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>

build/hooks/hook-streamlit.py

@@ -0,0 +1,30 @@
+"""PyInstaller hook for Streamlit.
+
+The runtime needs three things PyInstaller's static analyser misses:
+
+1. Every submodule of ``streamlit`` (the framework reaches into
+   ``streamlit.runtime`` / ``streamlit.web`` / ``streamlit.elements``
+   via dynamic import).
+2. The static front-end assets (JS / CSS / fonts) under
+   ``streamlit/static/``.
+3. The vendored config / proto schemas under
+   ``streamlit/runtime/scriptrunner/`` etc.
+
+The main spec already calls ``collect_all('streamlit')`` so this
+hook is mostly belt-and-braces — but PyInstaller picks hooks up by
+name, and a missing hook can produce confusing runtime errors when
+Streamlit upgrades. Keeping it explicit here documents the
+dependency.
+"""
+
+from PyInstaller.utils.hooks import collect_all, collect_data_files, collect_submodules
+
+datas, binaries, hiddenimports = collect_all("streamlit")
+
+# Belt-and-braces: explicitly include the static directory.
+datas += collect_data_files("streamlit", subdir="static", include_py_files=False)
+
+# Some Streamlit components are loaded by name from the registry.
+hiddenimports += collect_submodules("streamlit.elements")
+hiddenimports += collect_submodules("streamlit.runtime")
+hiddenimports += collect_submodules("streamlit.web")