chore: resolve SonarCloud maintainability issues (#1255)

* chore: resolve SonarCloud maintainability issues

* fix: address shellcheck SC2059 and fix generic cast ambiguity

* style: apply rustfmt formatting

* fix: restore compile and behaviour in Sonar refactors

- fonts: char::is_alphanumeric takes &self, so filter needs a closure
- h264: keep the mvd accumulator as i32 (prefix is usize)
- model: annotate the non-stacked range accumulators as f64
- engine: chart.options still clears the raw chart XML for upDownBars
  and quartiles; smartart goes back to the glob import (cmd! macro)
- web: keep the original viewport meta (behaviour change)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Assign positional parameters to locals in sha256 verification

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Dylan Taylor <dylan@craftmaker.dev>

crates/anim/src/path.rs

@@ -49,7 +49,7 @@ fn tokenize(s: &str) -> Vec<Tok> {
                     n1.is_ascii_digit() || ((n1 == '-' || n1 == '+') && n2.is_ascii_digit())
                 } {
                     i += 2;
-                    while cs.get(i).is_some_and(|d| d.is_ascii_digit()) {
+                    while cs.get(i).is_some_and(char::is_ascii_digit) {
                         i += 1;
                     }
                     break;