update

tests/TC011-root-vnode.md

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+# Test Case: Root Vnode Lookup
+
+**Test ID**: TC011-root-vnode
+
+## Objective
+
+Verify the mounted root vnode has the encoded root NID, directory attributes,
+and the same top-level names as the fixture source.
+
+## Fixture
+
+Use `images/compact.erofs` and `source/compact`. The structured evidence records
+the root NID and compact inode size. Follow `tests/G1-MANUAL-SETUP.md`.
+
+## Procedure
+
+After mounting on `$mnt`:
+
+```sh
+stat -f 'ino=%i type=%HT mode=%Lp nlink=%l' "$mnt"
+stat -f '%i' "$mnt" > /tmp/tc011-root-nid
+ls -la "$mnt"
+(cd /tmp/repo22-g1/source/compact && ls -1A | sort) > /tmp/tc011-source-names
+(cd "$mnt" && ls -1A | sort) > /tmp/tc011-mount-names
+diff -u /tmp/tc011-source-names /tmp/tc011-mount-names
+cat "$mnt/root.txt"
+```
+
+Compare `/tmp/tc011-root-nid` with `root_nid` from `fixture-evidence.txt`, then
+unmount, detach, and remove the two temporary name lists.
+
+## Expected Results
+
+- Root inode equals the encoded NID and reports a traversable directory.
+- The complete top-level name lists match and `root.txt` is readable.
+- All operations and cleanup return zero.