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## PR #2 of channel UX redesign (#1034) — QR generation + scanning Self-contained QR module for MeshCore channel sharing. Wirable but **not wired** — PR #3 wires this into the modal placeholders shipped by PR #1. ### What's in - **`public/channel-qr.js`** — new module exporting `window.ChannelQR`: - `buildUrl(name, secretHex)` → `meshcore://channel/add?name=<urlencoded>&secret=<32hex>` - `parseChannelUrl(url)` → `{name, secret}` or `null` (strict: scheme, path, hex32 secret) - `generate(name, secretHex, target)` — renders QR (via vendored qrcode.js) + the URL string + a "Copy Key" button into `target` - `scan()` → `Promise<{name, secret} | null>` — opens a camera overlay, decodes with jsQR, parses, auto-closes on first valid match. Graceful no-camera/permission-denied fallback ("Camera not available — paste key manually"). - **`public/vendor/jsqr.min.js`** — vendored jsQR 1.4.0 - **`public/index.html`** — loads `vendor/jsqr.min.js` + `channel-qr.js` after `channel-decrypt.js` - **`test-channel-qr.js`** + wired into `test-all.sh` — 16 assertions on `buildUrl` / `parseChannelUrl` (DOM/camera paths covered by Playwright in #3) ### TDD - Red commit `d6ba89e` — stub module + failing assertions on `buildUrl` / `parseChannelUrl` (compiles, runs, fails on assertion) - Green commit `25328ac` — real impl, 16/16 pass ### License note Brief specified jsQR as MIT — it's actually **Apache-2.0** (https://github.com/cozmo/jsQR/blob/master/package.json). Apache-2.0 is permissive and compatible with the repo's ISC license; flagging here so reviewers can confirm. Cited in the file header. ### Independence guarantees - Does **not** touch `channels.js` or `channel-decrypt.js` - Does not call any UI from `channels.js`; PR #3 will call `ChannelQR.generate(...)` into `#qr-output` and wire `#scan-qr-btn` to `ChannelQR.scan()` Refs #1034 --------- Co-authored-by: openclaw-bot <bot@openclaw.local>