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+# Mobile DRY Refactoring Roadmap
+
+> **Goal:** Eliminate hand-rolled platform code across all mobile surfaces (iOS, Android, React Native) by migrating to shared `@bytelyst/*` packages and SDKs.
+>
+> **Scope:** 14 mobile surfaces (iOS/Android/RN) across 8 product repos. 12 have gaps needing work. Estimated total effort: ~7.5 days.
+> Surfaces with no gaps: PeakPulse iOS (gold standard, 9 wrappers), MindLyst Android (Koin, all 6 SDK components).
+>
+> **Date:** 2026-03-21
+>
+> **Prerequisite:** All shared SDKs already exist and are tested:
+>
+> - `packages/swift-platform-sdk/` — 13 Swift components, 1,870 LOC
+> - `packages/kotlin-platform-sdk/` — 13 Kotlin components, 35 tests
+> - `packages/react-native-platform-sdk/` — createRNPlatformSDK(), AuthProvider, useAuth
+> - 18 TypeScript client packages (`@bytelyst/*`)
+
+---
+
+## Table of Contents
+
+1. [Phase 1 — ChronoMind Android: Replace Old Services with SDK](#phase-1)
+2. [Phase 2 — JarvisJr Android: Wire Platform SDK from Scratch](#phase-2)
+3. [Phase 3 — FlowMonk Mobile (RN): Add Missing Packages + Fix Raw Fetch](#phase-3)
+4. [Phase 4 — LysnrAI Android: Migrate 6 Hand-Rolled Data Services](#phase-4)
+5. [Phase 5 — NomGap (RN): Replace Raw Fetch in billing-api + photo-meal](#phase-5)
+6. [Phase 6 — LysnrAI iOS: Migrate SSO, Usage, Sync, CertPinning](#phase-6)
+7. [Phase 7 — Auth App Android: Wire BLAuthClient](#phase-7)
+8. [Phase 8 — Auth App iOS: Add Telemetry, Flags, Kill Switch](#phase-8)
+9. [Phase 9 — ChronoMind iOS + NoteLett Mobile: Minor Gaps](#phase-9)
+10. [Verification Matrix](#verification-matrix)
+
+---
+
+<a id="phase-1"></a>
+
+## Phase 1 — ChronoMind Android: Replace Old Services with SDK
+
+**Priority:** HIGH | **Effort:** 1 day | **Repo:** `learning_ai_clock` | **Commit:** [`2060a83`](https://github.com/saravanakumardb1/learning_ai_clock/commit/2060a83)
+
+### Context
+
+ChronoMind Android already had `platform/Config.kt` and `platform/PlatformModule.kt` (Hilt) providing all SDK clients. `LoginScreen.kt`, `SettingsScreen.kt`, and `TimerViewModel.kt` were **already migrated** to SDK clients in a prior session. The old services (`AuthService`, `TelemetryService`, `FeatureFlagService`) were dead code. `SyncRepository` used a hand-rolled `PlatformApiClient` with raw `HttpURLConnection`.
+
+### Files to Modify
+
+- `android/app/src/main/java/com/chronomind/app/auth/AuthService.kt` — DELETE
+- `android/app/src/main/java/com/chronomind/app/auth/LoginScreen.kt` — UPDATE call sites
+- `android/app/src/main/java/com/chronomind/app/telemetry/TelemetryService.kt` — DELETE
+- `android/app/src/main/java/com/chronomind/app/telemetry/FeatureFlagService.kt` — DELETE
+- `android/app/src/main/java/com/chronomind/app/sync/SyncRepository.kt` — UPDATE to use BLSyncEngine
+- `android/app/src/main/java/com/chronomind/app/sync/PlatformApiClient.kt` — DELETE (replace with BLPlatformClient)
+- `android/app/src/main/java/com/chronomind/app/di/AppModule.kt` — VERIFY old providers removed
+- `android/app/src/main/java/com/chronomind/app/viewmodel/TimerViewModel.kt` — UPDATE to SDK clients
+- `android/app/src/main/java/com/chronomind/app/ui/screens/SettingsScreen.kt` — UPDATE AuthService refs
+
+### Tasks
+
+- [x] **1.1 Audit call sites** — `LoginScreen.kt`, `SettingsScreen.kt`, `TimerViewModel.kt` already use SDK clients. No external references to old services.
+- [x] **1.2 Update AppModule.kt** — No old `@Provides` for auth/telemetry/flags existed. Updated `SyncRepository` provider to inject `BLSecureStore`.
+- [x] **1.3 Auth call sites** — Already migrated in prior session (`LoginScreen` → `BLAuthClient`, `SettingsScreen` → `BLAuthClient`).
+- [x] **1.4 Telemetry call sites** — Already migrated (`TimerViewModel` injects `BLTelemetryClient`).
+- [x] **1.5 Feature flag call sites** — Already migrated (`PlatformModule` provides `BLFeatureFlagClient`).
+- [x] **1.6 Migrate sync** — `PlatformApiClient` rewritten from `HttpURLConnection` → OkHttp. `SyncRepository` now reads auth token from `BLSecureStore` via `tokenProvider` lambda instead of manual `SharedPreferences`.
+- [x] **1.7 Wire KillSwitch** — `BLKillSwitchClient` injected in `MainActivity.kt` with kill switch check on app start. Shows blocking message if killed.
+- [x] **1.8 Delete dead code** — `auth/AuthService.kt` (328 LOC), `telemetry/TelemetryService.kt` (178 LOC), `telemetry/FeatureFlagService.kt` (89 LOC) deleted. Net: **-567 lines**.
+- [ ] **1.9 Build verification** — Requires Android SDK environment (corporate proxy). **TODO-1: Verify Gradle build compiles on dev machine.**
+
+---
+
+<a id="phase-2"></a>
+
+## Phase 2 — JarvisJr Android: Wire Platform SDK from Scratch
+
+**Priority:** HIGH | **Effort:** 1 day | **Repo:** `learning_ai_jarvis_jr` | **Commit:** [`336535a`](https://github.com/saravanakumardb1/learning_ai_jarvis_jr/commit/336535a)
+
+### Context
+
+JarvisJr Android had no `platform/` module. It had a stub `sync/PlatformApiClient.kt` that returned `Result.success(Unit)` for everything. The app uses Hilt for DI. Full SDK wiring was needed from scratch.
+
+### Files to Create
+
+- `android/app/src/main/java/com/jarvisjr/app/platform/Config.kt` — NEW
+- `android/app/src/main/java/com/jarvisjr/app/platform/PlatformModule.kt` — NEW (Hilt)
+
+### Files to Modify
+
+- `android/settings.gradle.kts` — add `includeBuild` for kotlin-platform-sdk
+- `android/app/build.gradle.kts` — add kotlin-platform-sdk dependency
+- `android/app/src/main/java/com/jarvisjr/app/di/AppModule.kt` — remove any old stubs
+- `android/app/src/main/java/com/jarvisjr/app/sync/PlatformApiClient.kt` — DELETE (replace with SDK)
+
+### Tasks
+
+- [x] **2.1 Add kotlin-platform-sdk to build** — `includeBuild` in `settings.gradle.kts` + `implementation("com.bytelyst:platform-sdk")` in `app/build.gradle.kts`.
+- [x] **2.2 Create `platform/Config.kt`** — `BLPlatformConfig(productId = "jarvisjr", baseUrl, platform = "android", applicationId = "com.jarvisjr.app")`.
+- [x] **2.3 Create `platform/PlatformModule.kt`** — Hilt `@Module` providing 7 SDK components: `BLPlatformConfig`, `BLSecureStore`, `BLPlatformClient`, `BLAuthClient`, `BLTelemetryClient`, `BLFeatureFlagClient`, `BLKillSwitchClient`.
+- [x] **2.4 Create LoginScreen** — New `ui/screens/LoginScreen.kt` using `BLAuthClient`. Auth gate wired in `MainActivity.kt`.
+- [x] **2.5 Wire telemetry** — `AgentViewModel.kt` now injects `BLTelemetryClient`.
+- [x] **2.6 Wire SettingsScreen** — Real user info from `BLAuthClient.authState` + logout button via `SettingsViewModel`.
+- [x] **2.7 Wire KillSwitch** — `BLKillSwitchClient` check on app start in `MainActivity.kt`.
+- [x] **2.8 Delete stub PlatformApiClient** — `sync/PlatformApiClient.kt` deleted.
+- [ ] **2.9 Build verification** — Requires Android SDK environment. **TODO-2: Verify Gradle build compiles on dev machine.**
+  - [ ] `./gradlew :app:test` — all tests pass
+
+---
+
+<a id="phase-3"></a>
+
+## Phase 3 — FlowMonk Mobile (RN): Add Missing Packages + Fix Raw Fetch
+
+**Priority:** MEDIUM | **Effort:** 0.5 day | **Repo:** `learning_ai_flowmonk` | **Commit:** [`ce70d8c`](https://github.com/saravanakumardb1/learning_ai_flowmonk/commit/ce70d8c)
+
+### Context
+
+FlowMonk mobile had 5 `@bytelyst/*` packages but was missing `telemetry-client`. Its `api.ts` was a hand-rolled fetch wrapper with no auth token injection.
+
+### Current Packages (5)
+
+`auth-client`, `feature-flag-client`, `kill-switch-client`, `offline-queue`, `platform-client`
+
+### Missing Packages (5)
+
+`telemetry-client`, `blob-client`, `design-tokens`, `api-client`, `react-native-platform-sdk`
+
+### Files to Modify
+
+- `mobile/package.json` — add 5 missing deps
+- `mobile/src/lib/api.ts` — refactor to use `@bytelyst/api-client` or `@bytelyst/platform-client`
+- `mobile/src/lib/clients.ts` — already has `authClient`, `featureFlagClient`, `killSwitchClient`, `offlineQueue`, `platformClient`; add `telemetryClient`
+
+### Files to Create
+
+- `mobile/src/lib/platform.ts` — centralized platform init (follow NoteLett pattern)
+
+### Tasks
+
+- [x] **3.1 Add `@bytelyst/telemetry-client`** to `mobile/package.json`. Other missing packages (`blob-client`, `design-tokens`, `api-client`, `react-native-platform-sdk`) deferred — not actively needed yet.
+- [x] **3.2 Wire telemetryClient** in `mobile/src/lib/clients.ts` alongside existing 5 clients.
+- [x] **3.3 Inject auth tokens in `api.ts`** — `json()` helper now reads token from `authClient.getAccessToken()` and adds `Authorization` + `X-Product-Id` headers to all API requests. Typed API surface preserved.
+- [ ] **3.4 Build verification** — **TODO-3: Run `cd mobile && npm run typecheck` to verify.**
+
+---
+
+<a id="phase-4"></a>
+
+## Phase 4 — LysnrAI Android: Migrate 6 Hand-Rolled Data Services
+
+**Priority:** MEDIUM | **Effort:** 1 day | **Repo:** `learning_voice_ai_agent` | **Commit:** [`24a09a2`](https://github.com/saravanakumardb1/learning_voice_ai_agent/commit/24a09a2)
+
+### Context
+
+LysnrAI Android had good SDK wiring (`platform/Config.kt` + `platform/PlatformModule.kt` with Hilt providing `BLTelemetryClient`, `BLFeatureFlagClient`, `BLKillSwitchClient`, `BLSecureStore`). **Note:** `BLAuthClient` is intentionally NOT in PlatformModule because `AuthViewModel` has deep LysnrAI-specific integration (DataStore, keyboard bridging, CloudSync). Audit found 11 of 13 `data/` services were **dead code** (zero external callers).
+
+### Hand-Rolled Services to Migrate
+
+| File                           | Current                      | Target SDK                                          |
+| ------------------------------ | ---------------------------- | --------------------------------------------------- |
+| `data/FeatureFlagService.kt`   | Raw HTTP + SharedPreferences | `BLFeatureFlagClient` (already in PlatformModule)   |
+| `data/KillSwitchService.kt`    | Raw HTTP                     | `BLKillSwitchClient` (already in PlatformModule)    |
+| `data/BlobService.kt`          | Raw HttpURLConnection        | `BLBlobClient`                                      |
+| `data/LicenseService.kt`       | Raw HTTP                     | `BLLicenseClient`                                   |
+| `data/SSOService.kt`           | Raw HTTP + SharedPreferences | `BLAuthClient` (OAuth flows)                        |
+| `data/UsageService.kt`         | Raw HttpURLConnection        | `BLPlatformClient` (generic fetch)                  |
+| `data/ProfileService.kt`       | Raw HTTP                     | `BLPlatformClient` (generic fetch)                  |
+| `data/CertificatePinning.kt`   | Custom OkHttp interceptor    | Evaluate: keep or move to SDK                       |
+| `data/GuestMode.kt`            | SharedPreferences            | Evaluate: keep (product-specific)                   |
+| `sync/CloudSyncService.kt`     | Raw HTTP                     | `BLSyncEngine`                                      |
+| `sync/OfflineQueue.kt`         | Custom queue                 | `BLSyncEngine` or `@bytelyst/offline-queue` pattern |
+| `sync/SessionSyncService.kt`   | Raw HTTP                     | `BLSyncEngine`                                      |
+| `telemetry/TelemetryClient.kt` | Raw HTTP                     | `BLTelemetryClient` (already in PlatformModule)     |
+
+### Tasks
+
+- [x] **4.1 Audit all data/ services for external callers** — grep found 11 of 13 services have zero external imports (dead code).
+- [x] **4.2 Delete dead code (11 files, -1,005 LOC)**:
+  - [x] `data/FeatureFlagService.kt` (96 LOC) — superseded by `BLFeatureFlagClient` in PlatformModule
+  - [x] `data/KillSwitchService.kt` (63 LOC) — superseded by `BLKillSwitchClient` in PlatformModule
+  - [x] `data/BlobService.kt` (149 LOC) — no external callers
+  - [x] `data/UsageService.kt` (118 LOC) — no external callers
+  - [x] `data/ProfileService.kt` (81 LOC) — no external callers
+  - [x] `data/SSOService.kt` (164 LOC) — no external callers
+  - [x] `data/AuditLogger.kt` (71 LOC) — no external callers
+  - [x] `data/BiometricAuth.kt` (79 LOC) — no external callers
+  - [x] `data/GuestMode.kt` (75 LOC) — no external callers
+  - [x] `data/SettingsStore.kt` (22 LOC) — no external callers
+  - [x] `data/CertificatePinning.kt` (87 LOC) — no external callers
+- [x] **4.3 Kept (active callers, product-specific):**
+  - `data/LicenseService.kt` — used by `SettingsScreen` (static calls with UI state)
+  - `data/RuntimeConfig.kt` — used by `LysnrAIApp` + `TelemetryClient`
+  - `telemetry/TelemetryClient.kt` — static singleton used by keyboard extension (no Hilt DI possible). **TODO-4: Migrate TelemetryClient to BLTelemetryClient when keyboard extension DI is reworked.**
+  - `sync/` services — active callers in `RecordViewModel`, `AuthViewModel`, `SessionsViewModel`
+- [ ] **4.4 Build verification** — **TODO-5: Verify Gradle build compiles on dev machine.**
+
+---
+
+<a id="phase-5"></a>
+
+## Phase 5 — NomGap (RN): Replace Raw Fetch in billing-api + photo-meal
+
+**Priority:** MEDIUM | **Effort:** 0.5 day | **Repo:** `learning_ai_fastgap` | **Commit:** [`63bd34b`](https://github.com/saravanakumardb1/learning_ai_fastgap/commit/63bd34b)
+
+### Context
+
+NomGap had excellent `@bytelyst/*` package adoption (18 packages). `billing-api.ts` had a hand-rolled `billingFetch()`. `photo-meal.ts` already used shared `apiPost` — raw fetch to Azure SAS URL is intentional (direct blob upload).
+
+### Files to Modify
+
+- `src/api/billing-api.ts` — hand-rolled `billingFetch()` with manual Bearer token
+- `src/lib/photo-meal.ts` — raw `fetch()` to SAS URL for blob upload
+
+### Tasks
+
+- [x] **5.1 Refactor `billing-api.ts`** — Replaced `billingFetch()` with `apiGet`/`apiPut` from shared `@bytelyst/platform-client` wrapper. Auth token + `x-product-id` now injected automatically. Net: **-19 lines**.
+- [x] **5.2 `photo-meal.ts`** — Already uses shared `apiPost` for SAS token + recognition. Raw `fetch` to SAS URL is intentional (direct Azure Blob upload). No changes needed.
+- [ ] **5.3 Build verification** — **TODO-6: Run `npm test` to verify all 505 tests still pass.**
+
+---
+
+<a id="phase-6"></a>
+
+## Phase 6 — LysnrAI iOS: Migrate SSO, Usage, Sync, CertPinning
+
+**Priority:** MEDIUM | **Effort:** 1 day | **Repo:** `learning_voice_ai_agent` | **Commit:** [`862e981`](https://github.com/saravanakumardb1/learning_voice_ai_agent/commit/862e981)
+
+### Context
+
+LysnrAI iOS had the most complete Platform/ directory (9 SDK wrappers). Audit found 5 of 10 services outside Platform/ were **dead code** (zero external callers).
+
+### Hand-Rolled Services
+
+| File                            | Current                                     | Target                                      |
+| ------------------------------- | ------------------------------------------- | ------------------------------------------- |
+| `Auth/SSOService.swift`         | Raw URLSession + ASWebAuthenticationSession | `BLAuthClient` (add SSO support if missing) |
+| `Auth/ProfileService.swift`     | Raw URLSession                              | `BLPlatformClient` via Platform/ wrapper    |
+| `Util/UsageService.swift`       | Raw URLSession                              | `BLPlatformClient` via Platform/ wrapper    |
+| `Util/CertificatePinning.swift` | URLSessionDelegate pinning                  | Evaluate: keep or add to SDK                |
+| `Sync/CloudSyncService.swift`   | Raw URLSession                              | `BLSyncEngine`                              |
+| `Sync/OfflineQueue.swift`       | Custom queue                                | `BLSyncEngine`                              |
+| `Sync/SessionSyncService.swift` | Raw URLSession                              | `BLSyncEngine`                              |
+| `Theme/ThemeService.swift`      | UserDefaults + URLSession                   | Product-specific, but HTTP should use SDK   |
+| `Views/SessionDetailView.swift` | URLSession for export                       | Use Platform/ wrapper                       |
+| `LLM/TextCleanupService.swift`  | URLSession                                  | Product-specific LLM call — keep            |
+
+### Tasks
+
+- [x] **6.1 Audit all iOS services for callers** — grep found 5 of 10 services have zero external references.
+- [x] **6.2 Delete dead code (5 files, -672 LOC)**:
+  - [x] `Auth/SSOService.swift` (184 LOC) — no external callers
+  - [x] `Auth/ProfileService.swift` (78 LOC) — no external callers
+  - [x] `Util/UsageService.swift` (96 LOC) — no external callers
+  - [x] `Util/CertificatePinning.swift` (117 LOC) — no external callers
+  - [x] `Sync/OfflineQueue.swift` (197 LOC) — no external callers
+- [x] **6.3 Kept (active callers, product-specific):**
+  - `Sync/CloudSyncService.swift` — used by `AuthService`, `RecordView`
+  - `Sync/SessionSyncService.swift` — used by `SessionStore`, `SessionsListView`
+  - `Theme/ThemeService.swift` — used by 3 views (`SessionDetailView`, `RecordView`, `SessionsListView`)
+  - `LLM/TextCleanupService.swift` — product-specific LLM call
+- [ ] **6.4 Build verification** — **TODO-7: Verify Xcode build compiles. Note: deleted files must be removed from .xcodeproj.**
+
+---
+
+<a id="phase-7"></a>
+
+## Phase 7 — Auth App Android: Wire BLAuthClient
+
+**Priority:** MEDIUM | **Effort:** 0.5 day | **Repo:** `learning_ai_auth_app` | **Commit:** [`5b65215`](https://github.com/saravanakumardb1/learning_ai_auth_app/commit/5b65215)
+
+### Context
+
+Auth App Android already had `BLAuthClient` fully wired — `AppConfig.kt` uses `BLPlatformConfig`, `AuthNavHost` uses `BLLoginScreen`/`BLMfaChallengeScreen`, and all screens receive `authClient`. Missing: `BLTelemetryClient`, `BLFeatureFlagClient`, `BLKillSwitchClient`.
+
+### Files to Modify
+
+- `android/app/src/main/kotlin/com/bytelyst/auth/platform/AppConfig.kt` — UPDATE to use `BLPlatformConfig`
+
+> **Note:** `settings.gradle.kts` already has `includeBuild` for kotlin-platform-sdk — no Gradle changes needed.
+
+### Files to Create
+
+- `android/app/src/main/kotlin/com/bytelyst/auth/platform/PlatformModule.kt` — NEW
+
+### Tasks
+
+- [x] **7.1 Build wiring verified** — `settings.gradle.kts` has `includeBuild`, `build.gradle.kts` has `implementation("com.bytelyst:platform-sdk")`. Already correct.
+- [x] **7.2 AppConfig.kt** — Already uses `BLPlatformConfig`. No changes needed.
+- [x] **7.3 BLAuthClient already fully wired** — `MainActivity.kt` creates client, `AuthNavHost` uses `BLLoginScreen`/`BLMfaChallengeScreen`, all 5 tabs receive `authClient`.
+- [x] **7.4 Add missing SDK clients** — `BLKillSwitchClient` (kill switch check on launch), `BLTelemetryClient` (auto-start), `BLFeatureFlagClient` (future feature gating) added to `MainActivity.kt`.
+- [ ] **7.5 Build verification** — **TODO-8: Verify Gradle build compiles on dev machine.**
+
+---
+
+<a id="phase-8"></a>
+
+## Phase 8 — Auth App iOS: Add Telemetry, Flags, Kill Switch
+
+**Priority:** LOW | **Effort:** 0.5 day | **Repo:** `learning_ai_auth_app` | **Commit:** [`4a84050`](https://github.com/saravanakumardb1/learning_ai_auth_app/commit/4a84050)
+
+### Context
+
+Auth App iOS already used `BLAuthClient` and `BLAuthUI` from ByteLystPlatformSDK. Missing: `BLTelemetryClient`, `BLFeatureFlagClient`, `BLKillSwitchClient`.
+
+### Files to Create
+
+- `ios/ByteLystAuth/Platform/Config.swift` — NEW
+- `ios/ByteLystAuth/Platform/TelemetryService.swift` — NEW
+- `ios/ByteLystAuth/Platform/FeatureFlagService.swift` — NEW
+- `ios/ByteLystAuth/Platform/KillSwitchService.swift` — NEW
+
+### Tasks
+
+- [x] **8.1 Config already exists** — `AppState` already had `BLPlatformConfig` with productId "smartauth". No separate Config.swift needed.
+- [x] **8.2 Add SDK clients to AppState** — `telemetryClient` (`BLTelemetryClient`), `featureFlagClient` (`BLFeatureFlagClient`), `killSwitchClient` (`BLKillSwitchClient`) added as lazy properties.
+- [x] **8.3 Wire kill switch** — `ContentView.swift` checks kill switch on launch, shows blocking message if killed.
+- [x] **8.4 Wire platform services** — `startPlatformServices()` starts telemetry + polls feature flags. Called in ContentView `.task`.
+- [x] **8.5 Consolidate lifecycle** — `restoreSession()` moved into unified `.task` block alongside kill switch + platform init.
+- [ ] **8.6 Build verification** — **TODO-9: Verify Xcode build compiles.**
+
+---
+
+<a id="phase-9"></a>
+
+## Phase 9 — Minor Gaps: ChronoMind iOS, NoteLett Mobile, MindLyst iOS, JarvisJr iOS
+
+**Priority:** LOW | **Effort:** 2–3 hours total | **Repos:** `learning_ai_clock`, `learning_ai_notes`, `learning_multimodal_memory_agents`, `learning_ai_jarvis_jr`
+
+**Commits:**
+
+- 9A: [`c328216`](https://github.com/saravanakumardb1/learning_ai_clock/commit/c328216) (ChronoMind iOS)
+- 9B: [`c2d6414`](https://github.com/saravanakumardb1/learning_ai_notes/commit/c2d6414) (NoteLett Mobile)
+- 9C: [`dce9e22`](https://github.com/saravanakumardb1/learning_multimodal_memory_agents/commit/dce9e22) (MindLyst iOS)
+- 9D: No changes needed (PlatformSyncManager actively used by MemoryManager)
+
+### 9A — ChronoMind iOS: Add Config.swift + KillSwitch
+
+ChronoMind iOS wrappers are in `Shared/Cloud/` (acceptable for multi-target). Missing `Config.swift` and `KillSwitchService`.
+
+- [x] **9A.1 Create `Shared/Cloud/Config.swift`** — shared `BLPlatformConfig` for ChronoMind.
+- [x] **9A.2 Create `Shared/Cloud/KillSwitchService.swift`** — thin wrapper over `BLKillSwitchClient`.
+- [ ] **9A.3 Wire kill switch check in `ChronoMindApp.swift`** — deferred (wrapper exists, wiring is a UI task).
+- [ ] **9A.4 Build verification** — **TODO-10: Verify Xcode build compiles.**
+
+### 9B — NoteLett Mobile: Add diagnostics-client
+
+NoteLett mobile is the gold standard but is missing `@bytelyst/diagnostics-client`.
+
+- [x] **9B.1 Add `@bytelyst/diagnostics-client`** to `mobile/package.json`.
+- [x] **9B.2 Wire `diagnosticsClient`** in `mobile/src/lib/platform.ts` alongside existing clients.
+- [ ] **9B.3 Build verification** — **TODO-11: Run `cd mobile && npm run typecheck` to verify.**
+
+### 9C — MindLyst iOS: Migrate PlatformServiceClient + Add Missing Wrappers
+
+MindLyst iOS (`mindlyst-native/iosApp/`) has 4 Platform/ SDK wrappers but `Services/PlatformServiceClient.swift` is a hand-rolled URLSession client. Also missing `Config.swift`, `KillSwitchService`, and `CrashReporter`.
+
+- [x] **9C.1 Create `Platform/Config.swift`** — shared `BLPlatformConfig` for MindLyst.
+- [x] **9C.2 `PlatformServiceClient.swift` kept** — has active callers in `CaptureScreen`, `SettingsScreen`, `AuthService`. Product-specific (audio upload, memory items). Migration deferred.
+- [x] **9C.3 Create `Platform/KillSwitchService.swift`** — thin wrapper over `BLKillSwitchClient`.
+- [x] **9C.4 Create `Platform/CrashReporter.swift`** — thin wrapper over `BLCrashReporter`.
+- [ ] **9C.5 Build verification** — **TODO-12: Verify Xcode build compiles.**
+
+### 9D — JarvisJr iOS: Migrate PlatformSyncManager
+
+JarvisJr iOS Platform/ is clean (7 wrappers) but `Shared/Cloud/PlatformSyncManager.swift` uses raw URLSession.
+
+- [x] **9D.1 `PlatformSyncManager.swift` kept** — has active caller in `MemoryManager.swift`. Product-specific sync logic. No changes needed.
+- [ ] **9D.2 Build verification** — **TODO-13: Verify Xcode build compiles.**
+
+---
+
+<a id="verification-matrix"></a>
+
+## Verification Matrix
+
+After all phases, every mobile surface should pass this checklist:
+
+### iOS Apps (ByteLystPlatformSDK)
+
+| Check                                        | LysnrAI    | ChronoMind | JarvisJr   | PeakPulse  | MindLyst   | Auth App    |
+| -------------------------------------------- | ---------- | ---------- | ---------- | ---------- | ---------- | ----------- |
+| `BLPlatformConfig` wrapper                   | □ (exists) | □          | □ (exists) | □ (exists) | □          | □           |
+| `BLKeychain` wrapper                         | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □ (via SDK) |
+| `BLAuthClient` wrapper                       | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □ (via SDK) |
+| `BLTelemetryClient` wrapper                  | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □           |
+| `BLFeatureFlagClient` wrapper                | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □ (exists) | □           |
+| `BLKillSwitchClient` wrapper                 | □ (exists) | □          | □ (exists) | □ (exists) | □          | □           |
+| `BLCrashReporter` wrapper                    | □          | □ (exists) | □ (exists) | □ (exists) | □          | □           |
+| No hand-rolled URLSession for platform calls | □          | □ (exists) | □          | □ (exists) | □          | □ (exists)  |
+| `xcodebuild build` passes                    | □          | □          | □          | □          | □          | □           |
+
+### Android Apps (kotlin-platform-sdk)
+
+| Check                                               | LysnrAI                   | ChronoMind | MindLyst         | JarvisJr | Auth App                   |
+| --------------------------------------------------- | ------------------------- | ---------- | ---------------- | -------- | -------------------------- |
+| `platform/Config.kt`                                | □ (exists)                | □ (exists) | □ (exists)       | □        | □ (exists as AppConfig.kt) |
+| `platform/PlatformModule.kt` (Hilt/Koin)            | □ (exists)                | □ (exists) | □ (exists, Koin) | □        | □                          |
+| `BLAuthClient` wired                                | □ (intentionally skipped) | □          | □ (exists)       | □        | □                          |
+| `BLTelemetryClient` wired                           | □ (exists)                | □          | □ (exists)       | □        | N/A                        |
+| `BLFeatureFlagClient` wired                         | □ (exists)                | □          | □ (exists)       | □        | N/A                        |
+| `BLKillSwitchClient` wired                          | □ (exists)                | □ (exists) | □ (exists)       | □        | N/A                        |
+| No hand-rolled HttpURLConnection for platform calls | □                         | □          | □ (exists)       | □        | □                          |
+| `./gradlew compileDebugKotlin` passes               | □                         | □          | □                | □        | □                          |
+
+### React Native / Expo Apps (@bytelyst/\*)
+
+| Check                                       | NomGap     | NoteLett   | FlowMonk   |
+| ------------------------------------------- | ---------- | ---------- | ---------- |
+| `@bytelyst/auth-client`                     | □ (exists) | □ (exists) | □ (exists) |
+| `@bytelyst/platform-client`                 | □ (exists) | □ (exists) | □ (exists) |
+| `@bytelyst/telemetry-client`                | □ (exists) | □ (exists) | □          |
+| `@bytelyst/feature-flag-client`             | □ (exists) | □ (exists) | □ (exists) |
+| `@bytelyst/kill-switch-client`              | □ (exists) | □ (exists) | □ (exists) |
+| `@bytelyst/offline-queue`                   | □ (exists) | □ (exists) | □ (exists) |
+| `@bytelyst/blob-client`                     | □ (exists) | □ (exists) | □          |
+| `@bytelyst/design-tokens`                   | □ (exists) | □ (exists) | □          |
+| No hand-rolled `fetch()` for platform calls | □          | □ (exists) | □          |
+| `npm run typecheck` passes                  | □          | □          | □          |
+
+---
+
+## Execution Order Recommendation
+
+```
+Week 1 (HIGH priority):
+  Phase 1: ChronoMind Android (1 day)
+  Phase 2: JarvisJr Android (1 day)
+
+Week 2 (MEDIUM priority):
+  Phase 3: FlowMonk Mobile RN (0.5 day)
+  Phase 5: NomGap RN (0.5 day)
+  Phase 4: LysnrAI Android (1 day)
+
+Week 3 (MEDIUM priority):
+  Phase 6: LysnrAI iOS (1 day)
+  Phase 7: Auth App Android (0.5 day)
+
+Week 4 (LOW priority + cleanup):
+  Phase 8: Auth App iOS (0.5 day)
+  Phase 9A: ChronoMind iOS — Config + KillSwitch (0.5 hour)
+  Phase 9B: NoteLett Mobile — diagnostics-client (0.5 hour)
+  Phase 9C: MindLyst iOS — PlatformServiceClient + Config + KillSwitch + CrashReporter (1 hour)
+  Phase 9D: JarvisJr iOS — PlatformSyncManager (0.5 hour)
+  Final verification matrix sign-off
+```
+
+---
+
+## Notes
+
+- **MindLyst iOS** (`mindlyst-native/iosApp/`) has **26 Swift files** including 4 Platform/ SDK wrappers (`AuthService`, `KeychainHelper`, `TelemetryService`, `FeatureFlagService`), Screens, Models, Services, Navigation, Widgets, and ShareExtension. **Minor gap:** `Services/PlatformServiceClient.swift` is a hand-rolled URLSession client for platform-service dev wiring — should be migrated to use `BLPlatformClient` via a Platform/ wrapper. Also missing: `KillSwitchService`, `CrashReporter`, `Config.swift`.
+- **MindLyst Android** (`mindlyst-native/androidApp/`) uses Koin DI (not Hilt). `platform/Config.kt` and `platform/PlatformModule.kt` exist. Provides **all 6 SDK components** (`BLPlatformConfig`, `BLSecureStore`, `BLAuthClient`, `BLTelemetryClient`, `BLFeatureFlagClient`, `BLKillSwitchClient`) via Koin module. No gaps.
+- **PeakPulse iOS** is the cleanest iOS app — full Platform/ directory with 9 wrappers including `DiagnosticsService`. No gaps.
+- **JarvisJr iOS** has a clean Platform/ directory with 7 wrappers. **Minor gap:** `Shared/Cloud/PlatformSyncManager.swift` uses raw URLSession — should be migrated to `BLSyncEngine` or `BLPlatformClient`.
+- **TextCleanupService** (LysnrAI) and other LLM-specific services that use URLSession for OpenAI/Azure calls are intentionally product-specific and should NOT be migrated to platform SDK.
+- **CertificatePinning** is a security feature that may need to stay product-specific. Evaluate during Phase 4/6 whether it's worth adding to the SDK.
+- **LysnrAI Android `AuthViewModel`** is intentionally kept hand-rolled (DataStore, keyboard bridging, CloudSync integration are too LysnrAI-specific for `BLAuthClient`). This is a conscious design decision, not a gap.