revert: roll back v12.3.3 (Issue Blowout 2026)

SessionStart context injection regressed in v12.3.3 — no memory
context is being delivered to new sessions. Rolling back to the
v12.3.2 tree state while the regression is investigated.

Reverts #2080.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/ui/viewer/hooks/useSettings.ts

@@ -3,7 +3,6 @@ import { Settings } from '../types';
 import { DEFAULT_SETTINGS } from '../constants/settings';
 import { API_ENDPOINTS } from '../constants/api';
 import { TIMING } from '../constants/timing';
-import { authFetch } from '../utils/api';
 
 export function useSettings() {
   const [settings, setSettings] = useState<Settings>(DEFAULT_SETTINGS);
@@ -12,13 +11,8 @@ export function useSettings() {
 
   useEffect(() => {
     // Load initial settings
-    authFetch(API_ENDPOINTS.SETTINGS)
-      .then(async res => {
-        if (!res.ok) {
-          throw new Error(`Failed to load settings (${res.status})`);
-        }
-        return res.json();
-      })
+    fetch(API_ENDPOINTS.SETTINGS)
+      .then(res => res.json())
       .then(data => {
         // Use ?? (nullish coalescing) instead of || so that falsy values
         // like '0', 'false', and '' from the backend are preserved.
@@ -66,30 +60,20 @@ export function useSettings() {
     setIsSaving(true);
     setSaveStatus('Saving...');
 
-    try {
-      const response = await authFetch(API_ENDPOINTS.SETTINGS, {
-        method: 'POST',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify(newSettings)
-      });
+    const response = await fetch(API_ENDPOINTS.SETTINGS, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(newSettings)
+    });
 
-      if (!response.ok) {
-        setSaveStatus(`✗ Error: ${response.status === 401 ? 'Unauthorized' : response.statusText}`);
-        setIsSaving(false);
-        return;
-      }
+    const result = await response.json();
 
-      const result = await response.json();
-
-      if (result.success) {
-        setSettings(newSettings);
-        setSaveStatus('✓ Saved');
-        setTimeout(() => setSaveStatus(''), TIMING.SAVE_STATUS_DISPLAY_DURATION_MS);
-      } else {
-        setSaveStatus(`✗ Error: ${result.error}`);
-      }
-    } catch (error) {
-      setSaveStatus(`✗ Error: ${error instanceof Error ? error.message : 'Network error'}`);
+    if (result.success) {
+      setSettings(newSettings);
+      setSaveStatus('✓ Saved');
+      setTimeout(() => setSaveStatus(''), TIMING.SAVE_STATUS_DISPLAY_DURATION_MS);
+    } else {
+      setSaveStatus(`✗ Error: ${result.error}`);
     }
 
     setIsSaving(false);