Make duration optional for ongoing medications

[Copilot]

Users taking medication indefinitely had no way to skip adding an end date. The date picker would crash when trying to set far-future dates like 2100.

Changes

Data Layer

• Made endDate nullable in Medication domain model and MedicationEntity
• Added Room auto-migration v4→v5 for schema change

UI

• Added "Ongoing (no end date)" checkbox with proper accessibility (toggleable + Role.Checkbox)
• Shows single date picker for start date when ongoing is selected, date range picker otherwise
• New StartDatePickerDialog component

ViewModel

• For ongoing medications, creates 1 year of reminders initially (extendable in future)
• endDate stored as null in database for ongoing medications

Confirmation Screen

• Displays "ongoing" instead of end date for ongoing medications
• Added all_set_ongoing plural string resource

// Medication model now supports nullable endDate
data class Medication(
    ...
    val endDate: Date?,  // null = ongoing medication
    ...
)

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dl.google.com
  • Triggering command: /usr/lib/jvm/temurin-17-jdk-amd64/bin/java /usr/lib/jvm/temurin-17-jdk-amd64/bin/java --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-opens=java.base/java.nio.charset=ALL-UNNAMED --add-opens=java.base/java.net=ALL-UNNAMED --add-opens=java.base/java.util.concurrent.atomic=ALL-UNNAMED -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp /home/REDACTED/.gradle/wrapper/dists/gradle-8.7-bin/bhs2wmbdwecv87pi65oeuq5iu/gradle-8.7/lib/gradle-launcher-8.7.jar -javaagent:/home/REDACTED/.gradle/wrapper/dists/gradle-8.7-bin/bhs2wmbdwecv87pi65oeuq5iu/gradle-8.7/lib/agents/gradle-instrumentation-agent-8.7.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.7 (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Make duration optional</issue_title>
<issue_description>For medicine I need to take for life, there's no easy solution to skip adding a duration. If I try to enter a future date, it states the latest year I can set is 2100 but then the app crashes and won't let me click "confirm" to add it

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Make duration optional #174

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