Move self-named module files to mod.rs form

docs/adr-011-runtime-ownership-and-task-lifetime-boundaries.md

@@ -47,7 +47,7 @@ hot cases; the one-time cases are justified on clarity grounds alone:
   per pushed message;
 - the client-pool scheduler couples an `Arc<PoolScheduler>` root, a
   `Mutex<SchedulerState>`, an atomic single-flight flag, and spawn-on-demand
-  service tasks (`src/client/pool/scheduler.rs`) — once per acquisition or
+  service tasks (`src/client/pool/scheduler/mod.rs`) — once per acquisition or
   lease drop;
 - `ProtocolHooks::from_protocol` clones the same `Arc` of the protocol
   object once per callback adapter — six clones for one protocol

docs/adr-013-client-pool-scheduler-and-slot-ownership.md

@@ -107,7 +107,7 @@ single-owner coordination rule.
 Primary code surfaces:
 
 - `src/client/pool/client_pool.rs`;
-- `src/client/pool/scheduler.rs`;
+- `src/client/pool/scheduler/mod.rs`;
 - `src/client/pool/handle.rs`;
 - `src/client/pool/lease.rs`;
 - `src/client/pool/slot.rs`;

docs/adr-014-server-shutdown-ownership.md

@@ -38,11 +38,11 @@ This ADR governs the server-runtime half of Epic
 
 Primary code surfaces:
 
-- `src/server/runtime/mod.rs` and `src/server/runtime/server.rs`;
+- `src/server/runtime/mod.rs` and `src/server/runtime/server/mod.rs`;
 - `src/server/runtime/supervisor.rs`;
 - `src/server/shutdown.rs`;
 - `src/server/error.rs`;
-- `src/metrics.rs`.
+- `src/metrics/mod.rs`.
 
 Related issues and decisions:
 

docs/developers-guide.md

@@ -1092,7 +1092,7 @@ build standard. The exception stands. Three test binaries fail:
   `panic_in_server_is_mapped_to_io_error_other`, a handler panic that is not
   caught.
 
-The `src/metrics.rs` doctest still fails to link, with undefined AWS-LC
+The `src/metrics/mod.rs` doctest still fails to link, with undefined AWS-LC
 symbols. Re-measure on the next toolchain pin.
 
 ## Cargo workspace semantics

docs/runtime-ownership-baselines.md

@@ -776,7 +776,7 @@ The mechanism the rework removed is verifiable in the source, and it is worth
 stating because it is what makes the result explicable rather than merely
 observed. `stop_servicing` — the only writer that clears `is_servicing` to
 false — has exactly one caller, `take_next_waiter_or_stop`
-(`src/client/pool/scheduler.rs`). The immediate-lease arm instead resolves
+(`src/client/pool/scheduler/mod.rs`). The immediate-lease arm instead resolves
 through `next_waiter`, which selects a queued request and never clears the
 flag, so a servicing worker can no longer be orphaned by a concurrent resolver.
 The pre-#535 code cleared the guard on that path, leaving waiters queued with

docs/users-guide.md

@@ -2906,7 +2906,7 @@ directories (one per shard on full dispatch runs) for offline triage.
 [^29]: Implemented in `src/fairness.rs` (lines 1-79).
 [^30]: Implemented in `src/connection.rs` (lines 240-441).
 [^31]: Implemented in `src/connection.rs` (lines 22-46).
-[^33]: Implemented in `src/metrics.rs` (lines 21-111).
+[^33]: Implemented in `src/metrics/mod.rs` (lines 21-111).
 [^34]: Implemented in `src/response.rs` (lines 46-151).
 [^35]: Implemented in `src/response.rs` (lines 156-209).
 [^36]: Demonstrated in `examples/async_stream.rs` (lines 1-23).

src/client/pool/scheduler.rs → src/client/pool/scheduler/mod.rs

@@ -392,7 +392,7 @@ where
 }
 
 #[cfg(test)]
-#[path = "scheduler_tests.rs"]
+#[path = "../scheduler_tests.rs"]
 mod poison_tests;
 mod service;
 #[cfg(test)]

src/server/runtime/server.rs → src/server/runtime/server/mod.rs

@@ -395,5 +395,5 @@ where
 }
 
 #[cfg(test)]
-#[path = "server/observation_tests.rs"]
+#[path = "observation_tests.rs"]
 mod observation_tests;

tests/workflow_contracts/dependency_scoping_test.py

@@ -55,8 +55,8 @@ def test_prometheus_exporter_remains_available_to_non_loom_doctests(manifest: di
         "metrics-exporter-prometheus must be available to non-Loom doctests"
     )
     assert "use metrics_exporter_prometheus::PrometheusBuilder;" in (
-        ROOT / "src" / "metrics.rs"
-    ).read_text(), "src/metrics.rs must retain the documented Prometheus example"
+        ROOT / "src" / "metrics" / "mod.rs"
+    ).read_text(), "src/metrics/mod.rs must retain the documented Prometheus example"
 
 
 def test_metrics_feature_does_not_enable_exporter(manifest: dict[str, typ.Any]) -> None: