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-de/strings.xml

@@ -283,7 +283,7 @@
     <string name="settings_about_version">Version %1$s</string>
     <string name="settings_about_logo_desc">Calendula-App-Symbol</string>
     <string name="settings_report_problem">Problem melden</string>
-    <string name="settings_report_problem_hint">Absturzbericht oder Feedback per E-Mail senden</string>
+    <string name="settings_report_problem_hint">Absturzbericht senden oder Issue-Tracker öffnen</string>
 
     <!-- Calendar manager -->
     <string name="calendars_title">Kalender</string>
@@ -347,9 +347,8 @@
     <string name="crash_dialog_dismiss">Nicht jetzt</string>
     <string name="crash_report_issue_title">Absturzbericht</string>
     <string name="crash_report_clip_label">Calendula-Absturzbericht</string>
-    <string name="crash_report_copied">Bericht kopiert — E-Mail-App wird geöffnet</string>
-    <string name="crash_report_open_failed">Keine E-Mail-App gefunden. Der Bericht ist in deiner Zwischenablage.</string>
+    <string name="crash_report_copied">Bericht in die Zwischenablage kopiert</string>
+    <string name="crash_report_open_failed">Der Issue-Tracker konnte nicht geöffnet werden. Der Bericht ist in deiner Zwischenablage.</string>
     <string name="crash_report_body_template">Danke, dass du einen Absturz in Calendula meldest. Bitte ergänze, was du gerade getan hast, und sende dann ab.\n\n### Was ist passiert\n\n\n### Absturzbericht\n%1$s\n</string>
-    <string name="report_issue_subject">Calendula — Problemmeldung</string>
-    <string name="report_issue_body_template">Bitte beschreibe das aufgetretene Problem und was du gerade getan hast.\n\n</string>
+    <string name="crash_report_body_paste">_(Der Bericht war zu lang für diesen Link — füge ihn aus deiner Zwischenablage hier ein.)_</string>
 </resources>

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

@@ -280,7 +280,7 @@
     <string name="settings_about_version">Version %1$s</string>
     <string name="settings_about_logo_desc">Calendula app icon</string>
     <string name="settings_report_problem">Report a problem</string>
-    <string name="settings_report_problem_hint">Send a crash report or feedback by email</string>
+    <string name="settings_report_problem_hint">Send a crash report or open the issue tracker</string>
 
     <!-- Calendar manager -->
     <string name="calendars_title">Calendars</string>
@@ -351,10 +351,10 @@
     <string name="crash_dialog_dismiss">Not now</string>
     <string name="crash_report_issue_title">Crash report</string>
     <string name="crash_report_clip_label">Calendula crash report</string>
-    <string name="crash_report_copied">Report copied — opening your email app</string>
-    <string name="crash_report_open_failed">No email app found. 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 send.\n\n### What happened\n\n\n### Crash report\n%1$s\n</string>
-    <string name="report_issue_email" translatable="false">mail@jeanlucmakiola.de</string>
-    <string name="report_issue_subject">Calendula — problem report</string>
-    <string name="report_issue_body_template">Please describe the problem you ran into, and what you were doing when it happened.\n\n</string>
+    <string name="crash_report_copied">Report copied to your clipboard</string>
+    <string name="crash_report_open_failed">Couldn\'t open the issue tracker. The report is on your clipboard.</string>
+    <string name="crash_report_body_template">Thanks for reporting a crash in Calendula. Please add anything you remember about what you were doing, then submit.\n\n### What happened\n\n\n### Crash report\n%1$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://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>