5440f8ea14774b342bf890aa220e63a324db4b5f

add .env to .gitignore and update ignore patterns for log, temp, and backup files
``
copilot-instructions
developent stragegy
if you are ai assistant
- please read
.github/copilot-instructions.md
- please read
.github/memry_bank/notes.md
- always ignore the pattern matching
.ai_ignore
mentioned.
if you are human
- please refer to :
project/002_source/README.md
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