v1.2.0: Export studio overhaul

Added

• Paged export preview: toggle Page breaks in the live preview to see the document on A4 (default) or A5, A3, Letter, Legal, and Tabloid, using the same page-break algorithm as the PDF preview
• Eight distinct PDF templates: Novel, Brief, Thesis, Memo, Field Notes, Letter, Technical, and Magazine. Each has its own type, paper, margins, and page chrome, with a one-line differentiator on every card
• Tabbed export studio: PDF, HTML, and PNG each have their own path with guided steps (template → fine-tune → watermark)
• Full fine-tuning on every tab: 60-font Google Fonts library (searchable, live Aa previews) for body and headings, body/heading/link colours with an All the same / Each level heading mode, paper size, Narrow/Normal/Wide margins, Portrait/Landscape orientation, and a page-numbers toggle
• PNGs rendered from the real PDF: PNG pages are rasterized from the downloaded PDF bytes via pdf.js, so splits match the PDF page-for-page
• Smart filenames: downloads derive a short name from the first # H1 (or first content line), capped at 6 words / 60 characters, instead of the library title
• Pagewise PDF preview: the PDF tab shows every real page with template typography, chrome, watermarks, and folios

Changed

• PDF export is a real document, not a screenshot of HTML. Text is selectable, pages are true paper sizes in PDF points (orientation-aware), and line breaks happen in the typesetter instead of by clipping a canvas
• Fine-tune settings are shared across PDF, HTML, and PNG: what you see is what you download
• Template and preset cards are fixed-height, name-only rows with full descriptions in hover tooltips
• Mobile export studio hardened: zero measured overflow at 390px, stacked controls, in-flow font picker

Removed

• Real-time Mermaid diagram rendering from the editor, preview, and exports
• Legacy HTML-screenshot PNG pipeline (html-to-image, canvas watermark painter, capture host)
• Redundant top-level paper / margin export settings (superseded by fine-tune paper + margin presets)

Performance

• Initial JS roughly halved via vendor chunk splitting (export engines + motion load lazily)
• Welcome tour lazy loaded, preview rendering deferred, PNG preview debounced, sourcemaps removed from dist
• Google Fonts preconnect in document head

Planned

• Document folders & tagging within local storage

v1.1.0

Added

• Welcome tour — four-scene animated introduction (Framer Motion): miniature live-preview demo, privacy seal, capability grid with self-drawing Mermaid spark, export fan. Opens on first visit; the Q logo reopens it anytime.
• Document library — create (⌘/Ctrl+Alt+N), switch, duplicate, and delete documents; older single-document saves migrate automatically.
• Find & Replace — match counts, wrap-around navigation, match-case toggle (⌘/Ctrl+F, ⌘/Ctrl+H).
• Embedded images — paste or drop images as locally downscaled data URLs.
• Offline support — service worker caches the app shell (PWA-installable).
• Clear page · start fresh action in the Documents menu with one-step undo restore.

Changed

• Production site moved to https://quietmark.vercel.app
• Keyword-first SEO title/description; prerendered crawler content; FAQPage schema; llms.txt; HSTS
• Brand mark unified across favicon.ico, touch icons, OG image, and the app logo

Fixed

• Editor history duplicated entries after document switches, making undo skip states
• Mermaid diagrams sliced across PDF pages; oversized diagrams now auto-fit
• Storage quota failures surfaced honestly ("Not saved") instead of silently breaking autosave
• CSP violation from the no-js swap script (hash-exempted); Lighthouse Best Practices back to 100