fix: centralize URLs, tighten models, and polish SwiftUI bindingsv3.1.3

- Add shared HutchDeepLinkURL constants for app, widgets, and tests.
- Bump marketing version to 3.1.2 and build to 70 (app + widget extension).
- Point Hutch stats default base URL at HutchStatsAPI; add SRHTWebURL status
  incident feed and reuse it from SystemStatusService.
- Group Project into Metadata and Resources; split ContributionStatsResponse
  into StatsWindow and StatsTotals with updated decoding and tests.
- Replace @Bindable usage with explicit Bindings in Profile, Projects list,
  and repository ACL flows; simplify Home pinned-item helper; add no-op
  bodies on cancel alert buttons where the compiler requires a statement.
- Move repository row build-status indicator next to the relative-updated
  caption and reserve a fixed 8×8 slot so the row does not jump when status
  loads.
- Use NSString.lastPathComponent for build artifact filenames; collapse
  duplicate ACL error branches; minor HutchStats HTTP and XMLParserDelegate
  cleanups.
- Point widgets at HutchDeepLinkURL helpers; align tests with the new
  response and URL types.

3 files changed, 88 insertions, 61 deletions

diff --git a/Hutch/Models/Builds.swift b/Hutch/Models/Builds.swift
index d666398..3926888 100644
--- a/Hutch/Models/Builds.swift
+++ b/Hutch/Models/Builds.swift
@@ -136,8 +136,7 @@ struct BuildArtifact: Codable, Sendable, Identifiable, Equatable {
     let url: URL?
 
     var filename: String {
-        let pathComponents = path.split(separator: "/")
-        return pathComponents.last.map(String.init) ?? path
+        (path as NSString).lastPathComponent
     }
 
     var isDownloadable: Bool {
diff --git a/Hutch/Models/ContributionCalendar.swift b/Hutch/Models/ContributionCalendar.swift
index e2942dd..a429fa2 100644
--- a/Hutch/Models/ContributionCalendar.swift
+++ b/Hutch/Models/ContributionCalendar.swift
@@ -117,45 +117,67 @@ struct ContributionStatsResponse: Decodable, Sendable, Hashable {
         case currentStreak = "current_streak"
     }
 
-    init(
-        actor: String,
-        from: Date,
-        to: Date,
-        isIndexed: Bool,
-        lastPolledAt: Date?,
-        indexingState: ContributionIndexingState,
-        totalEvents: Int,
-        totalScore: Double,
-        activeDays: Int,
-        longestStreak: Int,
-        currentStreak: Int
-    ) {
-        self.actor = actor
-        self.from = from
-        self.to = to
-        self.isIndexed = isIndexed
-        self.lastPolledAt = lastPolledAt
-        self.indexingState = indexingState
-        self.totalEvents = totalEvents
-        self.totalScore = totalScore
-        self.activeDays = activeDays
-        self.longestStreak = longestStreak
-        self.currentStreak = currentStreak
+    struct StatsWindow: Sendable, Hashable {
+        let actor: String
+        let from: Date
+        let to: Date
+        let isIndexed: Bool
+        let lastPolledAt: Date?
+        let indexingState: ContributionIndexingState
+    }
+
+    struct StatsTotals: Sendable, Hashable {
+        let totalEvents: Int
+        let totalScore: Double
+        let activeDays: Int
+        let longestStreak: Int
+        let currentStreak: Int
+    }
+
+    init(window: StatsWindow, totals: StatsTotals) {
+        actor = window.actor
+        from = window.from
+        to = window.to
+        isIndexed = window.isIndexed
+        lastPolledAt = window.lastPolledAt
+        indexingState = window.indexingState
+        totalEvents = totals.totalEvents
+        totalScore = totals.totalScore
+        activeDays = totals.activeDays
+        longestStreak = totals.longestStreak
+        currentStreak = totals.currentStreak
     }
 
     init(from decoder: any Decoder) throws {
         let container = try decoder.container(keyedBy: CodingKeys.self)
-        actor = try container.decode(String.self, forKey: .actor)
-        from = try ContributionDateParser.decodeDateString(from: container, forKey: .from)
-        to = try ContributionDateParser.decodeDateString(from: container, forKey: .to)
-        isIndexed = try container.decodeIfPresent(Bool.self, forKey: .isIndexed) ?? false
-        lastPolledAt = try ContributionDateParser.decodeOptionalTimestamp(from: container, forKey: .lastPolledAt)
-        indexingState = try container.decodeIfPresent(ContributionIndexingState.self, forKey: .indexingState) ?? .indexed
-        totalEvents = try container.decode(Int.self, forKey: .totalEvents)
-        totalScore = try container.decode(Double.self, forKey: .totalScore)
-        activeDays = try container.decode(Int.self, forKey: .activeDays)
-        longestStreak = try container.decode(Int.self, forKey: .longestStreak)
-        currentStreak = try container.decode(Int.self, forKey: .currentStreak)
+        let actor = try container.decode(String.self, forKey: .actor)
+        let from = try ContributionDateParser.decodeDateString(from: container, forKey: .from)
+        let to = try ContributionDateParser.decodeDateString(from: container, forKey: .to)
+        let isIndexed = try container.decodeIfPresent(Bool.self, forKey: .isIndexed) ?? false
+        let lastPolledAt = try ContributionDateParser.decodeOptionalTimestamp(from: container, forKey: .lastPolledAt)
+        let indexingState = try container.decodeIfPresent(ContributionIndexingState.self, forKey: .indexingState) ?? .indexed
+        let totalEvents = try container.decode(Int.self, forKey: .totalEvents)
+        let totalScore = try container.decode(Double.self, forKey: .totalScore)
+        let activeDays = try container.decode(Int.self, forKey: .activeDays)
+        let longestStreak = try container.decode(Int.self, forKey: .longestStreak)
+        let currentStreak = try container.decode(Int.self, forKey: .currentStreak)
+        self.init(
+            window: .init(
+                actor: actor,
+                from: from,
+                to: to,
+                isIndexed: isIndexed,
+                lastPolledAt: lastPolledAt,
+                indexingState: indexingState
+            ),
+            totals: .init(
+                totalEvents: totalEvents,
+                totalScore: totalScore,
+                activeDays: activeDays,
+                longestStreak: longestStreak,
+                currentStreak: currentStreak
+            )
+        )
     }
 }
 
diff --git a/Hutch/Models/Project.swift b/Hutch/Models/Project.swift
index 678d52e..bbca7d6 100644
--- a/Hutch/Models/Project.swift
+++ b/Hutch/Models/Project.swift
@@ -71,30 +71,36 @@ struct Project: Identifiable, Hashable, Sendable {
     let trackers: [Tracker]
     let isFullyLoaded: Bool
 
-    init(
-        id: String,
-        name: String,
-        description: String?,
-        website: String?,
-        visibility: Visibility,
-        tags: [String],
-        updated: Date,
-        mailingLists: [MailingList],
-        sources: [SourceRepo],
-        trackers: [Tracker],
-        isFullyLoaded: Bool = true
-    ) {
-        self.id = id
-        self.name = name
-        self.description = description
-        self.website = website
-        self.visibility = visibility
-        self.tags = tags
-        self.updated = updated
-        self.mailingLists = mailingLists
-        self.sources = sources
-        self.trackers = trackers
-        self.isFullyLoaded = isFullyLoaded
+    /// Identity and display fields for a project.
+    struct Metadata: Sendable, Hashable {
+        let id: String
+        let name: String
+        let description: String?
+        let website: String?
+        let visibility: Visibility
+        let tags: [String]
+        let updated: Date
+    }
+
+    struct Resources: Sendable, Hashable {
+        let mailingLists: [MailingList]
+        let sources: [SourceRepo]
+        let trackers: [Tracker]
+        let isFullyLoaded: Bool
+    }
+
+    init(metadata: Metadata, resources: Resources) {
+        id = metadata.id
+        name = metadata.name
+        description = metadata.description
+        website = metadata.website
+        visibility = metadata.visibility
+        tags = metadata.tags
+        updated = metadata.updated
+        mailingLists = resources.mailingLists
+        sources = resources.sources
+        trackers = resources.trackers
+        isFullyLoaded = resources.isFullyLoaded
     }
 
     var resourceSummary: String? {