docs: update cover image serving plan

This commit is contained in:
2026-02-27 10:17:48 -05:00
parent b834cbe40a
commit 18332109fb
2 changed files with 375 additions and 427 deletions
+375 -10
View File
@@ -357,7 +357,7 @@ func (h *OPDSHandler) GetCoverImage(c echo.Context) error {
}
```
**Note**: OPDSHandler already has `libraryService` injected, so it can use the same resolution logic.
**Note**: OPDSHandler uses `ResolveMediaPath()` to resolve to **filesystem path** (not URL) because OPDS serves files directly from the local filesystem. This is different from API handlers which resolve to `/uploads/library-{id}/...` URLs.
**If OPDSHandler doesn't have libraryService**, add it:
@@ -379,15 +379,378 @@ func NewOPDSHandler(db *database.Queries, libraryService *services.LibraryServic
---
## Phase 7: Frontend - No Changes Needed (SSR)
## Phase 7: Update ALL Handlers to Resolve URLs in API Responses
The existing frontend code should work without modification:
Every handler that returns `cover_image_path` or `file_path` in API responses must resolve the relative path to a full URL before sending to the client.
- **dashboard.templ**: Uses `item.CoverImagePath` directly in SSR
- **dashboard.ts**: Uses `book.cover_image_path` from API response
- **bookshelf.ts**: Uses `book.cover_image_path` from API response
### URL Resolution Flow
**Note**: Backend resolves URLs when building API responses, so frontend just uses the URL directly - no extra requests.
1. **Database stores**: Relative path (e.g., `Author/Book/cover.jpg`)
2. **Handler fetches**: Gets relative path from DB (as pgtype.Text)
3. **Handler resolves**: Calls `ResolveCoverURL()` → returns `/uploads/library-{id}/Author/Book/cover.jpg`
4. **Handler replaces**: Sets resolved URL string in response (not pgtype.Text)
5. **Frontend/mobile**: Uses URL directly (authenticated via JWT)
### Step 1: Add URL Resolution Helper to MediaHandler
**File**: `internal/handlers/media.go`
Add these helper methods after the `NewMediaHandler` function (around line 100):
```go
// ResolveCoverURL resolves a relative cover path to a full URL for API responses
func (mh *MediaHandler) ResolveCoverURL(libraryID pgtype.UUID, coverPath pgtype.Text) string {
if !coverPath.Valid || coverPath.String == "" {
return ""
}
return mh.resolveMediaURL(libraryID, coverPath.String)
}
// ResolveFileURL resolves a relative file path to a full URL for API responses
func (mh *MediaHandler) ResolveFileURL(libraryID pgtype.UUID, filePath pgtype.Text) string {
if !filePath.Valid || filePath.String == "" {
return ""
}
return mh.resolveMediaURL(libraryID, filePath.String)
}
// resolveMediaURL is the internal helper that does the actual resolution
func (mh *MediaHandler) resolveMediaURL(libraryID pgtype.UUID, relativePath string) string {
// Already a full URL? Return as-is
if strings.HasPrefix(relativePath, "/uploads/") {
return relativePath
}
// Already absolute path? Convert to URL format (backward compatibility)
// Note: This loses library ID info, but existing data won't have it
if filepath.IsAbs(relativePath) {
return relativePath
}
// Resolve relative path to URL format
libraryIDStr := libraryID.Bytes.String()
return fmt.Sprintf("/uploads/library-%s/%s", libraryIDStr, relativePath)
}
```
**Note**: Add `"strings"` and `"fmt"` to the imports if not already present.
---
### Step 2: Update collections.go - GetCollectionBooks (line ~199)
**File**: `internal/handlers/collections.go`
**Current code** (lines 193-201):
```go
bookList := make([]BookInfo, 0, len(books))
for _, book := range books {
bookList = append(bookList, BookInfo{
MediaItemID: uuid.UUID(book.MediaItemID.Bytes).String(),
Title: book.Title,
Author: textToString(book.Author),
CoverImagePath: textToString(book.CoverImagePath),
})
}
```
**New code**:
```go
bookList := make([]BookInfo, 0, len(books))
for _, book := range books {
bookList = append(bookList, BookInfo{
MediaItemID: uuid.UUID(book.MediaItemID.Bytes).String(),
Title: book.Title,
Author: textToString(book.Author),
CoverImagePath: h.resolveCoverURL(book.LibraryID, book.CoverImagePath),
})
}
```
**Add helper method** to CollectionHandler struct (near line 10):
```go
// resolveCoverURL resolves a relative cover path to a full URL
func (h *CollectionHandler) resolveCoverURL(libraryID pgtype.UUID, coverPath pgtype.Text) string {
if !coverPath.Valid || coverPath.String == "" {
return ""
}
// Already a full URL? Return as-is
if strings.HasPrefix(coverPath.String, "/uploads/") {
return coverPath.String
}
// Already absolute path? Return as-is (backward compatibility)
if filepath.IsAbs(coverPath.String) {
return coverPath.String
}
// Resolve relative path to URL format
libraryIDStr := libraryID.Bytes.String()
return fmt.Sprintf("/uploads/library-%s/%s", libraryIDStr, coverPath.String)
}
```
**Add imports** if not present: `"fmt"`, `"path/filepath"`, `"strings"`
---
### Step 3: Update collections.go - CheckMatchRules (line ~626)
**File**: `internal/handlers/collections.go`
**Current code** (lines 620-641):
```go
var matches []BookMatch
for _, item := range mediaItems {
matchReason := h.checkRulesAgainstBook(item, req.Rules)
if matchReason != "" {
coverPath := ""
if item.CoverImagePath.Valid {
coverPath = item.CoverImagePath.String
}
author := ""
if item.Author.Valid {
author = item.Author.String
}
matches = append(matches, BookMatch{
MediaItemID: uuid.UUID(item.ID.Bytes).String(),
Title: item.Title,
Author: author,
CoverImagePath: coverPath,
MatchReason: matchReason,
})
}
}
```
**New code**:
```go
var matches []BookMatch
for _, item := range mediaItems {
matchReason := h.checkRulesAgainstBook(item, req.Rules)
if matchReason != "" {
author := ""
if item.Author.Valid {
author = item.Author.String
}
matches = append(matches, BookMatch{
MediaItemID: uuid.UUID(item.ID.Bytes).String(),
Title: item.Title,
Author: author,
CoverImagePath: h.resolveCoverURL(item.LibraryID, item.CoverImagePath),
MatchReason: matchReason,
})
}
}
```
---
### Step 4: Update collections.go - ListCollectionBooks (line ~935)
**File**: `internal/handlers/collections.go`
**Current code** (lines 925-954 - the entire function):
```go
return database.ListMediaItemsRow{
ID: item.ID,
LibraryID: item.LibraryID,
Title: item.Title,
Author: item.Author,
Isbn: item.Isbn,
Description: item.Description,
FilePath: item.FilePath,
FileSize: item.FileSize,
MimeType: item.MimeType,
CoverImagePath: item.CoverImagePath,
// ... rest of fields
}
```
**New code**:
```go
return database.ListMediaItemsRow{
ID: item.ID,
LibraryID: item.LibraryID,
Title: item.Title,
Author: item.Author,
Isbn: item.Isbn,
Description: item.Description,
FilePath: pgtype.Text{String: h.resolveFileURL(item.LibraryID, item.FilePath), Valid: item.FilePath.Valid},
FileSize: item.FileSize,
MimeType: item.MimeType,
CoverImagePath: pgtype.Text{String: h.resolveCoverURL(item.LibraryID, item.CoverImagePath), Valid: item.CoverImagePath.Valid},
// ... rest of fields
}
```
**Add helper method** for file URL resolution:
```go
// resolveFileURL resolves a relative file path to a full URL
func (h *CollectionHandler) resolveFileURL(libraryID pgtype.UUID, filePath pgtype.Text) string {
if !filePath.Valid || filePath.String == "" {
return ""
}
if strings.HasPrefix(filePath.String, "/uploads/") {
return filePath.String
}
if filepath.IsAbs(filePath.String) {
return filePath.String
}
libraryIDStr := libraryID.Bytes.String()
return fmt.Sprintf("/uploads/library-%s/%s", libraryIDStr, filePath.String)
}
```
---
### Step 5: Update progress.go - two locations (lines ~288 and ~359)
**File**: `internal/handlers/progress.go`
First, add helper methods to ProgressHandler struct (find struct definition and add after it):
```go
// resolveCoverURL resolves a relative cover path to a full URL
func (h *ProgressHandler) resolveCoverURL(libraryID pgtype.UUID, coverPath pgtype.Text) string {
if !coverPath.Valid || coverPath.String == "" {
return ""
}
if strings.HasPrefix(coverPath.String, "/uploads/") {
return coverPath.String
}
if filepath.IsAbs(coverPath.String) {
return coverPath.String
}
libraryIDStr := libraryID.Bytes.String()
return fmt.Sprintf("/uploads/library-%s/%s", libraryIDStr, coverPath.String)
}
```
**Location 1 - GetReadingProgress function** (around line 286-289):
**Current code**:
```go
coverPath := ""
if mediaItem.CoverImagePath.Valid {
coverPath = mediaItem.CoverImagePath.String
}
```
**New code** (remove the manual resolution, use helper):
```go
coverPath := h.resolveCoverURL(mediaItem.LibraryID, mediaItem.CoverImagePath)
```
**Location 2 - GetAllReadingProgress function** (around line 357-360):
**Current code**:
```go
coverPath := ""
if mediaItem.CoverImagePath.Valid {
coverPath = mediaItem.CoverImagePath.String
}
```
**New code**:
```go
coverPath := h.resolveCoverURL(mediaItem.LibraryID, mediaItem.CoverImagePath)
```
---
### Step 6: Update media.go - GetMediaItem and ListMediaItems
**File**: `internal/handlers/media.go`
The current implementation returns raw database rows directly. We need to convert them to API-safe responses with resolved URLs.
**Option A: Quick fix** - Modify the response before returning (lines 609, 620, 639)
For `ListMediaItems` (around line 609 and 620), add a helper to convert each item:
```go
// Add this function somewhere in media.go
func resolveMediaItemCoverAndFile(item database.ListMediaItemsRow) database.ListMediaItemsRow {
// This is a placeholder - in practice you'd need to add libraryService to MediaHandler
// For now, return as-is. Full implementation requires adding libraryService dependency.
return item
}
```
**Note**: The `ListMediaItems` and `GetMediaItem` functions currently return raw database rows. To properly resolve URLs, you would need to either:
1. **Add libraryService to MediaHandler** and call the resolution helpers, OR
2. **Create a separate response struct** that converts pgtype.Text to resolved URLs
For this implementation, the recommended approach is:
**Modify GetMediaItem** (line 639):
**Current code**:
```go
return c.JSON(http.StatusOK, item)
```
**New code**:
```go
return c.JSON(http.StatusOK, map[string]interface{}{
"id": uuid.UUID(item.ID.Bytes).String(),
"library_id": uuid.UUID(item.LibraryID.Bytes).String(),
"title": item.Title,
"author": textToString(item.Author),
"cover_image_path": mh.ResolveCoverURL(item.LibraryID, item.CoverImagePath),
"file_path": mh.ResolveFileURL(item.LibraryID, item.FilePath),
// ... add other fields as needed
})
```
Similarly for `ListMediaItems`, wrap the results in a map with resolved URLs.
---
### Step 7: Fix Frontend /covers/ Prefix
**File**: `web/src/bookshelf.ts`
**Current code** (line 49-50):
```typescript
${book.cover_image_path ?
`<img src="/covers/${book.cover_image_path}" alt="${book.title}" class="w-full h-48 object-cover rounded mb-2">` :
```
**New code**:
```typescript
${book.cover_image_path ?
`<img src="${book.cover_image_path}" alt="${book.title}" class="w-full h-48 object-cover rounded mb-2">` :
```
The backend now returns full URLs like `/uploads/library-{id}/path/to/cover.jpg`, so no prefix is needed.
---
### Summary of Changes for Phase 7
| File | Changes |
|------|---------|
| `internal/handlers/media.go` | Add `ResolveCoverURL()`, `ResolveFileURL()`, `resolveMediaURL()` helpers |
| `internal/handlers/collections.go` | Add `resolveCoverURL()`, `resolveFileURL()` to CollectionHandler; update lines ~199, ~626, ~935 |
| `internal/handlers/progress.go` | Add `resolveCoverURL()` to ProgressHandler; update lines ~288, ~359 |
| `internal/handlers/media.go` | Update `GetMediaItem` to return resolved URLs in response map |
| `web/src/bookshelf.ts` | Remove `/covers/` prefix from cover image URL |
---
@@ -417,7 +780,7 @@ func (mh *MediaHandler) getFullFilePath(ctx context.Context, libraryID pgtype.UU
---
## Phase 8: Tests
## Phase 9: Tests
### Unit Tests
@@ -659,7 +1022,6 @@ curl -H "Authorization: Bearer YOUR_TOKEN" \
- Supports backward compatibility with existing absolute paths
- Images are cached for 24 hours by clients
- All endpoints require authentication (JWT)
```
### File: `docs/developer/api/media-items/download_book.md`
@@ -681,7 +1043,10 @@ Update existing documentation to note:
| 5 | `internal/handlers/media.go` | Add `ServeFile()` handler for authenticated static-style routes |
| 5 | `internal/router/media.go` | Add route `GET /uploads/library-:id/*` (register LAST) |
| 6 | `internal/handlers/opds.go` | Add `libraryService` to struct; update `GetCoverImage` to use service |
| 7 | Frontend files | No changes needed (backend resolves URLs) |
| 7 | `internal/handlers/collections.go` | Resolve cover paths to URLs in API responses |
| 7 | `internal/handlers/progress.go` | Resolve cover paths to URLs in API responses |
| 7 | `internal/handlers/media.go` | Resolve file paths to URLs in API responses |
| 7 | `web/src/bookshelf.ts` | Remove `/covers/` prefix (use resolved URL directly) |
| 8 | Runtime resolution | Handles both absolute (old) and relative (new) paths |
| 9 | `internal/handlers/media_test.go` | Add unit tests for path resolution |
| 9 | `internal/services/media_scanner_test.go` | Add unit tests for `getRelativePath()` |
-417
View File
@@ -1,417 +0,0 @@
# Implementation Plan: Force Rescan Feature
## Overview
Add a `force` parameter to the library scan endpoint that allows re-processing existing media items. Currently, the scanner skips files that already exist in the database (based on file path). The force flag will bypass this check and re-process all files.
## Current Behavior
When scanning a library:
1. `ScanLibrary` handler receives scan request
2. Worker enqueues a `JobTypeScan` job
3. `processScanJob` creates a `MediaScanner` and calls `ScanFolders()`
4. For each file, `processMediaFile()` checks if file exists in DB
5. If exists with same size → **skip** (return `false, nil`)
6. If exists with different size → **update**
7. If doesn't exist → **create new**
## Proposed Changes
### 1. Backend: Add `force` parameter support
#### File: `internal/handlers/scanner.go`
**Change 1.1** - Add `Force` field to `ScanLibraryRequest` struct (line ~89-92):
```go
type ScanLibraryRequest struct {
FolderPaths []string `json:"folder_paths,omitempty"`
LibraryID string `json:"library_id,omitempty"`
Force bool `json:"force,omitempty"` // NEW: Force rescan of existing files
}
```
**Change 1.2** - Pass `force` to job params in `ScanLibrary` function (line ~153):
```go
job := &services.Job{
ID: jobID,
Type: services.JobTypeScan,
Params: map[string]interface{}{
"library_id": req.LibraryID,
"folders": folderPaths,
"admin_id": userUUID.String(),
"db": h.db,
"force": req.Force, // NEW
},
// ... rest unchanged
}
```
#### File: `internal/services/worker.go`
**Change 2.1** - Extract `force` param in `processScanJob` function (after line ~195):
```go
// Existing code:
db, ok := job.Params["db"].(*database.Queries)
if !ok {
return nil, fmt.Errorf("database queries required")
}
// NEW: Extract force parameter
force := false
if forceVal, ok := job.Params["force"].(bool); ok {
force = forceVal
}
```
**Change 2.2** - Pass force to MediaScanner (after line ~220):
```go
scanner.SetAdminID(adminUUID)
// NEW: Set force flag
scanner.SetForce(force) // NEW
```
#### File: `internal/services/media_scanner.go`
**Change 3.1** - Add `forceRescan` field to MediaScanner struct (find struct definition):
```go
type MediaScanner struct {
db *database.Queries
folders []string
adminID pgtype.UUID
job *Job
watcher *fsnotify.Watcher
totalFiles int
newItems int
errors int
forceRescan bool // NEW: Force re-scan of existing files
}
```
**Change 3.2** - Add `SetForce` method (anywhere in file, after existing setters):
```go
func (s *MediaScanner) SetForce(force bool) {
s.forceRescan = force
}
```
**Change 3.3** - Modify `processMediaFile` to respect force flag (line ~356-366):
Current code:
```go
// Check if media item already exists in database
existingItem, err := s.getMediaItemByFilePath(ctx, path)
if err == nil {
fmt.Printf("Media item already exists in database: %s (size: %d vs %d)\n", path, existingItem.FileSize.Int64, info.Size())
// Media item exists, check if file has changed (by size)
if existingItem.FileSize.Int64 != info.Size() {
fmt.Printf("File size changed, updating media item: %s\n", path)
_ = s.updateMediaItem(ctx, existingItem.ID, path, info)
return false, nil
}
fmt.Printf("Media item already exists with same size, skipping: %s\n", path)
return false, nil // <-- THIS IS WHERE WE SKIP
}
```
New code:
```go
// Check if media item already exists in database
existingItem, err := s.getMediaItemByFilePath(ctx, path)
if err == nil {
fmt.Printf("Media item already exists in database: %s (size: %d vs %d)\n", path, existingItem.FileSize.Int64, info.Size())
// If force rescan is enabled, always re-process
if s.forceRescan {
fmt.Printf("Force rescan enabled, re-processing existing media item: %s\n", path)
// Force update: delete existing and re-create
if err := s.db.DeleteMediaItem(ctx, existingItem.ID); err != nil {
fmt.Printf("Warning: failed to delete existing media item: %v\n", err)
}
// Continue to create new entry below
} else {
// Normal behavior: check if file has changed (by size)
if existingItem.FileSize.Int64 != info.Size() {
fmt.Printf("File size changed, updating media item: %s\n", path)
_ = s.updateMediaItem(ctx, existingItem.ID, path, info)
return false, nil
}
fmt.Printf("Media item already exists with same size, skipping: %s\n", path)
return false, nil
}
}
```
### 2. Frontend: Update button and API call
#### File: `web/src/admin.ts`
**Change 4.1** - Update `scanAllLibraries` function to send `force: true` (line ~129):
Current code:
```typescript
const scanResp = await fetch(`/api/libraries/${lib.id}/scan`, {
method: 'POST',
headers: { 'Authorization': `Bearer ${token}` }
});
```
New code:
```typescript
const scanResp = await fetch(`/api/libraries/${lib.id}/scan`, {
method: 'POST',
headers: {
'Authorization': `Bearer ${token}`,
'Content-Type': 'application/json'
},
body: JSON.stringify({ force: true })
});
```
#### File: `templates/admin.templ`
**Change 5.1** - Update button text and description (line ~55-58):
Current:
```html
<button onclick="scanAllLibraries()" class="btn-primary p-4 rounded-lg text-left">
<div class="font-medium">Scan Library</div>
<div style="color: var(--text-secondary)" class="text-sm">Find new ebooks in your folders</div>
</button>
```
New:
```html
<button onclick="scanAllLibraries()" class="btn-primary p-4 rounded-lg text-left">
<div class="font-medium">Rescan Library</div>
<div style="color: var(--text-secondary)" class="text-sm">Re-scan existing files and fix metadata</div>
</button>
```
### 3. API Documentation
#### File: `docs/developer/api/scanner/scan_library.md`
**Change 6.1** - Update documentation to reflect force parameter (line ~15):
Current:
```markdown
| force | boolean | No | Force rescan of existing files (default: false) |
```
This is already documented. Ensure the description is accurate:
```markdown
| force | boolean | No | Force rescan of existing files. When true, re-processes all files in library regardless of whether they already exist in database (default: false) |
```
### 4. Tests
#### Unit Tests: `internal/services/worker_test.go`
**Change 7.1** - Add test case for force parameter in existing scan job tests:
```go
func TestWorker_ProcessJob_ScanJob_ForceRescan(t *testing.T) {
// Setup test with existing media item in database
// Create job with force: true
// Verify media item is re-processed
}
```
#### Integration Tests: `cmd/server/tests/scanner_integration_test.go`
**Change 7.2** - Add integration tests covering three contexts (per guidelines line 140):
Follow existing pattern from `scanner_integration_test.go`:
```go
func TestScanLibrary_ForceFlag(t *testing.T) {
s := setupTestServer(t)
defer s.TearDown()
// Test 1: No user context (unauthenticated) - expect 401
// Test 2: Regular user context - expect 403 (admin only)
// Test 3: Admin context with force=true - expect 200, verify re-scan
// Test 4: Admin context with force=false - expect 200, verify skip
}
```
#### Bruno OpenCollection YAML Tests
**Change 7.3** - Add force parameter test case to existing Bruno test:
File: `bruno/scanner/Scan Media Items.yml`
Add a new test request or modify existing to include:
```yaml
body: {
"force": true
}
```
### 5. Frontend: Add Watch Status Display
Replace the "Settings" card on /admin page with a Watch Status display.
#### File: `templates/admin.templ`
**Change 8.1** - Replace Settings card with Watch Status (lines 38-47):
Current:
```html
<div class="card p-6 rounded-lg border" style="background-color: var(--bg-secondary); border-color: var(--border)">
<div class="flex items-center space-x-3">
<div class="text-3xl">⚙️</div>
<div>
<h3 class="font-semibold" style="color: var(--text-primary)">Settings</h3>
<p style="color: var(--text-secondary)" class="text-sm">Configure your preferences</p>
</div>
</div>
<a href="/profile" class="mt-4 inline-block text-sm btn-secondary px-3 py-1 rounded">Manage Settings</a>
</div>
```
New:
```html
<div class="card p-6 rounded-lg border" style="background-color: var(--bg-secondary); border-color: var(--border)">
<div class="flex items-center space-x-3">
<div class="text-3xl">👁️</div>
<div>
<h3 class="font-semibold" style="color: var(--text-primary)">Scan Watch Status</h3>
<p style="color: var(--text-secondary)" class="text-sm">Auto-detecting new files</p>
</div>
</div>
<div id="watch-status" class="mt-4 text-sm" style="color: var(--text-secondary)">
<span class="inline-block w-2 h-2 rounded-full bg-green-500 mr-2"></span>
Watching <span id="watch-count">0</span> libraries
</div>
</div>
```
#### File: `web/src/admin.ts`
**Change 8.2** - Add function to fetch and display watch status:
```typescript
async function loadWatchStatus() {
const token = localStorage.getItem('token');
if (!token) return;
try {
const response = await fetch('/api/scanner/watch/status', {
headers: { 'Authorization': `Bearer ${token}` }
});
if (response.ok) {
const data = await response.json();
const countEl = document.getElementById('watch-count');
if (countEl) {
countEl.textContent = data.total_watching?.toString() || '0';
}
}
} catch (error) {
console.error('Failed to load watch status:', error);
}
}
function logout(): void {
localStorage.removeItem('token');
localStorage.removeItem('user');
window.location.href = '/';
}
// Initialize on page load
document.addEventListener('DOMContentLoaded', function() {
loadWatchStatus();
});
```
**Change 8.3** - Move inline script from admin.templ to admin.ts:
Current admin.templ has inline script (lines 121-131):
```html
<script>
function logout() {
localStorage.removeItem('token');
localStorage.removeItem('user');
window.location.href = '/';
}
document.addEventListener('DOMContentLoaded', function() {
loadTheme();
});
</script>
```
Remove the entire `<script>` block from `admin.templ`. The logout function and DOMContentLoaded are now in admin.ts.
**Change 8.4** - Export functions to window in admin.ts:
Add at the end of admin.ts (with other window exports):
```typescript
(window as any).loadWatchStatus = loadWatchStatus;
(window as any).logout = logout;
```
#### Generated File: `templates/admin_templ.go`
After editing `admin.templ`, rebuild the generated file:
```bash
templ generate templates
```
## Backward Compatibility
- **Default behavior unchanged**: `force: false` maintains current skip-if-exists behavior
- **Mobile apps**: Existing API consumers won't break (they just won't send `force` param)
- **Breaking change**: None
## Verification Steps
After implementation:
1. **Build verification**:
```bash
go build ./...
```
2. **Run tests**:
```bash
go test ./... -v
```
3. **Manual verification**:
- Create library with existing books
- Click "Rescan Library" button
- Verify metadata is re-extracted (check file hash, cover image, etc.)
## Git Commit Structure
1. **Backend: Add force parameter to scanner handler**
- `internal/handlers/scanner.go` - Add Force field to request struct and job params
2. **Backend: Add force parameter to worker and media scanner**
- `internal/services/worker.go` - Extract force param
- `internal/services/media_scanner.go` - Add forceRescan field and SetForce method
3. **Frontend: Update scan button to use force rescan**
- `web/src/admin.ts` - Send force: true in request body
- `templates/admin.templ` - Update button text to "Rescan Library"
4. **Frontend: Add Watch Status display on admin page**
- `templates/admin.templ` - Replace Settings card with Watch Status
- `web/src/admin.ts` - Add loadWatchStatus function
5. **Tests: Add unit and integration tests for force rescan**
- Add test cases to `internal/services/worker_test.go`
- Add integration tests to `cmd/server/tests/scanner_integration_test.go`
- Update `bruno/scanner/Scan Media Items.yml` with force parameter test
6. **Docs: Update API documentation**
- Update `docs/developer/api/scanner/scan_library.md`
- Rebuild generated templates: `templ generate templates`