Add text file link import with preview and selection

[Copilot]

Implements import of links from text files with a preview screen allowing users to review and select links before importing.

Changes

TextFileImporter

• Parses comma-separated or newline-separated links from text files
• Intelligently detects format (>50% threshold) to avoid splitting URLs with commas in query parameters
• Provides parseForPreview() for validation and importSelected() for batch import
• Validates links via isValidDeeplink() and checks for duplicates against existing database entries

ImportPreviewScreen

• Displays parsed links with checkboxes, validation status, and duplicate indicators
• Pre-selects valid non-duplicate links by default
• Includes Select All/Deselect All actions
• Visual indicators: error border for invalid links, tertiary border for duplicates

Integration

• Added to ImportRepositoryImpl available importers
• Special handling in RestoreScreen routes to preview flow (vs direct import for other formats)
• Navigation entry in MainActivity for ImportPreviewScreen
• Koin DI registration for TextFileImporter

Example Usage

Comma-separated:

https://github.com, https://google.com, https://stackoverflow.com

Newline-separated:

https://github.com
https://google.com
https://stackoverflow.com

URLs with query params (correctly handled as newline-separated):

https://example.com?tags=a,b,c
https://google.com?items=x,y,z

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 --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.invoke=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED --add-exports=jdk.compiler/com.sun.tools.javac.util=ALL-UNNAMED --add-opens=java.base/java.util=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 --add-opens=java.xml/javax.xml.namespace=ALL-UNNAMED -Xmx2048m -Dfile.encoding=UTF-8 -Duser.country -Duser.language=en -Duser.variant -cp /home/REDACTED/.gradle/wrapper/dists/gradle-8.13-bin/5xuhj0ry160q40clulazy9h7d/gradle-8.13/lib/gradle-daemon-main-8.13.jar -javaagent:/home/REDACTED/.gradle/wrapper/dists/gradle-8.13-bin/5xuhj0ry160q40clulazy9h7d/gradle-8.13/lib/agents/gradle-instrumentation-agent-8.13.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 8.13 (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

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This section details on the original issue you should resolve

<issue_title>Import Links from text file</issue_title>
<issue_description>Import links from text file, find valid links from text file and show a list with checkbox to review the links which they want to import and on import button import all the links for which the checkbox is enabled, by default all checkbox will be enabled.

The text file can be comma seperated links as well as line break links.</issue_description>

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

• Fixes Import Links from text file #63

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