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docs(phase-44): complete phase execution
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‎.planning/ROADMAP.md‎

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| 41. Database Foundation | 2/2 | Complete | 2026-03-13 | - |
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| 42. Backend Pipeline | 2/2 | Complete | 2026-03-13 | - |
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| 43. Deck Builder Metadata | 2/2 | Complete | 2026-03-13 | - |
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| 44. Mobile Discovery | 2/2 | Complete | 2026-03-16 | - |
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| 44. Mobile Discovery | 2/2 | Complete | 2026-03-16 | - |
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*Roadmap created: 2026-01-29*

‎.planning/STATE.md‎

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milestone_name: Deck Discovery
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status: completed
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stopped_at: Completed 44-02-PLAN.md
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last_updated: "2026-03-16T10:59:41.974Z"
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last_updated: "2026-03-16T11:04:16.054Z"
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last_activity: 2026-03-16 — Plan 44-02 executed (Discovery UI + device verification)
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progress:
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total_phases: 4

‎.planning/phases/44-mobile-discovery/44-VERIFICATION.md‎

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---
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phase: 44-mobile-discovery
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verified: 2026-03-16T11:30:00Z
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status: passed
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score: 15/15 must-haves verified
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re_verification: false
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---
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# Phase 44: Mobile Discovery Verification Report
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**Phase Goal:** Mobile users can discover shared decks via search, browse by category, and subscribe to study them
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**Verified:** 2026-03-16T11:30:00Z
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**Status:** passed
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**Re-verification:** No — initial verification
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---
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## Goal Achievement
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### Observable Truths
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All truths drawn from the combined must_haves of Plan 01 and Plan 02.
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#### Plan 01 Truths
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| # | Truth | Status | Evidence |
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|---|-------|--------|----------|
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| 1 | searchDecks function calls search_decks RPC with query, tag, limit, offset parameters and returns typed results | VERIFIED | discovery.ts:85 POSTs to `/rest/v1/rpc/search_decks` with `p_query`, `p_tag`, `p_limit`, `p_offset`; maps response to `DeckSearchResult[]` |
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| 2 | subscribeToDeck inserts a user_repositories row with subfolder_path via Supabase REST API | VERIFIED | discovery.ts:143 POSTs to `/rest/v1/user_repositories`; body includes `user_id`, `repository_id`, `subfolder_path`; Prefer: return=minimal |
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| 3 | unsubscribeFromDeck deletes the user_repositories row matching user_id + repository_id + subfolder_path | VERIFIED | discovery.ts:188 DELETEs from `/rest/v1/user_repositories?user_id=eq.${userId}&repository_id=eq.${repositoryId}&subfolder_path=eq.${encodeURIComponent(subfolderPath)}` |
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| 4 | getUserDeckSubscriptions returns subscriptions enriched with display_name from deck_index | VERIFIED | discovery.ts:226-298: two-step fetch (user_repositories then deck_index), Map lookup keyed by `repository_id:subfolder_path`, fallback title-case |
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| 5 | All discovery-related i18n keys exist in both EN and IT with correct interpolation variables | VERIFIED | en.ts:186-204 and it.ts:189-207 — 13 keys each in `discovery` section plus `navigation.discovery`; %{name} and %{count} present in both |
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#### Plan 02 Truths
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| # | Truth | Status | Evidence |
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|---|-------|--------|----------|
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| 6 | A 4th bottom tab with compass icon opens the Discovery screen | VERIFIED | MainNavigator.tsx:87-100 — `Tab.Screen name="Discovery" component={DiscoveryScreen}` with `compass`/`compass-outline` Ionicons |
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| 7 | Typing in the search bar triggers debounced search (300ms) returning deck cards | VERIFIED | DiscoveryScreen.tsx:141-153 — `debounceRef` + `setTimeout(..., 300)` cleared on each keystroke; calls `fetchDecks` |
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| 8 | Tapping a tag chip filters results to that tag; tapping All clears the tag filter | VERIFIED | TagChipBar.tsx:50-73 — individual tag chips; pressing All calls `onSelectTag(null)`; TagChipBar used in DiscoveryScreen with `handleTagSelect` |
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| 9 | Search text and tag combine with AND logic | VERIFIED | DiscoveryScreen.tsx:56-77 — `fetchDecks(query, tag)` passes both to `searchDecks(query || undefined, tag || undefined)`; RPC handles AND in WHERE clause |
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| 10 | Already-subscribed decks show green checkmark instead of [+] button | VERIFIED | DeckCard.tsx:93-95 — `name={isSubscribed ? 'checkmark-circle' : 'add-circle-outline'}`, `color={isSubscribed ? '#10b981' : colors.primary}` |
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| 11 | Tapping [+] subscribes with optimistic UI swap + success toast | VERIFIED | DiscoveryScreen.tsx:165-196 — adds key to `subscribedKeys` Set immediately, calls `Toast.show` success, then `subscribeToDeck`; reverts on error |
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| 12 | Tapping checkmark shows confirmation dialog; confirming unsubscribes with toast | VERIFIED | DiscoveryScreen.tsx:199-245 — `Alert.alert` with `unsubscribeTitle`, `unsubscribeBody`; onPress removes from Set, shows toast, calls `unsubscribeFromDeck` |
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| 13 | Empty states display correctly: no decks (library icon), no results (search icon + clear button) | VERIFIED | DiscoveryScreen.tsx:255-277 — `library-outline` icon for no decks; `search-outline` + `clearFilters` action for no results |
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| 14 | Subscribed decks appear in Repos screen with display_name, compass icon, and Shared deck badge | VERIFIED | ReposScreen.tsx:220-259 — `ListFooterComponent` renders `sharedDecks` with `compass-outline` icon, `sub.display_name`, and `t('discovery.sharedDeck')` |
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| 15 | All UI text is localized in both EN and IT | VERIFIED | en.ts:181-204 and it.ts:184-207 — all discovery keys present with proper Italian translations; navigation.discovery in both |
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**Score:** 15/15 truths verified
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---
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## Required Artifacts
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| Artifact | Expected | Lines | Status | Details |
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|----------|----------|-------|--------|---------|
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| `packages/core/src/supabase/discovery.ts` | Discovery data layer: searchDecks, subscribeToDeck, unsubscribeFromDeck, getUserDeckSubscriptions, getLanguageFlag, DeckSearchResult, DeckSubscription | 298 | VERIFIED | All 5 functions + 2 types exported; LANGUAGE_FLAGS map present; 409-as-success implemented; two-step enrichment present |
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| `packages/core/src/index.ts` | Re-exports discovery functions | 95 | VERIFIED | Lines 82-91: exports all 5 functions + 2 types `from './supabase/discovery'` |
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| `apps/android/i18n/en.ts` | English discovery strings | 305 | VERIFIED | `navigation.discovery: 'Discover'` at line 184; `discovery:` section at line 186 with 13 keys |
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| `apps/android/i18n/it.ts` | Italian discovery strings | 295 | VERIFIED | `navigation.discovery: 'Scopri'` at line 187; `discovery:` section at line 189 with 13 keys; satisfies Translations type |
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| `apps/android/navigation/MainNavigator.tsx` | 4th Discovery tab with compass icon | 117 | VERIFIED | Line 89: `component={DiscoveryScreen}`; compass/compass-outline icons; `MainTabParamList` includes `Discovery: undefined` |
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| `apps/android/screens/DiscoveryScreen.tsx` | Discovery screen (min 100 lines) | 388 | VERIFIED | Full implementation: search, tags, FlatList, subscribe/unsubscribe flows, empty states |
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| `apps/android/components/DeckCard.tsx` | Deck result card (min 50 lines) | 165 | VERIFIED | All 4 rows: flag+name+count, description, tags (up to 3 + overflow), author+subscribe button |
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| `apps/android/components/TagChipBar.tsx` | Tag chip bar (min 30 lines) | 94 | VERIFIED | Horizontal ScrollView, All chip, dynamic tag chips, selection state, theme colors |
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| `apps/android/screens/ReposScreen.tsx` | Shared deck entries with display_name, compass icon, badge | 294 | VERIFIED | `ListFooterComponent` with compass-outline, display_name, `t('discovery.sharedDeck')`; deduplicated repos by id |
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| `supabase/migrations/20260316000001_search_decks_prefix_matching.sql` | Prefix matching RPC (fix from device verification) | 101 | VERIFIED | Replaces websearch_to_tsquery with manual prefix matching; handles single and multi-word queries |
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---
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## Key Link Verification
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#### Plan 01 Key Links
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| From | To | Via | Status | Details |
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|------|----|-----|--------|---------|
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| `packages/core/src/supabase/discovery.ts` | search_decks RPC | fetch POST to /rest/v1/rpc/search_decks | WIRED | discovery.ts:85 — exact URL match |
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| `packages/core/src/supabase/discovery.ts` | user_repositories table | fetch POST/DELETE to /rest/v1/user_repositories | WIRED | discovery.ts:143 (POST subscribe), 188 (DELETE unsubscribe), 236 (GET subscriptions) |
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| `packages/core/src/supabase/discovery.ts` | deck_index table | fetch GET to /rest/v1/deck_index for display_name enrichment | WIRED | discovery.ts:261 — exact URL match |
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| `packages/core/src/index.ts` | packages/core/src/supabase/discovery.ts | re-export | WIRED | index.ts:91 — `from './supabase/discovery'` |
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#### Plan 02 Key Links
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| From | To | Via | Status | Details |
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|------|----|-----|--------|---------|
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| `apps/android/screens/DiscoveryScreen.tsx` | @lumio/core searchDecks | import and call | WIRED | Line 14: imported; lines 60, 98: called |
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| `apps/android/screens/DiscoveryScreen.tsx` | @lumio/core subscribeToDeck | import and call | WIRED | Line 15: imported; line 182: called |
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| `apps/android/screens/DiscoveryScreen.tsx` | @lumio/core getUserDeckSubscriptions | import and call on focus | WIRED | Line 17: imported; line 87: called inside useFocusEffect |
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| `apps/android/navigation/MainNavigator.tsx` | apps/android/screens/DiscoveryScreen.tsx | Tab.Screen component prop | WIRED | Line 9: imported; line 89: `component={DiscoveryScreen}` |
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| `apps/android/components/DeckCard.tsx` | @lumio/core getLanguageFlag | import and call | WIRED | Line 4: imported; line 35: `{getLanguageFlag(deck.language)}` |
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---
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## Requirements Coverage
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| Requirement | Source Plan | Description | Status | Evidence |
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|-------------|------------|-------------|--------|----------|
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| DISC-01 | 44-02 | User can access a Discovery tab (4th bottom tab with compass icon) | SATISFIED | MainNavigator.tsx: 4th Tab.Screen with compass-outline icon and DiscoveryScreen component |
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| DISC-02 | 44-01, 44-02 | User can search shared decks via fulltext search bar with 300ms debounce | SATISFIED | searchDecks RPC call in discovery.ts; 300ms debounce in DiscoveryScreen.tsx:149 |
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| DISC-03 | 44-02 | User sees search results with deck name, description, card count, and author | SATISFIED | DeckCard.tsx: all four data points rendered — display_name (row 1), description (row 2), card_count badge (row 1), author (row 4) |
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| DISC-04 | 44-01, 44-02 | User can browse decks by category via horizontal scrollable chip bar | SATISFIED | TagChipBar.tsx horizontal ScrollView; top 10 tags computed from initial deck load in DiscoveryScreen.tsx:103-113 |
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| DISC-05 | 44-01, 44-02 | User can subscribe to a shared deck with single tap | SATISFIED | DeckCard.tsx TouchableOpacity calls onSubscribe; DiscoveryScreen optimistic subscribe with subscribeToDeck call |
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| DISC-06 | 44-01, 44-02 | User can unsubscribe from a shared deck | SATISFIED | Checkmark tap triggers Alert.alert confirmation; confirmed onPress calls unsubscribeFromDeck; 409-as-success handled in discovery.ts |
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| DISC-07 | 44-02 | User sees appropriate empty states (no decks, no results, all subscribed) | SATISFIED | Two EmptyState variants: library-outline for empty library, search-outline + clearFilters for no results |
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| DISC-08 | 44-01, 44-02 | Discovery UI is fully localized in IT and EN | SATISFIED | 13 discovery keys + navigation.discovery in both en.ts and it.ts; interpolation variables %{name} and %{count} match |
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All 8 DISC requirements satisfied. No orphaned requirements found.
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---
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## Anti-Patterns Found
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| File | Line | Pattern | Severity | Impact |
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|------|------|---------|----------|--------|
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| DiscoveryScreen.tsx | 300 | `placeholder=` (TextInput prop) | None | False positive — this is the TextInput `placeholder` prop, not a placeholder implementation |
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No real anti-patterns found. The TextInput `placeholder` match is a legitimate React Native prop.
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---
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## Human Verification Required
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The following items were verified on a physical device during Plan 02 Task 4 (commit b402092), but cannot be re-verified programmatically:
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### 1. 4 Tab Bar Visible on Device
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**Test:** Open app on physical Android device
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**Expected:** Bottom tab bar shows 4 tabs: home (Dashboard), folder (Repos), compass (Discovery), settings (Settings)
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**Why human:** Tab bar rendering, icon appearance, and spacing require visual inspection
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### 2. Search-as-you-type with 300ms Debounce
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**Test:** Type "ita" in the Discovery search bar
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**Expected:** Results appear after ~300ms showing Italian-tagged decks; typing quickly does not fire multiple requests
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**Why human:** Real-time behavior and debounce feel require on-device observation
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**Note:** Prefix matching migration (20260316000001) was verified to fix this on device per SUMMARY.md
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### 3. Optimistic Subscribe Flow
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**Test:** Tap [+] on an unsubscribed deck
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**Expected:** Icon immediately swaps to green checkmark; success toast appears; no perceptible lag
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**Why human:** Optimistic UI timing and toast appearance require visual verification
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### 4. Unsubscribe Confirmation Dialog
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**Test:** Tap green checkmark on a subscribed deck
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**Expected:** Alert.alert dialog appears with "Your study progress will be preserved." message; Cancel and Unsubscribe buttons visible
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**Why human:** Native dialog rendering requires on-device verification
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### 5. Repos Screen Shared Deck Entries
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**Test:** Subscribe to a deck in Discovery, then navigate to Repos tab
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**Expected:** Deck appears with human-readable display_name (e.g. "Italian Vocabulary Pack"), compass icon, and "Shared deck" label — NOT raw folder path
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**Why human:** Cross-tab navigation and display_name enrichment quality require visual inspection
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### 6. Italian Localization
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**Test:** Switch language to IT in Settings; open Discovery tab
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**Expected:** All text in Italian: "Scopri" title, "Cerca mazzi..." placeholder, "Tutti" tag, Italian toast messages
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**Why human:** Locale switching and full Italian string coverage require visual inspection
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---
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## Commits Verified
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All 6 task commits from SUMMARY files were verified in git log:
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| Commit | Description |
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|--------|-------------|
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| ff45012 | feat(44-01): create discovery data layer in @lumio/core |
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| 0a8f2d3 | feat(44-01): add discovery i18n strings for EN and IT |
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| 38a8808 | feat(44-02): add Discovery tab, DeckCard and TagChipBar components |
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| b730da9 | feat(44-02): create DiscoveryScreen with search, tags, subscribe/unsubscribe |
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| ffd2455 | feat(44-02): add shared deck entries to Repos screen |
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| b402092 | fix(44-02): prefix matching for search-as-you-type and dedup repos by id |
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---
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## Gaps Summary
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None. All 15 must-have truths verified, all artifacts substantive and wired, all 8 DISC requirements satisfied.
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The search_decks RPC was updated via migration 20260316000001 during device verification to fix prefix matching (search-as-you-type). This was an appropriate fix, not scope creep, and does not introduce gaps.
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---
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_Verified: 2026-03-16T11:30:00Z_
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_Verifier: Claude (gsd-verifier)_

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