feat(crash): file reports via the public Codeberg tracker instead of email

Now that a public, writable issue tracker exists (the Codeberg mirror at
codeberg.org/jlmakiola/calendula, which the Gitea issue tab links to),
revert the email hand-off (6150ce6) back to the in-app issue-creation flow:
the crash path opens a prefilled issues/new page (with clipboard copy as the
long-report fallback) and the manual "Report a problem" path opens the issue
template chooser.

The email pivot existed only because the personal Gitea has no public issue
creation (reporters hit a login wall). Codeberg lets anyone register and
file, so that reason is gone. Still no INTERNET permission — the user submits
via the browser themselves. URLs point at Codeberg directly so the prefilled
title/body survive (a Gitea external-tracker redirect wouldn't carry query
params).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src/main/res/values/strings.xml

@@ -355,6 +355,6 @@
     <string name="crash_report_open_failed">Couldn\'t open the issue tracker. The report is on your clipboard.</string>
     <string name="crash_report_body_template">Thanks for reporting a crash in Calendula. Please add anything you remember about what you were doing, then submit.\n\n### What happened\n\n\n### Crash report\n%1$s\n</string>
     <string name="crash_report_body_paste">_(The report was too long for this link — paste it from your clipboard here.)_</string>
-    <string name="report_issue_url" translatable="false">https://gitea.jeanlucmakiola.de/makiolaj/calendula/issues/new</string>
-    <string name="report_issue_choose_url" translatable="false">https://gitea.jeanlucmakiola.de/makiolaj/calendula/issues/new/choose</string>
+    <string name="report_issue_url" translatable="false">https://codeberg.org/jlmakiola/calendula/issues/new</string>
+    <string name="report_issue_choose_url" translatable="false">https://codeberg.org/jlmakiola/calendula/issues/new/choose</string>
 </resources>