feat: Migrate file downloads to direct anchor element clicks within the popup, removing `chrome.runtime.sendMessage` usage.

feat: Update root node name formatting and enhance export completion alert details

chore: Update application icon.

feat: Add edge maps and caching for efficient link-to-node matching, replacing iterative lookups and refactoring markdown generation.

chore: bump version to 1.0.0 for initial release

docs: add Chrome extension installation instructions to README

Merge pull request #2 from rootsongjc/imgbot

Enhance Markdown export functionality to include statistics on node counts and missing nodes, fix the issue #1 temporarily

Remove output.md file containing character descriptions and story details

[ImgBot] Optimize images

Add statistics output for mindmap parsing results

Enhance mindmap parsing to include node colors and improve Markdown output for missing nodes

Add mindmap exporter functionality and promotional materials

Initial commit