docs(16-01): complete WASM build verification plan (browser check deferred)

Author: FlightCore Dev

.planning/phases/16-web-verification-polish/16-01-SUMMARY.md

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+# Plan 16-01 Summary: Build and Verify WASM Bundling
+
+**Status:** Complete (human browser verification deferred)
+**Completed:** 2026-02-21
+
+## What Was Built
+
+Production build verified with WASM bundling working correctly.
+
+## Deliverables
+
+- `viewer/dist/assets/cypcb_render_bg-DvwyMUUN.wasm` — 264KB WASM binary (above 200KB minimum ✓)
+- `viewer/dist/assets/cypcb_render-Bqi5mnf0.js` — WASM wrapper with correct `/assets/` import path ✓
+- `viewer/dist/assets/vendor-B7EnPPzB.js` — vendor bundle with dynamic import of WASM wrapper ✓
+
+## Verification Results
+
+- `npm run build:web` completed successfully ✓
+- WASM binary bundled at correct size (264KB, optimized via wasm-opt during wasm-pack) ✓
+- Import paths correctly rewritten to `/assets/cypcb_render_bg-DvwyMUUN.wasm` ✓
+- Vendor chunk uses dynamic import for WASM module ✓
+- Browser verification (console log, render, load time) — **deferred to later session**
+
+## Notes
+
+Human checkpoint verification (browser console check + load time measurement) was skipped at user request. Build artifacts confirm WASM bundling is structurally correct. Browser verification to confirm "WASM module loaded successfully" and <3s load time on Slow 3G can be done separately.
+
+## Requirements Impact
+
+- WEB-01 (load time <3s): Build ready, browser verification pending
+- WEB-09 (CDN deployment readiness): Build artifacts confirmed correct