chore: import upstream snapshot with attribution

.gitignore

@@ -0,0 +1,157 @@
+# Dependencies
+node_modules/
+
+# Build output
+dist/
+*.tsbuildinfo
+
+# Environment
+.env
+.env.local
+.env.*.local
+
+# Lefthook per-developer overrides (not shared; see lefthook.yml for shared hooks)
+lefthook-local.yml
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Docs media — served from CDN, not committed.
+# Regenerate with scripts/generate-{catalog,template}-previews.ts then upload
+# with `bun run upload:docs-images`. Add explicit negations below for any
+# non-generated assets (logos, svgs) that should stay in the repo.
+docs/images/
+
+videos/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# Test
+coverage/
+.debug/
+
+# Producer regression test failures (generated debugging artifacts).
+# RECURSIVE (`**`) so a failures/ dump at ANY fixture depth is ignored — the
+# old non-recursive `tests/*/failures/` + `tests/distributed/*/failures/` rules
+# only matched one level deep, so a nested fixture like
+# `tests/hdr-regression/hdr-pq/failures/` could still get committed.
+packages/producer/tests/**/failures/
+packages/producer/tests/parity/fixtures/hyperframe.runtime.iife.js
+
+# Player perf test results (generated each run, attached as CI artifact)
+packages/player/tests/perf/results/
+
+# Rendered output (not test fixtures — those use git LFS)
+output/
+renders/
+!packages/producer/tests/*/output/
+!packages/producer/tests/distributed/*/output/
+# Source dir that the renders/ output rule accidentally shadows (its files are
+# tracked; without this, pre-commit's format re-stage fails on them).
+!packages/studio/src/components/renders/
+
+# Composition source media (large binaries)
+compositions/**/*.mp4
+compositions/**/*.mov
+compositions/**/*.MOV
+
+# npm pack artifacts
+*.tgz
+
+# Logs
+*.log
+npm-debug.log*
+
+# Temporary
+tmp/
+.tmp/
+
+# Generated files
+packages/core/src/generated/*
+!packages/core/src/generated/position-edits-render-inline.ts
+!packages/core/src/generated/position-edits-render-inline.test.ts
+packages/producer/src/services/fontData.generated.ts
+
+# Plan documents (working artifacts, not committed)
+docs/plans/
+
+# Local proof / test artifacts
+qa-artifacts/
+my-video/
+# Studio project state (hf-id backups, per-file state) — always runtime-generated,
+# never committed. Broadened from .hyperframes/backup/ after preview-generated state
+# leaked into a fixture commit.
+.hyperframes/
+examples/*
+# Tracked OSS examples — negations override the blanket `examples/*` ignore.
+!examples/aws-lambda
+!examples/aws-lambda/**
+!examples/k8s-jobs
+!examples/k8s-jobs/**
+!examples/gcp-cloud-run
+!examples/gcp-cloud-run/**
+# …but never the local smoke run's build/render artifacts.
+examples/gcp-cloud-run/scripts/gcp-smoke-artifacts/
+packages/studio/data/
+
+.desloppify/
+.worktrees/
+
+# Playwright MCP browser cache
+.playwright-mcp/
+
+# Installed skills (user-specific)
+.agents/
+.claude/skills/
+skills-lock.json
+
+# Skills from other PRs (not managed here)
+skills/hyperframes-animation-map/
+skills/hyperframes-contrast/
+
+# Capture outputs
+captures/
+# Legacy test captures at repo root (use captures/ instead)
+*-capture/
+*-demo/
+*-ad/
+*-tour/
+*-brand/
+
+# Local regression-test and video project scratch directories.
+# These hold per-site captures, compositions, narration audio, rendered MP4s.
+cursor-tests/
+basecamp-video/
+launch-video*/
+!skills/launch-video/
+ab-test/
+compositions/
+video-6-2-patched/
+claude-design-hyperframes-video/
+# Per-site video work at the repo root (huly-*, raycast-*, etc.)
+# Anything under videos/ is already covered above, but agents sometimes write
+# project dirs to the repo root when iterating. Catch the common per-brand
+# patterns and any *-demo-N variants the *-demo/ rule above misses.
+huly-*/
+raycast-*/
+*-demo-*/
+test-runs/
+test-outputs/
+
+# Claude Code worktrees + superpowers docs
+.claude/worktrees/
+.claude/
+docs/superpowers/
+.worktrees
+hyperframes-bench/
+tmp/
+# Studio-generated preview thumbnails
+.thumbnails/
+
+# Local editor settings
+.zed/