diff --git a/scripts/src/hwlab-node-web-probe-runner-source.ts b/scripts/src/hwlab-node-web-probe-runner-source.ts
index 341760ca..6603febe 100644
--- a/scripts/src/hwlab-node-web-probe-runner-source.ts
+++ b/scripts/src/hwlab-node-web-probe-runner-source.ts
@@ -309,10 +309,11 @@ async function formLoginOutcome(targetPage) {
 }
 
 function scriptHelpers() {
+  const livePage = createLivePageProxy();
   const helpers = {
     browser,
     context,
-    page,
+    page: livePage,
     baseUrl,
     runDir,
     auth: publicAuth(auth),
@@ -345,6 +346,27 @@ function scriptHelpers() {
   return helpers;
 }
 
+function createLivePageProxy() {
+  return new Proxy({}, {
+    get(_target, prop) {
+      if (prop === "then") return undefined;
+      const target = page;
+      if (!target) throw stableProbeError("browser-load-jitter", "browser page is not initialized", publicReadiness({ error: "browser-page-missing" }));
+      const value = target[prop];
+      return typeof value === "function" ? value.bind(target) : value;
+    },
+    set(_target, prop, value) {
+      const target = page;
+      if (!target) throw stableProbeError("browser-load-jitter", "browser page is not initialized", publicReadiness({ error: "browser-page-missing" }));
+      target[prop] = value;
+      return true;
+    },
+    has(_target, prop) {
+      return Boolean(page && prop in page);
+    }
+  });
+}
+
 function recordStep(name, data = {}, options = {}) {
   const normalizedName = String(name || "step").replace(/[^A-Za-z0-9_.:-]/gu, "-").slice(0, 80) || "step";
   const item = {
@@ -542,12 +564,20 @@ async function fetchJson(target, options = {}) {
     parseError: typeof response.parseError === "string" ? response.parseError : null,
     error: typeof response.error === "string" ? response.error : null,
   };
+  result.failureKind = result.ok ? null : classifyFetchFailureKind(result);
   if (options.throwOnError === true && result.ok !== true) {
-    throw stableProbeError("api-response-failed", result.error || result.statusText || "fetchJson failed", publicReadiness({ error: "api-response-failed" }));
+    throw stableProbeError(result.failureKind || "api-response-failed", result.error || result.statusText || "fetchJson failed", publicReadiness({ error: result.failureKind || "api-response-failed" }));
   }
   return result;
 }
 
+function classifyFetchFailureKind(result) {
+  const text = String(result?.error ?? "") + " " + String(result?.statusText ?? "");
+  if (Number(result?.status ?? 0) === 0 && /Failed to fetch|fetch-error|network|NetworkError/iu.test(text)) return "same-origin-api-fetch-failed";
+  if (Number(result?.status ?? 0) === 401 || Number(result?.status ?? 0) === 403) return "auth-or-session-api-failed";
+  return "api-response-failed";
+}
+
 async function collectText(selector, options = {}) {
   options = normalizeHelperOptions(options);
   const normalizedSelector = String(selector || "").trim();
@@ -581,7 +611,136 @@ async function waitWorkbenchReady(options = {}) {
   const next = { ...options };
   delete next.target;
   if (next.selectors === undefined) next.selectors = ["#workspace", "#command-input"];
-  return gotoStable(target, next);
+  const stable = await gotoStable(target, next);
+  const readiness = await ensureWorkbenchComposerReady(next);
+  const result = {
+    ...stable,
+    shellReady: stable.ok === true,
+    sessionReady: readiness.sessionReady,
+    composerReady: readiness.composerReady,
+    composer: readiness.composer,
+    workspace: readiness.workspace,
+    sessionRepair: readiness.sessionRepair
+  };
+  recordStep("workbench-ready", {
+    ok: result.shellReady && result.sessionReady && result.composerReady,
+    finalUrl: result.finalUrl,
+    shellReady: result.shellReady,
+    sessionReady: result.sessionReady,
+    composerReady: result.composerReady,
+    disabledReason: result.composer?.disabledReason ?? null,
+    sessionRepair: result.sessionRepair
+  });
+  if (options.throwOnFailure === true && (!result.sessionReady || !result.composerReady)) {
+    const reason = result.composer?.disabledReason || (!result.sessionReady ? "session-not-selected" : "composer-disabled");
+    throw stableProbeError(reason === "session_required" ? "session-not-selected" : "composer-disabled", "Workbench composer is not ready: " + JSON.stringify({ reason, composer: result.composer, workspace: result.workspace }), publicReadiness({ error: reason }));
+  }
+  return result;
+}
+
+async function ensureWorkbenchComposerReady(options = {}) {
+  const before = await collectWorkbenchReadyState();
+  let sessionRepair = null;
+  let after = before;
+  if (before.composer.disabledReason === "session_required" && options.ensureSession !== false) {
+    sessionRepair = await createProbeSessionFromUi(options);
+    after = await collectWorkbenchReadyState();
+  }
+  const timeout = boundedInteger(options.composerTimeoutMs ?? options.readinessTimeoutMs ?? options.timeoutMs, Math.min(timeoutMs, 10000), 1, Math.max(timeoutMs, 60000));
+  if (!after.composer.ready) {
+    await page.waitForFunction(() => {
+      const input = document.querySelector("#command-input");
+      const send = document.querySelector("#command-send");
+      const warning = document.querySelector(".composer-warning")?.textContent?.trim() || "";
+      const activeTab = document.querySelector(".session-tab[data-active='true'], .session-tab[aria-selected='true']");
+      return Boolean(input && send && activeTab && !input.disabled && !warning);
+    }, null, { timeout }).catch(() => null);
+    after = await collectWorkbenchReadyState();
+  }
+  return {
+    shellReady: after.shellReady,
+    sessionReady: after.sessionReady,
+    composerReady: after.composer.ready,
+    composer: after.composer,
+    workspace: after.workspace,
+    before,
+    after,
+    sessionRepair
+  };
+}
+
+async function createProbeSessionFromUi(options = {}) {
+  const create = page.locator("#session-create").first();
+  if (!(await create.isVisible({ timeout: Math.min(timeoutMs, 5000) }).catch(() => false))) {
+    return { ok: false, method: "ui-click", reason: "session-create-not-visible" };
+  }
+  const before = await collectWorkbenchReadyState();
+  await create.click();
+  const timeout = boundedInteger(options.sessionCreateTimeoutMs ?? options.readinessTimeoutMs ?? options.timeoutMs, Math.min(timeoutMs, 15000), 1, Math.max(timeoutMs, 60000));
+  await page.waitForFunction((initial) => {
+    const activeTab = document.querySelector(".session-tab[data-active='true'], .session-tab[aria-selected='true']");
+    const sessionId = activeTab?.getAttribute("data-session-id") || "";
+    const warning = document.querySelector(".composer-warning")?.textContent?.trim() || "";
+    const input = document.querySelector("#command-input");
+    return Boolean(activeTab && sessionId && sessionId !== initial.sessionId && input && !input.disabled && !warning);
+  }, { sessionId: before.workspace.activeSessionId }, { timeout }).catch(() => null);
+  const after = await collectWorkbenchReadyState();
+  return {
+    ok: after.sessionReady && after.composer.ready,
+    method: "ui-click",
+    before: before.workspace,
+    after: after.workspace,
+    composer: after.composer
+  };
+}
+
+async function collectWorkbenchReadyState() {
+  return page.evaluate(() => {
+    const activeTab = document.querySelector(".session-tab[data-active='true'], .session-tab[aria-selected='true']");
+    const routeMatch = window.location.pathname.match(/\/workbench\/sessions\/([^/]+)/u) || window.location.pathname.match(/\/workspace\/sessions\/([^/]+)/u);
+    const input = document.querySelector("#command-input");
+    const send = document.querySelector("#command-send");
+    const form = document.querySelector("#command-form");
+    const warning = document.querySelector(".composer-warning")?.textContent?.trim() || null;
+    const mode = document.querySelector(".composer-mode")?.textContent?.trim() || null;
+    const draft = input && typeof input.value === "string" ? input.value : "";
+    const sendAction = send?.getAttribute("data-action") || null;
+    const inputVisible = Boolean(input);
+    const sendVisible = Boolean(send);
+    const inputDisabled = input ? Boolean(input.disabled) : null;
+    const sendDisabled = send ? Boolean(send.disabled) : null;
+    const disabledReason = warning || (form?.getAttribute("title") === "session_required" ? "session_required" : null);
+    const sendDisabledReason = disabledReason || (sendDisabled && draft.trim().length === 0 && sendAction !== "cancel" ? "empty_draft" : sendDisabled ? "button_disabled" : null);
+    const sessionId = activeTab?.getAttribute("data-session-id") || null;
+    const conversationId = activeTab?.getAttribute("data-conversation-id") || (routeMatch ? decodeURIComponent(routeMatch[1] || "") : null);
+    const sessionReady = Boolean(sessionId || conversationId);
+    const composerReady = Boolean(inputVisible && sendVisible && inputDisabled === false && !disabledReason && sessionReady);
+    return {
+      shellReady: Boolean(document.querySelector("#workspace") && inputVisible),
+      sessionReady,
+      workspace: {
+        finalUrl: window.location.href,
+        routeConversationId: routeMatch ? decodeURIComponent(routeMatch[1] || "") : null,
+        activeSessionId: sessionId,
+        activeConversationId: conversationId,
+        activeStatus: activeTab?.getAttribute("data-status") || null,
+        tabCount: document.querySelectorAll(".session-tab").length
+      },
+      composer: {
+        ready: composerReady,
+        inputVisible,
+        inputDisabled,
+        inputLength: draft.length,
+        sendVisible,
+        sendDisabled,
+        sendAction,
+        disabledReason,
+        sendDisabledReason,
+        mode,
+        formTitle: form?.getAttribute("title") || null
+      }
+    };
+  });
 }
 
 async function screenshotOnError(name = "failure.png", fn = null, options = {}) {
@@ -1104,9 +1263,14 @@ function probeErrorCode(error, message) {
   const known = new Set([
     "assertion-failed",
     "auth-login-failed",
+    "auth-or-session-api-failed",
+    "auth-redirect-login",
     "browser-failed",
     "browser-load-jitter",
+    "composer-disabled",
     "selector-timeout",
+    "same-origin-api-fetch-failed",
+    "session-not-selected",
     "api-not-sent",
     "api-response-failed",
     "script-api-misuse",
@@ -1116,6 +1280,10 @@ function probeErrorCode(error, message) {
   if (explicit && known.has(explicit)) return explicit;
   if (known.has(message)) return message;
   if (isEvaluateApiMisuse(message)) return "script-api-misuse";
+  if (/same-origin-api-fetch-failed|Failed to fetch/iu.test(message)) return "same-origin-api-fetch-failed";
+  if (/auth-redirect-login|login\?redirect|authState.*login/iu.test(message)) return "auth-redirect-login";
+  if (/session_required|session-not-selected|session not selected/iu.test(message)) return "session-not-selected";
+  if (/composer-disabled|command-send|command bar|composer is not ready|button_disabled|disabledReason/iu.test(message)) return "composer-disabled";
   if (/AssertionError|ERR_ASSERTION|\bassert(?:ion)?\b|expect\(.*\)|ok:false/iu.test(message)) return "assertion-failed";
   if (/auth-login-failed|login form not visible|missing HWLAB_WEB_PASS/iu.test(message)) return "auth-login-failed";
   if (/executable doesn't exist|browser executable|failed to launch|browserType\.launch|browser has been closed/iu.test(message)) return "browser-failed";
@@ -1124,6 +1292,11 @@ function probeErrorCode(error, message) {
 }
 
 function probeFailureKind(code, message) {
+  if (code === "auth-redirect-login") return "auth-redirect-login";
+  if (code === "same-origin-api-fetch-failed") return "same-origin-api-fetch-failed";
+  if (code === "composer-disabled") return "composer-disabled";
+  if (code === "session-not-selected") return "session-not-selected";
+  if (code === "auth-or-session-api-failed") return "auth-or-session-api-failed";
   if (code === "script-api-misuse") return "script-api-misuse";
   if (code === "auth-login-failed") return "auth-failed";
   if (code === "browser-failed") return "browser-failed";
@@ -1133,6 +1306,9 @@ function probeFailureKind(code, message) {
 }
 
 function probeFailureGuidance(failureKind) {
+  if (failureKind === "composer-disabled" || failureKind === "session-not-selected") return "Inspect readiness.composer and readiness.workspace; waitWorkbenchReady can create/select a submit-capable session unless ensureSession:false is set.";
+  if (failureKind === "auth-redirect-login") return "Inspect auth/session bootstrap and finalUrl; the browser returned to /login after CLI-managed auth.";
+  if (failureKind === "same-origin-api-fetch-failed") return "Inspect the failed same-origin API path, current URL, auth state, and browser console/network evidence in the full report.";
   if (failureKind === "script-api-misuse") return evaluateSingleArgGuidance();
   if (failureKind === "navigation-failed") return "Inspect probe.readiness for selector/API readiness details and lastScreenshot for the browser state.";
   if (failureKind === "auth-failed") return "Inspect probe.auth sourceRef/fingerprint/status; do not print or copy the web login secret.";
@@ -1717,6 +1893,10 @@ function latestApiMatrixFromSteps(steps) {
 
 function classifyIssueFailureKind(kind, message = "") {
   const text = String(kind ?? "") + " " + String(message ?? "");
+  if (/auth-redirect-login/iu.test(text)) return "auth-redirect-login";
+  if (/composer-disabled/iu.test(text)) return "composer-disabled";
+  if (/session-not-selected|session_required/iu.test(text)) return "session-not-selected";
+  if (/same-origin-api-fetch-failed/iu.test(text)) return "same-origin-api-fetch-failed";
   if (/api|fetch|network|Failed to fetch|HTTP|status/iu.test(text)) return "network-or-api-fetch-bug";
   if (/script-api-misuse|page\.evaluate|safeEvaluate|Too many arguments/iu.test(text)) return "script-bug";
   if (/auth|login|credential/iu.test(text)) return "target-auth-bug";
@@ -1727,6 +1907,9 @@ function classifyIssueFailureKind(kind, message = "") {
 }
 
 function issueNextAction(failureKind, payload) {
+  if (failureKind === "auth-redirect-login") return "Inspect summary.finalUrl, auth/session bootstrap, and target login redirect handling before rerunning fresh-session.";
+  if (failureKind === "composer-disabled" || failureKind === "session-not-selected") return "Inspect readiness.composer disabledReason and workspace/session summary; create or select a submit-capable session, then rerun the same probe.";
+  if (failureKind === "same-origin-api-fetch-failed") return "Inspect summary.apiMatrix failed rows, current URL, auth state, and browser console/network evidence in reportPath.";
   if (failureKind === "network-or-api-fetch-bug") return "Inspect summary.apiMatrix failed rows and retry the same node/lane after checking API availability.";
   if (failureKind === "script-bug") return "Fix the probe script or use safeEvaluate/safeFetchJson/fetchApiMatrix helpers, then rerun the same command.";
   if (failureKind === "target-auth-bug") return "Inspect credential sourceRef/fingerprint and target /auth/login state; do not print secrets.";