Eight U.S. legal task presets added to the built-in workflow catalog

The eight tasks are: Contract Review, Litigation Memo, Case Chronology, Discovery Summary, Deposition Prep, Demand Letter Draft, Client Intake Summary, and Privilege Review. Each is defined by a string id, a display title, and a prompt_md block. The prompts share a consistent structure: a brief framing statement, a set of explicit instructions (use only provided materials, do not invent statutes or case law, label assumptions, use U.S. legal terminology), and a numbered output section list. For example, Contract Review requests six output sections: Executive Summary, Key Terms, Potential Risks, Missing or Ambiguous Provisions, Negotiation Points, and an Attorney Follow-Up Checklist.

The definitions live in backend/src/lib/builtinWorkflows.ts (backend) and frontend/src/app/components/workflows/builtinWorkflows.ts (frontend), with a 74-line test file. The test file exercises the task list to confirm the expected IDs and titles are present - the eight task IDs become the recognized set for downstream features like the Review Table's Suggested Saved Legal Task column.

The onboarding checklist in OnboardingChecklist.tsx (143 lines) is threaded into the initial view, the project page, and the projects overview. It surfaces "Start Your First Matter" prompts for new users. This component is Gary-specific UX and tightly coupled to the fork's product framing.

The "Workflows" → "Saved Legal Tasks" rename is tracked in the terminology map. User-facing labels, sidebar text, and empty-state copy all use the new name consistently after this commit.