Sync bundled man page catalog from man.sr.ht (#7)

The More tab's official man-page list was a hardcoded array, updated by
hand. Move it to a checked-in Hutch/Resources/man-pages.json (bundled via
the synchronized group) loaded by a new ManPageCatalog, with the previous
list kept as a built-in fallback.

Add scripts/sync_man_pages.py, which re-derives the catalog from the
man.sr.ht landing page, and a weekly scheduled workflow that runs it and
opens a pull request when the list diverges upstream. The script refuses to
write a suspiciously short list so a markup change can't gut the catalog.

This first sync also picks up chat.sr.ht, which upstream added since the
list was last hand-edited. Tests cover catalog loading, the fallback, and
JSON decoding.

2 files changed, 47 insertions, 15 deletions

diff --git a/Hutch/Views/More/ManPageBrowserView.swift b/Hutch/Views/More/ManPageBrowserView.swift
index c22eafe..575b3ae 100644
--- a/Hutch/Views/More/ManPageBrowserView.swift
+++ b/Hutch/Views/More/ManPageBrowserView.swift
@@ -1,26 +1,15 @@
 import SwiftUI
 
 /// Entry point for the man.sr.ht browser in the More tab.
-/// Shows a pre-populated list of official sr.ht man pages.
+/// Shows the official sr.ht man pages from the bundled catalog, which the
+/// scheduled sync workflow keeps current with man.sr.ht.
 struct ManPageBrowserView: View {
-    private let officialDocs: [(title: String, url: URL)] = [
-        ("sr.ht", URL(string: "https://man.sr.ht/sr.ht/")!),
-        ("hub.sr.ht", URL(string: "https://man.sr.ht/hub.sr.ht/")!),
-        ("git.sr.ht", URL(string: "https://man.sr.ht/git.sr.ht/")!),
-        ("hg.sr.ht", URL(string: "https://man.sr.ht/hg.sr.ht/")!),
-        ("lists.sr.ht", URL(string: "https://man.sr.ht/lists.sr.ht/")!),
-        ("todo.sr.ht", URL(string: "https://man.sr.ht/todo.sr.ht/")!),
-        ("builds.sr.ht", URL(string: "https://man.sr.ht/builds.sr.ht/")!),
-        ("paste.sr.ht", URL(string: "https://man.sr.ht/paste.sr.ht/")!),
-        ("man.sr.ht", URL(string: "https://man.sr.ht/man.sr.ht/")!),
-        ("meta.sr.ht", URL(string: "https://man.sr.ht/meta.sr.ht/")!),
-        ("srht.site", URL(string: "https://srht.site/")!)
-    ]
+    private let officialDocs = ManPageCatalog.load()
 
     var body: some View {
         List {
             Section("Official Man Pages") {
-                ForEach(officialDocs, id: \.title) { doc in
+                ForEach(officialDocs) { doc in
                     NavigationLink(value: MoreRoute.manPage(doc.url)) {
                         Text(doc.title)
                     }
diff --git a/Hutch/Views/More/ManPageCatalog.swift b/Hutch/Views/More/ManPageCatalog.swift
new file mode 100644
index 0000000..faff0c5
--- /dev/null
+++ b/Hutch/Views/More/ManPageCatalog.swift
@@ -0,0 +1,43 @@
+import Foundation
+
+struct ManPageCatalogEntry: Decodable, Hashable, Identifiable {
+    let title: String
+    let url: URL
+
+    var id: String { title }
+}
+
+enum ManPageCatalog {
+    /// Official sr.ht man pages, loaded from the bundled `man-pages.json` that
+    /// the scheduled sync workflow keeps in step with man.sr.ht. Falls back to a
+    /// built-in list if the resource is missing or unreadable, so the browser is
+    /// never empty.
+    static func load(bundle: Bundle = .main) -> [ManPageCatalogEntry] {
+        guard let url = bundle.url(forResource: "man-pages", withExtension: "json"),
+              let data = try? Data(contentsOf: url),
+              let entries = try? JSONDecoder().decode([ManPageCatalogEntry].self, from: data),
+              !entries.isEmpty else {
+            return fallback
+        }
+        return entries
+    }
+
+    static let fallback: [ManPageCatalogEntry] = [
+        entry("builds.sr.ht", "https://man.sr.ht/builds.sr.ht/"),
+        entry("chat.sr.ht", "https://man.sr.ht/chat.sr.ht/"),
+        entry("git.sr.ht", "https://man.sr.ht/git.sr.ht/"),
+        entry("hg.sr.ht", "https://man.sr.ht/hg.sr.ht/"),
+        entry("hub.sr.ht", "https://man.sr.ht/hub.sr.ht/"),
+        entry("lists.sr.ht", "https://man.sr.ht/lists.sr.ht/"),
+        entry("man.sr.ht", "https://man.sr.ht/man.sr.ht/"),
+        entry("meta.sr.ht", "https://man.sr.ht/meta.sr.ht/"),
+        entry("paste.sr.ht", "https://man.sr.ht/paste.sr.ht/"),
+        entry("sr.ht", "https://man.sr.ht/sr.ht/"),
+        entry("srht.site", "https://srht.site/"),
+        entry("todo.sr.ht", "https://man.sr.ht/todo.sr.ht/")
+    ]
+
+    private static func entry(_ title: String, _ urlString: String) -> ManPageCatalogEntry {
+        ManPageCatalogEntry(title: title, url: URL(string: urlString)!)
+    }
+}