Revert premature channel skill service suggestions

[AbigailDeng]

Remove the Skill service recommendation panel introduced by #3679 from both Channel Bind and Edit. The frontend reached production before backend #3683 was merged/deployed, so selecting a Skill displayed a recommendation failure. This is the user-requested partial revert of merge commit 9842ab8.

The Suggested for panel, Refresh suggestions button, discovery failure copy, Manage connections in NyxID link and /api/skills/service-recommendations requests are removed, together with their unused adapter, query key, styles and translations. Preserve active account service selection (including services omitted at login), required built-in services, explicit Bind/Save and observed completion. The backend PR remains separate. Documentation records the withdrawal and requires explicit approval plus deployed backend verification before any future reintroduction.

Local verification

Passed: 8 related suites / 44 tests; Biome for all 8 remaining changed source/test files; test stability guards and diff whitespace checks.

Dependency discovery selected seven route suites. Run the six Channel suites; the broad vNext index suite also covers unrelated workflow/settings behavior, which is delegated to CI. Also run the directly affected locale catalog and the service inventory adapter tests. Existing Bind and Edit scenarios now assert that selected Skills render no recommendation panel/link/action and make no recommendation request.

python3 /Users/abigaildeng/.codex/skills/frontend-incremental-pr/scripts/frontend_change_scope.py --repo . --base origin/feat/2026-08-04_workflow-activity-vnext
pnpm --dir apps/aevatar-console-web exec jest --listTests --runInBand --findRelatedTests src/pages/workflow-activity-vnext/channels/ChannelConfigurationPage.tsx src/pages/workflow-activity-vnext/channels/ChannelServicePicker.tsx src/pages/workflow-activity-vnext/channels/queries.ts src/pages/workflow-activity-vnext/channels/connectionStyles.ts
pnpm --dir apps/aevatar-console-web exec jest --runInBand --runTestsByPath src/pages/workflow-activity-vnext/channels/ChannelEditPage.test.tsx src/pages/workflow-activity-vnext/channels/ChannelDefaultSkill.test.tsx src/pages/workflow-activity-vnext/channels/ChannelsPage.test.tsx src/pages/workflow-activity-vnext/channels/ChannelServiceAccess.test.tsx src/pages/workflow-activity-vnext/channels/ChannelAuthorizedServices.test.tsx src/pages/workflow-activity-vnext/channels/ChannelBindServiceAccess.test.tsx src/shared/api/channelServicesApi.test.ts src/locales/catalog.test.ts
pnpm --dir apps/aevatar-console-web exec biome check src/locales/channelMessages.en-US.ts src/locales/channelMessages.zh-CN.ts src/pages/workflow-activity-vnext/channels/ChannelConfigurationPage.tsx src/pages/workflow-activity-vnext/channels/ChannelDefaultSkill.test.tsx src/pages/workflow-activity-vnext/channels/ChannelEditPage.test.tsx src/pages/workflow-activity-vnext/channels/ChannelServicePicker.tsx src/pages/workflow-activity-vnext/channels/connectionStyles.ts src/pages/workflow-activity-vnext/channels/queries.ts
env PATH="/opt/homebrew/opt/python@3.12/libexec/bin:$PATH" bash tools/ci/test_stability_guards.sh
git diff --check

Full frontend suite, typecheck and production build are delegated to GitHub CI by personal local workflow policy. No reliable repository-native affected typecheck is available.

Design baseline

• Baseline: apps/aevatar-console-web/docs/design-baselines/workflow-activity-vnext/
• Primary: aevatar-workflow-activity-vnext.excalidraw
• SHA-256: 30e74d7b410ae72c4c91432355436679033679c54c10b1702908435b001577de
• Contract: apps/aevatar-console-web/docs/superpowers/specs/2026-08-04-workflow-activity-vnext-design.md
• User paths: apps/aevatar-console-web/docs/superpowers/specs/2026-08-04-workflow-activity-vnext-user-paths.md
• Keep the existing compact Channels form and tokens; remove the withdrawn panel. Real APIs and acknowledged user actions remain the only production data sources; mocks remain test-only. Auth, identity and localization use the existing shared implementation.