Nexus Legacy Companion Manual v0.2.1

Bugfix release focused on Firefox runtime stability.

Fixed:
- Fixed a vague “unexpected error” when opening the extension while logged into Nexus Legacy.
- Added automatic content-script loading on Nexus Legacy pages for Firefox.
- Added explicit support for both:
- https://nexuslegacy.space/
- https://.nexuslegacy.space/*
- Improved bridge error messages so failures explain whether the popup could not reach or inject the Nexus page bridge.
- Improved API JSON parsing errors so malformed endpoint responses identify the endpoint path.
- Bumped internal bridge version to 0.2.1 so refreshed game tabs load the new bridge.
- Rebuilt Firefox and AMO packages.

Added:
- New command-dashboard style popup layout
- Planet selector for switching between owned planets
- Priority-focused Overview page showing urgent items first
- New Intel tab with API endpoint health, galaxy map, alliance marker, outpost, and ranking payload visibility
- Richer Planet page with system context, resource rates, build queue, buildings, and defense summaries
- Improved Research page with active research, branch counts, status counts, and next candidates
- Improved Fleet page with owned fleet, missions, incoming fleets, shipyard queue, and outpost counts
- Current Arm scan button on the Planet Database page
- Better AMO-compatible zip packaging with forward-slash archive paths

0.2.0 Changed:
- Fully redesigned popup visual style for readability and faster scanning
- Redesigned Planet Database styling with sticky filters, clearer stats, and better table readability
- Survey wording cleaned up so unsupported actions are not implied
- README updated with new capabilities and scan notes
- Manifest description updated to reflect command dashboard and scout database features

Fixed:
- AMO validation issue caused by Windows-style archive file paths such as src\content.js
- Rebuilt Firefox, Firefox AMO, and Chrome packages with corrected archive paths