docs(product): commit design references under docs/product/reference/

Copy the founder's design handoff bundle (.proto/design/) into
docs/product/reference/ byte-for-byte so dispatch agents running in git
worktrees can read the HTML prototypes, veect-codebase/ prototype,
upload PNGs, and remaining bundle files (ADR-029: reference only, never
vendored into packages/). Ignore-list entries so whole-codebase auditors
and formatters skip reference material: .prettierignore (byte
preservation through lint-staged), .fallowrc.json ignorePatterns, root
ESLint ignores, and the coverage:diff allowlist in
scripts/coverage/diff.mjs (+ unit test). .DS_Store files skipped.

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

docs/product/reference/README.md

@@ -0,0 +1,22 @@
+# CODING AGENTS: READ THIS FIRST
+
+This is a **handoff bundle** from Claude Design (claude.ai/design).
+
+A user mocked up designs in HTML/CSS/JS using an AI design tool, then exported this bundle so a coding agent can implement the designs for real.
+
+## What you should do — IMPORTANT
+
+**Read `app-prototype-development/project/Veect.dc.html` in full.** The user had this file open when they triggered the handoff, so it's almost certainly the primary design they want built. Read it top to bottom — don't skim. Then **follow its imports**: open every file it pulls in (shared components, CSS, scripts) so you understand how the pieces fit together before you start implementing.
+
+**If anything is ambiguous, ask the user to confirm before you start implementing.** It's much cheaper to clarify scope up front than to build the wrong thing.
+
+## About the design files
+
+The design medium is **HTML/CSS/JS** — these are prototypes, not production code. Your job is to **recreate them pixel-perfectly** in whatever technology makes sense for the target codebase (React, Vue, native, whatever fits). Match the visual output; don't copy the prototype's internal structure unless it happens to fit.
+
+**Don't render these files in a browser or take screenshots unless the user asks you to.** Everything you need — dimensions, colors, layout rules — is spelled out in the source. Read the HTML and CSS directly; a screenshot won't tell you anything they don't.
+
+## Bundle contents
+
+- `app-prototype-development/README.md` — this file
+- `app-prototype-development/project/` — the `App prototype development` project files (HTML prototypes, assets, components)