[BarMal]

$(cat <<'EOF'

Summary

• Adds AppCategory data class with stable encode/decode for persistence in LauncherSettings
• 8 default seeds: communications, finance, shopping, media, productivity, system, customisation, games
• custom() factory normalises free-text titles into slug IDs (& → and, non-alphanumeric → -)
• Escape-aware |-delimited serialisation handles titles containing the separator
• decodeList / encodeList deduplicate by ID and fall back to defaults on blank/corrupt input
• Full unit test coverage in AppCategoryTest

Closes #323 (model foundation — UI and assignment work to follow in subsequent slices)

Test plan

• ./gradlew :app:testDebugUnitTest passes
• Default category seeds present (communications, finance, shopping, system, customisation)
• Round-trip encode/decode preserves all fields including escaped separators
• Blank/null stored value falls back to defaults
• Malformed lines are silently skipped

https://claude.ai/code/session_014SVjLmSTdqY3hSCrK59YFV
EOF
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