🚨 configlet sync --test found unsynced tests

```
Checking exercises...
[warn] crypto-square: missing 1 test case
- 54 character plaintext results in 8 chunks, the last two with trailing spaces (33fd914e-fa44-445b-8f38-ff8fbc9fe6e6)
[warn] flower-field: missing 1 test case
- multiple adjacent flowers (6e4ac13a-3e43-4728-a2e3-3551d4b1a996)
[warn] grade-school: missing 16 test cases
- Add a student (9337267f-7793-4b90-9b4a-8e3978408824)
- Adding multiple students in the same grade in the roster (73c3ca75-0c16-40d7-82f5-ed8fe17a8e4a)
- Cannot add student to same grade in the roster more than once (87c871c1-6bde-4413-9c44-73d59a259d83)
- A student can't be in two different grades (c125dab7-2a53-492f-a99a-56ad511940d8)
- A student can only be added to the same grade in the roster once (a0c7b9b8-0e89-47f8-8b4a-c50f885e79d1)
- Student not added to same grade in the roster more than once (d7982c4f-1602-49f6-a651-620f2614243a)
- Adding students in multiple grades (e70d5d8f-43a9-41fd-94a4-1ea0fa338056)
- Cannot add same student to multiple grades in the roster (7df542f1-57ce-433c-b249-ff77028ec479)
- A student cannot be added to more than one grade in the sorted roster (6a03b61e-1211-4783-a3cc-fc7f773fba3f)
- Student not added to multiple grades in the roster (c7ec1c5e-9ab7-4d3b-be5c-29f2f7a237c5)
- Students are sorted by grades in the roster (d9af4f19-1ba1-48e7-94d0-dabda4e5aba6)
- Students are sorted by name in the roster (d9fb5bea-f5aa-4524-9d61-c158d8906807)
- Grade is empty if no students in that grade (1e0cf06b-26e0-4526-af2d-a2e2df6a51d6)
- Student not added to same grade more than once (2bfc697c-adf2-4b65-8d0f-c46e085f796e)
- Student not added to multiple grades (66c8e141-68ab-4a04-a15a-c28bc07fe6b9)
- Student not added to other grade for multiple grades (c9c1fc2f-42e0-4d2c-b361-99271f03eda7)
[warn] isbn-verifier: missing 2 test cases
- only one check digit is allowed (8005b57f-f194-44ee-88d2-a77ac4142591)
- X is not substituted by the value 10 (fdb14c99-4cf8-43c5-b06d-eb1638eff343)
[warn] largest-series-product: missing 2 test cases
- rejects span longer than string length (0ae1ce53-d9ba-41bb-827f-2fceb64f058b)
- rejects empty string and nonzero span (6cf66098-a6af-4223-aab1-26aeeefc7402)
[warn] perfect-numbers: missing 1 test case
- Abundant numbers -> Perfect square abundant number is classified correctly (05f15b93-849c-45e9-9c7d-1ea131ef7d10)
[warn] protein-translation: missing 4 test cases
- Non-existing codon can't translate (1e75ea2a-f907-4994-ae5c-118632a1cb0f)
- Unknown amino acids, not part of a codon, can't translate (9eac93f3-627a-4c90-8653-6d0a0595bc6f)
- Incomplete RNA sequence can't translate (9d73899f-e68e-4291-b1e2-7bf87c00f024)
- Incomplete RNA sequence can translate if valid until a STOP codon (43945cf7-9968-402d-ab9f-b8a28750b050)
[warn] reverse-string: missing 3 test cases
- wide characters (1bed0f8a-13b0-4bd3-9d59-3d0593326fa2)
- grapheme cluster with pre-combined form (93d7e1b8-f60f-4f3c-9559-4056e10d2ead)
- grapheme clusters (1028b2c1-6763-4459-8540-2da47ca512d9)
[warn] simple-linked-list: missing 29 test cases
- count -> Empty list has length of zero (962d998c-c203-41e2-8fbd-85a7b98b79b9)
- count -> Singleton list has length of one (9760262e-d7e4-4639-9840-87e2e2fbb115)
- count -> Non-empty list has correct length (d9955c90-637c-441b-b41d-8cfb48e924a8)
- pop -> Pop from empty list is an error (0c3966db-58f9-4632-b94c-8ea13e54c2c8)
- pop -> Can pop from singleton list (a4f9d2e1-7425-49ef-9ee8-6c0cb3407cf0)
- pop -> Can pop from non-empty list (6dcbb2c9-d98a-47bc-a010-9c19703d3ea2)
- pop -> Can pop multiple items (e83aade9-f030-4096-aaf0-f9dc6491e6cf)
- pop -> Pop updates the count (5c46bcf2-c0a9-4654-ae17-f3192436fcf1)
- push -> Can push to an empty list (70d747a1-2e84-4ebc-bc3f-dcbee6a05f6b)
- push -> Can push to an empty list (f3197f0a-1fea-45a5-939f-4a5ea60387ec)
- push -> Can push to a non-empty list (391e332e-1f91-4033-b1e0-0e0c17812fa7)
- push -> Push updates count (ed4b0e01-3bbd-4895-af25-152b5914b3da)
- push -> Push and pop (41666790-b932-4e5a-b323-e848a83d12d5)
- peek -> Peek on empty list is an error (930a4a5c-76f6-47ec-9be3-4e70993173a1)
- peek -> Can peek on singleton list (43255a50-d919-4e81-afce-e4a271eaedbd)
- peek -> Can peek on non-empty list (48353020-e25d-4621-a854-e35fb1e15fa7)
- peek -> Peek does not change the count (96fcead9-a713-46c2-8005-3f246c873851)
- peek -> Can peek after a pop and push (7576ed05-7ff7-4b84-8efb-d34d62c110f5)
- toList LIFO -> Empty linked list to list is empty (b97d00b6-2fab-435d-ae74-3233dcc13698)
- toList LIFO -> To list with multiple values (eedeb95f-b5cf-431d-8ad6-5854ba6b251c)
- toList LIFO -> To list after a pop (838678de-eaf3-4c14-b34e-7e35b6d851e8)
- toList FIFO -> Empty linked list to list is empty (03fc83a5-48a8-470b-a2d2-a286c5e8365f)
- toList FIFO -> To list with multiple values (1282484e-a58c-426a-972e-90746bda61fc)
- toList FIFO -> To list after a pop (05ca3109-1249-4c0c-a567-a3b2f8352a7c)
- reverse -> Reversed empty list has same values (5e6c1a3d-e34b-46d3-be59-3f132a820ed5)
- reverse -> Reversed singleton list is same list (93c87ed3-862a-474f-820b-ba3fd6b6daf6)
- reverse -> Reversed non-empty list is reversed (92851ebe-9f52-4406-b92e-0718c441a2ab)
- reverse -> Reversed non-empty list is reversed (1210eeda-b23f-4790-930c-7ac6d0c8e723)
- reverse -> Double reverse (9b53af96-7494-4cfa-9b77-b7366fed5c4c)
[warn] two-bucket: missing 2 test cases
- Measure using bucket one much bigger than bucket two (58d70152-bf2b-46bb-ad54-be58ebe94c03)
- Measure using bucket one much smaller than bucket two (9dbe6499-caa5-4a58-b5ce-c988d71b8981)
[warn] some exercises are missing test cases
```

Run `configlet sync --test` and use its output to inspect the missing test cases for crypto-square, flower-field, grade-school, isbn-verifier, largest-series-product, perfect-numbers, protein-translation, reverse-string, simple-linked-list, and two-bucket. Done means the listed cases are synchronized and the command no longer reports missing test cases.

Written by the indexing model from the issue text.