feat: Implement BTC labels in send flow

[OGPoyraz]

Description

This PR aims to add BTC labels to the send flow asset and accounts.

Changelog

CHANGELOG entry: null

Related issues

Fixes: https://github.com/MetaMask/MetaMask-planning/issues/5965

Manual testing steps

1. Have btc in your account
2. Click send from wallet view
3. See BTC asset have type - select it
4. Click recipient selection modal
5. See BTC type next to recipient address

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I've followed MetaMask Contributor Docs and MetaMask Extension Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

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Note

Adds Bitcoin account type labels (Legacy, Nested SegWit, Native SegWit, Taproot) to asset and recipient UI, with supporting types, hooks, and tests.

• UI:
  • Account type labels: Display BTC account type next to token name in UI/asset/asset.tsx and next to address in UI/recipient/recipient.tsx via AccountTypeLabel.
  • New component: UI/account-type-label/account-type-label.tsx with tests.
• Constants:
  • constants/network.ts: accountTypeLabel map for KeyringAccountType (BTC variants).
• Types/Data:
  • types/send.ts: Asset now includes accountType.
  • hooks/send/useRecipients.ts: Recipient now includes accountType.
  • hooks/send/useAccountRecipients.ts: passes through account.type to recipients.
• Tests:
  • Add/expand tests in asset.test.tsx, recipient.test.tsx, useAccountRecipients.test.ts for label rendering and BTC account types.

^{Written by Cursor Bugbot for commit d09e2de. This will update automatically on new commits. Configure here.}

[metamaskbot]

✨ Files requiring CODEOWNER review ✨

✅ @MetaMask/confirmations (12 files, +130 -8)

• 📁 ui/
  • 📁 pages/
    • 📁 confirmations/
      • 📁 components/
        • 📁 UI/
          • 📁 account-type-label/
            • 📄 account-type-label.test.tsx +19 -0
            • 📄 account-type-label.tsx +11 -0
            • 📄 index.ts +1 -0
          • 📁 asset/
            • 📄 asset.test.tsx +11 -0
            • 📄 asset.tsx +19 -3
          • 📁 recipient/
            • 📄 recipient.test.tsx +16 -0
            • 📄 recipient.tsx +19 -5
      • 📁 constants/
        • 📄 network.ts +10 -0
      • 📁 hooks/
        • 📁 send/
          • 📄 useAccountRecipients.test.ts +19 -0
          • 📄 useAccountRecipients.ts +1 -0
          • 📄 useRecipients.ts +2 -0
      • 📁 types/
        • 📄 send.ts +2 -0

[metamaskbot]

📊 Page Load Benchmark Results

Current Commit: d09e2de | Date: 10/10/2025

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 1.06s (±72ms) 🟡 | historical mean value: 1.05s ⬆️ (historical data)
• domContentLoaded-> current mean value: 742ms (±69ms) 🟢 | historical mean value: 734ms ⬆️ (historical data)
• firstContentfulPaint-> current mean value: 78ms (±11ms) 🟢 | historical mean value: 80ms ⬇️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.06s	72ms	1.02s	1.34s	1.28s	1.34s
domContentLoaded	742ms	69ms	707ms	1.02s	951ms	1.02s
firstPaint	78ms	11ms	60ms	172ms	88ms	172ms
firstContentfulPaint	78ms	11ms	60ms	172ms	88ms	172ms
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

---

Results generated automatically by MetaMask CI

[metamaskbot]

Builds ready [d09e2de]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• build viz: Build System
• bundle size: Bundle Size Stats
• user-actions-benchmark: User Actions Stats
• storybook: Storybook
• typescript migration: Dashboard
• all artifacts
• bundle viz:

  • background: 0, 1, 2, 3, 4, 5, 6, 7, 8
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
  • content-script: 0
  • offscreen: 0

UI Startup Metrics (1236 ± 72 ms)

Platform	BuildType	Page	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P 75 (ms)	P 95 (ms)
Chrome	Browserify	Home	uiStartup	1236	1091	1478	72	1281	1343
			load	1067	949	1300	66	1103	1189
			domContentLoaded	1061	920	1282	67	1098	1179
			domInteractive	18	14	47	7	16	41
			firstPaint	728	76	1323	431	1087	1188
			backgroundConnect	252	236	382	15	257	266
			firstReactRender	25	16	55	7	27	40
			getState	12	4	41	7	13	26
			initialActions	5	0	50	7	5	19
			loadScripts	815	671	1024	64	847	937
			setupStore	9	5	18	3	10	14
	Webpack	Home	uiStartup	804	696	1051	61	826	944
			load	619	575	900	58	626	772
			domContentLoaded	611	570	890	58	620	765
			domInteractive	15	11	55	8	13	33
			firstPaint	207	54	893	215	196	769
			backgroundConnect	21	12	40	6	25	37
			firstReactRender	26	16	54	8	31	39
			getState	8	3	19	3	9	11
			initialActions	2	0	8	2	3	5
			loadScripts	608	568	879	55	618	754
			setupStore	8	4	15	2	9	11
Firefox	Browserify	Home	uiStartup	1423	1244	2174	132	1476	1618
			load	1217	1068	1535	91	1283	1366
			domContentLoaded	1217	1068	1535	91	1281	1366
			domInteractive	102	33	483	65	104	254
			firstPaint	NaN	NaN	NaN	NaN	NaN	NaN
			backgroundConnect	28	19	91	10	33	45
			firstReactRender	29	25	59	5	31	34
			getState	8	2	135	18	5	34
			initialActions	3	0	72	9	2	10
			loadScripts	1196	1053	1511	89	1256	1346
			setupStore	11	3	138	19	6	57
	Webpack	Home	uiStartup	1532	1329	2014	121	1572	1796
			load	1330	1184	1577	81	1374	1487
			domContentLoaded	1329	1184	1577	81	1374	1487
			domInteractive	98	30	369	63	100	320
			firstPaint	NaN	NaN	NaN	NaN	NaN	NaN
			backgroundConnect	31	18	94	15	34	71
			firstReactRender	35	25	83	12	35	73
			getState	7	2	104	12	5	37
			initialActions	4	0	55	8	2	23
			loadScripts	1306	1169	1514	77	1351	1464
			setupStore	11	4	59	14	7	46

Bundle size diffs [🚨 Warning! Bundle size has increased!]

• background: 1.17 KiB (0.03%)
• ui: 2.15 KiB (0.03%)
• common: 10 Bytes (0%)