When an admin was deleted, the ON DELETE SET NULL foreign key would set
created_by_admin_id to NULL on all their libraries. This caused the scanner
to fail to find an admin ID for broadcasting scan-complete WebSocket messages.
- On admin deletion, reassign all libraries and media items to the next admin
- Prevents created_by_admin_id from ever being NULL on active libraries
- Uses new ReassignLibraries and ReassignMediaItems DB queries
AllowedExtensions in Go was the intended single source of truth for library
type file extensions, but it was never synced to the database. This caused
missing extensions like .pdf for manga to be absent from library_types.
- Add SyncAllowedExtensions() to sync Go AllowedExtensions map to DB
- Call SyncAllowedExtensions() from cmd/server/main.go on startup
- Ensure .pdf is included in manga extensions
The root cause of scanner failures in Podman containers was NOT that
inotify doesn't work through bind mounts (it does — same kernel, same
inodes). The real bug was SetFolders() only watching root directories.
Linux has no recursive inotify — every subdirectory must be added
individually to the watcher.
Changes:
- SetFolders() now walks all subdirectories and adds each to the watcher
(same approach as Audiobookshelf/Kavita)
- Remove broken mtime-based detection: seedDirectoryMtimes,
pollDirectoryChanges, detectChangedRoots, checkDirectoryMtimes,
SyncFilesystemWithDatabase — all unreliable in container overlay mounts
- Replace StartPolling with startBackupScan: enqueues full JobTypeScan
every 5 minutes (down from 30) as a safety-net fallback
- enqueueLibraryScan() sets job.UserID from admin ID so the worker can
broadcast WebSocket messages
- performInitialScan() sets job.UserID for the same reason
- Add [WATCHER] prefix logging to all fsnotify event loop messages
- Add defense-in-depth: fallback to GetFirstAdmin() when library has
no created_by_admin_id (NULL from test cleanup)
- Fix processDirectoryScanJob to use prefix-match (GetLibraryByFolderPathPrefix)
- Fix nil context panic: all jobs now set Context: context.Background()
- Remove mtime-related tests; update default interval test from 30m to 5m
The created_at column stores file modification time (intentional for preserving
original metadata), but this makes 'Recently Added' sorting unreliable for
imported files. Add imported_at column that records the actual database insert
timestamp.
Changes:
- Add imported_at TIMESTAMPTZ column to media_items (nullable)
- Update GetRecentlyAddedItems to sort by imported_at DESC NULLS LAST first
- Add ReassignLibraries and ReassignMediaItems queries for admin deletion handover
- Add SyncLibraryTypeExtensions query for startup extension sync
- Update all media_items SELECT queries to include imported_at column
Podman rootless containers with overlay storage do not propagate inotify
events through bind mounts, making the fsnotify file watcher ineffective.
This caused new files added on the host to go undetected until the
5-minute full-filesystem-walk polling fallback caught them.
Add a lightweight directory mtime polling mechanism that runs every 10
seconds, checking stat() on all subdirectories under watched library
folders against a cached mtime value. When a directory's mtime changes
(indicating files were added/removed/renamed), it feeds into the existing
markDirectoryDirty() → processDirtyDirectories() → job queue pipeline.
Changes:
- Add dirMtimes cache + mutex to MediaScanner struct
- Add seedDirectoryMtimes() to populate cache on startup (prevents
false-positive flood on first poll)
- Add pollDirectoryChanges() goroutine (10s ticker) and
checkDirectoryMtimes() (walks directories, compares mtimes)
- Launch mtime poller from WatchChanges() alongside existing goroutines
- Rename StartPolling logs to [ORPHAN-CLEANUP] to clarify its role
- Change default poll interval from 60s → 30m (new file detection now
handled by the fast mtime poll; full sync focuses on orphan cleanup)
- Update GetScanSettings default from 60 → 1800 seconds
- Add 5 tests: seed cache, skip nonexistent, detect new dir, skip
unchanged, detect modified dir
Expected result: new files detected in ~20 seconds (10s poll + 10s
debounce) regardless of inotify/container support.
FieldValue struct had no json tags, so Go marshaled fields as uppercase
(Value, Count, Score) but frontend expected lowercase (value, count).
This caused all autocomplete dropdowns (tags, author, series, language)
to silently fail — tagSuggestions[].value was undefined, crashing
toLowerCase() calls and producing empty dropdowns.
Replace the single-purpose SeriesDetail template with a parameterized
BrowseDetail component that accepts badge icon/label, title, page title,
back URL/label, empty state icon/message, and book list. Both series
detail and new tag detail pages use the same template with different
params, eliminating duplication.
Series detail: 📚 Series, back to /series, "All Series"
Tag detail: 🏷️ Tag, back to /bookshelf, "Bookshelf"
Deleted series_detail.templ and series_detail_templ.go.
Updated frontend.go series route to call BrowseDetail with series params.
Added /tags/detail route calling BrowseDetail with tag params.
updateMediaItem (used by force rescan) was missing 22 fields including
Language, Genre, PageCount, CopyrightYear, GoodreadsID, and all 14 new
columns from the SQL query fix. Now wires all 37 UpdateMediaItemParams.
Also adds hasSiblingBookFile() early exit in processMediaFile: if a file
is an image (jpg/png/webp/etc) and its directory contains an actual book
file (epub/pdf/cbz/etc), skip importing the image as a standalone media
item. This prevents cover images and interior art from appearing as
duplicate library entries.
The UpdateMediaItem SQL query only SET 23 of 37 media_items columns,
causing all 3 call sites (admin PUT, bulk update, force rescan) to
silently NULL out the 14 unwired fields on every update.
Added: manga_type, reading_direction, series_count, volume, imprint,
age_rating, web_url, metadata_notes, community_rating, story_arc,
is_black_and_white, alternate_info, scan_information, summary.
Regenerated sqlc Go code (queries.sql.go) with 37-param
UpdateMediaItemParams struct.
Remove the library selector dropdown from the series detail page
since the page is scoped to the library from the browse page.
Replace it with a simple '← All Series' back link in the sticky bar.
Add title attributes to the shared BookCard template so the full
book title and author are visible on hover (useful for truncated
text with line-clamp).
Create a new /series/detail?name=X&library_id=Y SSR page that shows
all books in a specific series, replacing the broken approach of
linking to /bookshelf?series_filter=X (the bookshelf SSR handler
ignores all filter query params).
The series detail page features:
- Back link to /series browse page
- Library selector dropdown (full page navigation on change)
- Series name header with book count badge
- Book grid using the shared BookCard template
- Empty state for series with no books
Update all links to point to the new page:
- Series cards on /series browse page
- Series badge on book detail page
- JS-rendered cards in series.ts switchLibrary
Add seriesDetailPage Alpine component for the detail page's
library switcher (simple navigation, no AJAX needed).
Unit tests:
- series_service_test.go: test continueSeriesRowToMediaItems conversion
with valid fields, null fields, and comprehensive field mapping
- series_test.go: test handler initialization and textToString helper
Integration tests (series_integration_test.go):
- GET /api/series: requires library_id, rejects invalid UUID, returns
empty array for empty library, pagination params, limit clamped to
100, response structure validation, special characters in names
- GET /api/series/books: requires library_id and name, handles
nonexistent series, unauthorized access
- Restore Continue Series system collection
- Dashboard sections include all 5 collections (including continue-series)
Update test helpers:
- Add SeriesHandler to setupTestServer router config
- Add 5th Continue Series collection to createDefaultCollectionsForUser
- Update dashboard integration test for 5 collections
Create SeriesHandler with two API endpoints:
- GET /api/series (paginated series list with covers)
- GET /api/series/books (books in a specific series)
Uses query param ?name=X instead of path param to avoid URL encoding
issues with special characters in series names.
Add GetSeriesCardsData helper returning services.SeriesInfo for use
by the SSR route (avoids handlers→templates import cycle).
Register /api/series routes via registerSeriesRoutes in router.
Add /series SSR route in frontend.go with library-scoped pagination
and error handling, matching the dashboard/bookshelf patterns.
Add SeriesHandler to router Config and instantiate in main.go.
Add SeriesCardData type to templates/types.go.
Add Continue Series as the 5th valid system collection in
dashboard handler and auth handler's CreateDefaultCollectionsForUser.
Create SeriesService with methods for paginated series listing, cover
path resolution, series book listing, and a conversion helper for
GetContinueSeriesItemsRow to MediaItems.
Wire the continue-series query type into DashboardService's
getCollectionItemsByQueryType switch and add its metadata to the
RestoreSystemCollection default collection map.
Add five new sqlc queries to support the series browse page and
continue-series dashboard collection:
- GetDistinctSeries: list unique series with book counts, sorted by
most recent entry, with pagination
- GetDistinctSeriesCount: total distinct series count for pagination
- GetSeriesCovers: fetch up to N cover image paths for a series,
ordered by series_number
- GetSeriesBooks: fetch all books in a series ordered by series_number
- GetContinueSeriesItems: CTE-based query using DISTINCT ON to find
the next unread book per series for a given user/library, sorted
by most recent last_read_at
Add .epub and .pdf to comics type, add .pdf to manga type, and ensure
avif/tiff/tif extensions are consistently included in manga across all
layers. Update test fixtures to match the canonical extension lists.
Replaced the 8 US-centric timezone options with 24 entries covering
every populated UTC offset worldwide (UTC-10 through UTC+12). Each
option is labeled by regional name with UTC offset in parentheses,
e.g. 'Central European (UTC+1/+2)'. DST-shifting zones show both
standard and daylight offsets.
Covers: Hawaii, Alaska, Pacific, Mountain, Mountain-no DST, Central,
Eastern, Brasilia, British, Central European, Eastern European,
Moscow, Iran, Gulf, Pakistan, India, Bangladesh, Indochina, China,
Japan/Korea, Australian Central, Australian Eastern, New Zealand.
Backend already validates all IANA zones via time.LoadLocation(), so
users with uncommon zones can still set them via the API.
Updated in three locations:
- templates/profile_form.templ (user profile dropdown)
- templates/admin_settings.templ (admin settings dropdown)
- internal/handlers/sidecar.go (HTMX save response HTML)
The admin settings timezone dropdown was incomplete: it had no
pre-selection of the current value, was missing consistent styling,
and the form submission did not persist timezone changes.
Changes:
- frontend.go: load default_timezone from system_settings into the
systemConfig map passed to the template
- admin_settings.templ: match card styling used by the Base URL
section; pre-select current timezone with selected?= attribute
- sidecar.go: handle default_timezone in UpdateSystemConfiguration
by writing to system_settings table instead of system_config;
update HTMX response to include timezone section with current value
- Add selectedAttr() helper for HTMX HTML string response
The GetUser query did not select the timezone column, so the router
helper could not access userDB.Timezone. Added u.timezone to the
SELECT list so the per-user timezone is available in the template
user context.
The timezone update block in UpdateProfile() referenced undefined
variables ctx and userUUID, causing a compile error. Fixed to use
c.Request().Context() and targetUserUUID which are the correct
variables in that handler scope.
Also added Timezone field to AdminUpdateUserRequest struct so the
timezone value is properly bound from JSON requests, since
UpdateProfile() binds to AdminUpdateUserRequest rather than
UpdateProfileRequest.
Consistently format dates and times across all templates and API
handlers using MM-DD-YYYY with 12-hour clock (03:04 PM):
- analytics.go: date keys, lastSync, lastRead timestamps
- progress.go: lastUpdated timestamp in GetAllProgress
- book_detail.templ: LastReadAt, DatePublished
- book_detail_modals.templ: progress sync timestamps, LastReadAt
- devices.templ: LastSync, LastSeen
- conflicts.templ: CreatedAt
- admin_users.templ: user CreatedAt date
- Add FormatInTimezone and FormatTimestamptzInTimezone helpers
in templates/utils.go for timezone-aware time display
- Add Timezone field to templates.User struct
- Pass user timezone from DB to template context in helpers.go
- Add timezone update handling in auth.go UpdateProfile with
validation via time.LoadLocation
- Add UpdateTimezoneSettings handler in system_settings.go for
admin system-wide default timezone using UpdateSystemSetting
- Add timezone column (VARCHAR(50) DEFAULT 'UTC') to users table
- Add default_timezone row to system_settings seed data
- Add idx_users_timezone index for user timezone lookups
- Add UpdateUserTimezone and GetSystemTimezone queries
- Regenerate sqlc code (models, querier, queries.sql.go)
- Reuse existing UpdateSystemSetting for system timezone updates
instead of creating a redundant UpdateSystemTimezone query
- Remove GET /progress/:id and POST /progress/:id from progress routes.
These were superseded by the media-item progress routes. Only
GET /progress/:id/history remains.
- Add ProgressService to router.Config so sync.go can inject it into
KoboHandler via SetProgressService().
- Inject ProgressService into KoboHandler at route registration time
rather than requiring a separate setup step.
- Update comment from 'Legacy progress routes' to 'Progress routes'.
All four progress write paths now delegate to ProgressService.SaveProgress:
- MediaHandler: UpdateMediaReadingProgress uses ProgressService for web
saves with richer request body (reading_mode, zoom_level, scroll). GET
now uses GetUniversalProgress query that JOINs media_items for
format_group, total_characters, chapter_count.
- KOReaderHandler: updateProgressForBook delegates to ProgressService.
Fixed device ID bug (was using userID, now uses deviceID). Removed
duplicate UpdateDeviceLastSync with zero UUID. Added pgtype helper
functions (textPtrToPgText, intPtrToPgInt4, int64PtrToPgInt8).
- KoboHandler: all four progress write points (Markup ReadingSync, Markup
last-read-place, AnalyticsGettests, SyncFromServer) delegate to
ProgressService. Fixed empty epubcfi string now correctly set to
Valid: false. SyncFromServer preserves last_sync_source=bookhoard
and Broadcast: false.
- QueueProcessor: syncProgress delegates to ProgressService.
- main.go: creates ProgressService after ConnectionManager, injects via
SetProgressService() on all handlers and queue processor.
Handler tests cover pgtype conversion helpers (textPtrToPgText, etc.)
and device icon mapping.
Introduces a centralized ProgressService that handles all reading progress
writes across web, KOReader, and Kobo clients. The service implements:
- Merge strategy: reads existing progress first, then only overwrites
non-nil fields from the incoming request. This fixes the data loss bug
where partial updates (e.g., Kobo last-read-place sending only epubcfi
and chapter) would NULL out percentage, character_offset, etc.
- Enrichment: computes missing fields from available data:
- character_offset from percentage + total_characters
- current_page from percentage + total_pages
- percentage from current_page + total_pages (reverse)
- percentage from character_offset + total_characters (reverse)
- Conflict detection: when a different source writes progress within 5
minutes with >1% difference, records a sync_conflicts row and broadcasts
a WebSocket notification for real-time UI alerts.
- Broadcast control: SaveProgressRequest.Broadcast flag lets Kobo
last-read-place and SyncFromServer skip WebSocket broadcasts.
- Pointer fields on SaveProgressRequest: nil means preserve existing,
non-nil means overwrite. Eliminates ambiguity between zero values
and not-provided fields.
Also adds unit tests for buildProgressSnapshot helper function.
Fix two bugs in progress display across book detail, progress page, reader,
and sync modal templates:
1. Percentage was stored as 0.0-1.0 fraction but displayed as-if 0-100
(showing 0.5% instead of 50%). Multiply by 100 at the data source in
both GetAllProgress and GetAllProgressData handlers, and in the reader
route's ReadingProgress construction.
2. Progress bar width was never evaluated — { expr } inside style=".."
was rendered as literal text by templ, resulting in 0% width bars for
all items. Fixed by using templ's style={ expr } attribute syntax
which evaluates the Go expression (uses SanitizeStyleAttributeValues).
Also add format-aware progress display:
- Reader template: shows "45% · Page 89/196" for reflowable (estimated
pages), "127/342" for comics/PDFs (actual pages)
- Progress page: shows "Page X of Y (est.)" for reflowable, "X / Y"
for fixed layout
- Add FormatGroup and EstimatedPages to ProgressWithMedia struct
- Remove hardcoded totalPages=200 fallback in progress handler (now 0)
- Add fmt import to progress.templ for string formatting
Reflowable ebooks (EPUBs) don't have inherent page numbers since layout
depends on device settings. Add an EstimatedPages() function that converts
total character count to an estimated print page count using the industry
standard of 1800 characters per page.
This provides a consistent, device-independent page count for progress
display (e.g., "Page 89 of 196" for a reflowable EPUB), matching how
KOReader and similar readers handle the same problem.
The DetectChapters function in reader.go was serializing chapter detection
results to JSON but then discarding the bytes with `_ = metadataBytes`
instead of writing them to the database. This meant chapter_metadata in
media_items was never populated, forcing re-detection on every request.
Replace the no-op discard with an actual UpdateMediaItemChapterMetadata()
call using the existing sqlc-generated query.
The media scanner never populated page_count or total_characters in
media_items, leaving progress display and reading position calculations
with no reliable data. This commit fixes data population for all formats:
Comics (CBZ/CBR/CB7/CBT):
- Add countArchiveImages() helper that walks archive entries and counts
image files (.jpg, .jpeg, .png, .gif, .webp)
- Call it during comic metadata merge to set metadata.PageCount
PDFs:
- Extract pdfInfo.PageCount from the pdfcpu library (already available
from PDFInfo call, just never used) and set metadata.PageCount
Reflowable EPUBs:
- Use book.AllChaptersText() to compute metadata.TotalCharacters
- Use book.ChapterCount() to set metadata.ChapterCount
Fixed-layout EPUBs (manga/comics in EPUB format):
- Merge .epub into the .cbz case in countArchiveImages since both are
ZIP archives with images
- Detect fixed-layout EPUBs via DetectFixedLayoutEPUB() in both the
Calibre sidecar path (mergeMetadata) and the no-sidecar path
(extractMetadata), counting images when fixed-layout is detected
Format group on creation:
- Remove the guard condition on UpdateMediaItemFormatGroup so that
format_group, is_reflowable, and has_fixed_layout are set immediately
for every new item (not just items with text data)
- Use DetectFixedLayoutEPUB() instead of hardcoding all .epub as
reflowable, correctly classifying fixed-layout EPUBs
Also pass PageCount to CreateMediaItem and add PageCount,
TotalCharacters, and ChapterCount fields to the MediaMetadata struct.
Go's new() builtin takes a type and allocates a zero value — it cannot
wrap an expression. All instances of new(someExpression) were compile
errors. Replace each with a local variable assignment and address-of
operator.
Affected files:
- handlers/koreader.go: progress field pointers (Chapter, Page, etc.)
- handlers/kobo.go: pagesRemaining pointer
- handlers/queue.go: uuidPtrToString and timestamptzPtrToString helpers
- router/reader.go: bookmark pageNumber and chapterNumber pointers
- services/media_scanner.go: validation error message pointers
- services/worker.go: StartedAt and CompletedAt timestamps
- sync/offline.go: GetDeviceStatus return pointer
- tests/device_test.go: SyncEnabled and SyncFrequencyMinutes pointers
The reader failed to load comics and manga (and any file with special
characters in its path) for two reasons:
1. FileURL was built with raw fmt.Sprintf instead of ResolveMediaURL,
so characters like '#' in paths (e.g. 'Annual #2') were interpreted
as URL fragments, truncating the path and causing 404s.
2. The Alpine x-init expression used raw string interpolation for config
values, so apostrophes in paths (e.g. "I'll Use My Appraisal Skill")
broke JavaScript parsing with 'Unexpected identifier'.
Fix by using utils.ResolveMediaURL for proper URL path encoding and
json.Marshal for the initReader config to safely escape all special
characters.
Cover image URLs with special characters like parentheses, #, ?, or
spaces would break because browsers interpret them as URL delimiters.
Apply url.PathEscape() per path segment in ResolveMediaURL so the
server can correctly resolve files like "Wonder Woman (2016) #001.cbz.cover.jpg".
Also adds a package doc comment and fixes the exported function comment.
Comic archive formats (.cbz, .cbr, .cb7, .cbt) and .kepub files were
falling through to the default case in extractMetadata(), which only
set the title from the filename. This meant ComicInfo.xml was never
parsed and no cover images were extracted for comics without a Calibre
metadata.opf sidecar file.
The fix adds dedicated switch cases:
- .cbz/.cbr/.cb7/.cbt: calls mergeMetadata() with nil, which triggers
existing ComicInfo.xml parsing (title, series, issue number, writer,
publisher, genre, reading direction, etc.) and cover image extraction
from the archive. Falls back to sidecar cover if no image is found.
- .kepub: treated the same as .epub since KEPUB is an EPUB variant,
enabling full metadata and cover extraction.
Both ListProcessingIssues and GetProcessingIssueStats were reading the
URL parameter 'libraryId', but the routes in internal/router/library.go
define the param as ':id'. This caused both endpoints to always fail with
an invalid library ID error since c.Param('libraryId') returns an empty
string that can't be parsed as a UUID.
Remove redundant type conversions that Go 1.26 makes unnecessary or that
were already no-ops:
- uuid.UUID(x.Bytes) → x.Bytes (uuid.UUID is [16]byte, same as pgtype UUID Bytes)
- pgtype.UUID{Bytes: [16]byte(u), Valid: true} → pgtype.UUID{Bytes: u, Valid: true}
- (*time.Time)(&x.Time) → &x.Time
- json.RawMessage(x) → x where x is already []byte
- []byte(stringVal) → stringVal where []byte is expected
- int()/int64()/byte() casts on values already of the target type
- Decompressor(fn) → fn (type is identical)
Handle previously ignored error returns:
- collections.go: check json.Unmarshal error in GetCollection
- conversion_service.go: check fileSize.Scan() error
- app_test.go: check app.Shutdown() error in benchmark
DismissAllResolved was calling ListSyncConflictsByUser which filters to
'unresolved' conflicts only, so it could never find the user_resolved or
bulk_resolved conflicts it was trying to delete. The query always returned
an empty set, making dismiss-all a no-op.
Fix the leading space in three SQL query name annotations (ListConflictsByUser,
ListAllConflictsByUserAndStatus, CheckForProgressConflicts) that prevented
sqlc from generating their Go functions. Regenerate the query code and swap
DismissAllResolved to use ListConflictsByUser (no status filter) — the
existing Go loop already filters by resolution_status.
Replace direct error equality check with errors.Is() in media_scanner_hash_test.
In analytics_test.go, improve defer patterns by capturing resp.Body as a named parameter
to avoid stale references, and add require.NoError() checks on all json.NewDecoder().Decode()
calls that were previously silently ignoring decode errors.
Replace direct error equality checks (err == pgx.ErrNoRows, err != http.ErrServerClosed)
with the idiomatic errors.Is() function throughout handlers, services, middleware, and app
startup. This correctly handles wrapped error chains.
Also replace a raw type assertion (*HTTPError) with errors.AsType[*HTTPError]() in the
error handler middleware for consistency.
Additionally, rename shadowed variables for clarity:
- sidecar.go: config -> sidecarConfig, systemConfig (shadowed package-level vars)
- media_scanner.go: uuid -> uuidString (shadowed the uuid package import)
Two changes to EPUB metadata extraction:
1. Restructure extractMetadata so that fixed-layout detection and cover
extraction always run for EPUBs, even when extractEPUBMetadata returns
an error. Previously, a partial failure from the EPUB parser would skip
cover and format detection entirely, leaving books without covers.
2. Remove the language restriction (ja/jpn) from manga reading direction
detection. Manga tagged with 'manga' should default to RTL regardless
of the language metadata, since the tag is an explicit signal from the
user or metadata source.
In applyProgressResolution and applyResolution, currentPage and totalPages
were unconditionally read from existingProgress even when the preceding
query returned err (no rows). This caused a nil pointer dereference when
no existing reading progress existed for a media item. Now declare the
variables as zero-value pgtype.Int4 and only populate them from
existingProgress when err is nil.
Replace direct equality checks (err != pgx.ErrNoRows) with the idiomatic
errors.Is(err, pgx.ErrNoRows) pattern. This is the recommended Go practice
for error comparison as it correctly handles wrapped errors from error
chains, making the code more robust against future refactoring that might
wrap errors with fmt.Errorf and %w.
When opening a sevenzip archive, the init() method calls sr :=SevenZipReader()
but never checked if sr was nil before using it. This could cause a nil
pointer dereference when processing malformed or empty archives. Add an
explicit nil check returning errFormat early if the subreader is nil.
Also fixes a minor import grouping whitespace issue.
Add table-driven tests for the conflict handler's source selection
methods: GetMostRecentSource, GetHighestProgressSource, and
GetEarliestSource. Covers cases where each device wins, ties, and
missing/invalid data.
strings.Title has been deprecated since Go 1.18 because it does not
handle Unicode properly. Replace it with cases.Title from
golang.org/x/text which correctly handles language-specific title
casing. Applied to breadcrumb generation and document title formatting.
Simplify pointer creation in media scanner validation messages and worker
job timestamps by using inline new() instead of local variable + address-of.
In media_scanner.go this cleans up three validation error message returns
(manga/comics library format checks). In worker.go it simplifies StartedAt
and CompletedAt timestamp assignments.
john-okeefe