Add Challenge61: Telegram Channel Secrets with Real API Integration#2206

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copilot/fix-2130

Mar 6, 2026

Commits on Aug 30, 2025

Initial plan
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Fix Java 23 to 17 compatibility issues for build

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Add Challenge59: Telegram Channel Secrets challenge

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Restore Java version to 23 as requested

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Use Java 23 syntax: replace .get(0) with .getFirst() and enhance Challenge59

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Use Java 23 getFirst() and getLast() methods everywhere instead of .get(0) and .get(size()-1)

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Implement Telegram API integration in Challenge59 - adds method to call Telegram Bot API using embedded token

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Fix failing actions: revert to Java 17 and add proper RestTemplate mocking in Challenge59 tests

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Commits on Aug 31, 2025

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Commits on Feb 25, 2026

Merge branch 'master' into copilot/fix-2130
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Commits on Feb 27, 2026

Merge branch 'master' into copilot/fix-2130
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