Phase 3 (EPUB half) of the reader redesign:
- Select text in a reflowable book → floating glass popover at the
selection (5 colors, note, copy). Clicking a color creates the
highlight via POST /api/media-items/:id/highlights, anchored by the
foliate range CFI (epubcfi_start) with percentage position.
- Highlights render through foliate's overlayer pipeline: draw-
annotation draws Overlayer.highlight with the stored color,
create-overlay re-adds persisted highlights as sections load,
show-annotation opens the edit popover when a highlight is clicked
(recolor, edit note, copy, delete).
- Backend: highlight create/update accept epubcfi_start/end,
note_text, and percentage fields; position validation relaxed
(CFIs exceed the old 100-char cap); PUT routes through
AnnotationService.SaveHighlight so edits get dedup/LWW treatment
and actually persist note_text (the plain query can't).
- Bookmarks drawer becomes the Annotations drawer with tabs:
Highlights (color-bar list, note previews, jump/edit/delete),
Notes (add note at current position, list, delete — backed by the
existing notes API), and Bookmarks (unchanged behavior).
- Popover dismissed on outside click, collapsed selection, page
navigation, or Esc (new top-priority Esc branch).
Phase 2 of the reader redesign:
- Fixed-layout touch engine (foliate-js e9e61d8): pinch-zoom around
the midpoint, two-finger pan, single-finger pan while zoomed,
horizontal swipe page-turn at fit (RTL-aware via next()/prev()),
and double-tap to zoom 2.5x / reset. Touch events forwarded from
page iframes with converted coordinates; preventDefault only when
the engine consumes the gesture, so PDF text selection and native
taps stay intact. touch-action: none on the host and in comic/pdf
page documents keeps the browser from fighting the engine.
- Tap zones (Kindle-style) for touch devices: tap the outer margins
to page, center to toggle chrome. Size configurable (10-50%) via
the revived tap_zone_size setting; toggle via new tap_zones_enabled
(Behavior section of the settings drawer). Pointer-based + passive
so drags/swipes/selection never trigger; attached both to the
viewport and inside every page document (iframe events don't
bubble); debounced 280ms so double-tap zoom doesn't also page; no
zone actions while a fixed-layout page is zoomed.
- Drawers become full-width sheets on screens <= 640px.
Phase 1 of the reader redesign:
- Reading surface is edge-to-edge; top/bottom bars overlay
translucently (backdrop-blur) instead of reserving insets, killing
the inset-coordination bug class entirely. Chrome auto-hides after
2.5s of pointer inactivity (chrome_behavior setting finally wired:
auto-hide / always-visible; legacy values map to auto-hide). Pointer
activity inside page iframes keeps it awake; Esc toggles.
- TOC / Settings / Bookmarks become slide-over drawers with a scrim
(z-50, full-height, safe-area aware), replacing the dockable-panel
system and its window-shade headers. Only one drawer opens at a
time; Esc or scrim click closes.
- Bottom bar is contextual: reflowable keeps nav/slider/progress/TOC;
fixed-layout row adds Fit Page/Width select, zoom cluster,
magnifier (now shows active state), Double Page Spread toggle, and
a Smart | Pan | Text segmented control replacing the cryptic
two-state icon. Smart = text-aware drag; Text = selection-only
(manual smart-detect off); Pan = force pan. Choice persists via
pdf_interaction_mode (new setting + foliate 29bc958 'text' mode).
- Settings drawer: Behavior (chrome, progress mode), Appearance with
18 Kindle-style theme swatches (single source of truth from
THEME_COLORS), Typography, Layout — each scoped by format.
- Keyboard: t/s/b open TOC/settings/bookmark, Esc closes drawers
before toggling chrome, shortcuts skip form inputs; both slider
rows tracked correctly (no duplicate-ID lookups).
- Topbar: Back, title, add-bookmark, bookmarks drawer, Aa settings;
chrome follows user theme.
Phase 0 of the reader redesign:
- Panels no longer render under the top/bottom bars: sidebars get
measured insets (same resize/safe-area mechanism as the viewport);
panel max-height now derives from the bounded sidebar instead of a
100vh guess; right-side border targets the actual sidebar.
- Bookmarks work end-to-end for the first time: REST CRUD under
/api/media-items/:id/bookmarks (create/delete route through
AnnotationService for dedup/LWW/tombstones), fix UpdateMediaBookmark
referencing nonexistent updated_at column, frontend posts to the
real API with per-format position (CFI vs page), live list with
jump + delete instead of SSR-only snapshot.
- Fix chapter matching in progress saves: boundaries were compared by
a nonexistent tocItem property, so chapter was never persisted.
- Remove dead UI: Navigator panel stub, empty dictionary popup shell,
unwired Chrome Behavior select; purge 160 stale build artifacts.
- Reader chrome now follows the user's app theme instead of hardcoded
theme-tokyo-night.
The double_page_spread checkbox in the reader settings panel was inert:
it had no Alpine binding, no apply logic, and no persistence. Default
was also inconsistent (false in settings-manager, absent from server
defaults).
- Add doublePageSpread state to the reader Alpine component, loaded
from saved settings (default true)
- Add applyDoublePageSpread() which sets the renderer's 'spread'
attribute to auto/none and persists the setting via saveSettings
- Apply the spread attribute during fixed-layout renderer init
- Bind the settings checkbox with x-model and @change
- Add double_page_spread: true to ReaderService server defaults so
new users get the same starting value the client expects
- Also improve the PDF pan/select toolbar button: distinct smart-
select vs pan icons, highlighted state while pan mode is active,
and dynamic tooltips/aria-labels explaining each mode
The reader's back button was hardcoded to the book detail page
(/media/{id}), so even when you launched the reader straight from the
dashboard the back button ignored that and sent you to the detail view.
Mirror the existing book-detail.ts referrer pattern: capture
document.referrer into sessionStorage on load (excluding other reader
pages and the reader's own URL), then override the back link's click to
navigate there. Falls back to the link's original href (/media/{id}) when
no valid referrer exists (direct URL access).
On phones the footer's progress cell rendered the full chapter title (e.g. 'Long Chapter Name · 5 / 12') in a div with no max-width or nowrap, so the text wrapped to multiple lines and ballooned the bottom bar. Combined with viewport offsets that were computed from assumed pixel heights with ~0px margin, the book text slipped underneath the bars.
Chapter label in footer: split #progress-display into two spans (progressLabel hidden on mobile via 'hidden sm:inline', progressMain always shown) and cap it with 'truncate whitespace-nowrap max-w-[5rem] sm:max-w-none' so it can never wrap or grow the bar. Phones now show just '5 / 12'; larger screens keep 'Chapter · 5 / 12'.
Viewport offset: replace the fragile hardcoded calc() with runtime measurement. Gave the chrome bars ids (reader-topbar/reader-bottombar) and added updateViewportInsets(), which sets #reader-viewport top/bottom from each bar's real offsetHeight (which already includes env(safe-area-inset-*) padding) plus a 6px margin. It runs on init and refreshes on resize, orientationchange, and via a ResizeObserver, so the content area tracks the actual chrome height on any DPI, notch, home-indicator, or zoom level instead of guessing.
Refactored formatProgress into formatProgressParts (returns {label, main}; only chapter mode sets a label) with a setProgress() helper wiring progressLabel/progressMain/progressText across the relocate, cycleProgressMode, and applyProgressMode call sites. Rebuilt reader_templ.go and style.css.
The web reader now captures ~100 chars of visible text from the
foliate relocate event's range and includes it as context_text in
the progress PUT body for reflowable formats.
This enables the server's reverseByTextSearch fallback in
ConvertStandardToCRE, which is critical for single-file EPUBs
(e.g. 1984) where foliate emits coarse or fake-section CFIs that
CREngine cannot directly resolve. Previously only the KOReader
plugin sent context_text; the web reader's omission left the
fallback unusable, causing percentage-based position estimation
that was off by ~1 page.
Changes:
- Add contextText state property (line 387)
- Extract visible text from e.detail.range in relocate handler,
normalize whitespace, and slice to 100 chars (lines 508-512)
- Include context_text in saveProgress PUT body for reflowable
EPUBs only, alongside epubcfi (line 575)
The server-side chain was already wired: media.go accepts it,
progress.go stores it, and koreader.go passes it to the CFI
converter. No Go changes needed.
The web reader's saveProgress always sent epubcfi: cfi || "", even
for fixed-layout comics/PDFs. Foliate's comic renderer generates a
fake CFI (epubcfi(/6/{n})) for every page via CFI.fake.fromIndex,
which the server stored as a valid locator. These fake CFIs are
meaningless — the page index is the canonical locator for image-based
content — and they caused koreader to crash on pull (see prior commit).
Only set epubcfi in the request body for reflowable documents.
foliate's goLeft/goRight (and spread ordering) swap on book.dir ===
"rtl", but makeComicBook never sets dir, so manga/comic archives
always paged left-to-right even when the metadata says right-to-left.
For fixed-layout content, set this.book.dir = "rtl" from the
readingDirection metadata after the book opens. Reflowable EPUBs are
unaffected: they keep whatever direction foliate read from the OPF.
This is scoped to isFixedLayout (FXL EPUB, PDF, comics) so it cannot
reach the reflowable path.
Fixed-layout EPUBs, PDFs, DjVu, and comic archives (cbz/cbr/cb7/cbt)
are page-based: each page is a fixed image, so a page index is an exact,
universal locator regardless of screen size or device. Sync previously
treated these like reflowable content (CFI-first restore, percentage
fallback, character-offset math), which was both wrong and lossy. This
makes the page index the canonical position for fixed-layout and comic
formats while leaving the reflowable path byte-for-byte unchanged.
Backend:
- progress.go SaveProgress: branch on mediaItem.FormatGroup. For
fixed_layout/comic_archive derive percentage from current_page/
total_pages and skip the CFI/character-offset back-fills (meaningless
for image content). The reflowable derivation block is preserved
verbatim under an else.
- kobo.go: Kobo only sends a percentage, so for fixed-layout/comic
formats derive CurrentPage via PercentageToPage(percentage, pageCount)
using the media item's known page count, so Kobo->web lands on the
exact page.
Reader:
- reader.templ readerInitExpr: pass savedPage/savedTotalPages to the
reader config for fixed_layout/comic_archive formats.
- reader.ts: when isFixedLayout and savedPage is present, restore via
view.init({ lastLocation: savedPage - 1 }) (a bare number navigates
foliate directly to the section index). Reflowable falls through to
the existing CFI->percentage path, unchanged.
- reader.templ: divide DB percentage (0-1) by 100 was wrong; actually
the router multiplies by 100, so template now divides by 100 to get
back to 0-1 range for foliate-js savedPercentage
- reader.ts: add 5-second initTime guard to prevent overwriting
existing progress with initial position on page load
PDFs failed to open with error:
Invalid factory url: "http://localhost:8765/static/undefined"
Root cause: foliate-js's pdfjsPath() uses new URL(dynamicPath, import.meta.url)
to resolve runtime asset paths (standard_fonts/, cmaps/). Vite transforms this
pattern into a static asset map lookup at build time, but can only resolve
known static file paths — not dynamically-constructed directory paths. The
lookup returns undefined, producing a broken URL.
Fix (two parts):
1. foliate-js fork (commit d164d6f): Export an overridable config.pdfjsPath
function. Module-level code (worker, CSS) continues using import.meta.url
directly (works fine with Vite for static filenames). The makePDF function
uses config.pdfjsPath for runtime paths, allowing consumers to override it.
2. Bookhoard changes:
- Update foliate-js dependency to d164d6f
- Override config.pdfjsPath in reader.ts to resolve to /static/vendor/pdfjs/
- Add Vite plugin (pdfjsAssets) that copies standard_fonts/ and cmaps/ from
node_modules to the build output during vite build (the standard approach
used by react-pdf and other pdfjs-dist consumers)
- Remove manual cp commands from build:ts scripts
Remove 185 binary files (169 CMaps + 16 standard fonts) from git
tracking. These are build artifacts copied from
node_modules/@bookhoard/foliate-js at build time and should not be
version-controlled.
Changes:
- Remove web/static/vendor/pdfjs/ from git (169 cmap files + 16
standard font files)
- Add web/static/vendor/ to .gitignore
- Drop CJK cmap copying from build scripts — the app is English-only
and CJK support can be re-added later if needed (saves ~1.7MB in
the container image)
- Update all three build scripts (build:ts, build:ts:dev,
build:ts:watch) to copy only standard_fonts/ from node_modules
- Remove cMapUrl from reader.ts PDF config since we no longer ship
cmaps
- Keep standardFontDataUrl pointing to the build-copied fonts which
are needed for PDFs with non-embedded standard fonts (Helvetica,
Times, Courier, etc.)
foliate-js could not locate cmaps and standard_fonts at runtime because
no explicit paths were provided to the PDF.js config. This caused
rendering failures for PDFs using CJK fonts or standard PDF fonts.
Changes:
- Pass cMapUrl and standardFontDataUrl to view.open() in reader.ts
- Pin foliate-js fork to commit 74c317d in package.json for reproducibility
- Update build:ts script to copy cmaps/ and standard_fonts/ to
web/static/vendor/pdfjs/ during build
The reader's saveProgress() now sends a more complete payload to the
backend so ProgressService has more data for enrichment and merge:
- chapter: computed from TOC boundary index instead of missing
- reading_mode: current display mode (page, chapter, percent, time-left)
- zoom_level: for fixed-layout books (renderer.zoomPercent / 100)
- current_page: real page number for fixed-layout, location.current for
reflowable
- total_pages: section count for fixed-layout, location.total for
reflowable
Adds computeChapterPageBoundaries(doc) for reflowable EPUBs that maps
TOC anchors to rendered page numbers, recomputes after fonts load.
Adds computeFixedLayoutChapterBoundaries() for fixed-layout books that
resolves TOC hrefs to page indices via view.resolveNavigation().
Updates reader.templ to expose isFixedLayout to Alpine init.
Connect the existing progress_mode setting dropdown to the reader's
progress display. Four modes are now functional:
- pages: overall percent + page/location number (default, existing)
- chapter: chapter title + page X / Y within current section
- percentage: overall percent only
- time-left: percent + estimated time remaining via reading speed API
The progress display in the bottom bar is now clickable to cycle through
modes with immediate visual feedback. The settings dropdown is bound
with x-model for persistence. Reading speed is fetched once on init
from the backend reading-speed API for time-left estimates.
The web reader had all the infrastructure for progress persistence
(updateReadingProgress/getReadingProgress API functions, PUT/GET
endpoints, database queries) but the reader.ts never called them.
Changes:
- Add debounced (2s) saveProgress call on every relocate event that
PUTs percentage, current_page, total_pages, and epubcfi to the
existing /api/media-items/:id/progress endpoint
- Replace renderer.next() with view.init({ lastLocation }) to restore
the reader to the last saved position on load (CFI first, then
fraction fallback, then default first page)
- Pass savedPercentage and savedCfi from server-side progress data
through readerInitExpr config to the JS initReader function
- Add mediaItemId and saveTimeout to the Alpine data object
This fixes both the blank /progress page and the missing progress
section on book detail pages — both were empty because the
reading_progress table never received any data from the web reader.
- Remove Playwrite NZ Guides test font and all references (FONT_MAP,
FONT_FILES, reader-fonts.css, dropdown option, font files)
- Move settings panel from left sidebar to right sidebar (left sidebar
now only contains TOC)
- Move Restore Defaults button from top bar icon to a styled button
inside the settings panel, side by side with Done button
The paginator renders inside a sandboxed iframe that blocks @font-face
URL fetches. Fonts were never loading — all font-family rules fell back
to the generic 'serif' system font, making every reading font identical.
Fix: fetch font files on the parent page, create blob: URLs via
URL.createObjectURL(), and use those blob URLs in the @font-face rules
injected into the iframe via setStyles(). Blob URLs are always
same-origin with the creating document, so the sandboxed iframe can
access them with allow-same-origin.
Also added Playwrite NZ Guides as a test font for verifying font
switching works.
Fonts weren't loading because the paginator renders inside a sandboxed
iframe. @font-face declarations in the parent page's CSS are invisible
to the iframe's document. Even injecting @font-face rules via
setStyles() may not trigger font loading in sandboxed iframes.
Fix: inject a <link> to reader-fonts.css directly into the iframe's
document on each section load, so @font-face declarations are parsed
in the iframe's own document context where font-family rules can
reference them.
Also:
- Remove foliate-themes.css entirely (no longer needed)
- Set viewport background color directly via JS using THEME_COLORS map
- Remove reading theme CSS classes from viewport element
background: none on html/body exposed the iframe's default black
background in gaps around the content. Now uses background-color
matching the theme color, and stops forcing background on body *
which caused black bars around page margins.
The paginator renders book content inside a sandboxed iframe within a
closed shadow DOM. @font-face declarations from the parent page's
reader-fonts.css are NOT available inside the iframe's document context.
All font-family rules fell back to the generic 'serif' system font,
making every reading font look identical.
Fix: prepend all @font-face declarations (Literata, Crimson Pro,
Source Serif 4, EB Garamond, Libertinus Serif, Noto Serif, Charis SIL,
IBM Plex Serif) into the CSS string returned by getCSS(), so they're
injected into the iframe via renderer.setStyles().
Comic Sans MS is a system font not available on Linux. The cursive
fallback rendered as a script font, giving false negatives. All 8
loaded reading fonts are serif fonts loaded via @font-face, so they
intentionally look similar — font switching is confirmed working.
Studied grimmory-tools/grimmory's ebook-reader style.service.ts and adopted
their approach:
- Replace CSS custom property resolution (getComputedStyle) with a hardcoded
THEME_COLORS map containing concrete fg/bg/link values for all 18 themes
in both light and dark modes. No more variable resolution failures.
- Font family now targets body + body * with !important, overriding book CSS
on every element (matching grimmory's approach).
- Colors use grimmory's aggressive pattern:
html, body { color: ... !important; background: none !important; }
body * { color: inherit !important; background-color: ... !important; }
This forces reading theme colors on ALL book elements, overriding inline
styles and book stylesheets.
- Line height uses !important on p, li, blockquote, dd to override book CSS.
- Removed fragile getComputedStyle calls entirely. getCSS() now receives
themeName and themeMode parameters for direct color lookup.
- Add Comic Sans MS as a test font option to verify font switching works
- Add !important to background-color and color in getCSS() to prevent
book CSS from overriding user's reading theme colors
- Expand font size range from 12-24px to 10-40px, bump default to 18px
- Expand line height range from 1.0-2.5 to 0.8-3.0
- Add restoreDefaults() method that resets reading theme, font, size,
line height, and justify/hyphenate to sensible defaults
- Add ↩️ restore defaults button in top bar underneath the settings gear
Two root causes fixed:
1. Reading theme CSS variables were on document.body, leaking font/color
into chrome UI. Now scoped to #reader-viewport so chrome keeps its own
theme (system font, --text-primary colors) while the reading area uses
reading theme colors/background.
2. getCSS() never received font family, font size, or line height settings.
The settings UI (dropdowns, sliders) saved values but they were never
injected into the book's shadow DOM. Now getCSS() accepts all four
settings and generates proper CSS rules for them.
Changes:
- Wrap foliate-view in #reader-viewport div (absolute positioned between
chrome bars)
- getCSS() reads computed style from #reader-viewport, not document.body
- getCSS() params expanded: fontFamily, fontSize, lineHeight, justify,
hyphenate (removed unused 'spacing')
- Added FONT_MAP to translate setting keys to CSS font-family values
- applyTheme() targets #reader-viewport instead of document.body
- Removed dead #reader-viewport typography rules from foliate-themes.css
(shadow DOM doesn't inherit outer styles), kept only background-color
Two fixes:
1. Remove base typography block from foliate-themes.css. The html/body
rules were unlayered CSS that overrode the chrome theme's layered
body styles, causing dark reading theme text colors (--reader-text)
to apply to the outer chrome UI on dark backgrounds. These styles
are only meant for the shadow DOM, which getCSS() already handles.
2. Move missing typography rules (img, blockquote, a, p orphans/widows)
into getCSS() so the shadow DOM still gets them.
3. Add sun/moon emoji indicators to the light/dark toggle switch.
Add explicit light/dark mode toggle switch to the reading theme settings.
The reading mode defaults based on the chrome theme (dark chrome themes
like tokyo-night default to dark reading mode).
- Add readingMode property to readerShell Alpine component
- Add toggleReadingMode() method that toggles dark class on body
- Add detectChromeDarkMode() to infer default from chrome theme
- Update applyTheme() to add/remove dark class and persist reading_mode
- Add toggle switch UI in settings panel (blue pill style, next to
Reading Theme heading)
- Add reading_mode to default settings in settings-manager
Books were failing to load because foliate-js fetches the file URL
without auth headers, getting rejected by JWT middleware. Also,
reading themes were not being applied because getCSS() didn't
inject background/text colors into the book iframe.
- Fetch book file with Bearer token, pass as File (not URL) to
view.open() so foliate-js can detect format via filename extension
- Add reading theme class to body so foliate-themes.css activates
the correct --reader-bg/--reader-text CSS variables
- Update getCSS() to read theme colors from outer page and embed
them in the iframe CSS string (background-color, color, link
color, selection color)
- Fix Alpine.start() deadlock: move call outside the alpine:init
listener so Alpine actually initializes
- Remove unused tocItem from relocate handler destructuring
- Replace apiGet/apiPut with direct fetch in settings-manager to
fix /api prefix mismatch (reader routes are at /readers/*, not
/api/readers/*)
Major rewrite of the web reader to properly interface with
@bookhoard/foliate-js, replacing the abandoned panel-detection
architecture with direct pan and zoom support built into the
foliate-js FixedLayout renderer.
Template (reader.templ):
- Fix critical bug: x-init config was using literal strings
'{ readerData.X }' inside a quoted attribute, which templ
treated as raw text and never interpolated. Values were never
actually passed to JavaScript. Now uses fmt.Sprintf() with
templ's expression attribute syntax ={ }.
- Pass fileUrl from server so foliate-js can open books directly.
- Redesign bottom bar with foliate-js parity: left/right navigation
buttons, progress slider with tick marks, and zoom controls
(zoom out, percentage display, zoom in, magnifier, pan/select
mode toggle for PDFs).
- Remove panel editor button and enablePanelDetection config.
- Add SVG icon styles for consistent reader controls.
Go types (templates/types.go):
- Expand ReaderMetadata with FormatGroup, MangaType,
ReadingDirection, FileURL, and LibraryID fields needed by
the reader frontend.
Router (internal/router/reader.go):
- Populate new ReaderMetadata fields from database values.
- Construct FileURL from library ID and file path for the
/uploads/library-{id}/* file serving route.
Reader JS (reader.ts):
- Full rewrite modeled on foliate-js Reader class, adapted for
Alpine.js. Opens books via view.open(fileUrl), accesses
view.renderer for zoom/pan/navigation, and wires up keyboard
shortcuts (+/-/0 for zoom, arrows for nav, Escape for magnifier).
- Uses view.isFixedLayout instead of importing FixedLayout class,
avoiding a TypeScript module resolution issue with the Vite alias.
Settings manager (settings-manager.ts):
- Remove dependency on deleted ReaderContext event bus.
- Export loadSettings/saveSettings/syncSettings directly as
standalone async functions.
Cleanup:
- Delete reader-context.ts and reader-events.ts (over-engineered
event system replaced by direct function calls).
- Remove panel_zoom_enabled from ReaderSettings type.
- Add enablePanelDetection, libraryType, formatGroup state
- Add panelDetector instance for dynamic loading
- Update initReader to accept and process configuration
- Conditionally load panel detection only when enabled
- Use dynamic import for foliate-js/panel-detection.js
- Add error handling for panel detection loading
Create minimal Alpine.js integration for foliate-js reader. This file
serves as the entry point that imports foliate-js and provides basic
navigation controls.
Implementation:
1. Import foliate-js/view.js:
- Registers <foliate-view> custom element globally
- Makes foliate reader functional when element is added to DOM
- No explicit EPUB imports needed (foliate detects format automatically)
2. Alpine.js integration:
- Create readerShell data object for UI state management
- Provide nextPage() and previousPage() methods for button controls
- Methods access <foliate-view> custom element's API (next(), prev())
- Simple, functional approach (no OOP, follows project guidelines)
3. Init placeholder:
- initReader() method for future initialization logic
- Currently just logs for debugging
- Will be extended with theme switching, progress sync, etc.
Design Choices:
- Follow project guidelines: No classes, functional/procedural style
- Use Alpine.js for UI state (consistent with rest of application)
- Defer book loading to foliate's internal format detection
- Minimal footprint: Only what's needed to make <foliate-view> work
Next Steps (Future Commits):
- Theme switching logic (apply CSS custom properties)
- Progress sync to API (listen to foliate's relocate event)
- Book loading integration (open book path, handle CFI locations)
- Settings persistence (save theme, font, spacing preferences)
File: web/src/reader/reader.ts (31 lines)
- Clean separation: Foliate handles rendering, Alpine handles UI state
- Type-safe with @ts-ignore for foliate custom element API access
- Move ReaderMetadata from api.ts to reader.d.ts as global type
- Add format_group field for format detection (reflowable/fixed_layout/comic_archive)
- Add library_type_name for library type (ebooks/comics/manga/pdf)
- Add manga_type for manga-specific reading direction metadata
- Remove duplicate mime_type field and fix typo (unkown -> unknown)