test(e2e): Add comprehensive tag-aware expand testing to verify tag corruption fix - Add new test section for feature-expand tag creation and testing - Verify tag preservation during expand, force expand, and expand --all operations - Test that master tag remains intact and feature-expand tag receives subtasks correctly - Fix file path references to use correct .taskmaster/tasks/tasks.json location - Fix config file check to use .taskmaster/config.json instead of .taskmasterconfig - All tag corruption verification tests pass successfully in E2E test

.changeset/bright-llamas-enter.md

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+---
+"task-master-ai": patch
+---
+
+Fix expand command preserving tagged task structure and preventing data corruption

.changeset/eighty-breads-wonder.md

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+---
+"task-master-ai": patch
+---
+
+Added comprehensive tag-aware expand tests to the E2E suite:
+
+- Introduce a new `feature-expand` tag for testing.
+- Add tasks under `feature-expand` and capture their IDs dynamically.
+- Verify tag counts before and after:
+  - `expand --tag`
+  - `expand --tag --force`
+  - `expand --tag --all`
+- Ensure no existing tags are corrupted and subtasks are created as expected.
+- Reordered the new tests to run before any task-removal steps.
+- Fixed file-path checks for `.taskmaster/config.json` and
+  `.taskmaster/tasks/tasks.json`.