Wynelson94/longhand

longhand demo — try Longhand on a sample corpus without touching your real history.

Added

• New longhand demo CLI command. Generates a sandboxed store at
  /tmp/longhand-demo-<timestamp>/, seeds it with 3 fictional Claude Code
  sessions covering a realistic Stripe-webhook bug + Supabase auth migration
  • downstream 401 fix on a demo-shop project, then walks through recall
    and recall_project_status against the seeded store so the user can see
    what the output looks like before pointing Longhand at their own data.
    Cleans up afterwards; pass --keep to leave the sandbox in place for
    further exploration with LONGHAND_DIR=<path> longhand ….
• longhand.demo package containing the corpus generator
  (longhand/demo/corpus.py) and walkthrough runner
  (longhand/demo/runner.py). 6 new tests verify the corpus is
  deterministic, valid Claude Code event shape, ingests cleanly into a
  fresh store, and that recall returns sensible results against the seeded
  data.

Why

The 2026-05-17 audit identified an onboarding gap: new users had no way to
preview Longhand on safe data before running longhand setup on their
real ~/.claude. longhand demo closes that gap with a 60-second
walkthrough that exercises the cross-session recall, file history, and
project-status surfaces without modifying anything on disk outside the
sandbox.

Tests

• 228 tests passing (was 222).