fix(clippy): bring source under -D warnings ahead of CI

Prep for the Forgejo CI gate. Adjustments per module are small
and local:

  - test modules get inner `#![allow(clippy::unwrap_used,
    expect_used, panic)]` so the existing assert.expect()
    test idiom keeps working without rewriting every fixture
  - the dead_code field that downstream consumers may still
    want serialised gets an explicit #[allow(dead_code)]
  - manual char/range comparisons fold to the idiomatic forms
    (`['…']`, `(2..=5).contains(&n)`)
  - one snake_case rename in text-readability-score

Also re-bakes module.wasm so the committed artefact matches
the post-fmt source byte-for-byte.

No behaviour change, no test change. cargo fmt --all -- --check
and cargo clippy --all-targets -- -D warnings now both pass.

Signed-off-by: flemming-it <sf@flemming.it>

src/lib.rs

@@ -49,7 +49,7 @@ pub fn invoke(_ctx: Context, inputs: Inputs) -> Result<Outputs, ModuleError> {
         .require_json("norm")
         .map_err(|e| ModuleError::invalid_input(format!("norm shape: {e}")))?;
 
-    let graph_iVm: Option<InputGraph> = inputs.get("graph").and_then(|p| match p {
+    let graph_ivm: Option<InputGraph> = inputs.get("graph").and_then(|p| match p {
         Payload::Json(s) => serde_json::from_str(s).ok(),
         _ => None,
     });
@@ -62,7 +62,7 @@ pub fn invoke(_ctx: Context, inputs: Inputs) -> Result<Outputs, ModuleError> {
         .join(" ");
 
     let flesch = flesch_de(&full_text);
-    let depth = depth_index(graph_iVm.as_ref());
+    let depth = depth_index(graph_ivm.as_ref());
     let composite = composite_frust(flesch, depth);
 
     let out = Output {
@@ -89,7 +89,10 @@ fn flesch_de(text: &str) -> f32 {
 }
 
 fn count_sentences(text: &str) -> usize {
-    text.chars().filter(|c| matches!(c, '.' | '!' | '?')).count().max(1)
+    text.chars()
+        .filter(|c| matches!(c, '.' | '!' | '?'))
+        .count()
+        .max(1)
 }
 
 fn count_syllables(word: &str) -> usize {
@@ -134,6 +137,7 @@ fn composite_frust(flesch: f32, depth: f32) -> f32 {
 
 #[cfg(test)]
 mod tests {
+    #![allow(clippy::unwrap_used, clippy::expect_used, clippy::panic)]
     use super::*;
 
     #[test]