chore: update rewards metametrics

[sophieqgu]

Description

https://consensyssoftware.atlassian.net/browse/RWDS-268
Part 2 of #36827 pertaining to metametrics changes

Changelog

CHANGELOG entry: null

Related issues

Fixes:

Manual testing steps

1. Go to this page...

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.

---

Note

Expose a MetaMetrics traits update API and add rewards-specific traits, events, and category constants.

• MetaMetrics:
  • Expose updateMetaMetricsTraits via getApi() in app/scripts/metamask-controller.js (binds to metaMetricsController.updateTraits).
  • Extend rewards-related tracking in shared/constants/metametrics.ts:
    • Add user traits: has_rewards_opted_in, rewards_referred, rewards_referral_code_used and corresponding MetaMetricsUserTrait enums.
    • Add event names for rewards flows: REWARDS_OPT_IN_* and REWARDS_ACCOUNT_LINKING_*.
    • Add Rewards to MetaMetricsEventCategory.

^{Written by Cursor Bugbot for commit 9773647. This will update automatically on new commits. Configure here.}

[github-actions]

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[metamaskbot]

Builds ready [9773647]

• builds: chrome, firefox
• builds (beta): chrome, firefox
• builds (flask): chrome, firefox
• builds (test): chrome, firefox
• builds (test-flask): chrome, firefox
• 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, 9
  • common: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
  • content-script: 0
  • offscreen: 0

UI Startup Metrics (1224 ± 84 ms)

Platform	BuildType	Page	Metric	Mean (ms)	Min (ms)	Max (ms)	Std Dev (ms)	P 75 (ms)	P 95 (ms)
Chrome	Browserify	Standard Home	uiStartup	1224	1072	1487	84	1280	1349
			load	1061	933	1261	77	1116	1188
			domContentLoaded	1055	929	1258	75	1110	1175
			domInteractive	22	15	85	16	18	70
			firstPaint	606	91	1222	417	1070	1162
			backgroundConnect	232	218	264	8	235	248
			firstReactRender	29	20	54	7	31	44
			getState	20	7	43	8	26	36
			initialActions	1	0	4	1	1	3
			loadScripts	829	673	1024	75	884	946
			setupStore	11	7	25	4	11	20
			numNetworkReqs	13	6	75	19	6	71
	Browserify	Power User Home	uiStartup	2208	1889	2641	224	2390	2641
			load	1148	1012	1531	176	1336	1531
			domContentLoaded	1128	991	1522	179	1324	1522
			domInteractive	59	21	207	56	118	207
			firstPaint	645	207	1542	495	1164	1542
			backgroundConnect	253	232	282	13	257	282
			firstReactRender	74	47	103	17	88	103
			getState	245	184	396	60	283	396
			initialActions	1	0	3	1	2	3
			loadScripts	897	761	1286	174	1087	1286
			setupStore	28	14	71	12	32	71
			numNetworkReqs	125	91	198	34	158	198
	Webpack	Standard Home	uiStartup	866	725	1212	102	873	1181
			load	629	570	964	78	627	854
			domContentLoaded	621	565	943	76	618	841
			domInteractive	19	12	107	17	15	65
			firstPaint	236	60	944	234	212	784
			backgroundConnect	25	10	66	12	28	57
			firstReactRender	35	20	275	26	38	57
			getState	11	7	34	3	12	16
			initialActions	1	0	1	0	1	1
			loadScripts	618	563	932	74	616	831
			setupStore	12	6	33	4	14	18
			numNetworkReqs	13	6	75	19	6	70
	Webpack	Power User Home	uiStartup	1097	905	1693	272	1436	1693
			load	678	576	1004	157	792	1004
			domContentLoaded	661	566	966	146	773	966
			domInteractive	32	13	90	32	81	90
			firstPaint	388	98	945	295	600	945
			backgroundConnect	61	17	194	61	108	194
			firstReactRender	40	37	44	2	40	44
			getState	135	74	161	24	149	161
			initialActions	1	0	1	0	1	1
			loadScripts	656	564	953	142	762	953
			setupStore	14	6	102	23	9	102
			numNetworkReqs	83	64	130	25	119	130
Firefox	Browserify	Standard Home	uiStartup	1517	1338	2254	133	1559	1795
			load	1270	1150	1521	82	1312	1458
			domContentLoaded	1270	1150	1520	82	1312	1458
			domInteractive	54	34	254	39	46	154
			firstPaint	-	-	-	-	-	-
			backgroundConnect	43	24	176	20	49	68
			firstReactRender	28	23	53	5	29	42
			getState	12	7	39	5	12	21
			initialActions	2	0	4	1	2	3
			loadScripts	1244	1135	1458	77	1283	1424
			setupStore	18	8	230	30	14	53
			numNetworkReqs	12	6	67	16	8	59
	Browserify	Power User Home	uiStartup	3292	2513	4509	642	4113	4509
			load	1474	1233	1789	187	1710	1789
			domContentLoaded	1474	1233	1789	187	1710	1789
			domInteractive	225	64	540	156	388	540
			firstPaint	-	-	-	-	-	-
			backgroundConnect	575	80	1331	385	926	1331
			firstReactRender	89	61	122	16	97	122
			getState	148	93	275	44	183	275
			initialActions	3	1	7	1	3	7
			loadScripts	1430	1207	1741	182	1617	1741
			setupStore	91	32	183	41	130	183
			numNetworkReqs	126	78	238	62	226	238
	Webpack	Standard Home	uiStartup	1656	1475	2144	137	1691	2016
			load	1397	1243	1716	105	1443	1644
			domContentLoaded	1397	1241	1715	105	1443	1643
			domInteractive	54	30	154	26	62	116
			firstPaint	-	-	-	-	-	-
			backgroundConnect	52	24	132	24	58	111
			firstReactRender	34	25	88	10	37	45
			getState	14	7	58	11	12	51
			initialActions	2	0	3	1	2	3
			loadScripts	1364	1216	1626	98	1413	1599
			setupStore	18	7	152	23	13	71
			numNetworkReqs	13	6	69	17	7	66
	Webpack	Power User Home	uiStartup	3181	2563	4242	514	3587	4242
			load	1634	1408	2026	179	1811	2026
			domContentLoaded	1634	1408	2026	179	1811	2026
			domInteractive	208	60	625	171	364	625
			firstPaint	-	-	-	-	-	-
			backgroundConnect	463	143	904	272	830	904
			firstReactRender	95	66	128	17	110	128
			getState	157	104	299	46	162	299
			initialActions	2	1	7	1	3	7
			loadScripts	1589	1354	1999	184	1787	1999
			setupStore	101	33	408	86	116	408
			numNetworkReqs	127	78	220	45	183	220

📊 Page Load Benchmark Results

Current Commit: 9773647 | Date: 11/14/2025

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 1.03s (±49ms) 🟡 | historical mean value: 1.03s ⬇️ (historical data)
• domContentLoaded-> current mean value: 720ms (±66ms) 🟢 | historical mean value: 718ms ⬆️ (historical data)
• firstContentfulPaint-> current mean value: 89ms (±126ms) 🟢 | historical mean value: 77ms ⬆️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.03s	49ms	1.00s	1.32s	1.05s	1.32s
domContentLoaded	720ms	66ms	693ms	1.25s	737ms	1.25s
firstPaint	89ms	126ms	56ms	1.32s	84ms	1.32s
firstContentfulPaint	89ms	126ms	56ms	1.32s	84ms	1.32s
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

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

• background: 105 Bytes (0%)
• ui: 0 Bytes (0%)
• common: 515 Bytes (0.01%)