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+# Implementation strategy
+
+## Phase 1 (required)
+
+Implement `raw` protocol end-to-end with:
+
+- rustls TLS server/client
+- KX modes: X25519 vs X25519MLKEM768
+- handshake latency + TTLB
+- concurrency and NDJSON output
+
+## Phase 2 (optional)
+
+Add `http1` mode using hyper:
+
+- keep the same measurement interface
+- reuse the same runner + output format
+- run a smaller experiment matrix first (sanity + realism comparison)
+
+### Rule
+
+- Do not block Phase 1 on Phase 2.