fix(editor): open missing journal links from shortcut

[tiensonqin]

Summary

• create missing page refs when following links with the editor shortcut
• check the worker DB before creating, so pages not yet present in the UI DB still open normally
• add shortcut coverage for existing UI pages, missing pages, and worker-only pages

Root cause

follow-link-under-cursor! redirected directly to a page title. When a journal page created by /date was not yet present in the renderer DB, the route opened as a blank page instead of creating or resolving the page first.

Test plan

• rtk bb dev:test -v frontend.handler.editor-test

related to logseq/db-test#879

[Copilot]

Pull request overview

This PR fixes the editor “follow link under cursor” shortcut (mod+o) so that journal (and other page) links that aren’t yet present in the UI DB don’t open as blank pages. It does this by resolving the target page against the worker DB first (when missing locally) and only creating the page if it’s missing from both.

Changes:

• Added async page-following logic to resolve a page via worker DB before redirecting, and create the page if it doesn’t exist.
• Updated follow-link-under-cursor! to use the new page-following helper for non-URL links.
• Added test coverage for following links to (1) existing UI pages, (2) missing pages, and (3) pages present only in the worker DB.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/main/frontend/handler/editor.cljs	Adds async page resolution/creation path when following editor links via shortcut.
src/test/frontend/handler/editor_test.cljs	Adds shortcut-focused tests covering existing/missing/worker-only page link behavior.

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