* fix(sequentialthinking): restore nextThoughtNeeded in the advertised inputSchema required array
commit 1cdf806d (#3533) wrapped nextThoughtNeeded in a z.preprocess-based
coercedBoolean to fix a real footgun (string "false" coercing to true).
zod's toJSONSchema(..., { io: "input" }) treats a z.preprocess()-wrapped
field's input type as unknown, so it silently drops that field from the
emitted required array, even though it carries no .optional(). A client
that builds its call arguments from the advertised schema then omits
nextThoughtNeeded and gets a -32602 Invalid params from the runtime
validator, which still requires it.
Rebuild coercedBoolean as a transform on an explicit z.union([z.boolean(),
z.string()]) instead of z.preprocess. The union gives toJSONSchema a
concrete input type to report, so nextThoughtNeeded stays in required,
while parse behavior (including the case-insensitive string coercion
#3533 added) is unchanged.
Fixes#4651
* test(sequentialthinking): pin nextThoughtNeeded in required and string coercion
Runs against the built server so it checks the schema the SDK emits.
Skips when dist/ is absent, matching server-version.test.ts.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018Wo28CHPXyM3DHoLWvKnCK
---------
Co-authored-by: olaservo <olahungerford@gmail.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
