chore(template): clean-slate template snapshot from bb4a0c7

Curated, product-agnostic snapshot of the post-story-04 tree: demo
content deleted, auth-only reference feature, web-next shell, all gates
green. Product-specific docs, ADRs 027-029, PRDs/epics/archive, editor
library traces, and product naming are curated out; generic template
repairs (coverage provider devDeps, root test:coverage script, live
lint fixes, root-only release-please) are kept. See TEMPLATE.md for
provenance, curation list, and usage.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

.gitignore

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+# Dependencies
+node_modules
+
+# pnpm's content-addressable store (only present when a misconfigured
+# pnpm install places the store inside the project rather than at the
+# global default ~/.local/share/pnpm/store). Always ignored — the store
+# is pnpm's cache, not source.
+.pnpm-store/
+
+# Turbo
+.turbo
+
+# Build outputs
+dist
+build
+.next
+out
+storybook-static
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# Per-user local overrides (never commit — .claude/settings.local.json, etc.)
+*.local
+*.local.*
+**/settings.local.json
+
+# Testing — per-package coverage output (vitest)
+packages/*/coverage/
+apps/*/coverage/
+turbo/generators/coverage/
+# Aggregated coverage output (pnpm coverage:aggregate): ignore everything
+# under /coverage/ EXCEPT summary.json (committed for trend history per
+# ADR-020) and .gitkeep markers.
+/coverage/*
+!/coverage/summary.json
+!/coverage/.gitkeep
+# Keep the source scripts at scripts/coverage/ tracked (allows files
+# named "coverage" elsewhere)
+!/scripts/coverage/
+
+# OS
+.DS_Store
+Thumbs.db
+
+# IDE
+.vscode
+.idea
+*.swp
+
+# Debug
+npm-debug.log*
+pnpm-debug.log*
+
+# Superpowers brainstorm sessions
+.superpowers/
+
+# Git worktrees
+.worktrees/
+
+# Template setup history — preserved locally, invisible to fresh clones.
+.archive/
+
+# Scratch / working notes — local only, never committed.
+.tmp/