CHUNK #3: Writing Surface — editor wiring, storage view, polish

Complete the Writing Surface chunk: wire the web writing view to the
offline-first storage adapter, finish the editor package exports, and
apply Step 4 polish (SVG monogram logo, real project in the sidebar,
font settings → CSS variables).

Editor package
- Re-export EditorContent + Editor type from @pubscript/editor so the
  web app never imports TipTap directly.

Web writing view (apps/web)
- project-store (zustand) over storageLocal: project, chapters, active
  chapter, autosave via createAutosave, idle detection via
  createIdleDetector.
- Client-side seed mirroring the server seed ("The Glass Harbor").
- WritingView component: editor + autosave label + word/scene count +
  chapter nav; wire the /write route inside AppShell.
- Import editor.css in main.tsx.

Core storage contract
- Extend StorageAdapter with createBook/listBooks/listChapters;
  implement in local + server adapters; update contract test mock.

Polish
- Sidebar: SVG monogram logo + live project title/word count instead
  of the placeholder "The Silent Cartographer".
- Fonts: applyFontSettings() in the theme engine writes --ps-font-*
  variables; .ps-content reads --ps-font-size/leading/measure; settings
  store applies fontSize on boot and change.

Docs
- PLAN.md: CHUNK #3 → in progress.
- CHUNK#3_PROGRESS.md: steps 1–3 done, step 4 polish in progress.

Verified: full workspace typecheck clean, lint clean, core 24 / ui 5 /
editor 7 tests pass, web build clean. (server vitest hits EADDRINUSE on
8080 — pre-existing Docker WordPress port conflict, unrelated.)

CHUNK#3_PROGRESS.md

@@ -0,0 +1,31 @@
+# CHUNK #3 — Editor & Writing View
+
+**Status:** In progress. Steps 1–3 committed. Step 4 (polish) in progress.
+
+## Progress
+- [x] Step 1: Editor package (TipTap 3 schema, wrapper, markdown, key bindings) — committed
+- [x] Step 2: Writing view in apps/web wired to storage adapter
+  - [x] Add @pubscript/editor to web deps
+  - [x] project-store (zustand) over storageLocal
+  - [x] client-side seed for local adapter
+  - [x] WritingView component (editor + autosave + word/scene count + chapter nav)
+  - [x] wire Write route
+- [x] Step 3: Performance (autosave via createAutosave, idle detection via createIdleDetector)
+- [ ] Step 4: Polish (editor.css import ✅, fonts 🟡, SVG monogram logo ✅)
+  - [x] editor.css import in main.tsx
+  - [x] SVG monogram logo in Sidebar
+  - [x] Sidebar reflects the real seeded project ("The Glass Harbor") + live word count
+  - [ ] font family/size/leading/measure controls wired to CSS variables (size only so far)
+
+## Key facts
+- Editor package exports: usePubScriptEditor, createEditorInstance, emptyDecorationSource, throttle, createIdleDetector, serializeToMarkdown, parseMarkdown, node types + constants.
+- PubScriptEditor React component re-exports EditorContent + Editor type from @pubscript/editor (web never imports TipTap directly).
+- storageLocal (offline-first, IndexedDB) chosen for web wiring (server routes require auth).
+- Demo prose lives in server/src/seed.ts ("The Glass Harbor", 3 chapters, 4 chars, 1 world, 1 board).
+- Web app uses @pubscript/core/local (storageLocal) — no server needed to run offline.
+- Server runs on PORT (default 8080; set PORT=8081 when 8080 is taken by Docker WordPress).
+
+## Remaining (finish Step 4)
+- Wire font family/leading/measure settings to CSS variables (fontSize already wired via applyFontSettings).
+- Add a settings UI control for font size (or confirm existing one applies).
+- Final polish pass: focus mode visual, empty-state copy, a11y labels.