEqual(workflow.print.selectedQuality, "303")
+        // All seven Epson codes enumerate in driver order (#180).
+        XCTAssertEqual(workflow.print.printerCaps.qualities.map(\.id),
+            ["301", "302", "303", "308", "304", "305", "307"])
+    }
+
+    /// `.custom` → synthetic `id: 0` entry whose token is the
+    /// dimensions in **points** (mm × 72/25.4): 210×297 → `Custom.595x842`.
+    func testSeedCustomPageSizeSyntheticEntry() async {
+        let workflow = makeWorkflow()
+        workflow.pageSize = .custom
+        workflow.customPageW = 210
+        workflow.customPageH = 297
+        await loadCaps(workflow.print)
+
+        XCTAssertEqual(workflow.print.selectedPaperSize, 0)
+        let synthetic = workflow.print.printerCaps.paperSizes
+            .first { $0.id == 0 }
+        XCTAssertEqual(synthetic?.name, "Custom.595x842")
+        XCTAssertEqual(workflow.print.selectedPaperSizeToken, "Custom.595x842")
+    }
+
+    /// A `workflow.pageSize` change re-mirrors the picker.
+    func testReseedOnPageSizeChange() async {
+        let workflow = makeWorkflow()
+        workflow.pageSize = .a4
+        await loadCaps(workflow.print)
+        XCTAssertEqual(workflow.print.selectedPaperSize, 3)
+
+        workflow.pageSize = .letter
+        workflow.print.seedPaperSelection()
+        XCTAssertEqual(workflow.print.selectedPaperSize, 4)
+    }
+
+    /// A user pick survives unrelated publishes — re-seed only fires
+    /// on pageSize / printer / caps triggers (#183, R14).
+    func testUserEditPreservedAcrossUnrelatedPublishes() async {
+        let workflow = makeWorkflow()
+        workflow.pageSize = .a4
+        await loadCaps(workflow.print)
+        workflow.print.selectedPaperSize = 5
+
+        workflow.print.selectedTray = 2
+        workflow.print.printOrientation = "landscape"
+        workflow.print.printNotice = Notice(kind: .info, text: "x")
+
+        XCTAssertEqual(workflow.print.selectedPaperSize, 5)
+    }
+
+    /// A printer change re-seeds from `workflow.pageSize` after the
+    /// capabilities reload (the picker re-mirrors, not guesses).
+    func testPrinterChangeReseeds() async {
+        let workflow = makeWorkflow()
+        workflow.pageSize = .a4
+        await loadCaps(workflow.print)
+        workflow.print.selectedPaperSize = 5
+        workflow.print.selectedQuality = "301"
+
+        // The view nils quality on printer change before reloading —
+        // the VM re-seeds `when nil` only (#183 contract).
+        workflow.print.selectedPrinter = "Other_Q"
+        workflow.print.selectedQuality = nil
+        await workflow.print.reloadSelectedCapabilities()
+
+        XCTAssertEqual(workflow.print.selectedPaperSize, 3)
+        XCTAssertEqual(workflow.print.selectedQuality, "303")
+    }
+
+    /// A pageSize with no capability match leaves the pick nil —
+    /// never a guessed id.
+    func testSeedNoMatchLeavesNil() async {
+        let workflow = makeWorkflow()
+        workflow.pageSize = .a2
+        await loadCaps(workflow.print)
+        XCTAssertNil(workflow.print.selectedPaperSize)
+        XCTAssertNil(workflow.print.selectedPaperSizeToken)
+    }
+
+    // MARK: - Spool wiring
+
+    /// `spool` emits the Stage 2 paper token and quality through
+    /// `PrintOptions` → `lp` argv (`-o PageSize=`, `-o <qualityKey>=`).
+    func testSpoolPassesPaperTokenAndQuality() async throws {
+        let workflow = makeWorkflow()
+        workflow.pageSize = .a4
+        await loadCaps(workflow.print)
+        workflow.print.selectedPaperSize = 4 // Letter
+        workflow.print.selectedQuality = "301"
+
+        let tiff = env.root.appendingPathComponent("page1.tif")
+        try Data([0x49, 0x49]).write(to: tiff)
+        let page = GalleryPage(
+            index: 0,
+            page: PrinttargPage(
+                filename: "page1.tif", patches: 10,
+                widthMm: 210, heightMm: 297),
+            fileURL: tiff, previewPNG: nil, previewError: nil)
+        let result = PrinttargResult(
+            ti2URL: env.root.appendingPathComponent("target.ti2"),
+            manifest: PrinttargManifest(pages: [page.page]),
+            pages: [page])
+        workflow.print.printAllPages(from: result)
+
+        let argv = await waitForFile(lpArgvURL)
+        XCTAssertTrue(argv.contains("PageSize=Letter"), argv)
+        XCTAssertTrue(argv.contains("EPIJ_Qual=301"), argv)
+    }
+
+    // MARK: - Panel apply-back (stubbed NSPrintPanel)
+
+    /// The stubbed panel's captured `PageSize=`/`EPIJ_Qual=` apply back
+    /// to `selectedPaperSize`/`selectedQuality` (#183 capture-return).
+    func testPanelResultAppliesBackSelections() async throws {
+        setenv("ICCERY_UI_TESTING", "1", 1)
+        setenv("ICCERY_TEST_PRINT_PANEL", "ok", 1)
+        setenv("ICCERY_TEST_PANEL_OPTIONS",
+               "PageSize=Letter EPIJ_Qual=305", 1)
+        defer {
+            unsetenv("ICCERY_UI_TESTING")
+            unsetenv("ICCERY_TEST_PRINT_PANEL")
+            unsetenv("ICCERY_TEST_PANEL_OPTIONS")
+        }
+
+        let workflow = makeWorkflow()
+        workflow.pageSize = .a4
+        await loadCaps(workflow.print)
+        XCTAssertEqual(workflow.print.selectedPaperSize, 3)
+        XCTAssertEqual(workflow.print.selectedQuality, "303")
+
+        workflow.print.openPrinterPreferences()
+        let deadline = Date().addingTimeInterval(10)
+        while Date() < deadline,
+              workflow.print.selectedPaperSize != 4
+              || workflow.print.selectedQuality != "305" {
+            try? await Task.sleep(nanoseconds: 100_000_000)
+        }
+        XCTAssertEqual(workflow.print.selectedPaperSize, 4)
+        XCTAssertEqual(workflow.print.selectedQuality, "305")
+    }
+}

Tests/ICCeryUITests/Fixtures/bin/lpoptions

@@ -1,6 +1,8 @@
 #!/bin/sh
 # Mock lpoptions for Milestone3UITests. `-p <q>` prints printer-info;
-# `-p <q> -l` prints Key/Label listings incl. Epson bypass keys.
+# `-p <q> -l` prints Key/Label listings incl. Epson bypass keys and the
+# recorded XP-55 EPIJ_Qual line — the driver's own non-sorted order
+# (308 sits between 303 and 304, #180).
 queue=""
 list=0
 for arg in "$@"; do
@@ -15,6 +17,7 @@ if [ "$list" = "1" ]; then
   printf 'PageSize/Media Size: 4x6 5x7 *A4 Letter Legal\n'
   printf 'InputSlot/Media Source: Auto *Main Rear\n'
   printf 'MediaType/Media Type: *Stationery PhotographicGlossy PhotographicMatte\n'
+  printf 'EPIJ_Qual/Print Quality: 301 302 *303 308 304 305 307\n'
   printf 'EPIJ_CMat/Color Adjust: *0 1 2 3\n'
   printf 'ColorModel/Output Mode: *RGB Gray\n'
   exit 0

Tests/ICCeryUITests/Milestone11PrintSettingsUITests.swift

@@ -0,0 +1,195 @@
+import XCTest
+
+/// Milestone 11 UI tests — issue #183 Stage 2 paper size + print
+/// quality pickers. Runs against the same mock CUPS fixture binaries
+/// as `Milestone3UITests`; the `NSPrintPanel` stays stubbed through
+/// `ICCERY_TEST_PRINT_PANEL` (XCUITest cannot drive the system modal).
+@MainActor
+final class Milestone11PrintSettingsUITests: XCTestCase {
+
+    private var app: XCUIApplication!
+    private var testRoot: URL!
+    private var binDir: URL!
+    private var workDir: URL!
+    private var lpArgvURL: URL!
+
+    override func setUp() async throws {
+        continueAfterFailure = false
+        testRoot = FileManager.default.temporaryDirectory
+            .appendingPathComponent("iccery-ui11-\(UUID().uuidString)")
+        binDir = URL(fileURLWithPath: #filePath)
+            .deletingLastPathComponent()
+            .appendingPathComponent("Fixtures/bin")
+        workDir = testRoot.appendingPathComponent("work")
+        lpArgvURL = testRoot.appendingPathComponent("lp-argv.log")
+        try FileManager.default.createDirectory(
+            at: workDir, withIntermediateDirectories: true)
+
+        app = XCUIApplication()
+        app.launchEnvironment = [
+            "ICCERY_UI_TESTING": "1",
+            "ICCERY_TEST_ROOT": testRoot.path,
+            "ICCERY_ARGYLL_BINARY_DIR": binDir.path,
+            "ICCERY_CUPS_BIN_DIR": binDir.path,
+            "ICCERY_TEST_SAVE_TARGET":
+                workDir.appendingPathComponent("mytarget.ti1").path,
+            "ICCERY_TEST_WORKDIR": workDir.path,
+            "ICCERY_TEST_LP_ARGV": lpArgvURL.path,
+        ]
+    }
+
+    override func tearDown() async throws {
+        app?.terminate()
+        app = nil
+        if let testRoot {
+            try? FileManager.default.removeItem(at: testRoot)
+        }
+        testRoot = nil
+    }
+
+    private func element(_ id: String) -> XCUIElement {
+        let inApp = app.descendants(matching: .any)[id]
+        if inApp.exists { return inApp }
+        return app.sheets.firstMatch.descendants(matching: .any)[id]
+    }
+
+    private func waitFor(_ id: String, timeout: TimeInterval = 15) -> XCUIElement {
+        let deadline = Date().addingTimeInterval(timeout)
+        while Date() < deadline {
+            let el = element(id)
+            if el.exists { return el }
+            RunLoop.current.run(until: Date().addingTimeInterval(0.1))
+        }
+        let el = element(id)
+        XCTAssertTrue(el.exists, "Expected element \(id)")
+        return el
+    }
+
+    /// Drive the app through targen + printtarg so the print panel is
+    /// live with a manifest.
+    private func reachPrintPanel() {
+        app.buttons["btnBrowse"].click()
+        app.buttons["btnGenerate"].click()
+        _ = waitFor("btnCreateLayout", timeout: 25)
+        app.buttons["btnCreateLayout"].click()
+        _ = waitFor("galleryPage-0", timeout: 25)
+    }
+
+    private func waitForLpLine(_ timeout: TimeInterval = 10) -> String {
+        let deadline = Date().addingTimeInterval(timeout)
+        while Date() < deadline {
+            let out = (try? String(contentsOf: lpArgvURL, encoding: .utf8)) ?? ""
+            if !out.isEmpty { return out }
+            RunLoop.current.run(until: Date().addingTimeInterval(0.1))
+        }
+        return (try? String(contentsOf: lpArgvURL, encoding: .utf8)) ?? ""
+    }
+
+    // MARK: - Tests
+
+    /// The paper-size and quality pickers exist with their new ids;
+    /// the existing tray / media / orientation ids are unchanged (#183).
+    func testPaperAndQualityPickersExist() throws {
+        launchAppWithDefaults()
+        reachPrintPanel()
+        _ = waitFor("printerStatusBadge")
+
+        XCTAssertTrue(element("printerPaperSizeSelect").exists)
+        XCTAssertTrue(element("printerQualitySelect").exists)
+        XCTAssertTrue(element("paperSizeGroup").exists)
+        XCTAssertTrue(element("qualityGroup").exists)
+
+        // Existing ids untouched. (`mediaTypeGroup` is not asserted —
+        // stacked `.accessibilityIdentifier` modifiers collapse to the
+        // last one, so it never resolved even before this change.)
+        XCTAssertTrue(element("printerSelect").exists)
+        XCTAssertTrue(element("printerTraySelect").exists)
+        XCTAssertTrue(element("printerMediaTypeSelect").exists)
+        XCTAssertTrue(element("btnOrientPortrait").exists)
+        XCTAssertTrue(element("btnOrientLandscape").exists)
+        XCTAssertTrue(element("btnPrinterProperties").exists)
+    }
+
+    /// The displayed selection of a picker — `AXTitle` for a popup
+    /// button, falling back to label/value depending on how AppKit
+    /// exposes the current item.
+    private func selection(of id: String) -> String {
+        let el = element(id)
+        for candidate in [el.title, el.label, el.value as? String ?? ""] {
+            if !candidate.isEmpty, candidate != el.identifier {
+                return candidate
+            }
+        }
+        return el.title
+    }
+
+    /// The paper picker seeds from Stage 1's `pageSize` (A4 default)
+    /// and the quality picker from the driver's `*` default choice.
+    func testPickersSeedFromStage1AndDriverDefault() throws {
+        launchAppWithDefaults()
+        reachPrintPanel()
+        _ = waitFor("printerStatusBadge")
+
+        _ = waitFor("printerPaperSizeSelect")
+        _ = waitFor("printerQualitySelect")
+        XCTAssertEqual(selection(of: "printerPaperSizeSelect"), "A4")
+        XCTAssertEqual(selection(of: "printerQualitySelect"), "303")
+    }
+
+    /// #180 — the quality picker lists all seven Epson `EPIJ_Qual`
+    /// codes in the driver's own order (308 between 303 and 304); no
+    /// PPD is injected under UI testing so items show raw tokens.
+    func testQualityPickerListsAllSevenDriverOptions() throws {
+        launchAppWithDefaults()
+        reachPrintPanel()
+        _ = waitFor("printerStatusBadge")
+
+        let picker = app.popUpButtons["printerQualitySelect"]
+        XCTAssertTrue(picker.waitForExistence(timeout: 10))
+        picker.click()
+
+        let expected = ["301", "302", "303", "308", "304", "305", "307"]
+        for token in expected {
+            XCTAssertTrue(
+                app.menuItems[token].waitForExistence(timeout: 5),
+                "Missing quality menu item \(token)")
+        }
+        let titles = app.menuItems.allElementsBoundByIndex
+            .map(\.title)
+            .filter { expected.contains($0) }
+        XCTAssertEqual(titles, expected)
+
+        app.typeKey(XCUIKeyboardKey.escape, modifierFlags: [])
+    }
+
+    /// The stubbed panel result's captured `PageSize=`/`EPIJ_Qual=`
+    /// apply back into the Stage 2 pickers and reach the `lp` argv
+    /// (R15 — the real modal is never driven).
+    func testPanelResultAppliesBackToPickers() throws {
+        app.launchEnvironment["ICCERY_TEST_PRINT_PANEL"] = "ok"
+        app.launchEnvironment["ICCERY_TEST_PANEL_OPTIONS"] =
+            "PageSize=Letter EPIJ_Qual=305"
+        launchAppWithDefaults()
+        reachPrintPanel()
+        _ = waitFor("printerStatusBadge")
+
+        element("btnPrinterProperties").click()
+        let notice = element("printNotificationText")
+        XCTAssertTrue(notice.waitForExistence(timeout: 10))
+        XCTAssertTrue((notice.value as? String ?? "")
+            .contains("Settings captured"))
+
+        XCTAssertEqual(selection(of: "printerPaperSizeSelect"), "Letter")
+        XCTAssertEqual(selection(of: "printerQualitySelect"), "305")
+
+        app.buttons["btnPrintAll"].click()
+        let argv = waitForLpLine()
+        XCTAssertTrue(argv.contains("PageSize=Letter"), argv)
+        XCTAssertTrue(argv.contains("EPIJ_Qual=305"), argv)
+    }
+
+    private func launchAppWithDefaults() {
+        app.launch()
+        app.activate()
+    }
+}