TODO: flaky image_store_io attach test

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WzxdWY1k4muZfdVJfb7YGJ

TODO-fix-image-store-io-attach-pathnotfound.md

@@ -0,0 +1,27 @@
+# Fix flaky image_store_io_test "without picker copies everything is copied"
+
+## what
+`test/attachments/image_store_io_test.dart` "attachFile without picker copies
+everything is copied" fails about 1 run in 4 under parallel load with
+`PathNotFoundException: Cannot retrieve length of file` from
+`ImageCacheStore._run` (`lib/images/image_cache_store.dart:135`). The test
+returns while `IoImageStore.attachFile` still has its fire-and-forget
+`unawaited(_sync(const {}))` running; teardown deletes the temp root and the
+upload pass calls `file.length()` on a file that `existsSync()` just saw.
+Predates the AccountManager branch (no file in lib/images, lib/attachments or
+test/attachments was touched). Seen once as 591/592 and once with
+`--reporter expanded` at 635/636.
+
+## done
+`for i in $(seq 20); do flutter test test/attachments/image_store_io_test.dart --concurrency=4 || exit 1; done`
+exits 0, and the production path tolerates a file vanishing mid-pass (skip it
+instead of throwing).
+
+## verify
+Same loop on this repo; plus the full suite ends with "All tests passed!".
+
+## read first
+- lib/attachments/image_store_io.dart (`attachFile`, `_sync`)
+- lib/images/image_cache_store.dart (`_run`)
+
+REMOVE ME AFTER FINISH

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.0.50+1
+version: 1.0.51+1
 
 environment:
   sdk: ^3.12.2