chore: auto-update README with latest solutions

Author: actions-user

README.md

@@ -3,14 +3,21 @@
 My clean, typed, and tested solutions to LeetCode problems (Python 3.10+).
 
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+✅ **Total**: **5**  
+🟢 **Easy**: 4 &nbsp; `░░░░░░░░░░` &nbsp; _(0.4%)_  
+🟡 **Medium**: 1 &nbsp; `░░░░░░░░░░` &nbsp; _(0.1%)_  
+🔴 **Hard**: 0 &nbsp; `░░░░░░░░░░` &nbsp; _(0.0%)_
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 ## Problems
 | # | Title | Difficulty | Solution |
 |---|-------|------------|----------|
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+| 1 | [Two Sum](https://leetcode.com/problems/two-sum/) | Easy | [`two_sum_0001.py`](solutions/two_sum_0001.py) |
+| 9 | [Palindrome Number](https://leetcode.com/problems/palindrome-number/) | Easy | [`palindrome_number_0009.py`](solutions/palindrome_number_0009.py) |
+| 12 | [Integer to Roman](https://leetcode.com/problems/integer-to-roman/) | Medium | [`integer_to_roman_0012.py`](solutions/integer_to_roman_0012.py) |
+| 13 | [Roman to Integer](https://leetcode.com/problems/roman-to-integer/) | Easy | [`roman_to_integer_0013.py`](solutions/roman_to_integer_0013.py) |
+| 83 | [Remove Duplicates from Sorted List](https://leetcode.com/problems/remove-duplicates-from-sorted-list/) | Easy | [`remove_duplicates_from_sorted_list_0083.py`](solutions/remove_duplicates_from_sorted_list_0083.py) |
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