v2.0.0-alpha.1

What's Changed

• feat: seed starter personas (Code Reviewer, Writing Assistant, Research Analyst, Rubber Duck) by @andrewchumchal in #12
• chore: replace release-please with tag/workflow_dispatch publishing by @andrewchumchal in #13
• Add starter personas and update publishing workflow by @andrewchumchal in #26
• Add starter personas and enhance publishing workflow by @andrewchumchal in #27
• feat: app shell — activity bar + primary sidebar panel switching (#14) by @andrewchumchal in #30
• feat(tabs): tabbed conversations by @andrewchumchal in #32
• feat(status-bar): ambient status bar by @andrewchumchal in #35
• feat(command-palette): ⌘K command palette by @andrewchumchal in #36
• feat(#31): Remove TopBar — fold controls into TabBar + welcome screen + keyboard shortcut hook by @andrewchumchal in #39
• feat(#33): Notification system — AppNotification type, uiStore actions, NotificationBell in StatusBar by @andrewchumchal in #41
• feat(#37): JSON-based settings + schema-driven UI by @andrewchumchal in #42
• feat: bottom panel — Tool Calls, Token Usage, Debug Console (#18) by @andrewchumchal in #43
• feat(#38): Phase 1 — command registry by @andrewchumchal in #44
• feat: themesStore + ActivityBar manage menu + keyboard shortcuts editor (#21/#25) by @andrewchumchal in #45
• feat: marketplace live registry integration (Phase 3) by @andrewchumchal in #46
• feat: Extension Platform SDK (Phase 1 & 2) by @andrewchumchal in #48
• fix: correct prerelease semver and add --tag alpha to publish workflow by @andrewchumchal in #49

Full Changelog: v1.2.0...v2.0.0-alpha.1