feat: Tier B operator scaffolding — bundle, copy SoT, posts, emails

Pick up and finish yesterday's cut-off Tier B pass.

- build/: PyInstaller scaffold (datatools.spec + launcher.py +
  hook-streamlit.py + README) — folder-mode bundle, locked
  127.0.0.1, per-OS recipe
- marketing/COPY.md: single source of truth for every customer-facing
  string — landing H1/sub/CTAs, demo CTAs, email subjects, Gumroad
  listing, banned phrases
- marketing/community-posts/: 9 drafts (3 posts × 3 niches:
  bookkeeper, revops, shopify-pet) — story / tip / soft-offer
- marketing/emails/: 18 drafts (Gumroad delivery + 5-touch
  onboarding × 3 niches), per-niche segmentation guidance
- docs/NEXT-STEPS.md: flip 2.2 / 2.4 / 3.1 / 3.4 to done with
  pointers to the new assets; add Phase 0 inventory rows
- .gitignore: narrow `build/` ignore so PyInstaller spec + launcher
  + hooks get tracked, only generated artifacts (build/build/,
  build/__pycache__/, build/dist/) stay ignored

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

marketing/emails/shopify-pet/05-day30.md

@@ -0,0 +1,26 @@
+# Shopify-pet · Day 30 — Heard from another store owner?
+
+**Subject:** Heard from another store owner?
+**Send:** Day 30
+**Goal:** referral / review ask
+
+---
+
+Hi {{first_name}},
+
+A month in. If DataTools earned its $49 — would you do me one small favor?
+
+**Pick the one that's easiest.**
+
+1. **Gumroad review** (60 seconds): {{download_url}}#reviews — every line helps the next Shopify owner trust the listing enough to click "buy".
+2. **Reply to this email with one sentence I can quote** on the landing page. Anonymous if you prefer; I'll never use a name without explicit permission.
+3. **Share the landing page** with one fellow store owner who'd benefit: {{landing_page}}. No referral commission, just a link.
+
+If DataTools *didn't* earn its $49 — also reply. Tell me what's missing or broken. The 30-day refund window is still open and I'd rather refund than have an unhappy customer in the wild.
+
+Either way, this is the last automated email you'll get from me. After this you only hear from me when there's a v1.x update or if you reply to one of the previous emails.
+
+Thanks for being an early buyer — the first 50 customers shape the next 5,000.
+
+— Michael
+{{support_email}}