Fix Content-Type preservation during HTTP compression

[tim-smart]

Compression could drop the Content-Type of file responses or replace an explicit header override with the body's original type. Preserve the response header when constructing compressed raw, stream, and byte-array bodies, falling back to the body's type when no header is present. This covers Node and the shared compression paths used by the web platform, Bun, and Deno.

Includes regressions for inferred HTML file types and header overrides, plus a patch changeset. Uncompressed Stream serialization is outside this change.

Validation: 81 focused Node/web tests, lint, and typecheck pass. Reviewer verification also passed the Bun suite (35 tests), Deno suite (235 passed, 11 skipped), and web compression tests under both runtimes (35 each).

Closes EFF-1328
Closes #8146

[changeset-bot]

🦋 Changeset detected

Latest commit: 1127920

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 30 packages

Name	Type
effect	Patch
@effect/platform-node	Patch
@effect/platform-node-shared	Patch
@effect/platform-bun	Patch
@effect/platform-deno	Patch
@effect/opentelemetry	Patch
@effect/vitest	Patch
@effect/ai-anthropic	Patch
@effect/ai-openai-compat	Patch
@effect/ai-openai	Patch
@effect/ai-openrouter	Patch
@effect/atom-react	Patch
@effect/atom-solid	Patch
@effect/atom-vue	Patch
@effect/platform-browser	Patch
@effect/sql-clickhouse	Patch
@effect/sql-d1	Patch
@effect/sql-libsql	Patch
@effect/sql-mssql	Patch
@effect/sql-mysql2	Patch
@effect/sql-pg	Patch
@effect/sql-pglite	Patch
@effect/sql-sqlite-bun	Patch
@effect/sql-sqlite-do	Patch
@effect/sql-sqlite-node	Patch
@effect/sql-sqlite-react-native	Patch
@effect/sql-sqlite-wasm	Patch
@effect/docgen	Patch
@effect/doctest	Patch
@effect/openapi-generator	Patch

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[github-actions]

Bundle Size Analysis

Generated from PR build output; treat the content below as untrusted.

File Name	Current Size	Previous Size	Difference
arbitrary-combinators.ts	34.16 KB	34.16 KB	0.00 KB (0.00%)
basic.ts	6.87 KB	6.87 KB	0.00 KB (0.00%)
batching.ts	9.95 KB	9.95 KB	0.00 KB (0.00%)
brand.ts	6.45 KB	6.45 KB	0.00 KB (0.00%)
cache.ts	10.77 KB	10.77 KB	0.00 KB (0.00%)
config.ts	21.43 KB	21.43 KB	0.00 KB (0.00%)
differ.ts	20.23 KB	20.23 KB	0.00 KB (0.00%)
http-client.ts	21.93 KB	21.93 KB	0.00 KB (0.00%)
http-router.ts	33.39 KB	33.39 KB	0.00 KB (0.00%)
logger.ts	10.88 KB	10.88 KB	0.00 KB (0.00%)
metric.ts	9.02 KB	9.02 KB	0.00 KB (0.00%)
optic.ts	6.70 KB	6.70 KB	0.00 KB (0.00%)
pubsub.ts	15.10 KB	15.10 KB	0.00 KB (0.00%)
queue.ts	11.85 KB	11.85 KB	0.00 KB (0.00%)
schedule.ts	10.96 KB	10.96 KB	0.00 KB (0.00%)
schema-binary.ts	39.42 KB	39.42 KB	0.00 KB (0.00%)
schema-class.ts	19.98 KB	19.98 KB	0.00 KB (0.00%)
schema-fromJsonSchemaDocument.ts	30.47 KB	30.47 KB	0.00 KB (0.00%)
schema-representation-roundtrip.ts	26.25 KB	26.25 KB	0.00 KB (0.00%)
schema-string-transformation.ts	13.60 KB	13.60 KB	0.00 KB (0.00%)
schema-string.ts	11.08 KB	11.08 KB	0.00 KB (0.00%)
schema-template-literal.ts	15.36 KB	15.36 KB	0.00 KB (0.00%)
schema-toArbitrary.ts	33.70 KB	33.70 KB	0.00 KB (0.00%)
schema-toCodeDocument.ts	24.51 KB	24.51 KB	0.00 KB (0.00%)
schema-toCodecJson.ts	19.18 KB	19.18 KB	0.00 KB (0.00%)
schema-toEquivalence.ts	19.32 KB	19.32 KB	0.00 KB (0.00%)
schema-toFormatter.ts	19.43 KB	19.43 KB	0.00 KB (0.00%)
schema-toJsonSchemaDocument.ts	23.69 KB	23.69 KB	0.00 KB (0.00%)
schema-toRepresentation.ts	19.48 KB	19.48 KB	0.00 KB (0.00%)
schema.ts	19.18 KB	19.18 KB	0.00 KB (0.00%)
stm.ts	12.80 KB	12.80 KB	0.00 KB (0.00%)
stream.ts	9.83 KB	9.83 KB	0.00 KB (0.00%)