Write down ideas and next steps

ideas.md

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+# Ideas for GedächtNAS
+
+This file is a collection of potentially fairly fine-grained ideas for future
+GedächtNAS development, like a TODO list without commitment. Ideally, each idea
+takes a short time to implement and represents an incremental improvement.
+
+Once an idea has been implemented, it should be deleted from this file.
+
+- cli: `status` command
+- cli: `repo list` command
+- cli: `repo add` command
+- cli: `repo rename` command
+- cli: `repo remove` command
+- cli: Single-letter aliases for commands
+- Logging (`log` or `tracing`?)
+- app: Make log available in UI, for debugging and testing
+- app: Create repo from dropdown
+- app: Rename repo (repo settings popup)
+- app: Delete repo (from settings popup)
+- Migratable data types for saving/loading commits
+- app: Save button
+- Try out `snafu`
+- Set up Android app building in CI (should be included in first release)