AXI-114: Add personal workspace experience

[Codename-11]

What changed

• add a settings-driven personal/team workspace experience profile
• provide a personal Today dashboard with quick task and note capture, planning groups, completion, and agent handoff
• adapt workspace creation, navigation, and settings while preserving the full project and agent feature set
• add the Prisma migration, focused navigation tests, Playwright coverage, and screenshot-backed design QA notes

Why

Forge's project-oriented information architecture is powerful for teams but unnecessarily dense for personal tasks. This adds a calmer task-first presentation without splitting the tenancy model or removing agent access.

Impact

Personal workspaces open on Today and expose Tasks, Upcoming, Notes, Chat, Routines, and Agents. Team workspaces retain the existing project experience. Owners and admins can switch profiles without migrating or losing workspace data.

Validation

• pnpm prisma generate
• git diff --check origin/main...HEAD
• pnpm lint (passes with existing repository warnings)
• pnpm typecheck
• pnpm vitest run tests/unit/sidebar-nav.test.ts (11/11)
• pre-rebase implementation validation recorded in DEVLOG.md: production build, personal-workspace Playwright journey, broad Vitest gate, and desktop/mobile design QA

[chatgpt-codex-connector]

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