Refine strings for clarity

[MihaiCristianCondrea]

Summary

• Drop trailing ellipses and tighten prompts in user-facing strings
• Reword notifications, donation message, and other text to address the user directly
• Replace abbreviations and ampersands with clearer phrasing such as "for example" and "and"

Testing

• ./gradlew test (fails: SDK location not found)

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https://chatgpt.com/codex/tasks/task_e_68b56658ecd4832d84088ad5fbc7f98a