Add global header and sesh settings drawer

[marcodejongh]

Summary

• Unified persistent global header across all pages (home, board, notifications, library, profile, settings, etc.) with UserDrawer, search pill, and context-aware Sesh button
• New SeshSettingsDrawer with session info (name, participants, duration, goal), angle selector, and stop session button
• Elevated session ending to root-level PersistentSessionContext so ending a session works from any page (not just board routes)
• Simplified board page header by removing UserDrawer and fixed positioning (now a contextual toolbar)
• Added onAngleChange callback prop to AngleSelector for non-URL-based angle changes

Key Changes

File	Change
global-header/global-header.tsx	New persistent header component
global-header/global-header.module.css	Header styles
sesh-settings/sesh-settings-drawer.tsx	New sesh settings drawer
persistent-session-context.tsx	Added endSessionWithSummary, sessionSummary, dismissSessionSummary
persistent-session-wrapper.tsx	Renders GlobalHeader + root SessionSummaryDialog
home-page-content.tsx	Removed inline header, drawers, boardConfigs prop
board-page/header.tsx	Removed UserDrawer, AngleSelector; simplified to toolbar
board-page/angle-selector.tsx	Added optional onAngleChange prop
Board route layouts	Removed unused boardConfigs fetch
All page layouts/CSS	Added paddingTop for fixed global header

Test plan

• Global header appears on /, board pages, notifications, library, profile, settings
• Search pill opens UnifiedSearchDrawer (climbs on board routes, boards elsewhere)
• Sesh button is blue with no session, opens StartSeshDrawer
• Start a session, Sesh button turns sage green
• Tap sage green Sesh, opens SeshSettingsDrawer with angle selector
• Stop session from drawer, session saved, summary dialog appears
• Navigate between pages, header persists, bottom tab bar still works
• Test on mobile viewport (responsive behavior, safe area insets)
• Board page contextual toolbar still shows back button, search pill, angle selector, create button

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
boardsesh	Building	Preview, Comment	Feb 28, 2026 0:26am

[claude]

Claude Review

✅ Ready to merge - Minor issues noted below, but nothing blocking.

Issues

1. Duplicated magic padding value across 10+ files - The expression calc(max(8dvh, 48px) + env(safe-area-inset-top, 0px)) is hardcoded in CSS modules and inline styles throughout the PR. Consider extracting to a CSS custom property (e.g., --global-header-height) in theme config for maintainability.

2. Unused state variable - packages/web/app/home-page-content.tsx:41 - _selectedBoard is renamed with underscore prefix but never used. If the value isn't needed, consider removing the destructured state entirely.

3. No tests for new components - SeshSettingsDrawer and GlobalHeader are new components with user-facing functionality (session ending, navigation) but lack test coverage. The new context methods (endSessionWithSummary, sessionSummary, dismissSessionSummary) are also untested.