Reset rules at startup if persisted data is invalid

This should never happen, since it means we persisted data we can't load
again, but if it does happen somehow (a very buggy release that breaks
compatibility) this ensures that users see a clear error, and have their
rule data reset, instead of their app breaking inexplicably and
indefinitely, requiring a full reinstall.

Author: pimterry

src/model/rules/rules-store.ts

@@ -207,6 +207,16 @@ export class RulesStore {
                     rules: migrateRuleData(data.rules)
                 }),
                 customArgs: { rulesStore: this } as DeserializationArgs
+            }).catch((err) => {
+                console.log('Failed to load last-run rules',
+                    err,
+                    // Log the full rule data for debugging:
+                    JSON.parse(localStorage.getItem('rules-store') ?? '{}')?.rules
+                );
+
+                reportError(err);
+                alert(`Could not load rules from last run.\n\n${err}`);
+                // We then continue, which resets the rules exactly as if this was the user's first run.
             });
 
             if (!this.rules) {