[proggeramlug]

HTTP response prototype calls traverse the composite handle dispatcher and resolve the method name again. Install separate native bodies for setHeader, writeHead, write, and end at sealed-prototype construction. Each body checks the receiver's current ordinary-layout word, native payload type word, and exact payload vtable before entering the shared response operation. Own-field growth preserves the carrier proof. Legacy handles and incompatible receivers retain complete dispatch; ordinary method lookup preserves subclass overrides and prototype patches. No cache or additional registry is introduced.

Adds a unit witness for the four installed bodies, receivers with added own fields, attached response carriers, and successful legacy-handle fallback. The Node parity fixture covers subclasses, all four overrides, prototype patches, accessors, overflow, and incompatible receivers.

Same-host alternating instructions:u, median of three runs per arm, with one executable path and ASLR disabled:

Witness	Base	Head	Delta	Node parity	.text bytes (base → head)
fastify_inject	14,606,583,543	14,429,352,605	-1.213%	pass	37,765,122 → 37,767,682
commander	2,815,601,963	2,815,599,411	-0.000%	pass	9,501,058 → 9,501,058
qs_parse	8,726,822,949	8,737,303,778	+0.120%	pass	14,006,594 → 14,006,594
effect (noopt)	6,043,090,073	6,043,152,152	+0.001%	pass	29,824,930 → 29,824,930
zodwork	2,883,287,873	2,883,638,695	+0.012%	pass	9,854,226 → 9,854,226

Measured baseline 8143bf333 and production candidate fe34bcd85; the landing revision rebases the same implementation and narrows the parity fixture to scalar headers. The former 10.25% inclusive composite dispatch share includes native operation work, which remains under the direct bodies. Composite dispatch falls to 2.19%; the carrier proof is 0.08% of samples. The qs delta has no changed sampled hot-function opcode sequence; only the cold HTTP prototype builder and a builder closure change among common functions, consistent with link/address-layout sensitivity. Static layout/atom ordering and control .text sizes are unchanged.

Validation on landing head cb2aadd86:

• Canonical release build and sidecars; targeted unit test (1 passed).
• New Node parity gap in fast and auto modes; existing response-key and socket/on-finished gaps. Two other existing HTTP gaps retain byte-identical baseline differences from Node (prototype symbol inventory and finish-event ordering).
• Full fastify PERRY_PROBE_VERIFY: 4,662,569 checked, zero disagreements.
• Windows cargo-xwin check: runtime, stdlib, ext-http.
• Official perrymaster merged-tree build, zod/tsc smoke, and scoped unit: PMCHECK-OK. The script's warning-only workspace test-target build reports missing system glib-2.0.
• Both GC dominance corpora pass (414 native modules / 81 dependency modules): zero unrooted or stale hazards; all 40 seeded violations caught in each corpus, with the original pmdom thresholds and current build-perry/sidecar recipe.

A supplemental probe-mode run of the new small fixture exposes a pre-existing deleted-own-accessor/overflow slow-dispatch discrepancy, identical on baseline and landing head; normal/auto mode and the full fastify probe pass. Header array identity and writeHead header-object interception also differ from Node on baseline and are outside this dispatch change.

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📒 Files selected for processing: 7

• changelog.d/12836-http-direct-methods.md
• crates/perry-ext-http/src/server/handle_dispatch.rs
• crates/perry-ext-http/src/server/mod.rs
• crates/perry-ext-http/src/server/native_dispatch.rs
• crates/perry-ext-http/src/server/response_methods.rs
• crates/perry-runtime/src/object/node_http_prototypes.rs
• test-files/test_gap_http_response_direct_methods.ts

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