feat: edit workflow contracts in console

web/apps/console/src/styles/global.css

@@ -1978,6 +1978,89 @@ tbody tr:hover {
   margin: 0;
 }
 
+.workflow-contract-inspector,
+.workflow-schema-fields-form,
+.workflow-output-bindings,
+.workflow-outcomes-form {
+  display: grid;
+  gap: 0.75rem;
+  min-width: 0;
+}
+
+.workflow-contract-inspector {
+  padding: 0.75rem;
+  border: 1px solid var(--color-border);
+  background: #fff;
+}
+
+.workflow-contract-inspector h2,
+.workflow-contract-inspector h3,
+.workflow-contract-inspector h4 {
+  margin: 0;
+}
+
+.workflow-contract-inspector__status,
+.workflow-contract-inspector__impact {
+  padding: 0.55rem 0.65rem;
+  border-left: 3px solid var(--color-signal-amber);
+  background: #fff8e8;
+  color: var(--color-ink);
+  font-size: 0.8rem;
+}
+
+.workflow-schema-field,
+.workflow-output-bindings fieldset {
+  display: grid;
+  gap: 0.55rem;
+  min-width: 0;
+  padding: 0.7rem;
+  border: 1px solid var(--color-border);
+}
+
+.workflow-schema-field > label,
+.workflow-schema-field__state > label,
+.workflow-contract-entry label,
+.workflow-output-bindings fieldset > label,
+.workflow-outcomes-form label {
+  display: grid;
+  gap: 0.25rem;
+  color: var(--color-slate);
+  font-size: 0.76rem;
+  font-weight: 650;
+}
+
+.workflow-schema-field__state,
+.workflow-schema-field__children {
+  display: grid;
+  gap: 0.55rem;
+  padding-left: 0.65rem;
+  border-left: 2px solid var(--color-signal-green);
+}
+
+.workflow-schema-field--unsupported {
+  border-color: var(--color-signal-amber);
+  background: #fffaf0;
+}
+
+.workflow-schema-field pre,
+.workflow-output-bindings textarea {
+  max-width: 100%;
+  overflow: auto;
+}
+
+.workflow-contract-entry,
+.workflow-output-bindings__actions,
+.workflow-outcomes-form > div {
+  display: flex;
+  align-items: end;
+  gap: 0.5rem;
+}
+
+.workflow-contract-entry label,
+.workflow-outcomes-form label {
+  flex: 1;
+}
+
 .selected-capability-inspector {
   display: grid;
   align-content: start;

web/apps/console/src/workspace/authoring/ContextInspector.test.tsx

@@ -102,6 +102,9 @@ const controller = {
   updateCapability: vi.fn(),
   setStepInputs: vi.fn(),
   setStepOutputs: vi.fn(),
+  setContract: vi.fn(),
+  setStart: vi.fn(),
+  setWorkflowOutputBindings: vi.fn(),
   updateSetup: vi.fn(),
   setRoute: vi.fn(),
   validate: vi.fn(),
@@ -115,6 +118,30 @@ const controller = {
 } satisfies DraftAuthoringController;
 
 describe("ContextInspector", () => {
+  it("routes contract selections to the focused editor without deferred actions", () => {
+    render(
+      <ContextInspector
+        capabilities={[]}
+        capabilityDetail={null}
+        capabilityDetailMessage={null}
+        capabilityDetailPhase="ready"
+        controller={controller}
+        draft={{
+          ...draft,
+          draft: {
+            ...draft.draft,
+            input_schema: { type: "object", properties: { query: { type: "string" } } },
+          },
+        }}
+        selection={{ kind: "contract", contract: "input" }}
+      />,
+    );
+
+    expect(screen.getByRole("heading", { name: "Input contract" })).toBeInTheDocument();
+    expect(screen.getByRole("button", { name: "Save input schema" })).toBeInTheDocument();
+    expect(screen.queryByRole("heading", { name: "Deferred actions" })).not.toBeInTheDocument();
+  });
+
   it("binds the inspected capability schema and canonical node values", () => {
     render(
       <ContextInspector

web/apps/console/src/workspace/authoring/ContextInspector.tsx

@@ -8,6 +8,8 @@ import { CapabilityNodeForm } from "./CapabilityNodeForm.js";
 import { SelectedCapabilityInspector } from "./SelectedCapabilityInspector.js";
 import { RouteForm } from "./RouteForm.js";
 import type { DraftAuthoringController } from "./useDraftAuthoring.js";
+import { useAuthoringContract } from "./useAuthoringContract.js";
+import { WorkflowContractInspector } from "./WorkflowContractInspector.js";
 
 type ContextInspectorProps = {
   readonly draft: DraftWorkspace;
@@ -137,6 +139,36 @@ const DeferredActions = () => (
   </section>
 );
 
+const ContractInspector = ({
+  contract,
+  controller,
+  draft,
+}: {
+  readonly contract: Extract<WorkbenchSelection, { readonly kind: "contract" }>["contract"];
+  readonly controller: DraftAuthoringController;
+  readonly draft: DraftWorkspace;
+}) => {
+  const authoringContract = useAuthoringContract({
+    workspaceId: draft.workspaceId,
+    revision: draft.revision,
+    selectedStepId: null,
+  });
+  return (
+    <>
+      {authoringContract.phase === "loading" && <p role="status">Loading authoring choices...</p>}
+      {authoringContract.phase === "error" && (
+        <p role="alert">{authoringContract.message ?? "Authoring choices failed to load. Advanced repair remains available."}</p>
+      )}
+      <WorkflowContractInspector
+        contract={contract}
+        controller={controller}
+        draft={draft}
+        inventory={authoringContract.inventory}
+      />
+    </>
+  );
+};
+
 export const ContextInspector = ({
   draft,
   capabilities,
@@ -225,21 +257,7 @@ export const ContextInspector = ({
       </>
     );
   } else if (selection.kind === "contract") {
-    const contractNode = graph.nodes.find(
-      (candidate) => candidate.data.contract === selection.contract,
-    );
-    const title = selection.contract.charAt(0).toUpperCase() + selection.contract.slice(1);
-    content = (
-      <section
-        aria-labelledby="contract-selection-heading"
-        className="authoring-inspector__selection"
-      >
-        <p className="workspace-route-pending__eyebrow">Workflow projection</p>
-        <h2 id="contract-selection-heading">{title} contract</h2>
-        <p>{contractNode?.data.summary ?? "No contract fields are declared."}</p>
-        <p>This read-only projection is derived from the canonical draft.</p>
-      </section>
-    );
+    content = <ContractInspector contract={selection.contract} controller={controller} draft={draft} />;
   } else {
     const node = graph.nodes.find((candidate) => candidate.id === selection.nodeId);
     content = (

web/apps/console/src/workspace/authoring/CreateDraftDialog.test.tsx

@@ -71,6 +71,9 @@ const authoringClient: DraftAuthoringClient = {
   updateCapabilityStep: vi.fn(),
   setStepInputBindings: vi.fn(),
   setStepOutputBindings: vi.fn(),
+  setContract: vi.fn(),
+  setStart: vi.fn(),
+  setWorkflowOutputBindings: vi.fn(),
   setRoute: vi.fn(),
   validate: vi.fn(),
 };

web/apps/console/src/workspace/authoring/SelectedCapabilityInspector.test.tsx

@@ -142,6 +142,9 @@ const controllerFor = (workspace: DraftWorkspace): DraftAuthoringController => (
   updateCapability: vi.fn(),
   setStepInputs: vi.fn(),
   setStepOutputs: vi.fn(),
+  setContract: vi.fn(),
+  setStart: vi.fn(),
+  setWorkflowOutputBindings: vi.fn(),
   updateSetup: vi.fn(),
   setRoute: vi.fn(),
   validate: vi.fn(),

web/apps/console/src/workspace/authoring/WorkflowContractInspector.test.tsx

@@ -0,0 +1,98 @@
+import { cleanup, fireEvent, render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import type { AuthoringContractInventory } from "../domain/authoring-contract-models.js";
+import type { DraftWorkspace } from "../domain/draft-workspace-models.js";
+import type { DraftAuthoringController } from "./useDraftAuthoring.js";
+import { WorkflowContractInspector } from "./WorkflowContractInspector.js";
+
+afterEach(cleanup);
+
+const draft: DraftWorkspace = {
+  workspaceId: "draft-report",
+  revision: 4,
+  title: "Report",
+  status: "invalid",
+  diagnostics: [],
+  summary: { name: "report", start: "read", stepCount: 2, routeCount: 0, steps: ["read", "render"] },
+  draft: {
+    input_schema: { type: "object", properties: { query: { type: "string" } } },
+    state_schema: { type: "object", properties: { report: { type: "string", reducer: "wf.std.replace" } } },
+    output_schema: { type: "object", properties: { report: { type: "string" } } },
+    outcomes: ["ok", "cancelled"],
+    output: [{ path: "state.report", target: "report" }],
+    steps: {},
+    routes: {},
+  },
+};
+
+const option = (path: string, origin: "workflow_input" | "workflow_state" | "runtime_context" | "workflow_output") => ({
+  path,
+  label: path,
+  origin,
+  schema: {},
+  required: false,
+  availability: "available" as const,
+  uses: ["workflow_output" as const],
+});
+
+const inventory: AuthoringContractInventory = {
+  workspaceId: "draft-report",
+  revision: 4,
+  selectedStepId: null,
+  readableSources: [option("input.query", "workflow_input"), option("state.report", "workflow_state"), option("context.request_id", "runtime_context")],
+  stepInputTargets: [],
+  stepOutputSources: [],
+  stateTargets: [],
+  workflowOutputTargets: [option("output.report", "workflow_output")],
+  entrySteps: [
+    { stepId: "read", label: "Read" },
+    { stepId: "render", label: "Render" },
+  ],
+  workflowOutcomes: ["ok", "cancelled"],
+  warnings: [],
+};
+
+const controller = {
+  draft,
+  selection: { kind: "contract", contract: "input" },
+  insertionContext: null,
+  dirty: false,
+  phase: "idle",
+  message: null,
+  resetGeneration: 0,
+  preservedCapabilityForm: null,
+  addCapability: vi.fn(), updateCapability: vi.fn(), setStepInputs: vi.fn(), setStepOutputs: vi.fn(),
+  setContract: vi.fn(), setStart: vi.fn(), setWorkflowOutputBindings: vi.fn(),
+  updateSetup: vi.fn(), setRoute: vi.fn(), validate: vi.fn(), reload: vi.fn(), reapply: vi.fn(),
+  rememberCapabilityForm: vi.fn(), rememberRouteForm: vi.fn(), select: vi.fn(), markDirty: vi.fn(),
+} satisfies DraftAuthoringController;
+
+describe("WorkflowContractInspector", () => {
+  it("edits the input schema and entry step from inventory", async () => {
+    const user = userEvent.setup();
+    render(<WorkflowContractInspector contract="input" controller={controller} draft={draft} inventory={inventory} />);
+
+    expect(screen.getByRole("textbox", { name: "Field name" })).toHaveValue("query");
+    await user.selectOptions(screen.getByRole("combobox", { name: "Entry step" }), "render");
+    await user.click(screen.getByRole("button", { name: "Save entry step" }));
+    expect(controller.setStart).toHaveBeenCalledWith("render");
+  });
+
+  it("offers output sources without presenting runtime context as a normal choice", () => {
+    render(<WorkflowContractInspector contract="output" controller={controller} draft={draft} inventory={inventory} />);
+
+    expect(screen.getByRole("button", { name: /state\.report/i })).toBeInTheDocument();
+    expect(screen.queryByRole("button", { name: /context\.request_id/i })).not.toBeInTheDocument();
+    expect(screen.getByRole("button", { name: "Save output bindings" })).toBeInTheDocument();
+  });
+
+  it("submits ordered, unique, non-blank outcomes", async () => {
+    const user = userEvent.setup();
+    render(<WorkflowContractInspector contract="outcomes" controller={controller} draft={draft} inventory={inventory} />);
+
+    fireEvent.change(screen.getByRole("textbox", { name: "Outcome 2" }), { target: { value: "ok" } });
+    await user.click(screen.getByRole("button", { name: "Save outcomes" }));
+    expect(controller.setContract).toHaveBeenCalledWith({ outcomes: ["ok"] });
+  });
+});

web/apps/console/src/workspace/authoring/WorkflowContractInspector.tsx

@@ -0,0 +1,177 @@
+import { useRef, useState, type FormEvent } from "react";
+import type { AuthoringContractInventory } from "../domain/authoring-contract-models.js";
+import type { DraftWorkspace, InputBinding, JsonObject } from "../domain/draft-workspace-models.js";
+import { AuthoringPathPicker } from "./AuthoringPathPicker.js";
+import { WorkflowSchemaFieldsForm } from "./WorkflowSchemaFieldsForm.js";
+import { normalizeOutcomes, type WorkflowContractKind } from "./workflow-contract-editor.js";
+import type { DraftAuthoringController } from "./useDraftAuthoring.js";
+
+type WorkflowContractInspectorProps = {
+  readonly contract: WorkflowContractKind;
+  readonly controller: DraftAuthoringController;
+  readonly draft: DraftWorkspace;
+  readonly inventory: AuthoringContractInventory | null;
+};
+
+type OutputRow = {
+  readonly id: string;
+  readonly kind: "path" | "value";
+  readonly source: string;
+  readonly value: string;
+  readonly target: string;
+};
+
+const isObject = (value: unknown): value is JsonObject =>
+  typeof value === "object" && value !== null && !Array.isArray(value);
+
+const draftObject = (draft: DraftWorkspace): JsonObject => isObject(draft.draft) ? draft.draft : {};
+
+const pathText = (value: unknown): string => {
+  if (typeof value === "string") return value;
+  if (!isObject(value) || !Array.isArray(value.parts) || typeof value.root !== "string") return "";
+  return [value.root, ...value.parts.map(String)].join(".");
+};
+
+const outputRows = (draft: DraftWorkspace): ReadonlyArray<OutputRow> => {
+  const raw = draftObject(draft).output;
+  if (!Array.isArray(raw)) return [];
+  const rows: OutputRow[] = [];
+  raw.forEach((item, index) => {
+    if (!isObject(item)) return;
+    const target = pathText(item.target);
+    if ("path" in item) {
+      rows.push({ id: `output-${index}`, kind: "path", source: pathText(item.path), value: "", target });
+      return;
+    }
+    if ("value" in item) {
+      rows.push({ id: `output-${index}`, kind: "value", source: "", value: JSON.stringify(item.value) ?? "null", target });
+    }
+  });
+  return rows;
+};
+
+const parseLiteral = (value: string): unknown => {
+  try {
+    return JSON.parse(value);
+  } catch {
+    return value;
+  }
+};
+
+const schemaFor = (draft: DraftWorkspace, contract: "input" | "state" | "output"): unknown =>
+  draftObject(draft)[`${contract}_schema`];
+
+const contractPatch = (
+  contract: "input" | "state" | "output",
+  schema: JsonObject,
+) => contract === "input"
+  ? { inputSchema: schema }
+  : contract === "state"
+    ? { stateSchema: schema }
+    : { outputSchema: schema };
+
+const StatusTruth = ({ controller, draft }: Pick<WorkflowContractInspectorProps, "controller" | "draft">) => (
+  <div className="workflow-contract-inspector__status" aria-live="polite">
+    {controller.dirty && controller.phase === "idle" && <span>Unsaved changes</span>}
+    {controller.phase === "saving" && <span>Saving canonical draft...</span>}
+    {draft.status === "invalid" && controller.phase === "idle" && <span>Saved with validation diagnostics</span>}
+  </div>
+);
+
+const EntryStepForm = ({ controller, draft, inventory }: WorkflowContractInspectorProps) => {
+  const [stepId, setStepId] = useState(() => pathText(draft.summary.start));
+  return (
+    <form className="workflow-contract-entry" onSubmit={(event) => {
+      event.preventDefault();
+      if (stepId !== "") void controller.setStart(stepId);
+    }}>
+      <label>
+        Entry step
+        <select onChange={(event) => { setStepId(event.target.value); controller.markDirty(); }} value={stepId}>
+          <option value="">Choose a step</option>
+          {(inventory?.entrySteps ?? []).map((step) => <option key={step.stepId} value={step.stepId}>{step.label} ({step.stepId})</option>)}
+        </select>
+      </label>
+      <button disabled={stepId === ""} type="submit">Save entry step</button>
+    </form>
+  );
+};
+
+const WorkflowOutputBindingsForm = ({ controller, draft, inventory }: WorkflowContractInspectorProps) => {
+  const [rows, setRows] = useState(() => outputRows(draft));
+  const nextId = useRef(rows.length);
+  const sources = (inventory?.readableSources ?? []).filter(
+    (option) => option.origin !== "runtime_context" && option.uses.includes("workflow_output"),
+  );
+  const targets = inventory?.workflowOutputTargets ?? [];
+  const update = (id: string, patch: Partial<OutputRow>): void => {
+    setRows((current) => current.map((row) => row.id === id ? { ...row, ...patch } : row));
+    controller.markDirty();
+  };
+  const submit = (event: FormEvent<HTMLFormElement>): void => {
+    event.preventDefault();
+    const bindings: InputBinding[] = rows.filter((row) => row.target.trim() !== "").map((row) => row.kind === "path"
+      ? { path: row.source, target: row.target }
+      : { value: parseLiteral(row.value), target: row.target });
+    void controller.setWorkflowOutputBindings(bindings);
+  };
+  return (
+    <form className="workflow-output-bindings" onSubmit={submit}>
+      <h3>Final output bindings</h3>
+      {rows.map((row, index) => (
+        <fieldset key={row.id}>
+          <legend>Output binding {index + 1}</legend>
+          <label>Source kind<select value={row.kind} onChange={(event) => update(row.id, { kind: event.target.value as OutputRow["kind"] })}><option value="path">Path</option><option value="value">Literal</option></select></label>
+          {row.kind === "path" ? (
+            <AuthoringPathPicker allowCustom label={`Source for output binding ${index + 1}`} onChange={(source) => update(row.id, { source })} options={sources} uses="workflow_output" value={row.source} />
+          ) : <label>Literal JSON<textarea value={row.value} onChange={(event) => update(row.id, { value: event.target.value })} /></label>}
+          <label>Output target<select value={row.target} onChange={(event) => update(row.id, { target: event.target.value })}><option value="">Choose output field</option>{targets.map((target) => <option key={target.path} value={target.path.replace(/^output\./, "")}>{target.label}</option>)}</select></label>
+          <div className="workflow-output-bindings__actions">
+            <button disabled={index === 0} onClick={() => setRows((current) => { const copy = [...current]; [copy[index - 1], copy[index]] = [copy[index]!, copy[index - 1]!]; return copy; })} type="button">Move up</button>
+            <button onClick={() => { setRows((current) => current.filter((item) => item.id !== row.id)); controller.markDirty(); }} type="button">Remove binding</button>
+          </div>
+        </fieldset>
+      ))}
+      <button onClick={() => { setRows((current) => [...current, { id: `output-new-${nextId.current++}`, kind: "path", source: "", value: "", target: "" }]); controller.markDirty(); }} type="button">Add output binding</button>
+      <button type="submit">Save output bindings</button>
+    </form>
+  );
+};
+
+const OutcomesForm = ({ controller, draft }: WorkflowContractInspectorProps) => {
+  const raw = draftObject(draft).outcomes;
+  const [rows, setRows] = useState<ReadonlyArray<string>>(() => Array.isArray(raw) ? raw.map(String) : []);
+  return (
+    <form className="workflow-outcomes-form" onSubmit={(event) => { event.preventDefault(); void controller.setContract({ outcomes: normalizeOutcomes(rows) }); }}>
+      {rows.map((outcome, index) => <div key={index}><label>Outcome {index + 1}<input value={outcome} onChange={(event) => { setRows((current) => current.map((item, itemIndex) => itemIndex === index ? event.target.value : item)); controller.markDirty(); }} /></label><button onClick={() => setRows((current) => current.filter((_, itemIndex) => itemIndex !== index))} type="button">Remove</button></div>)}
+      <button onClick={() => { setRows((current) => [...current, ""]); controller.markDirty(); }} type="button">Add outcome</button>
+      <button type="submit">Save outcomes</button>
+    </form>
+  );
+};
+
+export const WorkflowContractInspector = (props: WorkflowContractInspectorProps) => {
+  const { contract, controller, draft } = props;
+  const title = contract.charAt(0).toUpperCase() + contract.slice(1);
+  return (
+    <section aria-labelledby="workflow-contract-heading" className="workflow-contract-inspector">
+      <p className="workspace-route-pending__eyebrow">Workflow projection</p>
+      <h2 id="workflow-contract-heading">{title} contract</h2>
+      <StatusTruth controller={controller} draft={draft} />
+      {contract === "outcomes" ? <OutcomesForm {...props} /> : (
+        <>
+          <WorkflowSchemaFieldsForm
+            contract={contract}
+            key={`${contract}:${controller.resetGeneration}`}
+            onDirtyChange={controller.markDirty}
+            onSubmit={(schema) => controller.setContract(contractPatch(contract, schema))}
+            schema={schemaFor(draft, contract)}
+          />
+          {contract === "input" && <EntryStepForm {...props} />}
+          {contract === "state" && <p className="workflow-contract-inspector__impact">Removing state fields can invalidate existing bindings. Review diagnostics after saving.</p>}
+          {contract === "output" && <WorkflowOutputBindingsForm {...props} />}
+        </>
+      )}
+    </section>
+  );
+};

web/apps/console/src/workspace/authoring/WorkflowSchemaFieldsForm.test.tsx

@@ -0,0 +1,82 @@
+import { cleanup, render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { WorkflowSchemaFieldsForm } from "./WorkflowSchemaFieldsForm.js";
+
+afterEach(cleanup);
+
+describe("WorkflowSchemaFieldsForm", () => {
+  it("edits nested fields without exposing state metadata on input", async () => {
+    const user = userEvent.setup();
+    const onSubmit = vi.fn();
+    render(
+      <WorkflowSchemaFieldsForm
+        contract="input"
+        onSubmit={onSubmit}
+        schema={{
+          type: "object",
+          properties: {
+            request: {
+              type: "object",
+              properties: { title: { type: "string" } },
+            },
+          },
+        }}
+      />,
+    );
+
+    expect(screen.queryByRole("textbox", { name: "Reducer" })).toBeNull();
+    const descriptions = screen.getAllByRole("textbox", { name: "Description" });
+    await user.type(descriptions[1]!, "Report title");
+    await user.click(screen.getByRole("button", { name: "Save input schema" }));
+    expect(onSubmit).toHaveBeenCalledWith(
+      expect.objectContaining({
+        properties: expect.objectContaining({
+          request: expect.objectContaining({
+            properties: { title: { type: "string", description: "Report title" } },
+          }),
+        }),
+      }),
+    );
+  });
+
+  it("shows state default and reducer controls", () => {
+    render(
+      <WorkflowSchemaFieldsForm
+        contract="state"
+        onSubmit={vi.fn()}
+        schema={{
+          type: "object",
+          properties: { count: { type: "integer", default: 0, reducer: "wf.std.add" } },
+        }}
+      />,
+    );
+
+    expect(screen.getByRole("textbox", { name: "Reducer" })).toHaveValue("wf.std.add");
+    expect(screen.getByRole("textbox", { name: "Default JSON" })).toHaveValue("0");
+  });
+
+  it("keeps unsupported fields visible until explicitly removed", async () => {
+    const user = userEvent.setup();
+    const onSubmit = vi.fn();
+    render(
+      <WorkflowSchemaFieldsForm
+        contract="output"
+        onSubmit={onSubmit}
+        schema={{
+          type: "object",
+          properties: { choice: { oneOf: [{ type: "string" }, { type: "number" }] } },
+        }}
+      />,
+    );
+
+    expect(screen.getByRole("group", { name: "Unsupported field choice" })).toBeInTheDocument();
+    await user.click(screen.getByRole("button", { name: "Save output schema" }));
+    expect(onSubmit).toHaveBeenLastCalledWith(
+      expect.objectContaining({ properties: { choice: expect.objectContaining({ oneOf: expect.any(Array) }) } }),
+    );
+    await user.click(screen.getByRole("button", { name: "Remove unsupported field" }));
+    await user.click(screen.getByRole("button", { name: "Save output schema" }));
+    expect(onSubmit).toHaveBeenLastCalledWith(expect.objectContaining({ properties: {} }));
+  });
+});

web/apps/console/src/workspace/authoring/WorkflowSchemaFieldsForm.tsx

@@ -0,0 +1,271 @@
+import { useRef, useState, type FormEvent } from "react";
+import { formatBoundedJson } from "../domain/format-bounded-json.js";
+import type { JsonObject } from "../domain/draft-workspace-models.js";
+import {
+  projectWorkflowSchema,
+  serializeWorkflowSchema,
+  type WorkflowContractKind,
+  type WorkflowSchemaFieldRow,
+  type WorkflowSchemaFieldType,
+} from "./workflow-contract-editor.js";
+
+type WorkflowSchemaFieldsFormProps = {
+  readonly contract: Extract<WorkflowContractKind, "input" | "state" | "output">;
+  readonly schema: unknown;
+  readonly onSubmit: (schema: JsonObject) => void | Promise<void>;
+  readonly onDirtyChange?: (dirty: boolean) => void;
+};
+
+const FIELD_TYPES: ReadonlyArray<WorkflowSchemaFieldType> = [
+  "value",
+  "string",
+  "integer",
+  "number",
+  "boolean",
+  "object",
+  "array",
+];
+
+const updateTree = (
+  rows: ReadonlyArray<WorkflowSchemaFieldRow>,
+  id: string,
+  update: (row: WorkflowSchemaFieldRow) => WorkflowSchemaFieldRow,
+): ReadonlyArray<WorkflowSchemaFieldRow> => rows.map((row) => {
+  if (row.id === id) return update(row);
+  const children = updateTree(row.children, id, update);
+  const itemRows = row.item === null ? [] : updateTree([row.item], id, update);
+  const item = itemRows[0] ?? null;
+  return children === row.children && item === row.item ? row : { ...row, children, item };
+});
+
+const removeFromTree = (
+  rows: ReadonlyArray<WorkflowSchemaFieldRow>,
+  id: string,
+): ReadonlyArray<WorkflowSchemaFieldRow> => rows
+  .filter((row) => row.id !== id)
+  .map((row) => ({
+    ...row,
+    children: removeFromTree(row.children, id),
+    item: row.item === null ? null : removeFromTree([row.item], id)[0] ?? null,
+  }));
+
+const emptyRow = (id: string, name = "field"): WorkflowSchemaFieldRow => ({
+  id,
+  name,
+  type: "string",
+  required: false,
+  description: "",
+  hasDefault: false,
+  defaultValue: undefined,
+  reducer: undefined,
+  children: [],
+  item: null,
+  unsupportedReason: null,
+  raw: {},
+});
+
+const parseJsonValue = (value: string): unknown => {
+  if (value.trim() === "") return undefined;
+  try {
+    return JSON.parse(value);
+  } catch {
+    return value;
+  }
+};
+
+type FieldEditorProps = {
+  readonly row: WorkflowSchemaFieldRow;
+  readonly state: boolean;
+  readonly onUpdate: (id: string, update: (row: WorkflowSchemaFieldRow) => WorkflowSchemaFieldRow) => void;
+  readonly onRemove: (id: string) => void;
+  readonly createId: () => string;
+};
+
+const FieldEditor = ({ row, state, onUpdate, onRemove, createId }: FieldEditorProps) => {
+  if (row.unsupportedReason !== null) {
+    return (
+      <fieldset aria-label={`Unsupported field ${row.name}`} className="workflow-schema-field workflow-schema-field--unsupported">
+        <legend>{row.name}</legend>
+        <p>{row.unsupportedReason}</p>
+        <details>
+          <summary>Advanced field details</summary>
+          <pre role="region" tabIndex={0}>{formatBoundedJson(row.raw)}</pre>
+        </details>
+        <button onClick={() => onRemove(row.id)} type="button">Remove unsupported field</button>
+      </fieldset>
+    );
+  }
+  const set = (patch: Partial<WorkflowSchemaFieldRow>): void =>
+    onUpdate(row.id, (current) => ({ ...current, ...patch }));
+  return (
+    <fieldset aria-label={`Schema field ${row.name}`} className="workflow-schema-field">
+      <legend>{row.name || "Unnamed field"}</legend>
+      <label>
+        Field name
+        <input onChange={(event) => set({ name: event.target.value })} value={row.name} />
+      </label>
+      <label>
+        Type
+        <select
+          onChange={(event) => {
+            const type = event.target.value as WorkflowSchemaFieldType;
+            set({
+              type,
+              children: type === "object" ? row.children : [],
+              item: type === "array" ? row.item ?? emptyRow(`${row.id}.items`, "item") : null,
+            });
+          }}
+          value={row.type}
+        >
+          {FIELD_TYPES.map((type) => <option key={type} value={type}>{type}</option>)}
+        </select>
+      </label>
+      <label>
+        <input
+          checked={row.required}
+          onChange={(event) => set({ required: event.target.checked })}
+          type="checkbox"
+        />
+        Required
+      </label>
+      <label>
+        Description
+        <input onChange={(event) => set({ description: event.target.value })} value={row.description} />
+      </label>
+      {state && (
+        <div className="workflow-schema-field__state">
+          <label>
+            <input
+              checked={row.hasDefault}
+              onChange={(event) => set({ hasDefault: event.target.checked })}
+              type="checkbox"
+            />
+            Has default
+          </label>
+          {row.hasDefault && (
+            <label>
+              Default JSON
+              <textarea
+                onChange={(event) => set({ defaultValue: parseJsonValue(event.target.value) })}
+                value={JSON.stringify(row.defaultValue) ?? ""}
+              />
+            </label>
+          )}
+          <label>
+            Reducer
+            <input
+              onChange={(event) => set({ reducer: parseJsonValue(event.target.value) })}
+              placeholder="wf.std.replace"
+              value={typeof row.reducer === "string" ? row.reducer : JSON.stringify(row.reducer) ?? ""}
+            />
+          </label>
+        </div>
+      )}
+      {row.type === "object" && (
+        <div className="workflow-schema-field__children">
+          <h4>Object fields</h4>
+          {row.children.map((child) => (
+            <FieldEditor
+              createId={createId}
+              key={child.id}
+              onRemove={onRemove}
+              onUpdate={onUpdate}
+              row={child}
+              state={state}
+            />
+          ))}
+          <button
+            onClick={() => onUpdate(row.id, (current) => ({
+              ...current,
+              children: [...current.children, emptyRow(createId())],
+            }))}
+            type="button"
+          >
+            Add nested field
+          </button>
+        </div>
+      )}
+      {row.type === "array" && row.item !== null && (
+        <div className="workflow-schema-field__children">
+          <h4>Array item</h4>
+          <FieldEditor
+            createId={createId}
+            onRemove={() => set({ item: emptyRow(`${row.id}.items`, "item") })}
+            onUpdate={onUpdate}
+            row={row.item}
+            state={state}
+          />
+        </div>
+      )}
+      <button onClick={() => onRemove(row.id)} type="button">Remove field</button>
+    </fieldset>
+  );
+};
+
+export const WorkflowSchemaFieldsForm = ({
+  contract,
+  schema,
+  onSubmit,
+  onDirtyChange,
+}: WorkflowSchemaFieldsFormProps) => {
+  const [projection] = useState(() => projectWorkflowSchema(schema));
+  const [rows, setRows] = useState(projection.rows);
+  const nextId = useRef(0);
+  const markDirty = (): void => onDirtyChange?.(true);
+  const createId = (): string => `new-field-${nextId.current++}`;
+  const update = (
+    id: string,
+    updater: (row: WorkflowSchemaFieldRow) => WorkflowSchemaFieldRow,
+  ): void => {
+    setRows((current) => updateTree(current, id, updater));
+    markDirty();
+  };
+  const remove = (id: string): void => {
+    setRows((current) => removeFromTree(current, id));
+    markDirty();
+  };
+  const submit = (event: FormEvent<HTMLFormElement>): void => {
+    event.preventDefault();
+    void Promise.resolve(
+      onSubmit(serializeWorkflowSchema(projection, rows, { state: contract === "state" })),
+    ).catch(() => undefined);
+  };
+
+  return (
+    <form className="workflow-schema-fields-form" noValidate onSubmit={submit}>
+      {projection.rootUnsupportedReason !== null ? (
+        <section aria-label="Unsupported root schema" className="workflow-schema-field--unsupported">
+          <p>{projection.rootUnsupportedReason}</p>
+          <details>
+            <summary>Advanced schema details</summary>
+            <pre role="region" tabIndex={0}>{formatBoundedJson(projection.schema)}</pre>
+          </details>
+        </section>
+      ) : (
+        <>
+          {rows.length === 0 && <p>No fields declared.</p>}
+          {rows.map((row) => (
+            <FieldEditor
+              createId={createId}
+              key={row.id}
+              onRemove={remove}
+              onUpdate={update}
+              row={row}
+              state={contract === "state"}
+            />
+          ))}
+          <button
+            onClick={() => {
+              setRows((current) => [...current, emptyRow(createId())]);
+              markDirty();
+            }}
+            type="button"
+          >
+            Add field
+          </button>
+          <button type="submit">Save {contract} schema</button>
+        </>
+      )}
+    </form>
+  );
+};

web/apps/console/src/workspace/authoring/useDraftAuthoring.test.tsx

@@ -64,6 +64,9 @@ const addCapabilityStep = vi.fn<DraftAuthoringClient["addCapabilityStep"]>();
 const updateCapabilityStep = vi.fn<DraftAuthoringClient["updateCapabilityStep"]>();
 const setStepInputBindings = vi.fn<DraftAuthoringClient["setStepInputBindings"]>();
 const setStepOutputBindings = vi.fn<DraftAuthoringClient["setStepOutputBindings"]>();
+const setContract = vi.fn<DraftAuthoringClient["setContract"]>();
+const setStart = vi.fn<DraftAuthoringClient["setStart"]>();
+const setWorkflowOutputBindings = vi.fn<DraftAuthoringClient["setWorkflowOutputBindings"]>();
 const setRoute = vi.fn<DraftAuthoringClient["setRoute"]>();
 const validate = vi.fn<DraftAuthoringClient["validate"]>();
 const list = vi.fn<DraftWorkspaceClient["list"]>();
@@ -75,6 +78,9 @@ const authoringClient = {
   updateCapabilityStep,
   setStepInputBindings,
   setStepOutputBindings,
+  setContract,
+  setStart,
+  setWorkflowOutputBindings,
   setRoute,
   validate,
 } satisfies DraftAuthoringClient;
@@ -121,6 +127,62 @@ beforeEach(() => {
 });
 
 describe("useDraftAuthoring", () => {
+  it("sets a focused contract and reapplies its immutable snapshot after conflict", async () => {
+    const initial = workspace({ revision: 3 });
+    const conflict = workspace({ revision: 3, status: "conflict" });
+    const reloaded = workspace({ revision: 4, status: "invalid" });
+    const canonical = workspace({ revision: 5 });
+    const inputSchema = { type: "object", properties: { query: { type: "string" } } };
+    setContract.mockResolvedValueOnce(conflict).mockResolvedValueOnce(canonical);
+    load.mockResolvedValue(reloaded);
+    const { result } = renderHook(() => useDraftAuthoring({
+      draft: initial,
+      initialSelection: { kind: "contract", contract: "input" },
+    }));
+
+    await act(async () => result.current.setContract({ inputSchema }));
+    inputSchema.properties.query.type = "number";
+    await act(async () => result.current.reload());
+    await act(async () => result.current.reapply());
+
+    expect(setContract).toHaveBeenLastCalledWith({
+      workspaceId: "draft-report",
+      revision: 4,
+      inputSchema: { type: "object", properties: { query: { type: "string" } } },
+    });
+    expect(result.current.selection).toEqual({ kind: "contract", contract: "input" });
+  });
+
+  it("sets the entry step through the focused start operation", async () => {
+    setStart.mockResolvedValue(workspace({ revision: 4 }));
+    const { result } = renderHook(() => useDraftAuthoring({ draft: workspace() }));
+
+    await act(async () => result.current.setStart("render"));
+
+    expect(setStart).toHaveBeenCalledWith({
+      workspaceId: "draft-report",
+      revision: 3,
+      stepId: "render",
+    });
+  });
+
+  it("sets ordered workflow output bindings through the focused operation", async () => {
+    setWorkflowOutputBindings.mockResolvedValue(workspace({ revision: 4 }));
+    const bindings: InputBinding[] = [
+      { path: "state.report", target: "report" },
+      { value: "markdown", target: "format" },
+    ];
+    const { result } = renderHook(() => useDraftAuthoring({ draft: workspace() }));
+
+    await act(async () => result.current.setWorkflowOutputBindings(bindings));
+
+    expect(setWorkflowOutputBindings).toHaveBeenCalledWith({
+      workspaceId: "draft-report",
+      revision: 3,
+      bindings,
+    });
+  });
+
   it("adds an unconnected capability without inventing route information", async () => {
     const initial = workspace();
     const canonical = workspace({

web/apps/console/src/workspace/authoring/useDraftAuthoring.ts

@@ -11,6 +11,7 @@ import {
 } from "../domain/draft-workspace-client.js";
 import type {
   DraftWorkspace,
+  InputBinding,
   OutputBinding,
   StepInputBinding,
 } from "../domain/draft-workspace-models.js";
@@ -22,6 +23,7 @@ import {
   type WorkbenchSelection,
 } from "./authoring-graph.js";
 import type { CapabilitySetupPatch } from "./selected-step-dataflow.js";
+import { copyJson, type WorkflowContractPatch } from "./workflow-contract-editor.js";
 
 export type DraftAuthoringPhase = "idle" | "saving" | "conflict" | "error";
 
@@ -38,6 +40,9 @@ export interface DraftAuthoringController {
   readonly updateCapability: (input: CapabilityNodeFormValue) => Promise<void>;
   readonly setStepInputs: (bindings: ReadonlyArray<StepInputBinding>) => Promise<void>;
   readonly setStepOutputs: (bindings: ReadonlyArray<OutputBinding>) => Promise<void>;
+  readonly setContract: (patch: WorkflowContractPatch) => Promise<void>;
+  readonly setStart: (stepId: string) => Promise<void>;
+  readonly setWorkflowOutputBindings: (bindings: ReadonlyArray<InputBinding>) => Promise<void>;
   readonly updateSetup: (patch: CapabilitySetupPatch) => Promise<void>;
   readonly setRoute: (input: RouteFormValue) => Promise<void>;
   readonly validate: () => Promise<void>;
@@ -108,6 +113,9 @@ type LastSubmission =
       readonly targetStepId: string;
       readonly bindings: ReadonlyArray<OutputBinding>;
     }
+  | { readonly kind: "contract"; readonly patch: WorkflowContractPatch }
+  | { readonly kind: "start"; readonly stepId: string }
+  | { readonly kind: "workflow_outputs"; readonly bindings: ReadonlyArray<InputBinding> }
   | null;
 
 type MutationOptions = {
@@ -183,6 +191,42 @@ const copyOutputBindings = (
   bindings: ReadonlyArray<OutputBinding>,
 ): ReadonlyArray<OutputBinding> => bindings.map(copyOutputBinding);
 
+const copyWorkflowOutputBindings = (
+  bindings: ReadonlyArray<InputBinding>,
+): ReadonlyArray<InputBinding> => bindings.map((binding) => (
+  "path" in binding
+    ? {
+        path:
+          typeof binding.path === "string"
+            ? binding.path
+            : { root: binding.path.root, parts: [...binding.path.parts] },
+        target:
+          typeof binding.target === "string"
+            ? binding.target
+            : { root: binding.target.root, parts: [...binding.target.parts] },
+      }
+    : {
+        value: copyJson(binding.value),
+        target:
+          typeof binding.target === "string"
+            ? binding.target
+            : { root: binding.target.root, parts: [...binding.target.parts] },
+      }
+));
+
+const copyContractPatch = (patch: WorkflowContractPatch): WorkflowContractPatch => ({
+  ...(patch.inputSchema !== undefined
+    ? { inputSchema: copyJson(patch.inputSchema) as typeof patch.inputSchema }
+    : {}),
+  ...(patch.stateSchema !== undefined
+    ? { stateSchema: copyJson(patch.stateSchema) as typeof patch.stateSchema }
+    : {}),
+  ...(patch.outputSchema !== undefined
+    ? { outputSchema: copyJson(patch.outputSchema) as typeof patch.outputSchema }
+    : {}),
+  ...(patch.outcomes !== undefined ? { outcomes: [...patch.outcomes] } : {}),
+});
+
 const copySetupPatch = (patch: CapabilitySetupPatch): CapabilitySetupPatch => ({
   ...(patch.description !== undefined ? { description: patch.description } : {}),
   ...(patch.retry !== undefined ? { retry: patch.retry } : {}),
@@ -624,6 +668,66 @@ export const useDraftAuthoring = ({
     [missingSelectedStep, selectedStepId, submitStepOutputs],
   );
 
+  const submitContract = useCallback(
+    (patch: WorkflowContractPatch): Promise<void> => {
+      const submittedPatch = copyContractPatch(patch);
+      return runMutation(
+        "contract",
+        submittedPatch,
+        (client, requestDraft) => client.setContract({
+          workspaceId: requestDraft.workspaceId,
+          revision: requestDraft.revision,
+          ...submittedPatch,
+        }),
+        { submission: { kind: "contract", patch: submittedPatch } },
+      );
+    },
+    [runMutation],
+  );
+
+  const setContract = useCallback(
+    (patch: WorkflowContractPatch): Promise<void> => submitContract(patch),
+    [submitContract],
+  );
+
+  const submitStart = useCallback(
+    (stepId: string): Promise<void> => runMutation(
+      "start",
+      { stepId },
+      (client, requestDraft) => client.setStart({
+        workspaceId: requestDraft.workspaceId,
+        revision: requestDraft.revision,
+        stepId,
+      }),
+      { submission: { kind: "start", stepId } },
+    ),
+    [runMutation],
+  );
+
+  const setStart = useCallback((stepId: string): Promise<void> => submitStart(stepId), [submitStart]);
+
+  const submitWorkflowOutputBindings = useCallback(
+    (bindings: ReadonlyArray<InputBinding>): Promise<void> => {
+      const submittedBindings = copyWorkflowOutputBindings(bindings);
+      return runMutation(
+        "workflow_outputs",
+        submittedBindings,
+        (client, requestDraft) => client.setWorkflowOutputBindings({
+          workspaceId: requestDraft.workspaceId,
+          revision: requestDraft.revision,
+          bindings: submittedBindings,
+        }),
+        { submission: { kind: "workflow_outputs", bindings: submittedBindings } },
+      );
+    },
+    [runMutation],
+  );
+
+  const setWorkflowOutputBindings = useCallback(
+    (bindings: ReadonlyArray<InputBinding>): Promise<void> => submitWorkflowOutputBindings(bindings),
+    [submitWorkflowOutputBindings],
+  );
+
   const setRoute = useCallback(
     (input: RouteFormValue): Promise<void> => {
       return runMutation(
@@ -740,7 +844,10 @@ export const useDraftAuthoring = ({
     if (last.kind === "route") return setRoute(last.input);
     if (last.kind === "setup") return submitSetup(last.targetStepId, last.patch, true);
     if (last.kind === "inputs") return submitStepInputs(last.targetStepId, last.bindings, true);
-    return submitStepOutputs(last.targetStepId, last.bindings, true);
+    if (last.kind === "outputs") return submitStepOutputs(last.targetStepId, last.bindings, true);
+    if (last.kind === "contract") return submitContract(last.patch);
+    if (last.kind === "start") return submitStart(last.stepId);
+    return submitWorkflowOutputBindings(last.bindings);
   }, [
     setRoute,
     submitCapabilityAdd,
@@ -748,6 +855,9 @@ export const useDraftAuthoring = ({
     submitSetup,
     submitStepInputs,
     submitStepOutputs,
+    submitContract,
+    submitStart,
+    submitWorkflowOutputBindings,
   ]);
 
   const rememberCapabilityForm = useCallback(
@@ -792,6 +902,9 @@ export const useDraftAuthoring = ({
     updateCapability,
     setStepInputs,
     setStepOutputs,
+    setContract,
+    setStart,
+    setWorkflowOutputBindings,
     updateSetup,
     setRoute,
     validate,

web/apps/console/src/workspace/authoring/workflow-contract-editor.test.ts

@@ -0,0 +1,81 @@
+import { describe, expect, it } from "vitest";
+import {
+  normalizeOutcomes,
+  projectWorkflowSchema,
+  serializeWorkflowSchema,
+} from "./workflow-contract-editor.js";
+
+describe("workflow contract schema projection", () => {
+  it("round-trips nested fields while preserving root and unknown metadata", () => {
+    const schema = {
+      type: "object",
+      title: "Input",
+      $defs: { Tag: { type: "string" } },
+      "x-root": { kept: true },
+      required: ["request"],
+      properties: {
+        request: {
+          type: "object",
+          description: "Request details",
+          "x-field": "keep",
+          required: ["title"],
+          properties: {
+            title: { type: "string" },
+            tags: { type: "array", items: { type: "string", minLength: 1 } },
+          },
+        },
+      },
+    };
+    const projection = projectWorkflowSchema(schema);
+
+    expect(projection.rows[0]).toMatchObject({
+      name: "request",
+      type: "object",
+      required: true,
+      description: "Request details",
+    });
+    expect(projection.rows[0]?.children[1]?.item).toMatchObject({ type: "string" });
+    expect(serializeWorkflowSchema(projection, projection.rows)).toEqual(schema);
+  });
+
+  it("projects and preserves state defaults and reducer references", () => {
+    const schema = {
+      type: "object",
+      properties: {
+        issues: {
+          type: "array",
+          items: { type: "string" },
+          default: [],
+          reducer: { capability: "wf.std.append", config: { unique: true } },
+        },
+      },
+    };
+    const projection = projectWorkflowSchema(schema);
+    expect(projection.rows[0]).toMatchObject({ hasDefault: true, defaultValue: [] });
+    expect(serializeWorkflowSchema(projection, projection.rows, { state: true })).toEqual(schema);
+  });
+
+  it("keeps unsupported composition intact while another field changes", () => {
+    const schema = {
+      type: "object",
+      properties: {
+        choice: { oneOf: [{ type: "string" }, { type: "number" }], "x-note": "keep" },
+        title: { type: "string" },
+      },
+    };
+    const projection = projectWorkflowSchema(schema);
+    const choice = projection.rows[0];
+    expect(choice?.unsupportedReason).toMatch(/oneOf/);
+    const rows = projection.rows.map((row) =>
+      row.name === "title" ? { ...row, description: "Updated" } : row,
+    );
+    expect(serializeWorkflowSchema(projection, rows).properties).toEqual({
+      choice: schema.properties.choice,
+      title: { type: "string", description: "Updated" },
+    });
+  });
+
+  it("normalizes ordered outcomes without blanks or duplicates", () => {
+    expect(normalizeOutcomes(["ok", " ", "cancelled", "ok"])).toEqual(["ok", "cancelled"]);
+  });
+});

web/apps/console/src/workspace/authoring/workflow-contract-editor.ts

@@ -0,0 +1,224 @@
+import type { JsonObject } from "../domain/draft-workspace-models.js";
+
+export type WorkflowContractKind = "input" | "state" | "output" | "outcomes";
+export type WorkflowSchemaFieldType =
+  | "value"
+  | "string"
+  | "integer"
+  | "number"
+  | "boolean"
+  | "object"
+  | "array";
+
+export type WorkflowSchemaFieldRow = {
+  readonly id: string;
+  readonly name: string;
+  readonly type: WorkflowSchemaFieldType;
+  readonly required: boolean;
+  readonly description: string;
+  readonly hasDefault: boolean;
+  readonly defaultValue: unknown;
+  readonly reducer: unknown;
+  readonly children: ReadonlyArray<WorkflowSchemaFieldRow>;
+  readonly item: WorkflowSchemaFieldRow | null;
+  readonly unsupportedReason: string | null;
+  readonly raw: JsonObject;
+};
+
+export type WorkflowSchemaProjection = {
+  readonly schema: JsonObject;
+  readonly rows: ReadonlyArray<WorkflowSchemaFieldRow>;
+  readonly rootUnsupportedReason: string | null;
+};
+
+export type WorkflowOutputBindingRow = {
+  readonly id: string;
+  readonly source: string;
+  readonly target: string;
+  readonly value?: unknown;
+};
+
+export type WorkflowContractPatch = {
+  readonly inputSchema?: JsonObject;
+  readonly stateSchema?: JsonObject;
+  readonly outputSchema?: JsonObject;
+  readonly outcomes?: ReadonlyArray<string>;
+};
+
+const MAX_DEPTH = 64;
+const COMPOSITION_KEYS = ["oneOf", "anyOf", "allOf", "not", "if", "then", "else"] as const;
+
+const isRecord = (value: unknown): value is JsonObject =>
+  typeof value === "object" && value !== null && !Array.isArray(value);
+
+export const copyJson = (value: unknown): unknown => {
+  if (Array.isArray(value)) return value.map(copyJson);
+  if (!isRecord(value)) return value;
+  return Object.fromEntries(Object.entries(value).map(([key, item]) => [key, copyJson(item)]));
+};
+
+const copyObject = (value: JsonObject): JsonObject => copyJson(value) as JsonObject;
+
+const unsupportedReason = (schema: JsonObject, depth: number): string | null => {
+  if (depth >= MAX_DEPTH) return "Schema editor depth limit exceeded.";
+  const composition = COMPOSITION_KEYS.find((key) => Object.hasOwn(schema, key));
+  if (composition !== undefined) {
+    return `The field uses ${composition}, which the focused editor cannot represent.`;
+  }
+  if (Object.hasOwn(schema, "$ref")) {
+    return "The field uses a reference, which remains available in Advanced details.";
+  }
+  const type = schema.type;
+  if (
+    type !== undefined &&
+    type !== "string" &&
+    type !== "integer" &&
+    type !== "number" &&
+    type !== "boolean" &&
+    type !== "object" &&
+    type !== "array"
+  ) return "The field type is not supported by the focused editor.";
+  return null;
+};
+
+const fieldType = (schema: JsonObject): WorkflowSchemaFieldType => {
+  const type = schema.type;
+  return type === "string" ||
+    type === "integer" ||
+    type === "number" ||
+    type === "boolean" ||
+    type === "object" ||
+    type === "array"
+    ? type
+    : "value";
+};
+
+const projectField = (
+  name: string,
+  schema: unknown,
+  required: boolean,
+  path: string,
+  depth: number,
+): WorkflowSchemaFieldRow => {
+  const raw = isRecord(schema) ? copyObject(schema) : {};
+  const reason = isRecord(schema)
+    ? unsupportedReason(schema, depth)
+    : "The field schema is not an object.";
+  const type = fieldType(raw);
+  const requiredNames = new Set(
+    Array.isArray(raw.required)
+      ? raw.required.filter((value): value is string => typeof value === "string")
+      : [],
+  );
+  const properties = isRecord(raw.properties) ? raw.properties : {};
+  const children = reason === null && type === "object"
+    ? Object.entries(properties).map(([childName, childSchema]) =>
+        projectField(
+          childName,
+          childSchema,
+          requiredNames.has(childName),
+          `${path}.${childName}`,
+          depth + 1,
+        ),
+      )
+    : [];
+  const item = reason === null && type === "array" && raw.items !== undefined
+    ? projectField("item", raw.items, true, `${path}.items`, depth + 1)
+    : null;
+  return {
+    id: path,
+    name,
+    type,
+    required,
+    description: typeof raw.description === "string" ? raw.description : "",
+    hasDefault: Object.hasOwn(raw, "default"),
+    defaultValue: copyJson(raw.default),
+    reducer: copyJson(raw.reducer),
+    children,
+    item,
+    unsupportedReason: reason,
+    raw,
+  };
+};
+
+export const projectWorkflowSchema = (schema: unknown): WorkflowSchemaProjection => {
+  const root = isRecord(schema) ? copyObject(schema) : { type: "object", properties: {} };
+  const rootReason = unsupportedReason(root, 0);
+  const requiredNames = new Set(
+    Array.isArray(root.required)
+      ? root.required.filter((value): value is string => typeof value === "string")
+      : [],
+  );
+  const properties = isRecord(root.properties) ? root.properties : {};
+  return {
+    schema: root,
+    rows: rootReason === null
+      ? Object.entries(properties).map(([name, field]) =>
+          projectField(name, field, requiredNames.has(name), name, 1),
+        )
+      : [],
+    rootUnsupportedReason: rootReason,
+  };
+};
+
+const serializeField = (row: WorkflowSchemaFieldRow, state: boolean): JsonObject => {
+  if (row.unsupportedReason !== null) return copyObject(row.raw);
+  const next = copyObject(row.raw);
+  if (row.type === "value") delete next.type;
+  else next.type = row.type;
+  if (row.description.trim() === "") delete next.description;
+  else next.description = row.description;
+
+  if (row.type === "object") {
+    next.properties = Object.fromEntries(
+      row.children.map((child) => [child.name, serializeField(child, state)]),
+    );
+    const required = row.children.filter((child) => child.required).map((child) => child.name);
+    if (required.length === 0) delete next.required;
+    else next.required = required;
+  } else {
+    delete next.properties;
+    delete next.required;
+  }
+  if (row.type === "array") {
+    next.items = row.item === null ? {} : serializeField(row.item, state);
+  } else {
+    delete next.items;
+  }
+  if (state) {
+    if (row.hasDefault) next.default = copyJson(row.defaultValue);
+    else delete next.default;
+    if (row.reducer === undefined || row.reducer === null || row.reducer === "") delete next.reducer;
+    else next.reducer = copyJson(row.reducer);
+  }
+  return next;
+};
+
+export const serializeWorkflowSchema = (
+  projection: WorkflowSchemaProjection,
+  rows: ReadonlyArray<WorkflowSchemaFieldRow>,
+  options: { readonly state?: boolean } = {},
+): JsonObject => {
+  if (projection.rootUnsupportedReason !== null) return copyObject(projection.schema);
+  const next = copyObject(projection.schema);
+  next.type = "object";
+  next.properties = Object.fromEntries(
+    rows.map((row) => [row.name, serializeField(row, options.state === true)]),
+  );
+  const required = rows.filter((row) => row.required).map((row) => row.name);
+  if (required.length === 0) delete next.required;
+  else next.required = required;
+  return next;
+};
+
+export const normalizeOutcomes = (values: ReadonlyArray<string>): ReadonlyArray<string> => {
+  const seen = new Set<string>();
+  const outcomes: string[] = [];
+  for (const value of values) {
+    const normalized = value.trim();
+    if (normalized === "" || seen.has(normalized)) continue;
+    seen.add(normalized);
+    outcomes.push(normalized);
+  }
+  return outcomes;
+};

web/apps/console/src/workspace/domain/draft-authoring-client.test.ts

@@ -13,6 +13,9 @@ import {
   type SetDraftRouteInput,
   type SetStepInputBindingsInput,
   type SetStepOutputBindingsInput,
+  type SetWorkflowContractInput,
+  type SetWorkflowOutputBindingsInput,
+  type SetWorkflowStartInput,
   type UpdateCapabilityStepInput,
 } from "./draft-workspace-models.js";
 import { createDraftAuthoringClient } from "./draft-authoring-client.js";
@@ -478,6 +481,59 @@ describe("DraftAuthoringClient", () => {
     );
   });
 
+  it("lowers focused workflow contract operations with exact copied payloads", async () => {
+    const { executor: writeExecutor, run } = createExecutor();
+    const client = createDraftAuthoringClient(writeExecutor);
+    const contract = {
+      workspaceId: " report ",
+      revision: 7,
+      inputSchema: { type: "object", properties: { title: { type: "string" } } },
+      outcomes: ["ok", "cancelled"],
+    } satisfies SetWorkflowContractInput;
+    const start = { workspaceId: "report", revision: 8, stepId: " collect " } satisfies SetWorkflowStartInput;
+    const outputs = {
+      workspaceId: "report",
+      revision: 9,
+      bindings: [
+        { path: { root: "state", parts: ["report"] }, target: "text" },
+        { target: "format", value: { kind: "markdown" } },
+      ],
+    } satisfies SetWorkflowOutputBindingsInput;
+
+    await client.setContract(contract);
+    await client.setStart(start);
+    await client.setWorkflowOutputBindings(outputs);
+
+    expect(run).toHaveBeenNthCalledWith(1, "workflow.draft_workspaces.set_contract", {
+      workspace_id: "report",
+      revision: 7,
+      input_schema: contract.inputSchema,
+      outcomes: ["ok", "cancelled"],
+    }, decodeDraftWorkspace);
+    expect(run).toHaveBeenNthCalledWith(2, "workflow.draft_workspaces.set_start", {
+      workspace_id: "report",
+      revision: 8,
+      step_id: "collect",
+    }, decodeDraftWorkspace);
+    expect(run).toHaveBeenNthCalledWith(3, "workflow.draft_workspaces.set_workflow_output_bindings", {
+      workspace_id: "report",
+      revision: 9,
+      bindings: outputs.bindings,
+    }, decodeDraftWorkspace);
+
+    (contract.inputSchema.properties as Record<string, unknown>).title = { type: "number" };
+    (outputs.bindings[0]!.path as { parts: string[] }).parts[0] = "mutated";
+    expect(run.mock.calls[0]?.[1]).toEqual(expect.objectContaining({
+      input_schema: { type: "object", properties: { title: { type: "string" } } },
+    }));
+    expect(run.mock.calls[2]?.[1]).toEqual(expect.objectContaining({
+      bindings: [
+        { path: { root: "state", parts: ["report"] }, target: "text" },
+        { target: "format", value: { kind: "markdown" } },
+      ],
+    }));
+  });
+
   it("preserves recursive expression bindings when sending node-local inputs", async () => {
     const { executor: writeExecutor, run } = createExecutor();
     const client = createDraftAuthoringClient(writeExecutor);

web/apps/console/src/workspace/domain/draft-authoring-client.ts

@@ -14,6 +14,9 @@ import {
   type SetDraftRouteInput,
   type SetStepInputBindingsInput,
   type SetStepOutputBindingsInput,
+  type SetWorkflowContractInput,
+  type SetWorkflowOutputBindingsInput,
+  type SetWorkflowStartInput,
   type UpdateCapabilityStepInput,
 } from "./draft-workspace-models.js";
 import { ConsoleClientError } from "./errors.js";
@@ -26,6 +29,9 @@ export interface DraftAuthoringClient {
   updateCapabilityStep(input: UpdateCapabilityStepInput): Promise<DraftWorkspace>;
   setStepInputBindings(input: SetStepInputBindingsInput): Promise<DraftWorkspace>;
   setStepOutputBindings(input: SetStepOutputBindingsInput): Promise<DraftWorkspace>;
+  setContract(input: SetWorkflowContractInput): Promise<DraftWorkspace>;
+  setStart(input: SetWorkflowStartInput): Promise<DraftWorkspace>;
+  setWorkflowOutputBindings(input: SetWorkflowOutputBindingsInput): Promise<DraftWorkspace>;
   setRoute(input: SetDraftRouteInput): Promise<DraftWorkspace>;
   validate(workspaceId: string): Promise<DraftWorkspace>;
 }
@@ -271,6 +277,45 @@ export const createDraftAuthoringClient = (
     );
   },
 
+  setContract: async (input) => {
+    const operation = "workflow.draft_workspaces.set_contract";
+    const params: Record<string, unknown> = {
+      workspace_id: requireIdentifier(operation, input.workspaceId, "workspace id"),
+      revision: input.revision,
+    };
+    ifDefined(params, "input_schema", input.inputSchema === undefined ? undefined : copyJsonValue(input.inputSchema));
+    ifDefined(params, "state_schema", input.stateSchema === undefined ? undefined : copyJsonValue(input.stateSchema));
+    ifDefined(params, "output_schema", input.outputSchema === undefined ? undefined : copyJsonValue(input.outputSchema));
+    ifDefined(params, "outcomes", input.outcomes === undefined ? undefined : [...input.outcomes]);
+    return executor.run(operation, params, decodeDraftWorkspace);
+  },
+
+  setStart: async (input) => {
+    const operation = "workflow.draft_workspaces.set_start";
+    return executor.run(
+      operation,
+      {
+        workspace_id: requireIdentifier(operation, input.workspaceId, "workspace id"),
+        revision: input.revision,
+        step_id: requireIdentifier(operation, input.stepId, "step id"),
+      },
+      decodeDraftWorkspace,
+    );
+  },
+
+  setWorkflowOutputBindings: async (input) => {
+    const operation = "workflow.draft_workspaces.set_workflow_output_bindings";
+    return executor.run(
+      operation,
+      {
+        workspace_id: requireIdentifier(operation, input.workspaceId, "workspace id"),
+        revision: input.revision,
+        bindings: copyInputBindings(input.bindings),
+      },
+      decodeDraftWorkspace,
+    );
+  },
+
   setRoute: async (input) => {
     const operation = "workflow.draft_workspaces.set_route";
     return executor.run(

web/apps/console/src/workspace/domain/draft-workspace-models.ts

@@ -92,6 +92,27 @@ export type SetStepOutputBindingsInput = {
   readonly bindings: ReadonlyArray<OutputBinding>;
 };
 
+export type SetWorkflowContractInput = {
+  readonly workspaceId: string;
+  readonly revision: number;
+  readonly inputSchema?: JsonObject;
+  readonly stateSchema?: JsonObject;
+  readonly outputSchema?: JsonObject;
+  readonly outcomes?: ReadonlyArray<string>;
+};
+
+export type SetWorkflowStartInput = {
+  readonly workspaceId: string;
+  readonly revision: number;
+  readonly stepId: string;
+};
+
+export type SetWorkflowOutputBindingsInput = {
+  readonly workspaceId: string;
+  readonly revision: number;
+  readonly bindings: ReadonlyArray<InputBinding>;
+};
+
 export type CreateEmptyDraftInput = {
   readonly workspaceId: string;
   readonly name: string;

web/apps/console/src/workspace/routes/DiscoverRoute.test.tsx

@@ -99,6 +99,9 @@ const authoringClient: DraftAuthoringClient = {
   updateCapabilityStep: vi.fn(),
   setStepInputBindings: vi.fn(),
   setStepOutputBindings: vi.fn(),
+  setContract: vi.fn(),
+  setStart: vi.fn(),
+  setWorkflowOutputBindings: vi.fn(),
   setRoute: vi.fn(),
   validate: vi.fn(),
 };

web/apps/console/src/workspace/routes/DraftIndexRoute.test.tsx

@@ -69,6 +69,9 @@ const authoringClient: DraftAuthoringClient = {
   updateCapabilityStep: vi.fn(),
   setStepInputBindings: vi.fn(),
   setStepOutputBindings: vi.fn(),
+  setContract: vi.fn(),
+  setStart: vi.fn(),
+  setWorkflowOutputBindings: vi.fn(),
   setRoute: vi.fn(),
   validate: vi.fn(),
 };