Move roadmap backlog out of README

README.md

@@ -6,6 +6,8 @@ Current hosted version: <https://pdftools.add-ideas.de>
 
 Current release branch: **v0.3.4 — PDF.js `toHex` browser compatibility fix**. See [`CHANGELOG.md`](CHANGELOG.md) for milestone history.
 
+Active work is tracked in Gitea issues. Durable project context is mirrored into the Gitea wiki from repository docs, including [`ROADMAP.md`](ROADMAP.md).
+
 The app is a static React/Vite single-page application. There is no backend service, no server-side queue, and no server-side document storage. When hosted correctly, the server only delivers HTML, JavaScript, CSS, and static assets; PDF processing happens in the user's browser.
 
 ## Purpose
@@ -264,67 +266,9 @@ src/
   version.ts                      App version displayed in the header
 ```
 
-## Roadmap
+## Roadmap and backlog
 
-### Milestone 1: Fast preview and thumbnails
-
-- [x] Remove unused legacy page list view.
-- [x] Bound thumbnail generation by width and height.
-- [x] Display thumbnails progressively.
-- [x] Add preview page flipping.
-- [x] Attach preview controls to the modal container.
-- [x] Add first keyboard shortcuts.
-- [x] Cache thumbnails by page and rotation.
-- [x] Regenerate only changed rotated thumbnails.
-- [x] Show software version number.
-
-### Milestone 2: Real page workspace
-
-- [x] Introduce stable page references instead of only original page indices.
-- [x] Support duplicate selected pages.
-- [x] Save and reload the last state from browser storage.
-- [x] Support named workspaces.
-- [x] Store PDF binaries directly in IndexedDB.
-- [x] Reset workspace.
-- [x] Add command history as a foundation for undo/redo.
-- [x] Add undo/redo.
-- [x] Display undo/redo history with redo entries visually separated.
-- [x] Extract selection as a new active workspace.
-- [ ] Reduce undo/redo storage footprint if large documents make snapshots too heavy.
-- [ ] Add grid/list view toggle.
-
-### Milestone 3: Better merge and mobile handling
-
-- [x] Add a full multi-file merge queue.
-- [ ] Support drag-and-drop of PDFs into the page grid at the hovered position.
-- [ ] Add custom long-press drag on mobile.
-- [ ] Consolidate frequently used actions into a toolbar.
-
-### Milestone 4: Structural PDF editing
-
-- [ ] Metadata editing.
-- [ ] Crop pages.
-- [ ] Add tools directly in the preview overlay.
-- [ ] Read/fill/flatten forms.
-- [ ] Read bookmarks, then evaluate bookmark editing.
-- [ ] Read annotations, then evaluate annotation writing.
-
-### Milestone 5: Export and power tools
-
-- [ ] Basic text extraction.
-- [x] ZIP export for split results.
-- [ ] Optimize/compress MVP.
-- [ ] Carefully scoped encrypted PDF handling.
-
-## Non-goals for now
-
-- Server-side PDF processing.
-- Collaborative editing.
-- User accounts.
-- OCR.
-- Full content-stream editing.
-- Digital signature creation/validation workflows.
-- DMS replacement functionality.
+The roadmap and non-goals now live in [`ROADMAP.md`](ROADMAP.md). Open roadmap items are imported into Gitea issues so priorities, status, and implementation notes stay out of the README.
 
 ## License