diff --git a/CHANGELOG.md b/CHANGELOG.md
index 48bfccd82..fb0849e33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 - Add a Noema-owned exact-claim evidence receipt contract whose execution and research producers serialize one canonical artifact that binds every receipt semantic field, including command/result/isolation/network or source revision/excerpt/retrieval policy. Admission accepts only a receipt ID from untrusted model output. The owner API first verifies the exact authenticated OpenCode-handoff manifest digest, canonical envelope bytes, reviewed producer-to-kind policy, and repository/head/workflow/run/attempt identity before it can construct an immutable typed index; admission then reconstructs each canonical artifact and verifies time/claim/artifact identity. The version-2 manifest now binds a separate producer-authenticated `ClaimEvidenceRequirement` containing the exact claim, independently required evidence kind, and `context` or `finding` publication authority. Raw current-head source lines are context only: they are withheld from finding-reference prompts and cannot publish a finding or `request_changes`; an explicitly producer-authorized source finding remains usable and retains exact path/line checks. Finding-free model `request_changes` and `blocked` verdicts cannot bypass receipt admission to publish a vacuous blocking review. Requirement/receipt kind mismatch, fixed-artifact semantic substitution, caller-supplied receipt dictionaries, model self-classification, stale identities, cross-kind receipts, marker-only sandbox output, noncanonical artifact bytes, and expired receipts fail closed before the GitHub publisher. This remains the owner prerequisite for ContextualWisdomLab/.github#1641 and issue #555. The reviewed `sandboxed_verify` adapter exists in owner source, but its actual central stdout/stderr/marker-to-manifest wiring and the trusted research producer are not yet integrated; exact-head hosted GREEN, immutable release, and the verified central consumer bump remain required.
 
 ## Unreleased
+- Protected #704 exact `42b15e865bdf88fde622c3bba2c0b123770d18be`, integrated by GitHub-verified normal merge `e8c2002e5af8fa5611880091dab81916bb716c35`, requires Agent Runtime to admit private Workflow / Task Execution current-state evidence only when a successful response declares the owner-emitted JSON media type application/json with optional `charset=utf-8` parameter; other media-type parameters are rejected. Missing or non-JSON media types fail closed with the stable `invalid_workflow_state_response` classification before bounded parsing. Rejected-media body cancellation is best-effort cleanup: synchronous throw, asynchronous rejection, null body, or non-settling cleanup cannot replace or delay the fail-closed decision. The existing fixed 1 MiB retained buffer, 10-second absolute read deadline, fatal UTF-8/JSON admission, canonical execution binding, and reader-lock lifecycle remain unchanged. Workflow / Task lifecycle truth, provider/model routing, destination/outbound policy, credential authority, quarantine/security, Policy / Approval, State / Checkpoint, release/deployment, and foreign-domain authority remain with their existing owners; protected source/checks/merge are not an immutable release, deployed Durable Object recovery, or production p95/heap evidence.
 - Protected #702 exact `2b31805eb2b81b6078fefe1ebcce8007b6ca5169`, integrated by GitHub-verified normal merge `cf7f4279dbf83213557e987f0ee8fb52b12fcccf`, behaviorally verifies Noema's shared Cloudflare deploy/status/recovery request boundary rather than relying on source-text header presence. The three direct clients use `requestCloudflareJson`; executable tests observe the actual `fetch` request, require `Accept: application/json` and the owner bearer to override conflicting caller values, preserve unrelated caller headers such as `Content-Type`, enforce the existing 120-second request deadline, and continue into the 1 MiB bounded JSON reader. `Accept` remains request-side representation preference rather than provider response-shape authority. Cloudflare/provider truth, destination/outbound policy, credential authority, quarantine/security, recovery-state, release/deployment and foreign-domain authority remain with their existing owners; protected source/test/CI evidence is not an immutable release, production deployment, controlled recovery rehearsal, deployed p95/heap or production KPI evidence.
 - PR #701 source exact `80d3d579ad4a08ccb3f21e2735c7fb0bebc7b492` makes Noema's direct Cloudflare deploy/status/recovery control-plane clients explicitly negotiate machine-readable Cloudflare-generated errors with `Accept: application/json` before their existing 1 MiB bounded JSON response reader. Cloudflare's 2026-05-05 error-response contract documents HTML as the default for generated errors when `Accept` is absent or `*/*`, and structured JSON when `application/json` is requested; Noema still treats negotiation as preference rather than shape authority and retains fail-closed fatal UTF-8/JSON/provider-error admission. Existing 120-second request bound, fixed retained buffer, reader/cancellation lifecycle, exact recovery-state checks, credential capability, destination/outbound policy, Cloudflare/provider authority and release/deployment authority remain unchanged. This source PR is not an immutable release, production deployment, controlled recovery rehearsal, or deployed p95/heap evidence.
 - Protected #699 bounds Agent Runtime's private Workflow / Task Execution current-state response read at exact source `e52408745efc73351c098227ae4c85c309fdd0c9` with a 10-second absolute read deadline. Deadline expiry preserves the stable `invalid_workflow_state_response` fail-closed contract, requests reader cancellation only as best-effort cleanup, clears the deadline timer, and releases the reader lock on every terminal path. The existing fixed 1 MiB retained buffer, byte ceiling, fatal UTF-8/JSON admission, canonical execution binding, and Workflow / Task Execution ownership remain unchanged. Workflow / Task lifecycle, provider/model routing, outbound, credential, quarantine/security, release/deployment, and foreign-domain authority stay with their existing owners; this protected source is not an immutable release, deployed Durable Object recovery, or production p95/heap evidence. PR #699.
diff --git a/docs/product-technical-gap-baseline.md b/docs/product-technical-gap-baseline.md
index 9b7e4e998..348167818 100644
--- a/docs/product-technical-gap-baseline.md
+++ b/docs/product-technical-gap-baseline.md
@@ -154,3 +154,11 @@ The existing 65,536-byte ceiling, optional caller-supplied deadline with no inve
 Protected history includes merged PR #699 exact `e52408745efc73351c098227ae4c85c309fdd0c9`. Protected #699 closes the stalled-read liveness gap on Agent Runtime's private Workflow / Task Execution current-state response path: after successful reader acquisition, a 10-second absolute read deadline prevents an HTTP 200 response that never yields another chunk from pinning procedural guidance indefinitely. Deadline expiry preserves the stable `invalid_workflow_state_response` fail-closed contract, requests cancellation only as best-effort cleanup, clears the deadline timer, and releases the reader lock on every terminal path.
 
 The existing fixed 1 MiB retained buffer, byte ceiling, fatal UTF-8/JSON admission, canonical execution binding, and Workflow / Task Execution ownership remain unchanged. #699 remains protected source/test evidence; immutable release, deployed Durable Object recovery, and production p95/heap evidence remain separate. Workflow / Task lifecycle, provider/model routing, outbound, credential, quarantine/security, release/deployment, and foreign-domain authority stay with their existing owners.
+
+## Protected procedural current-lifecycle media admission — merged PR #704
+
+Protected history includes merged PR #704 exact `42b15e865bdf88fde622c3bba2c0b123770d18be`, integrated by GitHub-verified normal merge `e8c2002e5af8fa5611880091dab81916bb716c35`. Protected #704 closes the representation-admission gap on Agent Runtime's private Workflow / Task Execution current-state response path: successful owner evidence must identify its representation as application/json with optional `charset=utf-8` parameter; other media-type parameters are rejected before Noema performs bounded procedural-state parsing. Missing or non-JSON media types fail closed with the stable `invalid_workflow_state_response` classification.
+
+Rejected-media response-body cancellation is best-effort cleanup only: synchronous cleanup throw, asynchronous rejection, null body, or non-settling cancellation cannot replace or delay the fail-closed decision. The existing fixed 1 MiB retained buffer, byte ceiling, 10-second absolute read deadline, fatal UTF-8/JSON admission, canonical execution binding, and reader-lock lifecycle after successful acquisition remain unchanged.
+
+#704 remains protected source/test evidence; immutable release, deployed Durable Object recovery, and production p95/heap evidence remain separate. Workflow / Task lifecycle truth stays with its Durable Object owner. #704 does not transfer provider/model routing, destination/outbound policy, credential authority, quarantine/security, Policy / Approval, State / Checkpoint, release/deployment, or foreign-domain authority into Agent Runtime.
diff --git a/test/procedural-current-lifecycle-media-authority.test.ts b/test/procedural-current-lifecycle-media-authority.test.ts
new file mode 100644
index 000000000..3ae1e4d7a
--- /dev/null
+++ b/test/procedural-current-lifecycle-media-authority.test.ts
@@ -0,0 +1,92 @@
+import { readFileSync } from "node:fs";
+
+import { describe, expect, it } from "vitest";
+
+const CHANGELOG_704_MARKER = "- Protected #704 ";
+const BASELINE_704_HEADING =
+  "## Protected procedural current-lifecycle media admission — merged PR #704";
+
+const REQUIRED_704_CHANGELOG_FRAGMENTS = [
+  "Protected #704",
+  "42b15e865bdf88fde622c3bba2c0b123770d18be",
+  "e8c2002e5af8fa5611880091dab81916bb716c35",
+  "application/json with optional `charset=utf-8` parameter",
+  "invalid_workflow_state_response",
+  "best-effort cleanup",
+] as const;
+
+const REQUIRED_704_BASELINE_FRAGMENTS = [
+  "merged PR #704 exact `42b15e865bdf88fde622c3bba2c0b123770d18be`",
+  "GitHub-verified normal merge `e8c2002e5af8fa5611880091dab81916bb716c35`",
+  "application/json with optional `charset=utf-8` parameter",
+  "stable `invalid_workflow_state_response`",
+  "best-effort cleanup",
+  "immutable release",
+] as const;
+
+function extractChangelog704Entry(changelog: string): string {
+  const start = changelog.indexOf(CHANGELOG_704_MARKER);
+  if (start < 0) {
+    return "";
+  }
+  const nextEntry = changelog.indexOf("\n- ", start + CHANGELOG_704_MARKER.length);
+  return changelog.slice(start, nextEntry < 0 ? changelog.length : nextEntry);
+}
+
+function extractBaseline704Section(baseline: string): string {
+  const start = baseline.indexOf(BASELINE_704_HEADING);
+  if (start < 0) {
+    return "";
+  }
+  const nextSection = baseline.indexOf("\n## ", start + BASELINE_704_HEADING.length);
+  return baseline.slice(start, nextSection < 0 ? baseline.length : nextSection);
+}
+
+function hasProtected704ChangelogAuthority(changelog: string): boolean {
+  const entry = extractChangelog704Entry(changelog);
+  return REQUIRED_704_CHANGELOG_FRAGMENTS.every((fragment) => entry.includes(fragment));
+}
+
+function hasProtected704BaselineAuthority(baseline: string): boolean {
+  const section = extractBaseline704Section(baseline);
+  return REQUIRED_704_BASELINE_FRAGMENTS.every((fragment) => section.includes(fragment));
+}
+
+describe("protected procedural current-lifecycle media documentation authority", () => {
+  it("rejects authority fragments that are only present in neighboring documentation", () => {
+    const relocatedChangelogAuthority = [
+      "- Protected #704 exact `42b15e865bdf88fde622c3bba2c0b123770d18be`.",
+      "- Protected #702 exact `2b31805eb2b81b6078fefe1ebcce8007b6ca5169`, integrated by GitHub-verified normal merge `e8c2002e5af8fa5611880091dab81916bb716c35`, requires application/json with optional `charset=utf-8` parameter and preserves invalid_workflow_state_response with best-effort cleanup.",
+    ].join("\n");
+    const relocatedBaselineAuthority = [
+      `${BASELINE_704_HEADING}\n\nProtected history includes merged PR #704 exact \`42b15e865bdf88fde622c3bba2c0b123770d18be\`.`,
+      "## Protected neighboring authority",
+      "GitHub-verified normal merge `e8c2002e5af8fa5611880091dab81916bb716c35` uses application/json with optional `charset=utf-8` parameter, stable `invalid_workflow_state_response`, best-effort cleanup, and remains separate from immutable release evidence.",
+    ].join("\n\n");
+
+    expect(hasProtected704ChangelogAuthority(relocatedChangelogAuthority)).toBe(false);
+    expect(hasProtected704BaselineAuthority(relocatedBaselineAuthority)).toBe(false);
+  });
+
+  it("records protected #704 without promoting Workflow / Task or production authority", () => {
+    const baseline = readFileSync("docs/product-technical-gap-baseline.md", "utf8");
+    const changelog = readFileSync("CHANGELOG.md", "utf8");
+    const source = readFileSync("src/agent-runtime/procedural-current-lifecycle.ts", "utf8");
+    const changelog704 = extractChangelog704Entry(changelog);
+    const baseline704 = extractBaseline704Section(baseline);
+
+    expect(changelog704).not.toBe("");
+    for (const fragment of REQUIRED_704_CHANGELOG_FRAGMENTS) {
+      expect(changelog704).toContain(fragment);
+    }
+
+    expect(baseline704).not.toBe("");
+    for (const fragment of REQUIRED_704_BASELINE_FRAGMENTS) {
+      expect(baseline704).toContain(fragment);
+    }
+    expect(baseline704).not.toContain("#704 transfers Workflow / Task lifecycle authority to Agent Runtime");
+
+    expect(source).toContain("function isJsonMediaType(value: string | null): boolean");
+    expect(source).toContain("Noema current workflow-state response used an unsupported media type");
+  });
+});