diff --git a/.github/workflows/build-linux.yml b/.github/workflows/build-linux.yml
index 2057c4edb9..50c5a0428f 100644
--- a/.github/workflows/build-linux.yml
+++ b/.github/workflows/build-linux.yml
@@ -192,6 +192,7 @@ jobs:
         run: |
           ../scripts/check-doc-symbols.sh \
             linux/ARCHITECTURE.md \
+            linux/docs/adding-drivers.md \
             linux/docs/state-management.md \
             linux/docs/storage.md \
             linux/docs/testing.md \
diff --git a/linux/crates/app/Cargo.toml b/linux/crates/app/Cargo.toml
index e29064f3fc..8a6849cd5b 100644
--- a/linux/crates/app/Cargo.toml
+++ b/linux/crates/app/Cargo.toml
@@ -81,7 +81,7 @@ relm4.workspace = true
 rustix = { workspace = true, features = ["time"] }
 secrecy.workspace = true
 tokio.workspace = true
-tokio-util = { workspace = true, features = ["rt"] }
+tokio-util.workspace = true
 tracing.workspace = true
 tracing-subscriber.workspace = true
 uuid.workspace = true
@@ -97,7 +97,7 @@ tablepro-session = { workspace = true, features = ["fakes"] }
 tablepro-test-fixtures.workspace = true
 tablepro-test-support.workspace = true
 tempfile.workspace = true
-tokio = { workspace = true, features = ["macros", "rt", "test-util"] }
+tokio = { workspace = true, features = ["rt", "test-util"] }
 # tokio-postgres logs through `log`, so the logging tests drive that
 # bridge the way it does.
 log = "0.4"
diff --git a/linux/crates/core/Cargo.toml b/linux/crates/core/Cargo.toml
index abdb754d84..b52cfa2534 100644
--- a/linux/crates/core/Cargo.toml
+++ b/linux/crates/core/Cargo.toml
@@ -18,14 +18,14 @@ serde.workspace = true
 serde_json.workspace = true
 sqlparser.workspace = true
 thiserror.workspace = true
-tokio = { workspace = true, features = ["io-util", "macros", "rt", "sync", "time"] }
-tokio-util = { workspace = true, features = ["rt"] }
+tokio = { workspace = true, features = ["io-util", "rt"] }
+tokio-util.workspace = true
 uuid.workspace = true
 
 [dev-dependencies]
 proptest.workspace = true
 zip.workspace = true
-tokio = { workspace = true, features = ["macros", "rt", "test-util"] }
+tokio = { workspace = true, features = ["rt", "test-util"] }
 
 [lints]
 workspace = true
diff --git a/linux/crates/drivers/clickhouse/Cargo.toml b/linux/crates/drivers/clickhouse/Cargo.toml
index b71c94009e..b79db0f8e0 100644
--- a/linux/crates/drivers/clickhouse/Cargo.toml
+++ b/linux/crates/drivers/clickhouse/Cargo.toml
@@ -22,8 +22,8 @@ secrecy.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 sqlparser.workspace = true
-tokio = { workspace = true, features = ["io-util", "macros", "rt", "sync", "time"] }
-tokio-util = { workspace = true, features = ["rt"] }
+tokio = { workspace = true, features = ["io-util", "rt"] }
+tokio-util.workspace = true
 tower-service.workspace = true
 tracing.workspace = true
 uuid.workspace = true
@@ -32,7 +32,7 @@ uuid.workspace = true
 tablepro-test-fixtures.workspace = true
 tablepro-test-support.workspace = true
 rustls.workspace = true
-tokio = { workspace = true, features = ["macros", "rt-multi-thread", "test-util"] }
+tokio = { workspace = true, features = ["test-util"] }
 
 [lints]
 workspace = true
diff --git a/linux/crates/drivers/mssql/Cargo.toml b/linux/crates/drivers/mssql/Cargo.toml
index b9498adeee..c225f1903c 100644
--- a/linux/crates/drivers/mssql/Cargo.toml
+++ b/linux/crates/drivers/mssql/Cargo.toml
@@ -18,15 +18,15 @@ deadpool.workspace = true
 futures-util.workspace = true
 secrecy.workspace = true
 tiberius.workspace = true
-tokio = { workspace = true, features = ["macros", "rt", "sync", "time"] }
-tokio-util = { workspace = true, features = ["compat", "rt"] }
+tokio = { workspace = true, features = ["rt"] }
+tokio-util = { workspace = true, features = ["compat"] }
 tracing.workspace = true
 uuid.workspace = true
 
 [dev-dependencies]
 tablepro-test-fixtures.workspace = true
 tablepro-test-support.workspace = true
-tokio = { workspace = true, features = ["io-util", "macros", "rt-multi-thread", "test-util"] }
+tokio = { workspace = true, features = ["io-util", "test-util"] }
 
 [lints]
 workspace = true
diff --git a/linux/crates/drivers/mysql/Cargo.toml b/linux/crates/drivers/mysql/Cargo.toml
index 414c9ae1c3..9d47ae179a 100644
--- a/linux/crates/drivers/mysql/Cargo.toml
+++ b/linux/crates/drivers/mysql/Cargo.toml
@@ -15,15 +15,15 @@ futures-util.workspace = true
 secrecy.workspace = true
 sqlx = { workspace = true, features = ["mysql", "mysql-rsa", "tls-rustls-aws-lc-rs"] }
 thiserror.workspace = true
-tokio = { workspace = true, features = ["macros", "rt", "sync", "time"] }
-tokio-util = { workspace = true, features = ["rt"] }
+tokio = { workspace = true, features = ["rt"] }
+tokio-util.workspace = true
 tracing.workspace = true
 
 [dev-dependencies]
 tablepro-test-fixtures.workspace = true
 tablepro-test-support.workspace = true
 tempfile.workspace = true
-tokio = { workspace = true, features = ["macros", "rt-multi-thread", "test-util"] }
+tokio = { workspace = true, features = ["test-util"] }
 tracing-subscriber.workspace = true
 
 [lints]
diff --git a/linux/crates/drivers/postgres/Cargo.toml b/linux/crates/drivers/postgres/Cargo.toml
index 71ab903a65..6692c78b72 100644
--- a/linux/crates/drivers/postgres/Cargo.toml
+++ b/linux/crates/drivers/postgres/Cargo.toml
@@ -17,10 +17,10 @@ futures-util.workspace = true
 postgres-protocol.workspace = true
 postgres-types.workspace = true
 secrecy.workspace = true
-tokio = { workspace = true, features = ["macros", "rt", "sync", "time"] }
+tokio = { workspace = true, features = ["rt"] }
 tokio-postgres.workspace = true
 tokio-postgres-rustls.workspace = true
-tokio-util = { workspace = true, features = ["rt"] }
+tokio-util.workspace = true
 tracing.workspace = true
 uuid.workspace = true
 
@@ -28,7 +28,7 @@ uuid.workspace = true
 tablepro-test-fixtures.workspace = true
 tablepro-test-support.workspace = true
 rustls.workspace = true
-tokio = { workspace = true, features = ["io-util", "macros", "rt-multi-thread", "test-util"] }
+tokio = { workspace = true, features = ["io-util", "test-util"] }
 
 [lints]
 workspace = true
diff --git a/linux/crates/drivers/sqlite/Cargo.toml b/linux/crates/drivers/sqlite/Cargo.toml
index 615a9f5a37..7bad3ec1f3 100644
--- a/linux/crates/drivers/sqlite/Cargo.toml
+++ b/linux/crates/drivers/sqlite/Cargo.toml
@@ -16,7 +16,7 @@ futures.workspace = true
 libsqlite3-sys.workspace = true
 sqlparser.workspace = true
 sqlx = { workspace = true, features = ["sqlite-unbundled"] }
-tokio = { workspace = true, features = ["macros", "rt", "sync", "time"] }
+tokio = { workspace = true, features = ["rt"] }
 tokio-util.workspace = true
 tracing.workspace = true
 uuid.workspace = true
diff --git a/linux/crates/net/Cargo.toml b/linux/crates/net/Cargo.toml
index b21e08553e..d176f36486 100644
--- a/linux/crates/net/Cargo.toml
+++ b/linux/crates/net/Cargo.toml
@@ -15,7 +15,7 @@ rustls-pki-types.workspace = true
 rustls-platform-verifier.workspace = true
 socket2.workspace = true
 thiserror.workspace = true
-tokio = { workspace = true, features = ["net", "rt", "time"] }
+tokio = { workspace = true, features = ["rt"] }
 tracing.workspace = true
 
 [dev-dependencies]
@@ -24,7 +24,7 @@ hyper-rustls.workspace = true
 hyper-util.workspace = true
 rcgen.workspace = true
 tempfile.workspace = true
-tokio = { workspace = true, features = ["macros", "rt-multi-thread", "io-util"] }
+tokio = { workspace = true, features = ["io-util"] }
 tokio-rustls.workspace = true
 tower-service.workspace = true
 
diff --git a/linux/crates/session/Cargo.toml b/linux/crates/session/Cargo.toml
index 7b7dfec6ce..34dcdd439d 100644
--- a/linux/crates/session/Cargo.toml
+++ b/linux/crates/session/Cargo.toml
@@ -19,8 +19,8 @@ tablepro-test-support = { workspace = true, optional = true }
 futures.workspace = true
 secrecy.workspace = true
 thiserror.workspace = true
-tokio = { workspace = true, features = ["rt", "sync", "time"] }
-tokio-util = { workspace = true, features = ["rt"] }
+tokio = { workspace = true, features = ["rt"] }
+tokio-util.workspace = true
 tracing.workspace = true
 uuid.workspace = true
 
@@ -29,7 +29,7 @@ tablepro-driver-postgres.workspace = true
 tablepro-test-fixtures.workspace = true
 tablepro-test-support.workspace = true
 tempfile.workspace = true
-tokio = { workspace = true, features = ["macros", "rt-multi-thread", "test-util", "sync"] }
+tokio = { workspace = true, features = ["test-util"] }
 
 [lints]
 workspace = true
diff --git a/linux/crates/ssh/Cargo.toml b/linux/crates/ssh/Cargo.toml
index c0d846d17d..4e3825f4c5 100644
--- a/linux/crates/ssh/Cargo.toml
+++ b/linux/crates/ssh/Cargo.toml
@@ -13,7 +13,7 @@ futures.workspace = true
 rustix = { workspace = true, features = ["fs", "process"] }
 secrecy.workspace = true
 thiserror.workspace = true
-tokio = { workspace = true, features = ["io-util", "process", "net", "time", "sync", "fs"] }
+tokio = { workspace = true, features = ["io-util", "fs"] }
 tokio-util.workspace = true
 tracing.workspace = true
 uuid.workspace = true
@@ -23,7 +23,7 @@ zeroize.workspace = true
 tablepro-test-support.workspace = true
 tempfile.workspace = true
 testcontainers.workspace = true
-tokio = { workspace = true, features = ["macros", "rt", "test-util"] }
+tokio = { workspace = true, features = ["rt", "test-util"] }
 
 [lints]
 workspace = true
diff --git a/linux/crates/storage/Cargo.toml b/linux/crates/storage/Cargo.toml
index 8eaeeeca36..9b5c4ffba4 100644
--- a/linux/crates/storage/Cargo.toml
+++ b/linux/crates/storage/Cargo.toml
@@ -13,7 +13,7 @@ secrecy.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 thiserror.workspace = true
-tokio = { workspace = true, features = ["fs", "sync"] }
+tokio = { workspace = true, features = ["fs"] }
 uuid.workspace = true
 sqlx = { workspace = true, features = ["sqlite-unbundled", "migrate", "macros"] }
 chrono.workspace = true
diff --git a/linux/crates/test-fixtures/Cargo.toml b/linux/crates/test-fixtures/Cargo.toml
index 358b0b14b0..1bb3ab8b1e 100644
--- a/linux/crates/test-fixtures/Cargo.toml
+++ b/linux/crates/test-fixtures/Cargo.toml
@@ -12,7 +12,7 @@ tempfile.workspace = true
 testcontainers.workspace = true
 testcontainers-modules = { workspace = true, features = ["postgres", "mssql_server"] }
 thiserror.workspace = true
-tokio = { workspace = true, features = ["fs", "io-util", "process"] }
+tokio = { workspace = true, features = ["fs", "io-util"] }
 uuid.workspace = true
 
 [dev-dependencies]
diff --git a/linux/crates/test-support/Cargo.toml b/linux/crates/test-support/Cargo.toml
index 97aaae246a..119657e5c8 100644
--- a/linux/crates/test-support/Cargo.toml
+++ b/linux/crates/test-support/Cargo.toml
@@ -13,11 +13,11 @@ secrecy.workspace = true
 tempfile.workspace = true
 uuid.workspace = true
 futures.workspace = true
-tokio = { workspace = true, features = ["io-util", "macros", "net", "rt", "sync", "time"] }
+tokio = { workspace = true, features = ["io-util", "rt"] }
 tokio-util.workspace = true
 
 [dev-dependencies]
-tokio = { workspace = true, features = ["macros", "rt", "rt-multi-thread", "test-util"] }
+tokio = { workspace = true, features = ["rt", "test-util"] }
 
 [lints]
 workspace = true
diff --git a/linux/docs/adding-drivers.md b/linux/docs/adding-drivers.md
index 713491a6a1..0fd906c3de 100644
--- a/linux/docs/adding-drivers.md
+++ b/linux/docs/adding-drivers.md
@@ -54,20 +54,20 @@ tablepro-core.workspace = true
 tablepro-net.workspace = true
 async-trait.workspace = true
 secrecy.workspace = true
-tokio = { workspace = true, features = ["macros", "rt", "sync", "time"] }
-tokio-util = { workspace = true, features = ["rt"] }
+tokio = { workspace = true, features = ["rt"] }
+tokio-util.workspace = true
 tracing.workspace = true
 
 [dev-dependencies]
 tablepro-test-fixtures.workspace = true
 tablepro-test-support.workspace = true
-tokio = { workspace = true, features = ["macros", "rt-multi-thread", "test-util"] }
+tokio = { workspace = true, features = ["test-util"] }
 
 [lints]
 workspace = true
 ```
 
-A driver depends on `tablepro-core`, and on `tablepro-net` when it speaks TLS or dials TCP. `secrecy` reads the password of a password login. It never depends on GTK, on `tablepro-session`, on `tablepro-ssh` or on another driver. Add the crate to `members` and to `[workspace.dependencies]` in `linux/Cargo.toml`.
+A driver depends on `tablepro-core`, and on `tablepro-net` when it speaks TLS or dials TCP. `secrecy` reads the password of a password login. It never depends on GTK, on `tablepro-session`, on `tablepro-ssh` or on another driver. Add the crate to `members` and to `[workspace.dependencies]` in `linux/Cargo.toml`. A member lists only the features its workspace entry does not already name.
 
 ## 3. `DatabaseDriver` and capabilities
 
@@ -316,7 +316,7 @@ A run streams `ResultEvent`s into a `ResultSink`:
 
 ### Structure changes
 
-`DdlDialect` lives in the driver's `src/ddl.rs`, implemented on the dialect type itself, so `ddl()` returns `Some(self)`. It plans every structure change the Structure tab makes, against the `TableDefinition` that `fetch_table_definition` returned:
+`DdlDialect` lives in the driver's `ddl` module, as `crates/drivers/postgres/src/ddl.rs` or, once it spans files, `crates/drivers/sqlite/src/ddl/`, implemented on the dialect type itself, so `ddl()` returns `Some(self)`. It plans every structure change the Structure tab makes, against the `TableDefinition` that `fetch_table_definition` returned:
 
 | Method | What it does |
 |---|---|
@@ -329,7 +329,7 @@ A run streams `ResultEvent`s into a `ResultSink`:
 | `plan_drop_table` | The default writes `DROP TABLE [IF EXISTS] <table> [CASCADE]`. |
 | `create_table_script` | The server's own CREATE statement where the engine keeps one, and `NoTableSource` when the definition carries none; the default writes it from the definition. |
 
-Plans quote every name through the dialect, splice a catalogue type unchanged and a typed one only after `parse_type` accepts it, and write a literal default through `SqlDialect::literal`. `tablepro_core::ddl::ddl_sql` has the pieces most engines share. The golden tests for each plan sit in `src/ddl.rs`, and the driver's integration target runs `ddl_conformance_suite!` (see [testing.md](testing.md#ddl-conformance)).
+Plans quote every name through the dialect, splice a catalogue type unchanged and a typed one only after `parse_type` accepts it, and write a literal default through `SqlDialect::literal`. `tablepro_core::ddl::ddl_sql` has the pieces most engines share. The golden tests for each plan sit in that module, and the driver's integration target runs `ddl_conformance_suite!` (see [testing.md](testing.md#ddl-conformance)).
 
 ## 8. Registration
 
@@ -354,7 +354,7 @@ Without this step the crate compiles and the app never offers it.
 The layout every driver follows:
 
 - Unit tests next to the code, for pure logic: the dialect, error mapping, decoders, statement classification.
-- `tests/integration/main.rs` with one module per topic: `support.rs` (start a fixture, connect, run), `conformance_engine.rs`, `tls.rs` for a network engine, and the engine's own behaviour (`metadata.rs`, `write_batch.rs`, `cancellation.rs` and so on). A network engine's test starts its own container and is `#[ignore = "requires docker"]`.
+- One integration target with one module per topic, as `crates/drivers/postgres/tests/integration/main.rs`: `support.rs` (start a fixture, connect, run), `conformance_engine.rs`, `tls.rs` for a network engine, and the engine's own behaviour (`metadata.rs`, `write_batch.rs`, `cancellation.rs` and so on). A network engine's test starts its own container and is `#[ignore = "requires docker"]`.
 - A container fixture in `crates/test-fixtures` for anything the default image cannot do: TLS from the generated PKI, a second principal that logs in with a client certificate.
 
 The conformance suites are the contract's own tests. The driver's `conformance_engine.rs` invokes the connection and DDL suites, and a network engine's `tls.rs` the TLS suite. [testing.md](testing.md#conformance) has the adapter traits, the flags and the cases, with the [DDL](testing.md#ddl-conformance) and [TLS](testing.md#tls-conformance) suites after them.