Update system_prompt.py

[Nilzkool]

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[deepdocsai-test]

✅ Modified https://github.com/Nilzkool/ds_assistant/blob/main/docs/README_NEW.md
Reason: Update trailing system prompt literal to "THIS IS A TEST1" to match code change

✅ Modified https://github.com/Nilzkool/ds_assistant/blob/main/docs/SYSTEM_PROMPT_DOCS.md
Reason: Align system prompt text with updated code (TEST1)

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[deepdocsai-test]

✅ Modified https://github.com/Nilzkool/ds_assistant/blob/main/docs/README_NEW.md
Reason: Sync system prompt example with updated code change

✅ Modified https://github.com/Nilzkool/ds_assistant/blob/main/docs/SYSTEM_PROMPT_DOCS.md
Reason: Update test string to match code change

Triggering #: f2435e9

Docs update #: 89e5768

Credits used: 2
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[deepdocsai-test]

✅ Modified https://github.com/Nilzkool/ds_assistant/blob/main/docs/README_NEW.md
Reason: Updated trailing system prompt string to match code change in system_prompt.py

✅ Modified https://github.com/Nilzkool/ds_assistant/blob/main/docs/SYSTEM_PROMPT_DOCS.md
Reason: Sync system prompt text with updated code constant

Triggering #: 89e5768

Docs update #: 57eaede

Credits used: 2
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