TLDR: it created program to decypher the string using opensource solutions related to enigma

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it searched for enigma-related repos and implementations, fetched various github repos parts, build inline descryption program.

It ran bunch of various scrips like:

clang++ -g -fsanitize=address /Users/dp/.gemini/antigravity/brain/e9a54e5f-1325-448a-8d43-fc537b901f34/scratch/enigma.cc -o /Users/dp/.gemini/antigravity/brain/e9a54e5f-1325-448a-8d43-fc537b901f34/scratch/enigma_dbg && echo "ICRVSORMCCWQTATYEVFXDBZGGSNXWLPSYWZYTCBSWULRTBZCVGODVJUSLSOOMJQJZSXSEBZPEYMDNXJYTC" | /Users/dp/.gemini/antigravity/brain/e9a54e5f-1325-448a-8d43-fc537b901f34/scratch/enigma_dbg -u B -w 123 -r AAA -g ... -c -l /Users/dp/.gemini/antigravity/brain/e9a54e5f-1325-448a-8d43-fc537b901f34/scratch/english

and

sed -n '1060,1130p' /Users/dp/.gemini/antigravity/brain/e9a54e5f-1325-448a-8d43-fc537b901f34/scratch/enigma.cc

and

Running 82M combination scan for unsteckered Enigma across all rotors, reflectors, positions, and ring settings. Monitoring progress.

and

Scanning all 60 rotor permutations and reflectors B and C across all ring settings (step 2) and all 17,576 indicator positions. Monitoring progress.

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I also have opus running. It produced some sypher cracker which is still running (estimated time 100min, is about 15 min left)

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My point is that astra isn't special. This appears to be quite narrow, well-documented and explored task. The goal itself is approacheable by other LLMs and non-researches task.