fix(cache): recover unreadable cache rows

CHANGELOG.md

@@ -1,5 +1,6 @@
 # Changelog
 
+- **Fixed** Unreadable local task-cache rows are now ignored, discarded when possible, and treated as cache misses instead of preventing tasks from running ([#555](https://github.com/voidzero-dev/vite-task/pull/555)).
 - **Fixed** The task cache now supports much larger automatically tracked input sets without hitting wincode's default 4 MiB sequence preallocation limit ([#554](https://github.com/voidzero-dev/vite-task/pull/554)).
 - **Fixed** npm workspace patterns beginning with `./` now discover matching packages correctly ([vite-plus#2201](https://github.com/voidzero-dev/vite-plus/issues/2201), [#547](https://github.com/voidzero-dev/vite-task/pull/547)).
 - **Fixed** Failures while forwarding output from a started task process no longer incorrectly say the process failed to spawn ([#506](https://github.com/voidzero-dev/vite-task/issues/506)).

crates/vite_task/src/session/cache/display.rs

@@ -143,6 +143,7 @@ fn format_env_changed_inline(names: &[&Str]) -> Str {
 /// Returns `Some(formatted_string)` for Hit, Miss with reason, and Disabled, None for `NotFound`.
 /// - Cache Hit: Shows "cache hit" indicator
 /// - Cache Miss (NotFound): No inline message (just command)
+/// - Cache Miss (Unreadable): Shows that the local row was ignored
 /// - Cache Miss (with mismatch): Shows "cache miss" with brief reason
 /// - Cache Disabled: Shows "cache disabled" with reason
 ///
@@ -158,6 +159,9 @@ pub fn format_cache_status_inline(cache_status: &CacheStatus) -> Option<Str> {
             // This keeps the output clean for first-time executions
             None
         }
+        CacheStatus::Miss(CacheMiss::Unreadable) => {
+            Some(Str::from("○ cache miss: unreadable local cache entry ignored, executing"))
+        }
         CacheStatus::Miss(CacheMiss::FingerprintMismatch(mismatch)) => {
             // Show "cache miss" with reason why cache couldn't be used
             let reason = match mismatch {