diff --git a/packages/workflow-role-committer/__tests__/committer.test.ts b/packages/workflow-role-committer/__tests__/committer.test.ts
index 4ea0901..2f10788 100644
--- a/packages/workflow-role-committer/__tests__/committer.test.ts
+++ b/packages/workflow-role-committer/__tests__/committer.test.ts
@@ -58,7 +58,7 @@ describe("createCommitterRole", () => {
     };
     const role = createCommitterRole(
       agent,
-      { provider, dryRun: null },
+      { provider, dryRun: null, dryRunMeta: { branch: "dry-run", message: "chore: dry run" } },
       { cwd: repo, remote: "origin", threadId: null },
     );
     const out = await role(makeCtx());
@@ -69,7 +69,11 @@ describe("createCommitterRole", () => {
     const agent: AgentFn = async () => {
       throw new Error("agent should not run");
     };
-    const role = createCommitterRole(agent, { provider, dryRun: true });
+    const role = createCommitterRole(agent, {
+      provider,
+      dryRun: true,
+      dryRunMeta: { branch: "dry-run", message: "chore: dry run" },
+    });
     const out = await role(makeCtx());
     expect(out.content).toBe("[dry-run] committer skipped");
     expect(out.meta).toEqual({ committed: true });
@@ -87,7 +91,7 @@ describe("createCommitterRole", () => {
     const agent: AgentFn = async () => "plan text";
     const role = createCommitterRole(
       agent,
-      { provider, dryRun: null },
+      { provider, dryRun: null, dryRunMeta: { branch: "dry-run", message: "chore: dry run" } },
       { cwd: repo, remote: "origin", threadId: null },
     );
 
diff --git a/packages/workflow-role-committer/src/committer.ts b/packages/workflow-role-committer/src/committer.ts
index e851eb4..05a9f93 100644
--- a/packages/workflow-role-committer/src/committer.ts
+++ b/packages/workflow-role-committer/src/committer.ts
@@ -18,6 +18,8 @@ const committerPlanSchema = z.object({
   message: z.string().describe("Single-line conventional commit subject"),
 });
 
+export type CommitterPlanMeta = z.infer<typeof committerPlanSchema>;
+
 export type CommitterGitConfig = {
   cwd: string;
   remote: string;
@@ -90,7 +92,7 @@ Reply with enough detail that a maintainer understands the change; structured ex
 async function runCommitterPipeline(
   ctx: ThreadContext,
   agent: AgentFn,
-  extract: { provider: LlmProvider; dryRun: boolean | null },
+  extract: { provider: LlmProvider; dryRun: boolean | null; dryRunMeta: CommitterPlanMeta },
   gitConfig: CommitterGitConfig,
 ): Promise<RoleResult<CommitterMeta>> {
   const cwd = gitConfig.cwd;
@@ -107,6 +109,7 @@ async function runCommitterPipeline(
   const plan = await extractMetaOrThrow("committer-plan", raw, committerPlanSchema, {
     provider: extract.provider,
     dryRun: resolveExtractDryRun(extract.dryRun),
+    dryRunMeta: extract.dryRunMeta,
   });
 
   const branch = sanitizeBranch(plan.branch);
@@ -129,7 +132,7 @@ async function runCommitterPipeline(
  */
 export function createCommitterRole(
   adapter: AgentFn,
-  extract: { provider: LlmProvider; dryRun: boolean | null },
+  extract: { provider: LlmProvider; dryRun: boolean | null; dryRunMeta: CommitterPlanMeta },
   gitConfig: CommitterGitConfig = DEFAULT_COMMITTER_GIT_CONFIG,
 ): Role<CommitterMeta> {
   const inner: Role<CommitterMeta> = async (ctx) =>
diff --git a/packages/workflow-role-committer/src/index.ts b/packages/workflow-role-committer/src/index.ts
index ef91d66..e0bb49a 100644
--- a/packages/workflow-role-committer/src/index.ts
+++ b/packages/workflow-role-committer/src/index.ts
@@ -1,6 +1,7 @@
 export {
   type CommitterGitConfig,
   type CommitterMeta,
+  type CommitterPlanMeta,
   committerMetaSchema,
   createCommitterRole,
   DEFAULT_COMMITTER_GIT_CONFIG,
diff --git a/packages/workflow-role-llm/__tests__/create-role.test.ts b/packages/workflow-role-llm/__tests__/create-role.test.ts
index 176063e..a462537 100644
--- a/packages/workflow-role-llm/__tests__/create-role.test.ts
+++ b/packages/workflow-role-llm/__tests__/create-role.test.ts
@@ -64,7 +64,7 @@ describe("createRole", () => {
       schema,
       systemPrompt: "hello",
       agent,
-      extract: { provider, dryRun: null },
+      extract: { provider, dryRun: null, dryRunMeta: { n: 0 } },
     });
 
     const out = await role(makeCtx());
@@ -85,7 +85,7 @@ describe("createRole", () => {
       schema: z.object({ n: z.number() }),
       systemPrompt: "p",
       agent,
-      extract: { provider, dryRun: null },
+      extract: { provider, dryRun: null, dryRunMeta: { n: 0 } },
     });
     await role(makeCtx());
 
@@ -103,7 +103,7 @@ describe("createRole", () => {
       schema,
       systemPrompt: async (ctx) => `rounds=${ctx.steps.length}`,
       agent,
-      extract: { provider, dryRun: null },
+      extract: { provider, dryRun: null, dryRunMeta: { n: 0 } },
     });
 
     const ctx = makeCtx();
@@ -121,7 +121,7 @@ describe("createRole", () => {
       schema: z.object({ n: z.number() }),
       systemPrompt: "p",
       agent,
-      extract: { provider, dryRun: null },
+      extract: { provider, dryRun: null, dryRunMeta: { n: 0 } },
     });
     await role(makeCtx());
 
@@ -129,7 +129,7 @@ describe("createRole", () => {
       "r1",
       "raw",
       expect.anything(),
-      expect.objectContaining({ provider, dryRun: false }),
+      expect.objectContaining({ provider, dryRun: false, dryRunMeta: { n: 0 } }),
     );
   });
 
@@ -142,7 +142,7 @@ describe("createRole", () => {
       schema: z.object({ n: z.number() }),
       systemPrompt: "p",
       agent,
-      extract: { provider, dryRun: true },
+      extract: { provider, dryRun: true, dryRunMeta: { n: 0 } },
     });
     await role(makeCtx());
 
@@ -150,7 +150,7 @@ describe("createRole", () => {
       "r2",
       "raw",
       expect.anything(),
-      expect.objectContaining({ dryRun: true }),
+      expect.objectContaining({ dryRun: true, dryRunMeta: { n: 0 } }),
     );
   });
 });
diff --git a/packages/workflow-role-llm/__tests__/extract-meta.test.ts b/packages/workflow-role-llm/__tests__/extract-meta.test.ts
index f5c80d2..d61fe3f 100644
--- a/packages/workflow-role-llm/__tests__/extract-meta.test.ts
+++ b/packages/workflow-role-llm/__tests__/extract-meta.test.ts
@@ -12,7 +12,7 @@ const provider = {
 describe("extractMetaOrThrow", () => {
   const originalFetch = globalThis.fetch;
 
-  test("dryRun returns schema-shaped defaults without calling fetch", async () => {
+  test("dryRun returns dryRunMeta without calling fetch", async () => {
     let calls = 0;
     globalThis.fetch = () => {
       calls += 1;
@@ -23,12 +23,13 @@ describe("extractMetaOrThrow", () => {
     const out = await extractMetaOrThrow("r", "raw", schema, {
       provider,
       dryRun: true,
+      dryRunMeta: { n: 7 },
     });
 
     globalThis.fetch = originalFetch;
 
     expect(calls).toBe(0);
-    expect(out).toEqual({ n: 0 });
+    expect(out).toEqual({ n: 7 });
   });
 
   test("throws when extraction fails after retry", async () => {
@@ -53,7 +54,7 @@ describe("extractMetaOrThrow", () => {
     const schema = z.object({ n: z.number() });
 
     await expect(
-      extractMetaOrThrow("plan", "text", schema, { provider, dryRun: false }),
+      extractMetaOrThrow("plan", "text", schema, { provider, dryRun: false, dryRunMeta: { n: 0 } }),
     ).rejects.toThrow(/structured extraction failed after retry/);
 
     globalThis.fetch = originalFetch;
@@ -91,6 +92,7 @@ describe("extractMetaOrThrow", () => {
     const out = await extractMetaOrThrow("committer-plan", "plan text", schema, {
       provider,
       dryRun: false,
+      dryRunMeta: { branch: "", message: "" },
     });
 
     globalThis.fetch = originalFetch;
diff --git a/packages/workflow-role-llm/__tests__/llm-extract.test.ts b/packages/workflow-role-llm/__tests__/llm-extract.test.ts
index d936906..55c55de 100644
--- a/packages/workflow-role-llm/__tests__/llm-extract.test.ts
+++ b/packages/workflow-role-llm/__tests__/llm-extract.test.ts
@@ -55,6 +55,7 @@ describe("llmExtract", () => {
         model: "m",
       },
       dryRun: false,
+      dryRunMeta: { name: "", description: "" },
     });
 
     globalThis.fetch = originalFetch;
@@ -105,6 +106,7 @@ describe("llmExtract", () => {
       schema,
       provider: { baseUrl: "https://example.com", apiKey: "k", model: "m" },
       dryRun: false,
+      dryRunMeta: { n: 0 },
     });
 
     globalThis.fetch = originalFetch;
@@ -116,7 +118,7 @@ describe("llmExtract", () => {
     expect(result.error.kind).toBe("schema_validation_failed");
   });
 
-  test("dryRun skips fetch and returns schema-shaped stub values", async () => {
+  test("dryRun skips fetch and returns dryRunMeta", async () => {
     let calls = 0;
     globalThis.fetch = () => {
       calls += 1;
@@ -129,6 +131,7 @@ describe("llmExtract", () => {
       schema,
       provider: { baseUrl: "https://example.com", apiKey: "k", model: "m" },
       dryRun: true,
+      dryRunMeta: { n: 42 },
     });
 
     globalThis.fetch = originalFetch;
@@ -138,6 +141,6 @@ describe("llmExtract", () => {
     if (!result.ok) {
       return;
     }
-    expect(result.value).toEqual({ n: 0 });
+    expect(result.value).toEqual({ n: 42 });
   });
 });
diff --git a/packages/workflow-role-llm/src/create-role.ts b/packages/workflow-role-llm/src/create-role.ts
index 162c991..3ec9fc1 100644
--- a/packages/workflow-role-llm/src/create-role.ts
+++ b/packages/workflow-role-llm/src/create-role.ts
@@ -10,8 +10,9 @@ export type CreateRoleArgs<M extends Record<string, unknown>> = {
   agent: AgentFn;
   extract: {
     provider: LlmProvider;
-    /** When `true`, structured extract returns schema-shaped defaults. When `null`, live API extract. */
+    /** When `true`, structured extract returns `dryRunMeta`. When `null`, live API extract. */
     dryRun: boolean | null;
+    dryRunMeta: M;
   };
 };
 
@@ -28,6 +29,7 @@ export function createRole<M extends Record<string, unknown>>(args: CreateRoleAr
     const meta = await extractMetaOrThrow(args.name, raw, args.schema, {
       provider: args.extract.provider,
       dryRun: resolveExtractDryRun(args.extract.dryRun),
+      dryRunMeta: args.extract.dryRunMeta,
     });
     return { content: raw, meta };
   };
diff --git a/packages/workflow-role-llm/src/extract-meta.ts b/packages/workflow-role-llm/src/extract-meta.ts
index 08045c9..f532311 100644
--- a/packages/workflow-role-llm/src/extract-meta.ts
+++ b/packages/workflow-role-llm/src/extract-meta.ts
@@ -6,13 +6,14 @@ export async function extractMetaOrThrow<T extends Record<string, unknown>>(
   roleName: string,
   raw: string,
   schema: z.ZodType<T>,
-  options: { provider: LlmProvider; dryRun: boolean },
+  options: { provider: LlmProvider; dryRun: boolean; dryRunMeta: T },
 ): Promise<T> {
   const result = await llmExtractWithRetry({
     text: raw,
     schema,
     provider: options.provider,
     dryRun: options.dryRun,
+    dryRunMeta: options.dryRunMeta,
   });
   if (!result.ok) {
     throw new Error(
diff --git a/packages/workflow-role-llm/src/index.ts b/packages/workflow-role-llm/src/index.ts
index 653fc29..a8b66ba 100644
--- a/packages/workflow-role-llm/src/index.ts
+++ b/packages/workflow-role-llm/src/index.ts
@@ -3,7 +3,6 @@ export {
   type OnFailOptions,
   onFail,
   type RoleDecorator,
-  schemaDefaults,
   type WithDryRunOptions,
   withDryRun,
 } from "@uncaged/workflow-util-role";
diff --git a/packages/workflow-role-llm/src/llm-extract.ts b/packages/workflow-role-llm/src/llm-extract.ts
index 085fa22..adc7159 100644
--- a/packages/workflow-role-llm/src/llm-extract.ts
+++ b/packages/workflow-role-llm/src/llm-extract.ts
@@ -1,5 +1,4 @@
 import { err, ok, type Result } from "@uncaged/workflow";
-import { schemaDefaults } from "@uncaged/workflow-util-role";
 import * as z from "zod/v4";
 import type { LlmProvider } from "./types.js";
 
@@ -10,6 +9,8 @@ export type LlmExtractArgs<T> = {
   schema: z.ZodType<T>;
   provider: LlmProvider;
   dryRun: boolean;
+  /** Returned when `dryRun` is true (ignored for live extract). */
+  dryRunMeta: T;
 };
 
 export type LlmError =
@@ -128,7 +129,7 @@ async function performLlmExtract<T>(
   options: LlmExtractArgs<T> & { userContent: string },
 ): Promise<Result<T, LlmError>> {
   if (options.dryRun) {
-    return ok(schemaDefaults(options.schema) as T);
+    return ok(options.dryRunMeta);
   }
 
   const rawJsonSchema = z.toJSONSchema(options.schema) as Record<string, unknown>;
diff --git a/packages/workflow-role-reviewer/__tests__/reviewer.test.ts b/packages/workflow-role-reviewer/__tests__/reviewer.test.ts
index 6b6b31b..5db315f 100644
--- a/packages/workflow-role-reviewer/__tests__/reviewer.test.ts
+++ b/packages/workflow-role-reviewer/__tests__/reviewer.test.ts
@@ -58,7 +58,11 @@ describe("createReviewerRole", () => {
       return "review done";
     };
 
-    const role = createReviewerRole(agent, { provider, dryRun: null });
+    const role = createReviewerRole(agent, {
+      provider,
+      dryRun: null,
+      dryRunMeta: { approved: true },
+    });
     const out = await role(makeCtx());
     expect(out.meta).toEqual({ approved: true });
   });
@@ -74,7 +78,7 @@ describe("createReviewerRole", () => {
 
     const role = createReviewerRole(
       agent,
-      { provider, dryRun: null },
+      { provider, dryRun: null, dryRunMeta: { approved: false } },
       {
         cwd: "/proj",
         conventionsPath: null,
diff --git a/packages/workflow-role-reviewer/src/reviewer.ts b/packages/workflow-role-reviewer/src/reviewer.ts
index 9bf40b2..7e13576 100644
--- a/packages/workflow-role-reviewer/src/reviewer.ts
+++ b/packages/workflow-role-reviewer/src/reviewer.ts
@@ -90,7 +90,7 @@ or
  */
 export function createReviewerRole(
   adapter: AgentFn,
-  extract: { provider: LlmProvider; dryRun: boolean | null },
+  extract: { provider: LlmProvider; dryRun: boolean | null; dryRunMeta: ReviewerMeta },
   config: ReviewerConfig = DEFAULT_REVIEWER_CONFIG,
 ): Role<ReviewerMeta> {
   return createRole({
@@ -98,6 +98,10 @@ export function createReviewerRole(
     schema: reviewerMetaSchema,
     systemPrompt: async (ctx) => reviewerPrompt(config, ctx),
     agent: adapter,
-    extract: { provider: extract.provider, dryRun: extract.dryRun },
+    extract: {
+      provider: extract.provider,
+      dryRun: extract.dryRun,
+      dryRunMeta: extract.dryRunMeta,
+    },
   });
 }
diff --git a/packages/workflow-template-solve-issue/src/roles.ts b/packages/workflow-template-solve-issue/src/roles.ts
index 99e872d..0795845 100644
--- a/packages/workflow-template-solve-issue/src/roles.ts
+++ b/packages/workflow-template-solve-issue/src/roles.ts
@@ -1,5 +1,9 @@
 import type { AgentFn, Role } from "@uncaged/workflow";
-import { type CommitterMeta, createCommitterRole } from "@uncaged/workflow-role-committer";
+import {
+  type CommitterMeta,
+  type CommitterPlanMeta,
+  createCommitterRole,
+} from "@uncaged/workflow-role-committer";
 import { createRole, type LlmProvider } from "@uncaged/workflow-role-llm";
 import { createReviewerRole, type ReviewerMeta } from "@uncaged/workflow-role-reviewer";
 import * as z from "zod/v4";
@@ -33,6 +37,26 @@ export type PlannerMeta = z.infer<typeof plannerMetaSchema>;
 
 export type CoderMeta = z.infer<typeof coderMetaSchema>;
 
+const PLANNER_DRY_RUN_META: PlannerMeta = {
+  plan: "",
+  files: [],
+  approach: "",
+};
+
+const CODER_DRY_RUN_META: CoderMeta = {
+  filesChanged: [],
+  summary: "",
+};
+
+const REVIEWER_DRY_RUN_META: ReviewerMeta = {
+  approved: true,
+};
+
+const COMMITTER_PLAN_DRY_RUN_META: CommitterPlanMeta = {
+  branch: "dry-run",
+  message: "chore: dry run",
+};
+
 export type SolveIssueMeta = {
   planner: PlannerMeta;
   coder: CoderMeta;
@@ -40,7 +64,7 @@ export type SolveIssueMeta = {
   committer: CommitterMeta;
 };
 
-/** Wiring for workflow-role LLM structured extraction. Use null for schema-default dry runs (tests / stubs). */
+/** Wiring for workflow-role LLM structured extraction. Use `null` for stub extract (dry-run meta from built-in placeholders). */
 export type SolveIssueRolesConfig = {
   agent: AgentFn;
   workdir: string;
@@ -83,7 +107,11 @@ export function createSolveIssueRoles(config: SolveIssueRolesConfig): SolveIssue
     schema: plannerMetaSchema,
     systemPrompt: PLANNER_SYSTEM,
     agent: config.agent,
-    extract: { provider: extract.provider, dryRun: extract.dryRun },
+    extract: {
+      provider: extract.provider,
+      dryRun: extract.dryRun,
+      dryRunMeta: PLANNER_DRY_RUN_META,
+    },
   });
 
   const coder: Role<CoderMeta> = createRole({
@@ -91,18 +119,30 @@ export function createSolveIssueRoles(config: SolveIssueRolesConfig): SolveIssue
     schema: coderMetaSchema,
     systemPrompt: CODER_SYSTEM,
     agent: config.agent,
-    extract: { provider: extract.provider, dryRun: extract.dryRun },
+    extract: {
+      provider: extract.provider,
+      dryRun: extract.dryRun,
+      dryRunMeta: CODER_DRY_RUN_META,
+    },
   });
 
   const reviewer: Role<ReviewerMeta> = createReviewerRole(
     config.agent,
-    { provider: extract.provider, dryRun: extract.dryRun },
+    {
+      provider: extract.provider,
+      dryRun: extract.dryRun,
+      dryRunMeta: REVIEWER_DRY_RUN_META,
+    },
     reviewerGit,
   );
 
   const committer: Role<CommitterMeta> = createCommitterRole(
     config.agent,
-    { provider: extract.provider, dryRun: extract.dryRun },
+    {
+      provider: extract.provider,
+      dryRun: extract.dryRun,
+      dryRunMeta: COMMITTER_PLAN_DRY_RUN_META,
+    },
     committerGit,
   );
 
diff --git a/packages/workflow-util-role/src/index.ts b/packages/workflow-util-role/src/index.ts
index 1ad39da..973de1e 100644
--- a/packages/workflow-util-role/src/index.ts
+++ b/packages/workflow-util-role/src/index.ts
@@ -6,4 +6,3 @@ export {
   type WithDryRunOptions,
   withDryRun,
 } from "./decorators.js";
-export { schemaDefaults } from "./schema-defaults.js";
diff --git a/packages/workflow-util-role/src/schema-defaults.ts b/packages/workflow-util-role/src/schema-defaults.ts
deleted file mode 100644
index a63a68d..0000000
--- a/packages/workflow-util-role/src/schema-defaults.ts
+++ /dev/null
@@ -1,190 +0,0 @@
-import type * as z from "zod/v4";
-
-type ZodTypeAny = z.ZodType;
-
-type Def = Record<string, unknown> & { type: string };
-type TypeHandler = (schema: ZodTypeAny, def: Def) => unknown;
-
-function isPlainObject(value: unknown): value is Record<string, unknown> {
-  return typeof value === "object" && value !== null && !Array.isArray(value);
-}
-
-function isZodExactOptional(s: ZodTypeAny): boolean {
-  return s.constructor.name === "ZodExactOptional";
-}
-
-function resolveDefaultValue(defaultValue: unknown | (() => unknown)): unknown {
-  if (typeof defaultValue === "function") {
-    return (defaultValue as () => unknown)();
-  }
-  return defaultValue;
-}
-
-function mergeIntersection(left: unknown, right: unknown): unknown {
-  if (isPlainObject(left) && isPlainObject(right)) {
-    return { ...left, ...right };
-  }
-  return right;
-}
-
-function defaultsForObject(_schema: ZodTypeAny, def: Def): unknown {
-  const shape = def.shape as Record<string, ZodTypeAny> | undefined;
-  if (shape === undefined) {
-    return {};
-  }
-  const out: Record<string, unknown> = {};
-  for (const key of Object.keys(shape)) {
-    const child = shape[key];
-    const cdef = child.def as { type: string };
-    if (cdef.type === "optional") {
-      if (isZodExactOptional(child)) {
-        continue;
-      }
-      out[key] = undefined;
-    } else {
-      out[key] = schemaDefaultsInner(child);
-    }
-  }
-  return out;
-}
-
-function firstUnionOption(_schema: ZodTypeAny, def: Def): unknown {
-  const options = def.options as readonly ZodTypeAny[] | undefined;
-  if (options === undefined || options.length === 0) {
-    return null;
-  }
-  return schemaDefaultsInner(options[0]);
-}
-
-function defaultsFromNullable(_schema: ZodTypeAny, _def: Def): unknown {
-  return null;
-}
-
-function defaultsFromInner(_schema: ZodTypeAny, def: Def): unknown {
-  const inner = def.innerType as ZodTypeAny | undefined;
-  if (inner === undefined) {
-    return null;
-  }
-  return schemaDefaultsInner(inner);
-}
-
-function defaultsForPipe(_schema: ZodTypeAny, def: Def): unknown {
-  const out = def.out as ZodTypeAny | undefined;
-  if (out === undefined) {
-    return null;
-  }
-  return schemaDefaultsInner(out);
-}
-
-function defaultsForIntersection(_schema: ZodTypeAny, def: Def): unknown {
-  const left = def.left as ZodTypeAny | undefined;
-  const right = def.right as ZodTypeAny | undefined;
-  if (left === undefined || right === undefined) {
-    return null;
-  }
-  return mergeIntersection(schemaDefaultsInner(left), schemaDefaultsInner(right));
-}
-
-function defaultsForTuple(_schema: ZodTypeAny, def: Def): unknown {
-  const items = def.items as readonly ZodTypeAny[] | undefined;
-  if (items === undefined) {
-    return [];
-  }
-  return items.map((item) => schemaDefaultsInner(item));
-}
-
-function defaultsForLazy(schema: ZodTypeAny, def: Def): unknown {
-  const inner =
-    (schema as { _zod?: { innerType?: ZodTypeAny } })._zod?.innerType ??
-    (def.getter as (() => ZodTypeAny) | undefined)?.();
-  if (inner === undefined) {
-    return null;
-  }
-  return schemaDefaultsInner(inner);
-}
-
-function defaultsForPromise(_schema: ZodTypeAny, def: Def): unknown {
-  const inner = def.innerType as ZodTypeAny | undefined;
-  if (inner === undefined) {
-    return Promise.resolve(null);
-  }
-  return Promise.resolve(schemaDefaultsInner(inner));
-}
-
-function firstEnumValue(_schema: ZodTypeAny, def: Def): unknown {
-  const entries = def.entries as Record<string, string | number> | undefined;
-  if (entries === undefined) {
-    return null;
-  }
-  const values = Object.values(entries);
-  return values[0] ?? null;
-}
-
-function firstLiteralValue(_schema: ZodTypeAny, def: Def): unknown {
-  const values = def.values as unknown[] | undefined;
-  if (values === undefined || values.length === 0) {
-    return null;
-  }
-  return values[0];
-}
-
-const TYPE_HANDLERS: Record<string, TypeHandler> = {
-  string: () => "",
-  number: () => 0,
-  boolean: () => false,
-  bigint: () => 0n,
-  date: () => new Date(0),
-  symbol: () => Symbol(),
-  undefined: () => undefined,
-  null: () => null,
-  void: () => undefined,
-  any: () => null,
-  unknown: () => null,
-  never: () => undefined,
-  nan: () => Number.NaN,
-  array: () => [],
-  object: defaultsForObject,
-  record: () => ({}),
-  map: () => new Map(),
-  set: () => new Set(),
-  enum: firstEnumValue,
-  literal: firstLiteralValue,
-  optional: () => undefined,
-  nullable: defaultsFromNullable,
-  default: (_s, def) => resolveDefaultValue(def.defaultValue as unknown | (() => unknown)),
-  prefault: (_s, def) => resolveDefaultValue(def.defaultValue as unknown | (() => unknown)),
-  nonoptional: defaultsFromInner,
-  catch: defaultsFromInner,
-  success: () => false,
-  readonly: defaultsFromInner,
-  union: firstUnionOption,
-  xor: firstUnionOption,
-  intersection: defaultsForIntersection,
-  pipe: defaultsForPipe,
-  transform: () => null,
-  tuple: defaultsForTuple,
-  lazy: defaultsForLazy,
-  promise: defaultsForPromise,
-  file: () => new File([], ""),
-  function: () => null,
-  custom: () => null,
-  template_literal: () => "",
-};
-
-/**
- * Produces a structurally valid placeholder that mirrors primitive/array/object
- * shape for a Zod schema. Used for `llmExtract` dry runs so downstream code
- * does not throw on `undefined` fields.
- */
-export function schemaDefaults(schema: z.ZodType): unknown {
-  return schemaDefaultsInner(schema as ZodTypeAny);
-}
-
-function schemaDefaultsInner(schema: ZodTypeAny): unknown {
-  const def = schema.def as Def;
-  const run = TYPE_HANDLERS[def.type];
-  if (run === undefined) {
-    return null;
-  }
-  return run(schema, def);
-}