fix(ai): preserve MCP toolkit service requirements

[brandon-julio-t]

Description

Fix MCP toolkit registration losing tool handler and schema service requirements. Incomplete servers could previously compile and fail with errors such as Service not found: effect/HttpClient.

registerToolkit and toolkit now apply Tool.HandlerServices to Tools[keyof Tools] rather than the tool record. The captured context tracks those requirements; runtime behavior is unchanged.

Focused type regressions cover dependencies from multiple tools, parameter decoding, success and failure encoding, and both registration APIs. Registration still excludes the per-call McpRequestContext and requires McpServerClient. Includes an effect patch changeset.

Validation

• Targeted type tests pass on TypeScript 5.9.3 and 6.0.3: 46 tests and 110 assertions combined. Against the pre-fix source, all five regression cases fail on both targets (24 failing assertions).
• pnpm check passes; MCP runtime tests pass (98 tests).
• Independent review at 1b092387c5 found no actionable findings.
• Final cleanup changes only changeset wording. pnpm lint-fix and git diff --check pass. Source and tests are unchanged from the reviewed commit.

All toolchain validation used nix develop -c.

Takeover checklist

• Refactor focused regression tests and add issue closure references.
• Independently validate the implementation; no refactor needed.
• Complete independent review with no actionable findings.
• Review comments and make the changeset concise.

Closes #8843
Closes EFF-1785

Related: #8526 covers decoder service requirements in Toolkit.handle.

[changeset-bot]

🦋 Changeset detected

Latest commit: ccd9bc8

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

This PR includes changesets to release 32 packages

Name	Type
effect	Patch
@effect/opentelemetry	Patch
@effect/vitest	Patch
@effect/ai-anthropic	Patch
@effect/ai-cloudflare	Patch
@effect/ai-openai-compat	Patch
@effect/ai-openai	Patch
@effect/ai-openrouter	Patch
@effect/ai-typesafe	Patch
@effect/atom-react	Patch
@effect/atom-solid	Patch
@effect/atom-vue	Patch
@effect/platform-browser	Patch
@effect/platform-bun	Patch
@effect/platform-deno	Patch
@effect/platform-node-shared	Patch
@effect/platform-node	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	38.94 KB	38.94 KB	0.00 KB (0.00%)
basic.ts	7.06 KB	7.06 KB	0.00 KB (0.00%)
batching.ts	10.14 KB	10.14 KB	0.00 KB (0.00%)
brand.ts	6.73 KB	6.73 KB	0.00 KB (0.00%)
cache.ts	10.89 KB	10.89 KB	0.00 KB (0.00%)
config.ts	22.25 KB	22.25 KB	0.00 KB (0.00%)
differ.ts	21.34 KB	21.34 KB	0.00 KB (0.00%)
http-client.ts	22.44 KB	22.44 KB	0.00 KB (0.00%)
http-router.ts	33.95 KB	33.95 KB	0.00 KB (0.00%)
logger.ts	11.21 KB	11.21 KB	0.00 KB (0.00%)
metric.ts	9.03 KB	9.03 KB	0.00 KB (0.00%)
optic.ts	6.96 KB	6.96 KB	0.00 KB (0.00%)
pubsub.ts	15.18 KB	15.18 KB	0.00 KB (0.00%)
queue.ts	12.13 KB	12.13 KB	0.00 KB (0.00%)
schedule.ts	11.22 KB	11.22 KB	0.00 KB (0.00%)
schema-bigdecimal.ts	13.74 KB	13.74 KB	0.00 KB (0.00%)
schema-binary.ts	40.00 KB	40.00 KB	0.00 KB (0.00%)
schema-class.ts	21.07 KB	21.07 KB	0.00 KB (0.00%)
schema-fromJsonSchemaDocument.ts	32.10 KB	32.10 KB	0.00 KB (0.00%)
schema-representation-roundtrip.ts	27.28 KB	27.28 KB	0.00 KB (0.00%)
schema-string-transformation.ts	14.48 KB	14.48 KB	0.00 KB (0.00%)
schema-string.ts	12.00 KB	12.00 KB	0.00 KB (0.00%)
schema-template-literal.ts	16.07 KB	16.07 KB	0.00 KB (0.00%)
schema-toArbitrary.ts	38.46 KB	38.46 KB	0.00 KB (0.00%)
schema-toCodeDocument.ts	25.30 KB	25.30 KB	0.00 KB (0.00%)
schema-toCodecJson.ts	20.26 KB	20.26 KB	0.00 KB (0.00%)
schema-toEquivalence.ts	20.45 KB	20.45 KB	0.00 KB (0.00%)
schema-toFormatter.ts	20.57 KB	20.57 KB	0.00 KB (0.00%)
schema-toJsonSchemaDocument.ts	25.03 KB	25.03 KB	0.00 KB (0.00%)
schema-toRepresentation.ts	20.55 KB	20.55 KB	0.00 KB (0.00%)
schema.ts	20.29 KB	20.29 KB	0.00 KB (0.00%)
stm.ts	13.23 KB	13.23 KB	0.00 KB (0.00%)
stream.ts	9.99 KB	9.99 KB	0.00 KB (0.00%)