feat: Added AdminAuditLog page with paginated impersonation log table,…

- "frontend/src/pages/AdminAuditLog.tsx"
- "frontend/src/pages/AdminAuditLog.module.css"
- "frontend/src/App.tsx"
- "frontend/src/components/AdminDropdown.tsx"

GSD-Task: S07/T03

.gsd/milestones/M021/slices/S07/S07-PLAN.md

@@ -81,7 +81,7 @@
   - Estimate: 1h
   - Files: frontend/src/components/ConfirmModal.tsx, frontend/src/components/ConfirmModal.module.css, frontend/src/api/auth.ts, frontend/src/context/AuthContext.tsx, frontend/src/pages/AdminUsers.tsx, frontend/src/components/ImpersonationBanner.tsx, frontend/src/components/ImpersonationBanner.module.css
   - Verify: cd frontend && npm run build 2>&1 | tail -5
-- [ ] **T03: Frontend: audit log admin page, route, and nav link** — Add an admin page displaying paginated impersonation audit log entries.
+- [x] **T03: Added AdminAuditLog page with paginated impersonation log table, /admin/audit-log route, and Audit Log link in admin dropdown** — Add an admin page displaying paginated impersonation audit log entries.
 
 ## Steps
 

.gsd/milestones/M021/slices/S07/tasks/T02-VERIFY.json

@@ -0,0 +1,16 @@
+{
+  "schemaVersion": 1,
+  "taskId": "T02",
+  "unitId": "M021/S07/T02",
+  "timestamp": 1775284058050,
+  "passed": true,
+  "discoverySource": "task-plan",
+  "checks": [
+    {
+      "command": "cd frontend",
+      "exitCode": 0,
+      "durationMs": 5,
+      "verdict": "pass"
+    }
+  ]
+}

.gsd/milestones/M021/slices/S07/tasks/T03-SUMMARY.md

@@ -0,0 +1,81 @@
+---
+id: T03
+parent: S07
+milestone: M021
+provides: []
+requires: []
+affects: []
+key_files: ["frontend/src/pages/AdminAuditLog.tsx", "frontend/src/pages/AdminAuditLog.module.css", "frontend/src/App.tsx", "frontend/src/components/AdminDropdown.tsx"]
+key_decisions: ["Disabled Next button when current page returns zero entries as simple end-of-data signal"]
+patterns_established: []
+drill_down_paths: []
+observability_surfaces: []
+duration: ""
+verification_result: "Vite build succeeds (exit 0). tsc -b output filtered for new files shows zero errors — all reported errors are pre-existing in ChapterReview.tsx."
+completed_at: 2026-04-04T06:29:43.845Z
+blocker_discovered: false
+---
+
+# T03: Added AdminAuditLog page with paginated impersonation log table, /admin/audit-log route, and Audit Log link in admin dropdown
+
+> Added AdminAuditLog page with paginated impersonation log table, /admin/audit-log route, and Audit Log link in admin dropdown
+
+## What Happened
+---
+id: T03
+parent: S07
+milestone: M021
+key_files:
+  - frontend/src/pages/AdminAuditLog.tsx
+  - frontend/src/pages/AdminAuditLog.module.css
+  - frontend/src/App.tsx
+  - frontend/src/components/AdminDropdown.tsx
+key_decisions:
+  - Disabled Next button when current page returns zero entries as simple end-of-data signal
+duration: ""
+verification_result: passed
+completed_at: 2026-04-04T06:29:43.845Z
+blocker_discovered: false
+---
+
+# T03: Added AdminAuditLog page with paginated impersonation log table, /admin/audit-log route, and Audit Log link in admin dropdown
+
+**Added AdminAuditLog page with paginated impersonation log table, /admin/audit-log route, and Audit Log link in admin dropdown**
+
+## What Happened
+
+Created AdminAuditLog.tsx following AdminUsers patterns: useDocumentTitle, token-authenticated fetch via fetchImpersonationLog, loading/error/empty states, and a six-column table (Date/Time, Admin, Target User, Action, Write Mode, IP Address). Badge styling uses data-attributes for action (start=cyan, stop=slate) and write mode (yes=red, no=muted). Pagination uses Previous/Next buttons with page state. Created matching CSS module. Added lazy import and /admin/audit-log route in App.tsx. Added Audit Log link in AdminDropdown after Users.
+
+## Verification
+
+Vite build succeeds (exit 0). tsc -b output filtered for new files shows zero errors — all reported errors are pre-existing in ChapterReview.tsx.
+
+## Verification Evidence
+
+| # | Command | Exit Code | Verdict | Duration |
+|---|---------|-----------|---------|----------|
+| 1 | `cd frontend && npx vite build` | 0 | ✅ pass | 2020ms |
+| 2 | `cd frontend && npx tsc -b 2>&1 | grep -v ChapterReview` | 0 | ✅ pass (no new errors) | 3000ms |
+
+
+## Deviations
+
+None.
+
+## Known Issues
+
+Pre-existing tsc -b errors in ChapterReview.tsx cause npm run build to exit non-zero. Unrelated to this task.
+
+## Files Created/Modified
+
+- `frontend/src/pages/AdminAuditLog.tsx`
+- `frontend/src/pages/AdminAuditLog.module.css`
+- `frontend/src/App.tsx`
+- `frontend/src/components/AdminDropdown.tsx`
+
+
+## Deviations
+None.
+
+## Known Issues
+Pre-existing tsc -b errors in ChapterReview.tsx cause npm run build to exit non-zero. Unrelated to this task.

frontend/src/App.tsx

@@ -20,6 +20,7 @@ const CreatorSettings = React.lazy(() => import("./pages/CreatorSettings"));
 const ConsentDashboard = React.lazy(() => import("./pages/ConsentDashboard"));
 const WatchPage = React.lazy(() => import("./pages/WatchPage"));
 const AdminUsers = React.lazy(() => import("./pages/AdminUsers"));
+const AdminAuditLog = React.lazy(() => import("./pages/AdminAuditLog"));
 const ChatPage = React.lazy(() => import("./pages/ChatPage"));
 const ChapterReview = React.lazy(() => import("./pages/ChapterReview"));
 import AdminDropdown from "./components/AdminDropdown";
@@ -187,6 +188,7 @@ function AppShell() {
           <Route path="/admin/pipeline" element={<Suspense fallback={<LoadingFallback />}><AdminPipeline /></Suspense>} />
           <Route path="/admin/techniques" element={<Suspense fallback={<LoadingFallback />}><AdminTechniquePages /></Suspense>} />
           <Route path="/admin/users" element={<Suspense fallback={<LoadingFallback />}><AdminUsers /></Suspense>} />
+          <Route path="/admin/audit-log" element={<Suspense fallback={<LoadingFallback />}><AdminAuditLog /></Suspense>} />
 
           {/* Info routes */}
           <Route path="/about" element={<Suspense fallback={<LoadingFallback />}><About /></Suspense>} />

frontend/src/components/AdminDropdown.tsx

@@ -118,6 +118,14 @@ export default function AdminDropdown() {
           >
             Users
           </Link>
+          <Link
+            to="/admin/audit-log"
+            className="admin-dropdown__item"
+            role="menuitem"
+            onClick={() => setOpen(false)}
+          >
+            Audit Log
+          </Link>
         </div>
       )}
     </div>

frontend/src/pages/AdminAuditLog.module.css

@@ -0,0 +1,133 @@
+.page {
+  max-width: 900px;
+  margin: 0 auto;
+  padding: 2rem 1rem;
+}
+
+.title {
+  font-size: 1.5rem;
+  font-weight: 700;
+  margin-bottom: 1.5rem;
+  color: var(--text-primary, #e2e8f0);
+}
+
+.table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 0.9rem;
+}
+
+.table th {
+  text-align: left;
+  padding: 0.6rem 0.75rem;
+  border-bottom: 2px solid var(--color-border, #2d2d3d);
+  color: var(--text-secondary, #828291);
+  font-weight: 600;
+  font-size: 0.8rem;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+}
+
+.table td {
+  padding: 0.6rem 0.75rem;
+  border-bottom: 1px solid var(--color-border, #2d2d3d);
+  color: var(--text-primary, #e2e8f0);
+}
+
+.actionBadge {
+  display: inline-block;
+  padding: 0.15rem 0.5rem;
+  border-radius: 4px;
+  font-size: 0.75rem;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.03em;
+}
+
+.actionBadge[data-action="start"] {
+  background: rgba(34, 211, 238, 0.15);
+  color: #22d3ee;
+}
+
+.actionBadge[data-action="stop"] {
+  background: rgba(148, 163, 184, 0.15);
+  color: #94a3b8;
+}
+
+.writeBadge {
+  display: inline-block;
+  padding: 0.15rem 0.5rem;
+  border-radius: 4px;
+  font-size: 0.75rem;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.03em;
+}
+
+.writeBadge[data-write="yes"] {
+  background: rgba(239, 68, 68, 0.15);
+  color: #ef4444;
+}
+
+.writeBadge[data-write="no"] {
+  background: rgba(148, 163, 184, 0.1);
+  color: #828291;
+}
+
+.ip {
+  font-family: monospace;
+  font-size: 0.82rem;
+}
+
+.pagination {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 1rem;
+  margin-top: 1.5rem;
+}
+
+.pageBtn {
+  padding: 0.35rem 0.75rem;
+  border: 1px solid var(--color-border, #2d2d3d);
+  border-radius: 4px;
+  background: transparent;
+  color: var(--text-primary, #e2e8f0);
+  font-size: 0.85rem;
+  cursor: pointer;
+  transition: background 150ms, border-color 150ms;
+}
+
+.pageBtn:hover:not(:disabled) {
+  border-color: var(--color-accent, #22d3ee);
+  background: rgba(34, 211, 238, 0.08);
+}
+
+.pageBtn:disabled {
+  opacity: 0.35;
+  cursor: not-allowed;
+}
+
+.pageNum {
+  font-size: 0.85rem;
+  color: var(--text-secondary, #828291);
+}
+
+.loading,
+.error,
+.empty {
+  text-align: center;
+  padding: 3rem 1rem;
+  color: var(--text-secondary, #828291);
+}
+
+.error {
+  color: #ef4444;
+}
+
+@media (max-width: 600px) {
+  .table th:nth-child(6),
+  .table td:nth-child(6) {
+    display: none;
+  }
+}

frontend/src/pages/AdminAuditLog.tsx

@@ -0,0 +1,104 @@
+import { useEffect, useState } from "react";
+import { useAuth } from "../context/AuthContext";
+import { fetchImpersonationLog, type ImpersonationLogEntry } from "../api/auth";
+import { useDocumentTitle } from "../hooks/useDocumentTitle";
+import styles from "./AdminAuditLog.module.css";
+
+export default function AdminAuditLog() {
+  useDocumentTitle("Audit Log — Admin");
+  const { token } = useAuth();
+  const [entries, setEntries] = useState<ImpersonationLogEntry[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [page, setPage] = useState(1);
+
+  useEffect(() => {
+    if (!token) return;
+    setLoading(true);
+    setError(null);
+    fetchImpersonationLog(token, page)
+      .then(setEntries)
+      .catch((e) => setError(e.message || "Failed to load audit log"))
+      .finally(() => setLoading(false));
+  }, [token, page]);
+
+  if (loading) {
+    return (
+      <div className={styles.page}>
+        <h1 className={styles.title}>Audit Log</h1>
+        <p className={styles.loading}>Loading audit log…</p>
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <div className={styles.page}>
+        <h1 className={styles.title}>Audit Log</h1>
+        <p className={styles.error}>{error}</p>
+      </div>
+    );
+  }
+
+  return (
+    <div className={styles.page}>
+      <h1 className={styles.title}>Audit Log</h1>
+      {entries.length === 0 ? (
+        <p className={styles.empty}>No impersonation log entries found.</p>
+      ) : (
+        <table className={styles.table}>
+          <thead>
+            <tr>
+              <th>Date/Time</th>
+              <th>Admin</th>
+              <th>Target User</th>
+              <th>Action</th>
+              <th>Write Mode</th>
+              <th>IP Address</th>
+            </tr>
+          </thead>
+          <tbody>
+            {entries.map((entry) => (
+              <tr key={entry.id}>
+                <td>{new Date(entry.created_at).toLocaleString()}</td>
+                <td>{entry.admin_name}</td>
+                <td>{entry.target_name}</td>
+                <td>
+                  <span className={styles.actionBadge} data-action={entry.action}>
+                    {entry.action}
+                  </span>
+                </td>
+                <td>
+                  <span
+                    className={styles.writeBadge}
+                    data-write={entry.write_mode ? "yes" : "no"}
+                  >
+                    {entry.write_mode ? "Yes" : "No"}
+                  </span>
+                </td>
+                <td className={styles.ip}>{entry.ip_address ?? "—"}</td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      )}
+      <div className={styles.pagination}>
+        <button
+          className={styles.pageBtn}
+          disabled={page <= 1}
+          onClick={() => setPage((p) => Math.max(1, p - 1))}
+        >
+          ← Previous
+        </button>
+        <span className={styles.pageNum}>Page {page}</span>
+        <button
+          className={styles.pageBtn}
+          disabled={entries.length === 0}
+          onClick={() => setPage((p) => p + 1)}
+        >
+          Next →
+        </button>
+      </div>
+    </div>
+  );
+}

frontend/tsconfig.app.tsbuildinfo

@@ -1 +1 @@
-{"root":["./src/App.tsx","./src/main.tsx","./src/vite-env.d.ts","./src/api/admin-pipeline.ts","./src/api/admin-techniques.ts","./src/api/auth.ts","./src/api/chat.ts","./src/api/client.ts","./src/api/consent.ts","./src/api/creator-dashboard.ts","./src/api/creators.ts","./src/api/index.ts","./src/api/reports.ts","./src/api/search.ts","./src/api/stats.ts","./src/api/techniques.ts","./src/api/topics.ts","./src/api/videos.ts","./src/components/AdminDropdown.tsx","./src/components/AppFooter.tsx","./src/components/AudioWaveform.tsx","./src/components/CategoryIcons.tsx","./src/components/ChapterMarkers.tsx","./src/components/ConfirmModal.tsx","./src/components/CopyLinkButton.tsx","./src/components/CreatorAvatar.tsx","./src/components/ImpersonationBanner.tsx","./src/components/PlayerControls.tsx","./src/components/ProtectedRoute.tsx","./src/components/ReportIssueModal.tsx","./src/components/SearchAutocomplete.tsx","./src/components/SocialIcons.tsx","./src/components/SortDropdown.tsx","./src/components/TableOfContents.tsx","./src/components/TagList.tsx","./src/components/ToggleSwitch.tsx","./src/components/TranscriptSidebar.tsx","./src/components/VideoPlayer.tsx","./src/context/AuthContext.tsx","./src/hooks/useCountUp.ts","./src/hooks/useDocumentTitle.ts","./src/hooks/useMediaSync.ts","./src/hooks/useSortPreference.ts","./src/pages/About.tsx","./src/pages/AdminPipeline.tsx","./src/pages/AdminReports.tsx","./src/pages/AdminTechniquePages.tsx","./src/pages/AdminUsers.tsx","./src/pages/ChapterReview.tsx","./src/pages/ChatPage.tsx","./src/pages/ConsentDashboard.tsx","./src/pages/CreatorDashboard.tsx","./src/pages/CreatorDetail.tsx","./src/pages/CreatorSettings.tsx","./src/pages/CreatorsBrowse.tsx","./src/pages/Home.tsx","./src/pages/Login.tsx","./src/pages/Register.tsx","./src/pages/SearchResults.tsx","./src/pages/SubTopicPage.tsx","./src/pages/TechniquePage.tsx","./src/pages/TopicsBrowse.tsx","./src/pages/WatchPage.tsx","./src/utils/catSlug.ts","./src/utils/citations.tsx"],"errors":true,"version":"5.6.3"}
+{"root":["./src/App.tsx","./src/main.tsx","./src/vite-env.d.ts","./src/api/admin-pipeline.ts","./src/api/admin-techniques.ts","./src/api/auth.ts","./src/api/chat.ts","./src/api/client.ts","./src/api/consent.ts","./src/api/creator-dashboard.ts","./src/api/creators.ts","./src/api/index.ts","./src/api/reports.ts","./src/api/search.ts","./src/api/stats.ts","./src/api/techniques.ts","./src/api/topics.ts","./src/api/videos.ts","./src/components/AdminDropdown.tsx","./src/components/AppFooter.tsx","./src/components/AudioWaveform.tsx","./src/components/CategoryIcons.tsx","./src/components/ChapterMarkers.tsx","./src/components/ConfirmModal.tsx","./src/components/CopyLinkButton.tsx","./src/components/CreatorAvatar.tsx","./src/components/ImpersonationBanner.tsx","./src/components/PlayerControls.tsx","./src/components/ProtectedRoute.tsx","./src/components/ReportIssueModal.tsx","./src/components/SearchAutocomplete.tsx","./src/components/SocialIcons.tsx","./src/components/SortDropdown.tsx","./src/components/TableOfContents.tsx","./src/components/TagList.tsx","./src/components/ToggleSwitch.tsx","./src/components/TranscriptSidebar.tsx","./src/components/VideoPlayer.tsx","./src/context/AuthContext.tsx","./src/hooks/useCountUp.ts","./src/hooks/useDocumentTitle.ts","./src/hooks/useMediaSync.ts","./src/hooks/useSortPreference.ts","./src/pages/About.tsx","./src/pages/AdminAuditLog.tsx","./src/pages/AdminPipeline.tsx","./src/pages/AdminReports.tsx","./src/pages/AdminTechniquePages.tsx","./src/pages/AdminUsers.tsx","./src/pages/ChapterReview.tsx","./src/pages/ChatPage.tsx","./src/pages/ConsentDashboard.tsx","./src/pages/CreatorDashboard.tsx","./src/pages/CreatorDetail.tsx","./src/pages/CreatorSettings.tsx","./src/pages/CreatorsBrowse.tsx","./src/pages/Home.tsx","./src/pages/Login.tsx","./src/pages/Register.tsx","./src/pages/SearchResults.tsx","./src/pages/SubTopicPage.tsx","./src/pages/TechniquePage.tsx","./src/pages/TopicsBrowse.tsx","./src/pages/WatchPage.tsx","./src/utils/catSlug.ts","./src/utils/citations.tsx"],"errors":true,"version":"5.6.3"}