fix: clippy clean for round-2 (pipeline module export, lint cleanup)

.hermes/plans/mytheclipse-round2-spec.md

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+# Implementation Spec: Round 2
+
+## New Features
+
+### 1. ServiceBuilder (mytheclipse-core)
+File: `crates/mytheclipse/src/service_builder.rs`
+- Builder that wraps async operations with retry + circuit breaker + timeout + rate limiter
+- Fluent API: `.retry(config)`, `.circuit(config)`, `.timeout(dur)`, `.rate(rate, burst)`, `.concurrency(max)`, `.run(fut)`
+- Feature gate: `resiliency` (uses existing retry/CircuitBreaker/timeout primitives)
+- Integrates with metrics: records retries, circuit events, timeouts
+
+### 2. DistributedLock (mytheclipse-core)  
+File: `crates/mytheclipse/src/dlock.rs`
+- `DistributedLock` trait: `acquire(timeout)`, `release()`, `extend(lease_dur)`
+- `InProcDistributedLock` impl using tokio Mutex + lease time tracking
+- `RedisLock` impl (feature `redis`) — Redis SETNX with PX expiry
+- Feature gate: `lifecycle` (uses existing leader election infra)
+
+### 3. StreamingPipeline (mytheclipse-queue)
+File: `crates/mytheclipse-queue/src/pipeline.rs`
+- Pipe stages: `Stage<Input, Output>` trait with async `process(item) -> Output`
+- Pipeline: `add_stage(impl Stage)`, `run(input_stream)`, `collect()`
+- Backpressure: bounded channel between stages
+- Feature gate: `in-memory` (uses tokio + std)