Point links at the new git host

GitHub went dark with the account suspension on 2026-09-20 and GitLab was
retired on 2026-09-22, so links to either no longer resolve. Repository,
file, release and download links now point at git.coffeylabs.org, images
at registry.coffeylabs.org, and old GitHub issue and pull request links at
coffey-labs/ihasmail-github-archive, whose numbers match GitHub's.

web/src/lib/languages.ts

@@ -49,7 +49,7 @@ export const UI_LANGUAGES: readonly UiLanguage[] = [
 ];
 
 /** Where to report a bad translation. Beta languages depend on it. */
-export const TRANSLATION_ISSUE_URL = "https://github.com/Coffey-Labs/ihasmail/issues/new?title=Translation%3A%20";
+export const TRANSLATION_ISSUE_URL = "https://git.coffeylabs.org/coffey-labs/ihasmail/issues/new?title=Translation%3A%20";
 
 export const DEFAULT_UI_LANGUAGE = "en";
 

web/src/lib/source.ts

@@ -5,4 +5,4 @@
  * source. The server says where its own lives, via SOURCE_URL; this is only the
  * fallback for when it has not been asked yet, or has nothing to say.
  */
-export const DEFAULT_SOURCE_URL = "https://github.com/Coffey-Labs/ihasmail";
+export const DEFAULT_SOURCE_URL = "https://git.coffeylabs.org/coffey-labs/ihasmail";

web/src/store/calendar.ts

@@ -108,7 +108,7 @@ export function isOccurrence(event: CalendarEvent): boolean {
  * before it is sent — rejected properties throw, inherited ones are reported to
  * the caller — rather than being posted hopefully and believed.
  *
- * [#26]: https://github.com/Coffey-Labs/ihasmail/issues/26
+ * [#26]: https://git.coffeylabs.org/coffey-labs/ihasmail-github-archive/issues/26
  */
 const OCCURRENCE_REJECTED = new Set([
   "baseEventId", "calendarIds", "isDraft", "isOrigin", "utcStart", "utcEnd",

web/src/store/contacts.ts

@@ -26,7 +26,7 @@ import { useMail } from "./mail";
  * `ContactCard/set` down they are the same" was always claiming and is now
  * true of.
  *
- * [#173]: https://github.com/Coffey-Labs/ihasmail/issues/173
+ * [#173]: https://git.coffeylabs.org/coffey-labs/ihasmail-github-archive/issues/173
  */
 /**
  * The UIDs an address book already holds.

web/src/ui/dialog.tsx

@@ -101,7 +101,7 @@ export interface DialogChoice {
    * which is what "Discard changes" was, on a guard whose whole purpose is to
    * stop you losing work ([#175]).
    *
-   * [#175]: https://github.com/Coffey-Labs/ihasmail/issues/175
+   * [#175]: https://git.coffeylabs.org/coffey-labs/ihasmail-github-archive/issues/175
    */
   primary?: boolean;
 }