docs(hacktober): record require_type_hints.sh run (15 PRs closed) + script recommendations

[priya-sundaram-dev]

Follow-up to #15159, as requested in #15081 (comment).

@cclauss ran scripts/close_pull_requests_with_require_type_hints.sh at ~20:44 UTC, which closed 15 PRs (all carried the require type hints label). This PR records that run in docs/hacktober_2026_prep.md.

What changed

• Flipped [ ] -> [x] for the 15 closed PRs and replaced their labels with closed by close_pull_requests_with_require_type_hints.sh:
  feat: add 10 graph algorithms with tests #14824, Added PPMA compression algrithm #14810, feat: Add Splay Tree implementation #14726, Create look_and_say_sequence.py #14660, Added a percentage alogrithm #14402, Add 10 graph algorithms #14316, Add student result processor utility #14185, Change from qiskit import Aer to from qiskit_aer import AerSimulator #14138, Add iterative binary search implementation #14090, implementation of min stack #14014, feat: added unified tree traversal to compute preorder, inorder, and postorder in one pass #13773, added TSP solution using MST implementation with docstrings under Graphs #13682, Feat/snake water gun game #13658, Implement K-Medoids clustering algorithm #13488 #13644, feat: add Radial Basis Function Neural Network (Implements #12322) #13636
• Updated the Closed totals table: close_pull_requests_with_require_type_hints.sh = 15, Total = 15.

(Verified each of the 15 is state=closed, merged=false with the closing comment "Closing require_type_hints PRs to prepare for Hacktoberfest".)

Recommendations for the scripts/close_pull_requests_with_*.sh jobs

The five scripts are byte-for-byte identical except for one label name and one comment string. A few suggestions:

1. Correctness — the --limit 500 cap silently skips PRs. There are ~918 open PRs, but gh pr list ... --limit 500 returns at most 500, so any matching PR past the 500th is never closed. Filter server-side with --label "<label>" (and, if needed, --search) instead of pulling everything and matching in jq; that removes the cap for the labels that matter and is much faster.
2. De-duplicate into one parameterized script. e.g. close_pull_requests_with_label.sh "require type hints" deriving the comment from the label. Five copies drift: awaiting_changes/failing_tests have sleep 2, require_tests has it commented out, and require_type_hints/require_descriptive_names have none — a single source avoids that.
3. Consistent, deliberate throttling. Standardise on one sleep (or gh's built-in retry) so bulk closes don't trip secondary rate limits.
4. Safety rails. set -euo pipefail, an explicit --repo TheAlgorithms/Python, and a DRY_RUN=1 mode that prints what would close before a maintainer commits to it.
5. Machine-readable summary. Emit the list of closed PR numbers (and a final count) to stdout/a file so this tracker can be updated from the script output rather than by hand.

Happy to send these as a follow-up PR if you'd like — I kept this one docs-only so it stays easy to review.

Checklist

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one file (documentation); no algorithm added.
• All new Python files are placed inside an existing directory. (n/a — docs only)
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions. (n/a — docs only)
• All function parameters and return values are annotated with Python type hints. (n/a — docs only)
• All functions have doctests that pass the automated testing. (n/a — docs only)
• All new algorithms include at least one URL that points to Wikipedia or another similar explanation. (n/a — docs only)
• If this pull request resolves one or more open issues then the description above includes the issue number(s) with a closing keyword: related to priya-sundaram-dev as a maintainer? #15081.