feat(admin): Phase 6 sub-commit 2 — remove .user-panel overlay

Now that the deep pages (sub-commit 1) work, retire the legacy
.user-panel inline overlay entirely.

* admin.html: removed <div class="user-panel" id="user-panel"> block
  inside #tab-users, removed dead .user-panel* CSS (kept .btn-close
  for any external use).
* users.js: removed openUserPanel / closeUserPanel / reloadUserPanel
  and their closure state (activeTr, activeUserRole). User row onclick
  switched from openUserPanel(...) → AdminRouter.navigate('#users/N').
  clearUserHistory / toggleBanUser / confirmDeleteUser / openEditUserModal
  / openUserPermsModal / doSet/doReset* all refactored to use the
  getActiveUid() helper (reads window.activeUid, set by user-detail.init)
  + reloadDetailAndList() helper (refreshes deep page + list together).
* sessions.js: row click + eye-button switched from toggleDrawer(id)
  → gotoSession(id) → AdminRouter.navigate('#sessions/N'). Removed
  toggleDrawer + renderDrawer functions (~60L) and openDrawerId state.
  Inline drawer markup removed from the row template.

Verified node --check on all touched JS. ast-index confirms zero
remaining usages of openUserPanel / closeUserPanel / reloadUserPanel /
toggleDrawer across the repo.

This completes Phase 6 and the admin-redesign feature.

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

plans/admin-redesign/CONTEXT.md

@@ -9,7 +9,18 @@
 - ✅ Phase 3 implemented — `#overview` стал дефолтным route'ом admin-панели. Backend: `GET /api/admin/overview` (admin-only, ~0.08ms/call) возвращает digest за 24ч: новые регистрации, запущенные сессии, активные юзеры, активные классы, failed-сессии, забаненные за неделю (из audit log), топ-5 завершённых сессий. Frontend: `frontend/js/admin/sections/overview.js` (~205L) рендерит bento-grid карточки + alerts + топ-таблицу + quick-links (deep-link через `AdminRouter.navigate`). `admin.js`: дефолт `'stats'` → `'overview'` в `activate()`, initial nav, и initial init. Old `#stats` остался работающим (доступен через nav-item). Файлы: `frontend/js/admin/sections/overview.js` (NEW), `backend/src/controllers/adminController.js` (+57L: `overviewStmts` + `getOverview`), `backend/src/routes/admin.js` (+1L), `js/api.js` (+1 helper), `frontend/admin.html` (nav-item + tab-pane + script tag), `frontend/js/admin/admin.js` (ROUTE_TO_SECTION + default route refs).
 - ✅ Phase 4 implemented — Cmd+K (Ctrl+K) global command palette. Backend: `GET /api/admin/search?q=X` (admin-only) returns `{users[5], tests[3], classes[3]}` via 3 prepared LIKE queries (`title AS name` for tests, `invite_code AS code` for classes). Frontend: `frontend/js/admin/palette.js` (~320L) — custom modal (NOT LS.modal) with capture-phase Ctrl+K listener that `stopImmediatePropagation`'s to override `/js/search.js`. Debounced 150ms, ↑↓ Enter Esc keyboard nav, click-outside close. Action registry (8 entries) is hardcoded — extend by appending to `ACTIONS` const. Result interactions: user → `AdminRouter.navigate('#users/' + id)` (Phase 6 deep page hook), test → `#tests`, class → `/classes#id`. Exposed: `window.AdminPalette = { open, close, isOpen }`, `LS.adminGlobalSearch(q)`. Files: `frontend/js/admin/palette.js` (NEW), `backend/src/controllers/adminController.js` (+50L: `searchStmts` + `globalSearch`), `backend/src/routes/admin.js` (+1L), `js/api.js` (+4L helper + export), `frontend/admin.html` (+1 script tag).
 - ✅ Phase 5 implemented — per-row hover quick actions для users + sessions tables. Users row (admin && uid !== self): 4 кнопки (Ban/Unban toggle, Award coins via LS.modal с amount+reason, Sessions → AdminRouter.navigate('#sessions'), Delete). Sessions row: 2 кнопки (View → toggleDrawer, Delete). Все `event.stopPropagation()` чтобы не триггерить row-click overlay/drawer. CSS injected ONCE через `ensureRowActionsStyles()` (de-dup по `#row-actions-style` id, обе секции проверяют existence). Mobile ≤768px: actions hidden (row-click overlay остаётся fallback'ом). Backend: NEW `DELETE /api/admin/sessions/:id` (admin-only) → `_deleteSessionTx` транзакция: nullify `assignment_sessions.session_id`, delete `user_answers` + `session_questions` (FK CASCADE но делаем explicit для visibility), delete `test_sessions`. Audit log: `'session.delete'`. Файлы: `frontend/js/admin/sections/users.js` (343→469L, +126), `frontend/js/admin/sections/sessions.js` (159→210L, +51), `backend/src/controllers/adminController.js` (+27L: `_deleteSessionTx` + `deleteSession`), `backend/src/routes/admin.js` (+1L), `js/api.js` (+1 helper + export). NO эмоджи, inline SVG (Lucide outline-style 24x24 viewBox), Lucide уже доступен через CDN. User-panel overlay НЕ удалена — оставлена для Phase 6.
-- ⬜ Phase 6 not started
+- ✅ Phase 6 implemented (sub-commits bd30200 + new) — deep entity pages replace legacy `.user-panel` overlay. NEW: `frontend/js/admin/sections/user-detail.js` (~370L) and `frontend/js/admin/sections/session-detail.js` (~180L), both IIFE pattern. `admin.js` has `DEEP_ROUTES = { users:'user-detail', sessions:'session-detail' }` + `activateDeepPane()`; `activate(route, params)` checks for first-param to dispatch deep page (parent nav-item stays highlighted). Sub-tabs (overview/sessions/classes/audit) with URL sync via `udSwitchTab()` → `AdminRouter.navigate('#users/N/<sub>', { replace: true, silent: true })`. Backend endpoints reused: `GET /api/admin/users/:id/sessions` (user history), `GET /api/admin/sessions/:id` (session detail), `GET /api/admin/audit-log?limit=500` (client-side filtered by uid for Audit tab). Removed: `<div class="user-panel" id="user-panel">` overlay HTML, `.user-panel*` CSS, `openUserPanel`/`closeUserPanel`/`reloadUserPanel` JS, `toggleDrawer`/`renderDrawer` in sessions.js. Row onclick: `openUserPanel(...)` → `AdminRouter.navigate('#users/N')`; sessions row → `gotoSession(id)` → `AdminRouter.navigate('#sessions/N')`. `clearUserHistory`/`toggleBanUser`/`confirmDeleteUser` now use `getActiveUid()` helper (reads `window.activeUid` set by user-detail.init) instead of overlay closure. `quickOpenUserSessions(uid)` → `#users/<uid>/sessions` (deep page, Sessions sub-tab). Classes sub-tab is placeholder (no per-user classes endpoint exists). Charts: simple inline SVG bar chart for per-subject avg %.
+
+## Phase 6 Routes Glossary
+
+- `#users` — list (Phase 2 section)
+- `#users/123` — deep page, default Overview sub-tab
+- `#users/123/sessions` — deep page, Sessions sub-tab
+- `#users/123/classes` — deep page, Classes sub-tab (placeholder)
+- `#users/123/audit` — deep page, Audit sub-tab (admin only)
+- `#sessions` — list (Phase 2 section)
+- `#sessions/456` — deep page
+- Cmd+K palette user pick → `#users/N` (opens deep page)
 
 ## Temporary Workarounds