chore: record pre-existing uncommitted repository state

Snapshot of the in-flight state that already existed, identically, in both
this worktree and the main checkout before this session began: the initial
HTTP Client platform implementation (previously untracked), the redis-lab
removal, and the JPA / object-storage / notification integration work.

Kept separate from this session's HTTP Client review response, which lands
in the following commit, so the two bodies of work stay reviewable apart.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

infra/httpclient/README.md

@@ -0,0 +1,12 @@
+# HTTP Client Platform — local test topology
+
+The suites drive these dependencies through Testcontainers and in-process fixtures, so nothing here
+is required to run `./gradlew :adapter:outbound:httpclient:test`. These files exist for the nightly
+lane and for reproducing a failure locally with the same images and ports CI uses.
+
+| Directory | Purpose | Used by |
+|---|---|---|
+| `toxiproxy/` | TCP fault injection (latency, reset, bandwidth) | `httpClientFailureInjectionTest` |
+| `tls/` | how the TLS and mTLS material is produced | TLS and mTLS suites |
+| `proxy/` | forward proxy with CONNECT and proxy authentication | proxy contract suite |
+| `oauth2/` | token endpoint behaviour under contention | OAuth2 suites |