v0.7.0

Better onboarding + a verify_numbers parser fix, bundled.
Surfaced by direct user feedback ("pip install e2er and then
what?") and by the v0.6.1 live run on paper f79b7cd9 that hit
two false-positive critical mismatches caused by parser bugs.

Cross-lane

• New e2er init command — guided first-paper setup wizard.
  Closes the post-pip install e2er onboarding gap. Walks the
  user through 4 steps (LLM backend pick + prereq check, data
  module on/off, optional BibTeX path, optional Postgres
  DATABASE_URL), an optional GitHub-integration prompt, then
  writes ./.env (with confirm-overwrite), runs e2er install-skills, and prints three concrete example research
  questions to copy. Hand-rolled stdin wizard — no new
  dependencies (no click / prompt_toolkit). TTY-detected so
  non-interactive invocations exit with a helpful one-line guide
  instead of blocking on input(). Secrets discipline: GitHub
  PATs and API keys collected during the wizard are written to
  .env as comments, never as live env vars. 24 new unit tests
  in tests/test_cli_init.py. README quickstart updated to lead
  with e2er init.

Lane A — Pipeline

• Fix two verify_numbers false-positives: ISO date strings
  in column headers (2021-03-01) were being parsed as the bare
  year 2021, false-positive-mismatching against unrelated
  source values; and LaTeX brace-protected thousands separators
  (1{,}573.89 — the form that survives math mode) were being
  split into two bogus numbers (1 and 573.89). Both surfaced
  on the v0.6.1 live-validation paper f79b7cd9, which was
  REJECTED entirely on parser bugs rather than real
  hallucinations. New _normalize_cell(cell) helper runs
  before _NUMBER_RE on each tabular cell: normalizes {,} →
  , so the existing thousands branch picks the value up
  intact, then strips ISO / slash / US date patterns so years
  inside dates don't leak as numeric claims. Bare years outside
  date context (e.g. Sample size & 2021) still extract — the
  fix is targeted at dates, not all four-digit numbers. 5 new
  regression tests in tests/pipeline/test_verify_numbers.py.

Test counts

• Mocked suite: 554 passed (was 525 in v0.6.1; +24 wizard +5
  verify_numbers fix).