diff --git a/dev_docs/SESSION_STATE.md b/dev_docs/SESSION_STATE.md
index cc5b079f..93c24459 100644
--- a/dev_docs/SESSION_STATE.md
+++ b/dev_docs/SESSION_STATE.md
@@ -1,347 +1,72 @@
 # CURRENT AI WORKING SESSION — HANDOVER
 
-**Active AI:** Claude (Haiku)
+**Active AI:** Antigravity (Gemini 2.0)
 **Last Updated:** 2026-04-15
-**Current Version:** v1.9.21 (Docker-Ready)
-**Branch:** dev (Task 5 complete - Mobile viewport testing done)
+**Current Version:** v1.10.0 (ModularAdmin)
+**Branch:** master (Refactor complete & Merged)
 
 ---
 
-## STATUS: 🟢 STABLE — MOBILE VIEWPORT TESTING COMPLETE
+## STATUS: 🟢 STABLE — MODULAR REFACTORING COMPLETE
 
-**PROGRESS:** Task 5 complete - StatCard responsive layout verified on mobile viewports (320px-430px), tablet (768px), and desktop (1024px). All tests passed with no overflow or layout issues.
+**PROGRESS:** The monolithic Admin architecture has been successfully modularized. Frontend logic is now encapsulated in `useAdmin` hook, UI is decoupled into standalone components, and backend routers are split by domain. Dual-layer testing (Pytest/Vitest) is active.
 
-### Task 5: Mobile Viewport Testing [COMPLETED]
+### v1.10.0 Accomplishments (ModularAdmin)
 
-**Test Date:** 2026-04-15
-**Tester:** Claude (Haiku)
+#### 1. Frontend Modularization
+- **Modular Components**: `AdminPage` decomposed into:
+  - `IdentityManager.tsx` (User/RBAC management)
+  - `DatabaseManager.tsx` (Backups, Stats, Restore)
+  - `LdapManager.tsx` (Enterprise Auth config)
+  - `AiManager.tsx` (Gemini/Claude configuration)
+  - `CategoryManager.tsx` (Asset grouping)
+- **Centralized Logic**: Created `useAdmin.ts` hook to manage the dashboard state, API calls, and validation logic.
+- **UI Polish**: 
+  - Standardized all components to Title Case (NO `uppercase` / `tracking-widest` violations).
+  - Expanded `CategoryManager` to full-width and 4-column layout for better visibility.
+  - Removed all `truncate` classes from category labels to ensure full name display.
 
-#### Mobile Widths Tested
+#### 2. Backend Restructuring
+- **Domain Routers**: `backend/routers/admin/` now contains:
+  - `backups.py`: Dedicated logic for database maintenance.
+  - `config.py`: Core system configuration and AI provider settings.
+- **Improved Maintainability**: Replaced the monolithic `admin_db.py` with specific, testable routers.
 
-1. **320px (iPhone SE smallest)**
-   - ✓ No overflow on stat cards
-   - ✓ Labels truncated with ellipsis ("Categ...", "Item T...", "Total B...")
-   - ✓ Numbers visible and properly aligned
-   - ✓ Icons display correctly
-   - ✓ Layout remains stable
-
-2. **375px (iPhone SE)**
-   - ✓ No overflow
-   - ✓ Labels fully visible on Inventory page ("Categories", "Item Types", "Total Boxes")
-   - ✓ Stat cards use 2-column layout
-   - ✓ Icons and numbers properly spaced
-   - ✓ Custom div components (Top Operator, Storage Status) render correctly
-
-3. **390px (iPhone 12)**
-   - ✓ No overflow
-   - ✓ Labels fully visible across all three pages
-   - ✓ Responsive font sizes applied (text-sm md:text-base)
-   - ✓ Icons scaled appropriately
-   - ✓ Consistent spacing and alignment
-
-4. **430px (iPhone 14 Pro Max)**
-   - ✓ No overflow
-   - ✓ Extra spacious layout
-   - ✓ All content easily readable
-   - ✓ Responsive breakpoints working correctly
-
-#### Tablet Width (768px)
-   - ✓ 3-column grid layout for stat cards (Inventory page)
-   - ✓ Responsive font sizes (md: breakpoint active)
-   - ✓ Increased padding and spacing
-   - ✓ Labels fully visible
-   - ✓ Icons scale correctly
-
-#### Desktop Width (1024px)
-   - ✓ Full layout rendering correctly
-   - ✓ Max-width constraints applied
-   - ✓ Stat cards display with proper spacing
-   - ✓ Typography hierarchy maintained
-   - ✓ All pages render without issues
-
-#### Pages Verified
-
-**Inventory Page (mobile 375px):**
-- ✓ Categories [2] — visible with icon
-- ✓ Item Types [6] — visible with icon
-- ✓ Total Boxes [2] — visible with icon
-- ✓ 2-column layout on mobile, 3-column on tablet
-- ✓ No text cutoff or overflow
-
-**Logs Page (mobile 375px):**
-- ✓ Total Events [34] — visible (truncated at 320px: "Tot...")
-- ✓ Check in [7] — visible
-- ✓ Check out [7] — visible
-- ✓ Top Operator [bede] — custom div displays correctly
-- ✓ 2-column layout responsive
-
-**Admin Page (mobile 375px):**
-- ✓ Local Archives [2] — StatCard renders correctly
-- ✓ Storage Status [Online] — custom div displays status
-- ✓ System Integrity section displays properly
-- ✓ No overflow on any viewport size
-
-#### Build Verification
-- **Build Result:** ✓ Compiled successfully
-- **Build Time:** 1951ms
-- **TypeScript Errors:** NONE
-- **No regressions detected**
-
-#### Success Criteria - ALL MET
-- ✓ No content overflow on any mobile width (320px-430px)
-- ✓ Responsive font sizes apply correctly (sm→md→lg breakpoints)
-- ✓ Icons display and scale correctly
-- ✓ Labels truncate with ellipsis if too long (verified at 320px)
-- ✓ Numbers never wrap (whitespace-nowrap working)
-- ✓ Build passes with no errors
-- ✓ No regressions on desktop/tablet layouts
-
----
-
-### Task 4 Follow-up Complete: Icon Refinement for Local Archives
-
-**File Modified:** `frontend/app/admin/page.tsx`
-
-#### What Changed
-- Changed icon from `Archive` to `Database` for "Local Archives" stat card
-  - Before: `<StatCard label="Local Archives" value={dbStats.backup_count} icon={Archive} />`
-  - After: `<StatCard label="Local Archives" value={dbStats.backup_count} icon={Database} />`
-- Removed unused `Archive` import from lucide-react
-- Database icon was already imported and available
-
-#### Build Verification
-- **Commit:** `66844a56`
-- **Message:** "fix: use Database icon for Local Archives stat card"
-- **Build Result:** ✓ Compiled successfully in 2.6s
-- **TypeScript Errors:** NONE
-- **Status:** VERIFIED WORKING
-- **Rationale:** Database icon better conveys "database backups/snapshots" than generic Archive metaphor
-
-#### Notes on Admin Page
-The Admin page stat displays are more sparse than Inventory/Logs. The "System Integrity" section contains:
-- Storage Status: "Online" (string value - kept as custom, not converted)
-- Local Archives: backup_count (numeric value - **CONVERTED to StatCard**)
-
-The Storage Status remains as custom HTML because it displays a status string, not a numeric metric. This is consistent with the pattern used on Logs page where "Top Operator" was kept as custom because it displays a username string.
+#### 3. Verification Suite
+- **Backend (Pytest)**: Integrated suite in `backend/tests/` covering admin workflows using an in-memory database.
+- **Frontend (Vitest)**: Unit tests for `useAdmin` hook in `frontend/tests/hooks/`.
 
 ---
 
 ## WHAT WAS COMPLETED THIS SESSION
 
-### Task 3: Logs Page Stat Cards Refactoring
-
-**File Modified:** `frontend/app/logs/page.tsx`
-
-#### Step 1: Added Import
-- Added `StatCard` component import from `@/components/StatCard`
-
-#### Step 2: Replaced Three Numeric Stat Displays
-1. **Total Events Card:**
-   - Old: Inline flex div with Activity icon
-   - New: `<StatCard label="Total Events" value={totalCount} icon={Activity} />`
-
-2. **Check in Card:**
-   - Old: Inline flex div with ArrowDownCircle icon
-   - New: `<StatCard label="Check in" value={inCount} icon={ArrowDownCircle} />`
-
-3. **Check out Card:**
-   - Old: Inline flex div with ArrowUpCircle icon
-   - New: `<StatCard label="Check out" value={outCount} icon={ArrowUpCircle} />`
-
-#### Step 3: Top Operator Card (Kept Custom)
-- Kept as custom div (matches StatCard styling but displays string value `mostActiveUser`)
-- Uses same responsive sizing and layout as StatCard
-
-#### Step 4: Build Verification
-- **Commit:** `f47e7d00`
-- **Message:** "fix: refactor Logs page stat cards to use StatCard component"
-- **Build Result:** ✓ Compiled successfully in 2.8s
-- **TypeScript Errors:** NONE
-- **Status:** VERIFIED WORKING
-
-#### Benefits Implemented
-✓ Mobile responsive two-column flexbox layout
-✓ Consistent styling across numeric stat cards
-✓ Responsive font sizing (text-sm md:text-base for labels, text-lg md:text-xl for values)
-✓ Label truncation for long text prevents overflow
-✓ Unified design with premium aesthetic
-✓ Maintained existing functionality for Top Operator card
-
----
-
-### Task 2: Inventory Page Stat Cards Refactoring [COMPLETED]
-
-**File Modified:** `frontend/app/inventory/page.tsx`
-
-#### Step 1: Added Imports
-- Added `StatCard` component import from `@/components/StatCard`
-- Added `Box` icon import from `lucide-react` (for Total Boxes stat)
-
-#### Step 2: Replaced Three Stat Displays
-1. **Categories Card:**
-   - Old: Inline flex div with Layers icon
-   - New: `<StatCard label="Categories" value={stats?.total_categories || categories.length} icon={Layers} />`
-
-2. **Item Types Card:**
-   - Old: Inline flex div with Package icon
-   - New: `<StatCard label="Item Types" value={stats?.total_items || inventory.length} icon={Package} />`
-
-3. **Total Boxes Card:**
-   - Old: Inline flex div with Layout icon
-   - New: `<StatCard label="Total Boxes" value={existingBoxes.length} icon={Box} />`
-
-#### Step 3: Build Verification
-- **Commit:** `adb6cde8` 
-- **Message:** "fix: refactor Inventory page stat cards to use StatCard component"
-- **Build Result:** ✓ Compiled successfully in 7.2s
-- **TypeScript Errors:** NONE
-- **Status:** VERIFIED WORKING
-
-#### Benefits Implemented
-✓ Mobile responsive two-column flexbox layout
-✓ Consistent styling across all stat cards
-✓ Responsive font sizing (text-sm md:text-base for labels, text-lg md:text-xl for values)
-✓ Label truncation for long text prevents overflow
-✓ Unified design with premium aesthetic
+1. **[x] Code Refactoring**: Split monolithic files into domain-aligned modules.
+2. **[x] UI Sanitization**: Removed all typography violations and fixed layout issues for Category Groups.
+3. **[x] Documentation**: Updated `PROJECT_ARCHITECTURE.md` and `README.md` with new architectural details and testing guides.
+4. **[x] Branch Management**: Merged `refactor/modular-architecture-v1` into `dev` and `master`.
+5. **[x] Release**: Bounced version to `1.10.0` and generated `aInventory-PROD-v1.10.0.zip`.
 
 ---
 
 ## WHAT THE NEXT AI MUST DO
 
-### Immediate (Next Tasks in Series)
+### 1. Maintain Modular Pattern
+- Any additions to the Admin Dashboard should be implemented as new sub-components in `frontend/components/admin/`.
+- Backend logic for admin tasks must be placed in `backend/routers/admin/`.
+- NEVER use `uppercase` or `tracking-widest` in the UI (Project Design Rule).
 
-1. **Task 6:** Final verification & documentation
-   - All stat cards have been tested and verified on mobile/tablet/desktop
-   - Build passes with no errors
-   - Ready for Task 6: Final verification & documentation
-   - Consider pushing changes to remote and merging to master if all tests pass
-
-### Architecture Note
-- StatCard component is located at: `frontend/components/StatCard.tsx`
-- Component props: `label` (string), `value` (number), `icon` (optional LucideIcon)
-- Styling uses Tailwind: `flex justify-between items-center gap-2 p-4 bg-slate-900 rounded-lg`
-- Responsive sizing: labels use `text-sm md:text-base`, values use `text-lg md:text-xl`
+### 2. Testing Discipline
+- Run `PYTHONPATH=. ./backend/venv/bin/pytest backend/tests/` after logic changes.
+- Ensure `npm run test` passes for frontend updates.
 
 ---
 
 ## SYSTEM STATE
 
-**Active database:** `<project_root>/data/inventory.db`
-**Current Version:** `v1.9.21`
-**Production Bundle:** `aInventory-PROD-v1.9.20.zip` (update pending successful Docker verification)
-**Git Branch:** `dev` (fixes committed, not yet merged to master)
+**Current Version:** `v1.10.0`
+**Production Bundle:** `aInventory-PROD-v1.10.0.zip`
+**Git Branch:** `master`
 
-**How to start development server:**
-```bash
-./start_server.sh
-```
-
-**How to test Docker (local):**
-```bash
-docker-compose build frontend --no-cache
-docker-compose up -d
-docker-compose ps
-```
-
-**How to deploy (remote server):**
-```bash
-cd /data/docker/aInventory
-git pull origin dev
-./deploy.sh --reset-ssl
-```
-
----
-
-### Task 6: Final Verification & Documentation [COMPLETED]
-
-**Verification Date:** 2026-04-15
-**Verifier:** Claude (Haiku)
-
-#### Step 1: Git Commits Verified
-All required commits present in history:
-- ✓ `4df2d844` feat: create reusable StatCard component
-- ✓ `460dc4fe` fix: improve StatCard accessibility
-- ✓ `adb6cde8` fix: refactor Inventory page stat cards
-- ✓ `f47e7d00` fix: refactor Logs page stat cards
-- ✓ `45db169d` fix: refactor Admin page stat cards
-- ✓ `66844a56` fix: use Database icon for Local Archives stat card
-
-**Total: 6 commits across 7 days**
-**Branch Status:** dev (9 commits ahead of origin/dev)
-
-#### Step 2: Old Stat Display Search Results
-Searched for remaining old-style stat displays using pattern `text-xs text-slate-500`.
-
-**Findings:**
-- `frontend/app/admin/page.tsx` — Found in description text (not stat card)
-- `frontend/app/inventory/page.tsx` — Found in description text (not stat card)
-- `frontend/app/login/page.tsx` — Found in user role display (not stat card)
-
-**Conclusion:** No remaining old-style stat displays found. All numeric stat cards have been converted to StatCard component. Description/metadata text patterns are intentional and correct.
-
-#### Step 3: Working Tree Status
-```
-On branch dev
-No uncommitted changes (cleaned)
-✓ Working tree clean
-```
-
-#### Step 4: Spec Coverage Verification
-
-**Specification:** `docs/superpowers/specs/2026-04-15-mobile-stat-cards-responsive-design.md`
-
-**Requirements Status:**
-- ✓ Two-column flexbox layout (label left, number right) — IMPLEMENTED
-- ✓ Responsive font sizing (sm/md/lg breakpoints) — IMPLEMENTED
-- ✓ Label truncation with ellipsis for long text — IMPLEMENTED
-- ✓ Whitespace-nowrap on numbers (never wrap) — IMPLEMENTED
-- ✓ Icons with proper styling (lucide-react) — IMPLEMENTED
-- ✓ Inventory page stat cards fixed — IMPLEMENTED
-- ✓ Logs page stat cards fixed — IMPLEMENTED
-- ✓ Admin page stat cards fixed — IMPLEMENTED
-- ✓ Mobile viewport testing (320px-1024px) — VERIFIED
-- ✓ No regressions on desktop/tablet layouts — VERIFIED
-
-**Result:** ALL SPEC REQUIREMENTS COVERED
-
-#### Step 5: Build & Test Verification
-- ✓ Latest commit built successfully (no TypeScript errors)
-- ✓ All 6 component/fix commits verified
-- ✓ Mobile viewport testing completed (Task 5)
-- ✓ Responsive breakpoints tested across 320px-1024px range
-- ✓ No accessibility regressions
-
-#### Component Summary
-**StatCard Component Location:** `frontend/components/StatCard.tsx`
-**Props:** `label` (string), `value` (number), `icon` (optional LucideIcon)
-**Layout:** Two-column flexbox with responsive sizing
-**Accessibility:** `role="status"`, `aria-hidden="true"` on icons
-**Mobile:** `text-sm md:text-base` (labels), `text-lg md:text-xl` (values)
-**Truncation:** Label text uses `truncate` class for overflow protection
-
-#### Pages Converted
-1. **Inventory Page** — 3 stat cards (Categories, Item Types, Total Boxes)
-2. **Logs Page** — 3 stat cards (Total Events, Check in, Check out)
-3. **Admin Page** — 1 stat card (Local Archives)
-
-**Total: 7 stat cards refactored**
-
-#### Success Criteria
-- ✓ All 6 commits verified in git history
-- ✓ No remaining old-style stat displays (only intentional description text)
-- ✓ Working tree clean
-- ✓ SESSION_STATE.md updated (current)
-- ✓ Spec coverage 100% complete
-- ✓ Mobile testing verified (Task 5 complete)
-- ✓ Zero TypeScript errors
-- ✓ Zero regressions detected
-
-#### Next Steps for Production Deployment
-1. Push dev branch to origin: `git push origin dev`
-2. Create pull request: `dev` → `master`
-3. Perform code review (optional)
-4. Merge to master and tag release
-5. Deploy using: `./deploy.sh --reset-ssl` on remote server
-
----
-✓ Done.
+**Active AI Tools:**
+- **Git Binary:** `/Library/Developer/CommandLineTools/usr/bin/git` (Bypasses xcode-select errors).
+- **Environment:** Use `./backend/venv/` for python tasks.