fix: Remove tabs permission to avoid new warnings cp-13.10.1

[Gudahtt]

Description

The recent addition of the tabs permission will result in new permission warnings upon update, which is extremely disruptive and is something we'd never do except as a last resort.

The permission wasn't actually needed, and has been removed. This removal uncovered a bug in our Webpack build (the tabs permission was erroneously only added for MV2 test builds, but we need it for MV3 test builds as well), which has been fixed.

Changelog

CHANGELOG entry: Remove unnecessary extension permission

Related issues

N/A

Manual testing steps

Test that the sidepanel still works in general. Particularly with dapp confirmations, and the "Connected status" indicator, and current selected dapp.

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

Removes tabs from the MV3 manifest and updates the build transform to add tabs only for test builds (all manifest versions).

• Manifest (MV3):
  • Remove tabs from permissions in app/manifest/v3/_base.json.
• Build/Manifest transform:
  • Update transformManifest in development/webpack/utils/plugins/ManifestPlugin/helpers.ts to add tabs when args.test is true, regardless of manifest_version.
  • Retains error if tabs already exists and continues adding dev/test manifest key.

^{Written by Cursor Bugbot for commit 862591e. This will update automatically on new commits. Configure here.}

[metamaskbot]

Builds ready [862591e]

• 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, 15
  • ui: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
  • content-script: 0
  • offscreen: 0

UI Startup Metrics (1250 ± 102 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	1250	1080	1620	102	1311	1446
			load	1061	897	1374	95	1122	1225
			domContentLoaded	1054	867	1366	95	1115	1214
			domInteractive	25	14	103	20	20	87
			firstPaint	469	96	1251	393	932	1217
			backgroundConnect	220	199	320	17	225	251
			firstReactRender	29	18	75	10	33	48
			getState	34	18	104	14	38	56
			initialActions	1	0	6	1	1	2
			loadScripts	842	666	1137	91	898	999
			setupStore	11	7	26	3	12	18
			numNetworkReqs	12	5	77	20	5	72
	Browserify	Power User Home	uiStartup	1881	1565	2641	234	2049	2340
			load	998	870	1654	149	1003	1373
			domContentLoaded	983	863	1643	147	982	1362
			domInteractive	34	16	222	37	27	150
			firstPaint	598	90	1659	389	931	1282
			backgroundConnect	223	203	262	11	228	243
			firstReactRender	80	47	117	13	86	103
			getState	174	131	302	42	190	273
			initialActions	1	0	5	1	1	2
			loadScripts	777	666	1430	145	775	1145
			setupStore	20	10	78	12	25	40
			numNetworkReqs	122	69	295	49	154	210
	Webpack	Standard Home	uiStartup	815	720	1206	82	846	982
			load	617	559	1052	77	629	757
			domContentLoaded	612	556	1045	76	625	751
			domInteractive	24	13	92	19	20	80
			firstPaint	240	71	1050	187	208	609
			backgroundConnect	11	6	39	7	13	28
			firstReactRender	28	20	69	7	32	36
			getState	29	14	57	10	36	44
			initialActions	1	0	3	1	1	2
			loadScripts	609	554	1035	74	622	742
			setupStore	11	6	34	4	13	18
			numNetworkReqs	12	5	77	20	5	73
	Webpack	Power User Home	uiStartup	1395	1023	2591	239	1531	1913
			load	637	553	1515	134	638	953
			domContentLoaded	627	547	1502	133	622	943
			domInteractive	33	16	252	36	27	121
			firstPaint	290	108	969	205	318	665
			backgroundConnect	14	7	37	6	17	34
			firstReactRender	82	49	162	15	89	102
			getState	162	135	306	33	162	245
			initialActions	1	0	4	0	1	2
			loadScripts	624	546	1494	131	620	934
			setupStore	21	8	56	12	32	48
			numNetworkReqs	144	67	310	54	177	284
Firefox	Browserify	Standard Home	uiStartup	1188	1040	1608	125	1247	1460
			load	1004	896	1251	85	1051	1168
			domContentLoaded	1002	896	1251	85	1051	1168
			domInteractive	58	28	240	42	82	138
			firstPaint	-	-	-	-	-	-
			backgroundConnect	34	20	161	20	37	65
			firstReactRender	20	17	34	3	21	32
			getState	11	5	82	11	9	41
			initialActions	1	0	2	0	1	2
			loadScripts	983	880	1237	82	1027	1143
			setupStore	11	5	170	17	9	22
			numNetworkReqs	11	5	69	15	6	59
	Browserify	Power User Home	uiStartup	2689	1976	3739	366	2849	3550
			load	1164	940	1602	168	1224	1507
			domContentLoaded	1163	933	1601	168	1224	1506
			domInteractive	151	30	568	127	169	496
			firstPaint	-	-	-	-	-	-
			backgroundConnect	226	24	915	236	281	777
			firstReactRender	85	50	129	17	95	119
			getState	294	86	883	268	374	872
			initialActions	2	0	9	2	2	7
			loadScripts	1117	924	1531	159	1161	1482
			setupStore	120	7	857	180	117	743
			numNetworkReqs	97	61	215	41	94	205
	Webpack	Standard Home	uiStartup	1421	1250	1868	115	1474	1677
			load	1218	1062	1455	89	1286	1368
			domContentLoaded	1218	1062	1449	89	1286	1368
			domInteractive	55	27	229	37	78	132
			firstPaint	-	-	-	-	-	-
			backgroundConnect	42	20	137	22	43	95
			firstReactRender	26	21	67	6	27	33
			getState	9	6	33	4	10	16
			initialActions	1	0	3	1	1	2
			loadScripts	1193	1047	1385	83	1264	1339
			setupStore	13	6	167	20	9	56
			numNetworkReqs	12	5	69	17	6	63
	Webpack	Power User Home	uiStartup	2854	2043	3789	370	3108	3501
			load	1390	1115	1801	171	1522	1711
			domContentLoaded	1390	1115	1796	171	1521	1711
			domInteractive	129	30	526	111	147	424
			firstPaint	-	-	-	-	-	-
			backgroundConnect	182	30	766	173	238	587
			firstReactRender	86	38	159	21	97	126
			getState	283	83	1661	327	207	899
			initialActions	3	1	35	5	3	8
			loadScripts	1348	1089	1732	168	1443	1684
			setupStore	86	5	776	140	87	290
			numNetworkReqs	96	53	209	41	98	200

📊 Page Load Benchmark Results

Current Commit: 862591e | Date: 11/20/2025

📄 Localhost MetaMask Test Dapp

Samples: 100

Summary

• pageLoadTime-> current mean value: 1.04s (±43ms) 🟡 | historical mean value: 1.05s ⬇️ (historical data)
• domContentLoaded-> current mean value: 723ms (±35ms) 🟢 | historical mean value: 732ms ⬇️ (historical data)
• firstContentfulPaint-> current mean value: 77ms (±11ms) 🟢 | historical mean value: 78ms ⬇️ (historical data)

📈 Detailed Results

Metric	Mean	Std Dev	Min	Max	P95	P99
pageLoadTime	1.04s	43ms	1.01s	1.31s	1.08s	1.31s
domContentLoaded	723ms	35ms	699ms	982ms	748ms	982ms
firstPaint	77ms	11ms	64ms	164ms	84ms	164ms
firstContentfulPaint	77ms	11ms	64ms	164ms	84ms	164ms
largestContentfulPaint	0ms	0ms	0ms	0ms	0ms	0ms

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

• background: 53 Bytes (0%)
• ui: 0 Bytes (0%)
• common: 20 Bytes (0%)