fix: Feedback widget should be standalone bug icon in nav bar

[deucebucket]

Problem

The feedback/bug report widget is a floating circular button in the bottom-right corner (base.html:895-907). On the dashboard, there's ALSO a "Quick Actions" floating button in the same area, creating two stacked floating buttons. Merijeek reported this as a UI no-no (issue #150 comment).

The widget also changes behavior depending on which page you're on, which is confusing.

What Should Happen

• Remove the floating feedback button from bottom-right
• Add a simple bug icon (🐛 or bi-bug) to the top navigation bar
• Clicking it opens the existing feedback modal (which is fine as-is)
• Should be consistent across ALL pages - same button, same behavior, same location
• The error auto-reporting (500 error interception) can stay as-is since that's a separate flow

Current Implementation

• Floating button: templates/base.html:895-907
• Feedback modal: templates/base.html:909-957
• Error feedback modal: templates/base.html:959-987
• JS functions: templates/base.html:1329-1431
• Dashboard quick actions (separate button, same area): templates/dashboard.html:65-99

Reported By

@Merijeek in #150 comment (Feb 16)

[deucebucket]

Fixed in PR #161 (merged to develop, beta.129). Feedback button moved from floating bottom-right to bug icon in nav bar.