PYTHON-5889 - Clean up AGENTS.md instructions (mongodb#2909)

Author: NoahStapp

AGENTS.md

@@ -4,7 +4,6 @@
 Official Python driver for MongoDB.
 
 ## Tech Stack
-- **Build/env:** `hatch` — use `hatch run test:test` and `hatch run test:test-async`, not `pytest` directly
 - **Task runner:** `just` (Justfile at repo root)
 - **Linter/formatter:** `ruff` via pre-commit
 - **Type checker:** `mypy` (strict)
@@ -13,37 +12,31 @@ Official Python driver for MongoDB.
 > **Never** run `pip install bson`. PyMongo ships its own `bson`; the PyPI `bson` package silently breaks things.
 
 ## Project Structure
-- `pymongo/synchronous/` — sync driver (MongoClient, Collection, Database, etc.) generated from `pymongo/asynchronous/` using unasync
-- `pymongo/asynchronous/` — async API, mirrors `pymongo/synchronous/`
+- `pymongo/asynchronous/` — async driver (AsyncMongoClient, AsyncCollection, etc.)
+- `pymongo/synchronous/` — sync driver (MongoClient, Collection, etc.) generated from `pymongo/asynchronous/` using `just synchro`
 - `bson/` — BSON implementation
 - `gridfs/` — GridFS API
-- `test/` — sync test suite
-- `test/asynchronous/` — async test suite, mirrors `test/`
+- `test/asynchronous/` — async test suite
+- `test/` — sync test suite (generated from `test/asynchronous/` by `just synchro`) and shared test suite
 - `test/unified_format/` — cross-driver spec tests (Unified Test Format)
-- `tools/convert_test_to_async.py` — generates async test stubs from sync tests
+
+Do not edit files in `pymongo/synchronous/` or mirrored files in `test/` directly: they are generated by `just synchro` from `pymongo/asynchronous/` and `test/asynchronous/`.
+A file in `test/` is mirrored if a file of the same name exists in `test/asynchronous/`.
 
 ## Commands
 ```bash
-just install          # set up venv + pre-commit hook
-just typing-mypy      # type check
-just run lint-manual  # ruff linter
-
-hatch run test:test         # run sync tests
-hatch run test:test-async   # run async tests
-
-MONGODB_VERSION=8.0 just run-server  # start a local MongoDB server
+just install                # set up venv + pre-commit hooks
+just typing                 # type check
+just lint-manual            # pre-commit linting and synchro
+just synchro                # generate synchronous driver and mirrored tests
+just test                   # run all tests
+just test test/asynchronous # run async tests
+MONGODB_VERSION=8.0 just run-server  # start a local MongoDB 8.0 server
 ```
 
 ## Testing
 Tests require a live MongoDB server (`just run-server` above).
 
-Never modify pymongo/synchronous code first; update the async counterpart and run our `tools/synchro.py` script:
-1. Make changes in `pymongo/asynchronous` or top-level `pymongo/` files and `test/`.
-2. Run `tools/convert_test_to_async.py` on the sync test file to generate a starting-point async version.
-3. Manually complete the async version in `test/asynchronous/`.
-
-Do not edit files in `pymongo/synchronous/` or mirrored files in `test/` directly — they are auto-generated by `tools/synchro.py` from `pymongo/asynchronous/` and `test/asynchronous/`. Only edit them if the change includes a `_IS_SYNC` statement.
-
 Async functions must not call blocking I/O.
 
 New features need integration tests. Bug fixes need regression tests.

justfile

@@ -64,6 +64,11 @@ lint *args="": && resync
 lint-manual *args="": && resync
     uvx pre-commit run --all-files --hook-stage manual {{args}}
 
+# Run synchro
+[group('lint')]
+synchro: && resync
+    uvx pre-commit run --all-files synchro
+
 # Run pytest (e.g. just test test/test_uri_parser.py)
 [group('test')]
 test *args="-v --durations=5 --maxfail=10": && resync