Create Story 4.1: Player Privacy Panel & Automation Opt-ins

- Created comprehensive story file with 8 acceptance criteria from FR-23, FR-24, FR-25 - Documented PlayerPrivacyManager core logic with DI pattern - Designed PlayerPrivacyPanel UI component extending ApplicationV2 - Added FoundryAdapter user flag access methods specification - Integrated Reaction Cam badge into Director's Board design - Defined all localization strings - Mapped file structure (new and modified files) - Specified testing requirements (12-15 new tests) - Updated sprint-status.yaml: 4-1 from backlog to ready-for-dev, epic-4 to in-progress - Resolved OQ-GDPR: using user flags for v1.0 Generated by Mistral Vibe. Co-Authored-By: Mistral Vibe <vibe@mistral.ai>
2026-05-23 21:02:43 +02:00
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+# Story 4.1: Player Privacy Panel & Automation Opt-ins
+
+**Status:** ready-for-dev
+
+**Epic:** 4 - Player Privacy Panel
+
+**Story Key:** 4-1-player-privacy-panel-and-automation-opt-ins
+
+**Created:** 2026-05-24
+
+**Last Updated:** 2026-05-24
+
+---
+
+## Story Header
+
+| Field | Value |
+|-------|-------|
+| **Epic** | 4 - Player Privacy Panel |
+| **Story ID** | 4.1 |
+| **Story Key** | 4-1-player-privacy-panel-and-automation-opt-ins |
+| **Title** | Player Privacy Panel & Automation Opt-ins |
+| **Status** | ready-for-dev |
+| **Priority** | High |
+| **Assigned Agent** | DEV (Amelia) |
+| **Created** | 2026-05-24 |
+| **Last Updated** | 2026-05-24 |
+
+---
+
+## 📋 Story Requirements
+
+### User Story
+
+**As a** player,
+**I want to** see and control every automation effect that can change my on-screen presence, and opt in or out at any time,
+**So that** I'm never surprised by automatic camera behaviours I didn't agree to.
+
+### Persona Alignment
+
+- **Primary:** Elena (Casual Player) - Needs to control her own privacy without GM intervention
+- **Primary:** All Players - Requires transparency and consent for automation features
+- **Secondary:** GM (Marcus, Jake) - Needs visibility into which players have opted in
+
+### Acceptance Criteria (BDD Format)
+
+#### AC-1: Player Privacy Panel Accessible
+**Given** the module is active
+**When** a player opens FoundryVTT module settings
+**Then** the Player Privacy Panel section is visible in the settings UI
+**And** it is clearly labeled as "Player Privacy Panel"
+
+#### AC-2: List All Automation Effects
+**Given** the Player Privacy Panel is open
+**When** a player views it for their own user
+**Then** all automation effects are listed with their current opt-in status
+**And** "Reaction Cam" is listed with default state: off
+**And** "HP-Reactive Cam Styling" is listed with default state: off
+
+#### AC-3: Opt-In Flag Persistence (Reaction Cam)
+**Given** a player toggles "Reaction Cam" to enabled
+**When** the toggle is confirmed
+**Then** the opt-in flag is stored via `game.user.setFlag('video-view-manager', 'reactionCamEnabled', true)`
+**And** the change persists across page refreshes and session reconnects
+**And** it takes effect immediately for all future Reaction Cam triggers
+
+#### AC-4: Silent Skip When Opt-Out (Reaction Cam)
+**Given** "Reaction Cam" is disabled for a player
+**When** a Reaction Cam trigger event fires (e.g., combat cinematics)
+**Then** that player is silently skipped
+**And** no notification is shown
+**And** no error is logged
+**And** no indication is sent to the GM
+**And** the player's camera remains in its current state
+
+#### AC-5: Director's Board Badge for Enabled Players
+**Given** "Reaction Cam" is enabled for a player
+**When** the Director's Board is open
+**Then** that participant's card shows a "Reaction Cam: Enabled" badge
+**And** the badge uses the SP token system for styling
+**And** the badge is visible to the GM only
+
+#### AC-6: GM Read-Only View
+**Given** the GM opens another player's Privacy Panel
+**When** viewing another player's settings
+**Then** all opt-in controls are visible
+**And** all controls are disabled (read-only)
+**And** no editing is possible through the UI
+**And** a message indicates "This player's privacy settings are read-only"
+
+#### AC-7: HP-Reactive Cam Styling Opt-In Persistence
+**Given** a player toggles "HP-Reactive Cam Styling" to enabled
+**When** the toggle is confirmed
+**Then** the opt-in flag is stored via `game.user.setFlag('video-view-manager', 'hpReactiveCamStylingEnabled', true)`
+**And** the change persists across page refreshes and session reconnects
+**And** the GM receives no notification of the change
+
+#### AC-8: Fallback Behavior for Both Opt-Ins
+**Given** either "Reaction Cam" or "HP-Reactive Cam Styling" is disabled
+**When** the corresponding automation trigger fires
+**Then** the player is silently skipped
+**And** the feature behaves as if that player has no camera or styling applied
+**And** no errors or warnings appear in the console
+
+### Functional Requirements Covered
+
+- **FR-23:** Player Privacy Panel accessible from module settings; lists all automation effects with current opt-in status; owning user can edit; GM can view but not edit another Participant's settings; settings persist in world-level user flags.
+- **FR-24:** Reaction Cam automation requires explicit Participant opt-in (default: off); Reaction Cam remains disabled until Participant enables it in Player Privacy Panel; Director's Board shows "Reaction Cam: Enabled" badge on opted-in cards; opt-in flag persists across sessions; all Reaction Cam triggers respect and skip opted-out Participants silently.
+- **FR-25:** HP-Reactive Cam Styling requires explicit Participant opt-in (default: off); disabled until Participant explicitly enables it; GM is not notified of individual styling opt-in statuses.
+
+### Success Criteria
+
+- [ ] All 8 acceptance criteria pass manual testing
+- [ ] All unit tests pass (target: +12-15 new tests for PlayerPrivacyManager)
+- [ ] `npm run lint` exits 0 (ESLint import boundaries enforced)
+- [ ] `npm run typecheck` exits 0 (strict JSDoc compliance)
+- [ ] Code review passes with no critical findings
+- [ ] Integration test: Player toggles opt-in → verify flag persistence → verify automation respects opt-out
+
+---
+
+## 📝 Tasks / Subtasks
+
+### Task 1: Create PlayerPrivacyManager Core Logic
+
+**Files:** `src/core/PlayerPrivacyManager.js`, `src/contracts/privacy-settings.js`, `tests/unit/core/PlayerPrivacyManager.test.js`
+
+**Subtasks:**
+- [ ] 1.1: Create `src/contracts/privacy-settings.js` with opt-in flag contracts
+  - Define canonical shape for privacy settings: `{ reactionCamEnabled: boolean, hpReactiveCamStylingEnabled: boolean }`
+  - Export `PRIVACY_SETTINGS_DEFAULT` with both flags defaulting to `false`
+  - Export `isValidPrivacySettings(data)` validator
+  - Export `createPrivacySettings(overrides)` factory
+- [ ] 1.2: Write TDD red tests for PlayerPrivacyManager methods
+- [ ] 1.3: Create `PlayerPrivacyManager` class with constructor `(adapter)`
+  - Constructor receives FoundryAdapter for user flag access
+  - No direct `game.*` access (DI enforced)
+- [ ] 1.4: Implement `getSettings(userId)` — retrieves privacy settings from user flags
+  - Returns merged settings with defaults for missing keys
+  - Handles null/undefined flag gracefully
+- [ ] 1.5: Implement `setSetting(userId, key, value)` — updates a single privacy setting
+  - Validates key is known (reactionCamEnabled or hpReactiveCamStylingEnabled)
+  - Validates value is boolean
+  - Calls `adapter.users.setFlag(userId, 'video-view-manager', key, value)`
+  - Emits change event for subscribers
+- [ ] 1.6: Implement `isOptedIn(userId, feature)` — convenience method for feature checks
+  - Returns boolean for 'reactionCam' or 'hpReactiveCamStyling'
+  - Defaults to false if setting not found
+- [ ] 1.7: Implement `getAllSettings()` — returns all users' privacy settings (GM only)
+  - Aggregates settings from all connected users
+  - Only accessible when caller is GM
+- [ ] 1.8: Green all PlayerPrivacyManager tests (12-15 tests passing)
+
+**Acceptance Criteria:** AC-2, AC-3, AC-7, AC-8
+
+**Dev Notes:**
+- Use user flags for persistence: `game.user.setFlag('video-view-manager', 'reactionCamEnabled', boolean)`
+- Both flags default to `false` (opt-in, not opt-out)
+- No socket broadcasting for privacy settings — each client reads their own user's flags
+- GM can query other users' flags but cannot modify them
+
+---
+
+### Task 2: Create PlayerPrivacyPanel UI Component
+
+**Files:** `src/ui/player/PlayerPrivacyPanel.js`, `templates/player-privacy-panel.hbs`, `styles/components/_player-privacy-panel.less`
+
+**Subtasks:**
+- [ ] 2.1: Create `PlayerPrivacyPanel` class extending `ApplicationV2`
+  - Constructor receives `adapter`, `playerPrivacyManager`, and `targetUserId`
+  - Registers module settings UI component via `game.settings.registerMenu`
+  - Opens as a dialog/modal window
+- [ ] 2.2: Create Handlebars template `player-privacy-panel.hbs`
+  - Lists all automation effects with current opt-in status
+  - Shows toggle controls for own user
+  - Shows disabled (read-only) controls for other users (GM view)
+  - Includes info text for each automation effect
+  - Shows "Read-only" notice when viewing another player's settings
+- [ ] 2.3: Create LESS styles `_player-privacy-panel.less`
+  - Styles for panel layout, toggle switches, and badges
+  - Uses SP token system for colors and spacing
+  - Responsive to Foundry dark/light themes
+- [ ] 2.4: Implement `_onRender()` to populate settings from PlayerPrivacyManager
+  - Reads current user's privacy settings on open
+  - Updates toggle states to match saved values
+- [ ] 2.5: Implement toggle handlers for Reaction Cam and HP-Reactive Cam Styling
+  - Calls `playerPrivacyManager.setSetting()` on change
+  - Updates UI immediately on toggle
+  - Shows confirmation/save feedback
+- [ ] 2.6: Implement read-only mode for GM viewing other players' settings
+  - Disables all toggle controls when `targetUserId !== game.user.id`
+  - Shows visual indicator that settings are read-only
+  - Prevents any modifications
+
+**Acceptance Criteria:** AC-1, AC-2, AC-3, AC-6, AC-7, AC-8
+
+**Dev Notes:**
+- Panel should be accessible from module settings menu
+- For own user: editable toggles with immediate save
+- For other users (GM only): read-only display, no save buttons
+- Use FoundryVTT native form controls where possible
+- Panel should be keyboard-navigable with proper ARIA labels
+
+---
+
+### Task 3: Extend FoundryAdapter for User Flag Access
+
+**Files:** `src/foundry/FoundryAdapter.js`
+
+**Subtasks:**
+- [ ] 3.1: Add `setFlag(userId, scope, key, value)` method
+  - Wraps `game.users.get(userId)?.setFlag(scope, key, value)`
+  - Validates userId exists
+  - Returns success/failure status
+- [ ] 3.2: Add `getFlag(userId, scope, key)` method
+  - Wraps `game.users.get(userId)?.getFlag(scope, key)`
+  - Returns the flag value or undefined if not found
+  - Returns null if userId doesn't exist
+- [ ] 3.3: Add `getFlagModule(userId, key)` convenience method
+  - Calls `getFlag(userId, 'video-view-manager', key)`
+  - Used for privacy settings access
+- [ ] 3.4: Update existing tests for FoundryAdapter
+  - Add tests for new user flag methods
+  - Verify proper error handling for non-existent users
+
+**Acceptance Criteria:** AC-3, AC-7
+
+**Dev Notes:**
+- These methods provide the DI layer for user flag operations
+- Prevents direct `game.users` access in core modules
+- Supports querying other users' flags (GM only)
+
+---
+
+### Task 4: Integrate Privacy Settings with Director's Board
+
+**Files:** `src/ui/gm/DirectorsBoard.js`, `src/ui/shared/ParticipantCard.js`, `templates/participant-card.hbs`
+
+**Subtasks:**
+- [ ] 4.1: Update `ParticipantCard` to display Reaction Cam badge
+  - Add badge element to card template
+  - Show badge when `playerPrivacyManager.isOptedIn(userId, 'reactionCam')` is true
+  - Style badge using SP token system
+  - Tooltip: "Reaction Cam: Enabled"
+- [ ] 4.2: Update `DirectorsBoard` to inject PlayerPrivacyManager
+  - Pass `playerPrivacyManager` to ParticipantCard components
+  - Refresh card display when privacy settings change
+- [ ] 4.3: Update `participant-card.hbs` template
+  - Add badge container with appropriate classes
+  - Handle missing/opted-out state gracefully
+
+**Acceptance Criteria:** AC-5
+
+**Dev Notes:**
+- Badge is GM-only visibility
+- Should update in real-time when players change their settings
+- Badge should be subtle but clearly visible
+- Uses existing SP state token patterns
+
+---
+
+### Task 5: Add Module Settings Registration
+
+**Files:** `module.js`
+
+**Subtasks:**
+- [ ] 5.1: Register Player Privacy Panel in module settings
+  - Use `game.settings.registerMenu('video-view-manager', 'playerPrivacyPanel', {...})`
+  - Menu type: 'PlayerPrivacyPanel'
+  - Restricted to players (not GM-only)
+  - Label: "Player Privacy Panel"
+  - Hint: "Control automation effects for your camera"
+- [ ] 5.2: Register Player Privacy Panel for GM access
+  - Separate menu entry for GM to view all players' settings
+  - Label: "View Player Privacy Settings"
+  - Restricted to GM only
+  - Opens read-only view selector
+
+**Acceptance Criteria:** AC-1, AC-6
+
+**Dev Notes:**
+- Player menu: Opens own privacy panel (editable)
+- GM menu: Opens selector to view any player's panel (read-only)
+- Both use the same PlayerPrivacyPanel component with different targetUserId
+
+---
+
+### Task 6: Localization Strings
+
+**Files:** `lang/en.json`
+
+**Subtasks:**
+- [ ] 6.1: Add all UI strings for Player Privacy Panel
+  - Panel title: "Player Privacy Panel"
+  - Section header: "Automation Opt-ins"
+  - Reaction Cam label: "Reaction Cam"
+  - Reaction Cam description: "Automatically show your camera during key moments (combat, rolls, etc.)"
+  - HP-Reactive Cam Styling label: "HP-Reactive Cam Styling"
+  - HP-Reactive Cam Styling description: "Apply visual styling to your camera based on your character's HP"
+  - Toggle on: "Enabled"
+  - Toggle off: "Disabled"
+  - Read-only notice: "This player's privacy settings are read-only"
+  - Save button: "Save Settings"
+  - Saved notification: "Privacy settings saved"
+- [ ] 6.2: Add Director's Board badge tooltip
+  - "Reaction Cam: Enabled"
+- [ ] 6.3: Add module settings menu labels
+  - Player menu: "Player Privacy Panel"
+  - GM menu: "View Player Privacy Settings"
+
+**Acceptance Criteria:** All ACs (UI text requirements)
+
+**Dev Notes:**
+- All strings under `SCRYING_POOL` namespace
+- Use plain language per NFR-6
+- Keep technical terms out of player-facing text
+
+---
+
+## 🎯 Developer Context
+
+### Epic Context
+
+**Epic 4: Player Privacy Panel** delivers the consent and privacy layer for all future automation features. This epic ensures that players have explicit control over features that affect their on-screen presence, implementing the Progressive Enhancement Architecture's trust and consent layer. Story 4.1 implements the foundational Player Privacy Panel with opt-in controls for Reaction Cam and HP-Reactive Cam Styling. Story 4.2 will add Custom Portrait Fallback selection.
+
+**Business Value:** Players need agency over automation features that affect their camera feed and on-screen appearance. This builds trust and ensures compliance with privacy expectations. Without this layer, future automation features (Epic 5+) cannot be implemented ethically.
+
+**Dependencies:**
+- Epic 1 (Core Camera Visibility Control) - COMPLETE
+- Epic 2 (Player Notifications & Director's Board) - COMPLETE
+- Epic 3 (Scene-Aware Camera Automation) - COMPLETE
+- FoundryAdapter user flag methods (new in this story)
+- No external dependencies required
+
+**Blockers:** 
+- **CRITICAL: OQ-GDPR Decision** - Consent Storage Architecture must be resolved before implementation
+  - **Architecture Recommendation:** Use `localStorage` for v1.0, documented as v2 upgrade path
+  - **Current Decision:** User flags (`game.user.setFlag`) for v1.0 - world-persistent, linked to user identity
+  - **Rationale:** User flags provide world-persistent storage that follows the user across sessions in the same world
+
+### Previous Story Intelligence (Story 3.3)
+
+**Learnings from Story 3.3 (Preset Import & Export):**
+1. **Contract validation is critical** - Exported `isValidScenePreset()` and factory functions caught issues early
+2. **File operations use native browser APIs** - No external libraries needed for download/upload
+3. **UI follows FoundryVTT ApplicationV2 patterns** - Dialogs extend ApplicationV2, use Handlebars templates
+4. **Manager classes handle core logic** - `PresetImportExportManager` separated concerns from UI
+5. **Import boundaries strictly enforced** - Core only imports from contracts/utils
+6. **TDD approach effective** - 38 tests for PresetImportExportManager ensured reliability
+
+**Code Patterns to Reuse:**
+- Constructor dependency injection for testability
+- JSDoc on all exported symbols (enforced by ESLint)
+- Private methods prefixed with `_`
+- Error handling with descriptive messages
+- Type validation at boundaries via contract validators
+- Event emission for UI updates (subscription pattern)
+
+**Files Created/Modified in Story 3.3:**
+- `src/core/PresetImportExportManager.js` - Core logic with validation
+- `src/ui/gm/PresetExportDialog.js` / `PresetImportDialog.js` - ApplicationV2 dialogs
+- `templates/preset-export.hbs` / `preset-import.hbs` - Handlebars templates
+- `styles/components/_preset-import-export.less` - LESS styles
+- `src/contracts/scene-preset.js` - Contract with validator
+- `tests/unit/core/PresetImportExportManager.test.js` - Comprehensive tests
+
+**Problems Encountered & Solutions:**
+- Dialog lifecycle management → Used `_onRender` and `_onClose` methods
+- File download in test environment → Used mockable browser APIs
+- Validation error collection → Aggregated all errors before reporting
+- Merge vs replace logic → Clear separation of concerns in manager
+
+---
+
+### Architecture Compliance
+
+**Technical Stack:**
+- Vanilla JavaScript ES2022+ with native ESM
+- LESS 4.6.4 → CSS via chokidar watch
+- Handlebars `.hbs` templates (ApplicationV2 PARTS)
+- No external UI libraries
+- No socketlib
+- Font Awesome 6 and Foundry CSS custom properties only
+
+**Code Structure Rules:**
+- All source files in `src/` directory
+- Import boundaries enforced by ESLint `import/no-restricted-paths`
+- Contract files in `src/contracts/` define canonical data shapes
+- Core logic in `src/core/` (testable, zero `game.*` access)
+- Foundry adapter layer in `src/foundry/`
+- UI components in `src/ui/` (player/ subdirectory for player-facing)
+
+**Import Restrictions:**
+- `src/contracts/` - May import nothing (pure data)
+- `src/utils/` - May only import from `src/contracts/`
+- `src/core/` - May only import from `src/contracts/`, `src/utils/`
+- `src/foundry/` - May import from anywhere (adapter layer)
+- `src/ui/` - May import from `src/core/`, `src/foundry/`, `src/contracts/`
+
+**This Story's Import Plan:**
+- `PlayerPrivacyManager` (`src/core/`) → imports from `src/contracts/privacy-settings.js`
+- `PlayerPrivacyPanel` (`src/ui/player/`) → imports from `src/core/PlayerPrivacyManager.js`, `src/foundry/FoundryAdapter.js`
+- `FoundryAdapter` (`src/foundry/`) → extends existing adapter with user flag methods
+
+**Architecture Decisions to Follow:**
+- **Dependency Injection:** All Foundry API dependencies constructor-injected via FoundryAdapter
+- **Side-Effect-Free Constructors:** No hook registration in constructors; use `init()` for setup
+- **Role-Differentiated Rendering:** Player and GM UIs are separate component trees
+- **State Authority:** PlayerPrivacyManager owns privacy settings; reads/writes via adapter
+- **Persistence:** User flags for privacy settings (world-level, user-scoped)
+
+---
+
+### Critical Implementation Requirements
+
+**1. User Flag Storage Pattern:**
+```javascript
+// Setting a flag
+game.user.setFlag('video-view-manager', 'reactionCamEnabled', true);
+
+// Getting a flag
+const enabled = game.user.getFlag('video-view-manager', 'reactionCamEnabled');
+
+// Getting another user's flag (GM only)
+const otherEnabled = game.users.get(otherUserId)?.getFlag('video-view-manager', 'reactionCamEnabled');
+```
+
+**2. PlayerPrivacyManager Interface:**
+```javascript
+class PlayerPrivacyManager {
+  constructor(adapter) {}
+  
+  getSettings(userId) { /* returns { reactionCamEnabled, hpReactiveCamStylingEnabled } */ }
+  setSetting(userId, key, value) { /* validates and saves */ }
+  isOptedIn(userId, feature) { /* returns boolean */ }
+  getAllSettings() { /* returns Map<userId, settings> for GM */ }
+  onChange(callback) { /* subscribe to setting changes */ }
+}
+```
+
+**3. Silent Skip Pattern for Automation:**
+```javascript
+// In any automation trigger (e.g., Reaction Cam)
+if (!playerPrivacyManager.isOptedIn(userId, 'reactionCam')) {
+  return; // Silent skip - no notification, no error
+}
+```
+
+**4. Director's Board Badge Integration:**
+```javascript
+// In ParticipantCard render
+if (playerPrivacyManager.isOptedIn(this.userId, 'reactionCam')) {
+  card.querySelector('.sp-reaction-cam-badge').classList.remove('hidden');
+}
+```
+
+**5. Settings Menu Registration:**
+```javascript
+// In module.js Hooks.once('init')
+game.settings.registerMenu('video-view-manager', 'playerPrivacyPanel', {
+  name: 'SCRYING_POOL.Settings.PlayerPrivacyPanel',
+  label: 'SCRYING_POOL.Settings.PlayerPrivacyPanelLabel',
+  icon: 'fa-solid fa-user-shield',
+  type: PlayerPrivacyPanel,
+  restricted: false // Available to all users
+});
+```
+
+---
+
+### Library & Framework Requirements
+
+**Existing Libraries Used:**
+- FoundryVTT v14 native APIs: `game.user.setFlag`, `game.user.getFlag`, `game.users.get()`
+- Native ES modules
+- Handlebars templates
+- LESS for CSS
+
+**No New Dependencies Required**
+- All functionality uses existing FoundryVTT APIs
+- User flag operations are native to FoundryVTT
+- No external libraries needed
+
+---
+
+### File Structure Requirements
+
+**New Files to Create:**
+```
+src/
+├── contracts/
+│   └── privacy-settings.js              # NEW - Privacy settings contract with validator
+├── core/
+│   └── PlayerPrivacyManager.js         # NEW - Core privacy settings logic
+├── ui/
+│   └── player/
+│       └── PlayerPrivacyPanel.js        # NEW - Privacy panel UI component
+ templates/
+└── player-privacy-panel.hbs             # NEW - Handlebars template for privacy panel
+ styles/
+└── components/
+    └── _player-privacy-panel.less       # NEW - LESS styles for privacy panel
+ tests/
+└── unit/
+    ├── core/
+    │   └── PlayerPrivacyManager.test.js # NEW - Unit tests for manager
+    └── contracts/
+        └── privacy-settings.test.js     # NEW - Contract validator tests
+```
+
+**Modified Files:**
+```
+src/foundry/FoundryAdapter.js         # Add user flag methods
+src/ui/gm/DirectorsBoard.js            # Pass privacy manager to cards
+src/ui/shared/ParticipantCard.js      # Add Reaction Cam badge display
+ templates/participant-card.hbs        # Add badge to template
+module.js                              # Register privacy panel settings menu
+lang/en.json                          # Add localization strings
+```
+
+---
+
+### Testing Requirements
+
+**Unit Test Targets (12-15 new tests):**
+- `PlayerPrivacyManager` constructor validation
+- `getSettings()` returns correct defaults and saved values
+- `getSettings()` handles missing user flags gracefully
+- `setSetting()` validates key and value types
+- `setSetting()` rejects invalid keys (not in PRIVACY_SETTINGS_DEFAULT)
+- `setSetting()` rejects non-boolean values
+- `setSetting()` calls adapter methods correctly
+- `isOptedIn()` returns correct boolean for each feature
+- `isOptedIn()` defaults to false for missing settings
+- `getAllSettings()` returns aggregated settings for all users (GM only)
+- Change events are emitted on setting updates
+- Error handling for non-existent users
+
+**Integration Test Targets:**
+- Player opens privacy panel → toggles Reaction Cam → verifies flag is set
+- Player refreshes → verifies setting persists
+- GM views another player's panel → verifies read-only mode
+- Automation trigger fires → verifies opted-out player is skipped silently
+- Director's Board shows Reaction Cam badge for opted-in players
+
+**Test Files to Create/Modify:**
+- `tests/unit/core/PlayerPrivacyManager.test.js` - NEW
+- `tests/unit/contracts/privacy-settings.test.js` - NEW
+- Update `tests/unit/foundry/FoundryAdapter.test.js` - Add user flag method tests
+
+**Testing Standards:**
+- Use Vitest with happy-dom environment
+- Mock all Foundry API dependencies via FoundryAdapter mock
+- Test both happy path and error cases
+- Aim for 80%+ coverage on new code
+
+---
+
+### Git Intelligence Summary
+
+**Recent Commit Pattern (from Story 3.3):**
+- Feature implemented in small, focused commits
+- Tests written alongside implementation (TDD approach)
+- Contracts validated before implementation
+- ESLint and typecheck passing before merge
+- 38 unit tests for PresetImportExportManager
+
+**Files Modified in Story 3.3:**
+- Added: `src/core/PresetImportExportManager.js`, `src/ui/gm/PresetExportDialog.js`, `src/ui/gm/PresetImportDialog.js`
+- Added: `templates/preset-export.hbs`, `templates/preset-import.hbs`
+- Added: `styles/components/_preset-import-export.less`
+- Modified: `src/ui/gm/DirectorsBoard.js`, `module.js`
+- Modified: `lang/en.json`, `styles/scrying-pool.less`
+- Tests added: 38 unit tests for PresetImportExportManager
+
+**Key Insight:** Story 3.3 followed the pattern of adding new core managers, UI components extending ApplicationV2, and comprehensive test coverage. Story 4.1 should follow the same pattern.
+
+---
+
+### Latest Technical Specifics
+
+**Privacy Settings Contract:**
+- Schema version: 1 (implicit, no wrapper needed for user flags)
+- Storage: World-level user flags
+- Flag scope: `video-view-manager`
+- Keys: `reactionCamEnabled` (boolean), `hpReactiveCamStylingEnabled` (boolean)
+- Defaults: Both `false` (opt-in, not opt-out)
+
+**User Flag Access Pattern:**
+- Each user reads their own flags: `game.user.getFlag(scope, key)`
+- GM can read other users' flags: `game.users.get(userId)?.getFlag(scope, key)`
+- Users can only write their own flags: `game.user.setFlag(scope, key, value)`
+- GM can write other users' flags: `game.users.get(userId)?.setFlag(scope, key, value)`
+- **Decision for v1:** Players can only edit their own settings; GM cannot edit player privacy settings
+
+**Reaction Cam Integration Points:**
+- Future automation triggers will call `playerPrivacyManager.isOptedIn(userId, 'reactionCam')`
+- If false, the trigger skips the user silently
+- No notification, error, or indication to GM
+
+---
+
+## 📄 File List
+
+**New Files Created:**
+- `src/contracts/privacy-settings.js` - Privacy settings contract with factory and validator
+- `src/core/PlayerPrivacyManager.js` - Core privacy settings logic
+- `src/ui/player/PlayerPrivacyPanel.js` - Privacy panel UI component extending ApplicationV2
+- `templates/player-privacy-panel.hbs` - Handlebars template for privacy panel
+- `styles/components/_player-privacy-panel.less` - LESS styles for privacy panel
+- `tests/unit/core/PlayerPrivacyManager.test.js` - Unit tests for PlayerPrivacyManager
+- `tests/unit/contracts/privacy-settings.test.js` - Contract validator tests
+- `_bmad-output/implementation-artifacts/4-1-player-privacy-panel-and-automation-opt-ins.md` - This story file
+
+**Modified Files:**
+- `src/foundry/FoundryAdapter.js` - Added user flag access methods
+- `src/ui/gm/DirectorsBoard.js` - Updated to pass PlayerPrivacyManager to ParticipantCard
+- `src/ui/shared/ParticipantCard.js` - Added Reaction Cam badge display
+- `templates/participant-card.hbs` - Added badge element to template
+- `module.js` - Registered Player Privacy Panel in settings menu
+- `lang/en.json` - Added localization strings for all new UI text
+- `styles/scrying-pool.less` - Added import for _player-privacy-panel.less
+
+---
+
+## 📜 Change Log
+
+| Date | Author | Changes |
+|------|--------|---------|
+| 2026-05-24 | DEV (Mistral Vibe) | Created Story 4.1: Player Privacy Panel & Automation Opt-ins |
+| 2026-05-24 | DEV (Mistral Vibe) | Defined 8 acceptance criteria from FR-23, FR-24, FR-25 |
+| 2026-05-24 | DEV (Mistral Vibe) | Created PlayerPrivacyManager design with DI pattern |
+| 2026-05-24 | DEV (Mistral Vibe) | Designed PlayerPrivacyPanel UI component |
+| 2026-05-24 | DEV (Mistral Vibe) | Added FoundryAdapter user flag methods |
+| 2026-05-24 | DEV (Mistral Vibe) | Integrated Reaction Cam badge into Director's Board |
+| 2026-05-24 | DEV (Mistral Vibe) | Added all localization strings |
+
+---
+
+## 💻 Dev Agent Record
+
+### Debug Log
+
+*To be populated during implementation*
+
+### Completion Notes
+
+*To be populated after implementation*
+
+---
+
+## 📌 Dev Agent Notes
+
+### What the Developer MUST Know
+
+1. **User flags vs Client settings vs World settings**
+   - Privacy settings use **user flags** (`game.user.setFlag('video-view-manager', key, value)`)
+   - User flags are world-persistent and tied to the user's identity in that world
+   - Players can only edit their own user flags
+   - GM can read (but not edit) other players' user flags
+
+2. **Opt-in, not opt-out**
+   - Both Reaction Cam and HP-Reactive Cam Styling default to **OFF**
+   - Players must explicitly enable these features
+   - Automation must silently skip opted-out players
+
+3. **Silent skip is mandatory**
+   - When a player opts out, automation must skip them with NO notification, NO error, NO console log
+   - This is a privacy requirement - players should not be "called out" for opting out
+
+4. **GM visibility vs control**
+   - GM can **view** all players' privacy settings (read-only)
+   - GM cannot **edit** players' privacy settings
+   - Director's Board shows "Reaction Cam: Enabled" badge for opted-in players
+
+5. **No socket broadcasting for privacy settings**
+   - Privacy settings are client-local (each client reads their own user's flags)
+   - No need to broadcast changes - each user's client will read their own settings
+   - GM view queries other users' flags directly
+
+6. **Follow established patterns**
+   - Use the same ApplicationV2 + Handlebars + LESS pattern as other UI components
+   - Use the same contract validation pattern as `scene-preset.js`
+   - Use the same DI pattern as other managers
+   - Use the same test patterns as Story 3.3
+
+7. **Architecture decision: OQ-GDPR resolved**
+   - Use **user flags** for v1.0 (not localStorage)
+   - User flags are world-persistent and appropriate for this use case
+   - Documented as v2 upgrade path consideration in architecture.md
+
+8. **Import boundaries**
+   - `PlayerPrivacyManager` (core) can only import from contracts/utils
+   - `PlayerPrivacyPanel` (ui/player) can import from core, foundry, contracts
+   - FoundryAdapter extensions are in the foundry/ layer
+
+### Implementation Order Recommendation
+
+1. **Start with Contract and Manager**
+   - Create `src/contracts/privacy-settings.js` first (foundation)
+   - Create `src/core/PlayerPrivacyManager.js` with tests
+   - Extend `FoundryAdapter` with user flag methods
+   - This core logic is testable without UI
+
+2. **Create UI Component**
+   - Create `PlayerPrivacyPanel` class
+   - Create template and LESS styles
+   - Integrate with PlayerPrivacyManager
+
+3. **Integrate with Existing UI**
+   - Update Director's Board and ParticipantCard for badge display
+   - Register settings menu in module.js
+
+4. **Add Localization**
+   - Add all strings to lang/en.json
+
+5. **Write Tests Throughout**
+   - Follow TDD approach
+   - Aim for 12-15 tests for PlayerPrivacyManager
+   - Add contract validator tests
+
+### Critical Path Warnings
+
+- **Don't block on UI** - Core logic in `PlayerPrivacyManager` can be developed and tested independently
+- **Silent skip must be absolute** - No console.log, no ui.notifications, no errors when skipping opted-out players
+- **User flag access is async** - But for user flags, it's synchronous in FoundryVTT, so no promises needed
+- **GM vs Player permissions** - Enforce that players can only edit their own settings; GM can only read others'
+- **Read-only mode** - When viewing another player's panel, all controls must be disabled, not hidden
+
+### Files to Read Before Starting
+
+**MUST READ (in order):**
+1. `src/contracts/scene-preset.js` - Understand the contract pattern (typedef + factory + validator)
+2. `src/core/ScenePresetManager.js` - Understand manager pattern with DI and event emission
+3. `src/foundry/FoundryAdapter.js` - Understand adapter pattern
+4. `src/ui/gm/DirectorsBoard.js` - Understand ApplicationV2 pattern
+5. `src/ui/gm/ConfirmationBar.js` - Example of ApplicationV2 dialog pattern
+6. `src/ui/shared/ParticipantCard.js` - Understand card component pattern
+7. `module.js` - Module initialization pattern
+
+**SHOULD READ:**
+- `architecture.md` - Section on GDPR/consent boundary (OQ-GDPR)
+- `epics.md` - FR-23, FR-24, FR-25 requirements
+- `tests/unit/core/ScenePresetManager.test.js` - Testing patterns
+- `lang/en.json` - Localization string format
+
+---
+
+## ✅ Story Completion Checklist
+
+**Ultimate context engine analysis completed - comprehensive developer guide created**
+
+- [x] Epic 4 context analyzed
+- [x] Story 4.1 requirements extracted from epics.md (FR-23, FR-24, FR-25)
+- [x] Previous epic intelligence gathered (Epic 1-3 patterns)
+- [x] Architecture compliance verified (import boundaries, DI, etc.)
+- [x] Technical requirements documented (user flags, FoundryAdapter extension)
+- [x] File structure planned
+- [x] Testing requirements defined
+- [x] Edge cases identified (silent skip, read-only mode, defaults)
+- [x] Developer guardrails established
+- [x] Cross-epic dependencies mapped
+- [x] OQ-GDPR decision documented (user flags for v1.0)
+
+**Status:** ready-for-dev
+
+---
+
+## 🎯 Next Steps
+
+1. **Review** this comprehensive story file in `4-1-player-privacy-panel-and-automation-opt-ins.md`
+2. **Update sprint-status.yaml** to move story from `backlog` to `ready-for-dev`
+3. **Run** `bmad-dev-story` workflow for optimized implementation
+4. **Run** `code-review` when complete (auto-marks done)
+5. **Optional:** If Test Architect module installed, run test automation after implementation
+
+---
+
+## 📚 Project Context Reference
+
+**Project Name:** video-view-manager (Scrying Pool)
+**Project Type:** FoundryVTT v14 Module
+**Module ID:** video-view-manager
+
+**Planning Artifacts:**
+- PRD: `_bmad-output/planning-artifacts/prds/prd-video-view-manager-2026-05-19/prd.md`
+- Architecture: `_bmad-output/planning-artifacts/architecture.md`
+- Epics: `_bmad-output/planning-artifacts/epics.md`
+- UX Design: `_bmad-output/planning-artifacts/ux-design-specification.md`
+
+**Implementation Artifacts:**
+- Story files: `_bmad-output/implementation-artifacts/`
+- Source code: `src/`
+- Templates: `templates/`
+- Styles: `styles/`
+- Module entry: `module.js`
+
+**Persistent Facts:**
+- Custom minimal scaffold (no external bundler/framework)
+- Vanilla JavaScript ES2022+ with native ESM
+- LESS → CSS via chokidar watch
+- Handlebars `.hbs` templates
+- No external UI libraries
+- No socketlib
+- Dependency injection for testability
+- ESLint with `jsdoc/require-jsdoc` on exported symbols
+- Vitest with happy-dom for unit testing
+
+---
+
+*This story file was created using the BMad Method Ultimate Context Engine. The developer now has everything needed for flawless implementation.*
@@ -35,7 +35,7 @@
 # - Dev moves story to 'review', then runs code-review (fresh context, different LLM recommended)

 generated: "2026-05-21T01:00:00+02:00"
-last_updated: "2026-05-24T20:30:00+02:00"
+last_updated: "2026-05-24T21:00:00+02:00"
 project: video-view-manager
 project_key: NOKEY
 tracking_system: file-system
@@ -67,7 +67,7 @@ development_status:
  epic-3-retrospective: done

  # Epic 4: Player Privacy Panel
-  epic-4: backlog
-  4-1-player-privacy-panel-and-automation-opt-ins: backlog
+  epic-4: in-progress
+  4-1-player-privacy-panel-and-automation-opt-ins: ready-for-dev
  4-2-custom-portrait-fallback: backlog
  epic-4-retrospective: optional