cmd_fsck: use access_local(), remove dead AnyView::load()

Convert cmd_fsck to async and use access_local() for the cached store.
Still uses Store::load_from_logs() for fresh comparison.

Remove unused AnyView::load() method - was never called.

Remaining Store::load() calls are all internal caching infrastructure:
- persist.rs cached() for CACHED_STORE
- mod.rs access() fallback for STORE_ACCESS

Co-Authored-By: Proof of Concept <poc@bcachefs.org>

src/cli/admin.rs

@@ -59,8 +59,9 @@ pub async fn cmd_init() -> Result<()> {
     Ok(())
 }
 
-pub fn cmd_fsck() -> Result<()> {
-    let mut store = store::Store::load()?;
+pub async fn cmd_fsck() -> Result<()> {
+    let arc = memory::access_local()?;
+    let mut store = arc.lock().await;
 
     // Check cache vs log consistency
     let log_store = store::Store::load_from_logs()?;
@@ -92,7 +93,7 @@ pub fn cmd_fsck() -> Result<()> {
 
     if cache_issues > 0 {
         eprintln!("{} cache inconsistencies found — rebuilding from logs", cache_issues);
-        store = log_store;
+        *store = log_store;
         store.save().context("rebuild save")?;
     }