Address review comments on PR #578: catch OverflowError in _parse_int and fix parse_float annotation

[Copilot]

Describe your changes

Addresses both comments in the review thread on PR #578. Since #578 comes from a fork, its commit was cherry-picked onto this branch first, then the review fixes applied on top.

• _parse_int overflow safety — the int(float(val)) fallback introduced in fix: parse_float(bool/int) and parse_int(float-string) return wrong results #578 could raise OverflowError for inputs like "inf" or "1e309" (where float(...) yields infinity), breaking get_int(...) callers instead of falling back to the default. The fallback now catches (ValueError, OverflowError) and returns None.
• parse_float type annotation — signature updated from val: str to val: bool | float | int | str to reflect the input types it actually accepts.

def _parse_int(val: str) -> int | None:
    try:
        return int(val)
    except ValueError:
        try:
            return int(float(val))
        except (ValueError, OverflowError):
            return None

Related issue
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Checklist before requesting a review

• I have performed a self-review of my code.
• I have added tests for the proposed changes.
• I have run the tests and there are not errors.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.33%. Comparing base (1c510aa) to head (52a5f5d).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #584   +/-   ##
=======================================
  Coverage   98.32%   98.33%           
=======================================
  Files          64       64           
  Lines        2392     2399    +7     
=======================================
+ Hits         2352     2359    +7     
  Misses         40       40           

Flag	Coverage Δ
unittests	98.33% <100.00%> (+<0.01%)	⬆️

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