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feat(chat): add inline model selector to chat composer - #2034
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Adds ModelSelector next to the mode, API config and auto-approve controls, with chat i18n strings for all locales.
The footer now includes the ModelSelector button, so the resting/focus composer snapshots change and the editor needs one more Tab stop to reach.
…ector Re-selecting the active model reset reasoning settings via side effects, and deprecated models were newly selectable. Match ModelPicker behavior. Co-Authored-By: Claude Code <[email protected]>
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📝 Summary
Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation |
|---|---|---|
| Linked Issues check |  |
Issue #1502 requires inline model selection, dynamic and static provider support, search for long lists, graceful fallback, and i18n. ModelSelector is mounted in ChatTextArea. The current code use… |
| Out of Scope Changes check | |
The changes remain connected to issue #1502. The host-side updateProfileModel flow persists inline selections and protects against stale profiles, provider mismatches, invalid keys, and disallowed m… |
| Regression Evidence | |
Focused coverage is present for the changed behavior. ModelSelector.spec.tsx covers display-name rendering and display-name search, static and dynamic providers, loading and empty results, filtering… |
| Security Boundaries | |
The prior Bedrock allowlist bypass is addressed. In ClineProvider.updateProfileModel, the host rejects patch attempts to set awsCustomArn and, when the effective Bedrock model is not custom-arn,… |
| Persistence Integrity | |
No changed persistence path meets the failure condition. persistProviderProfile awaits saveConfig, all activation writes through Promise.allSettled, task-history persistence, and webview state p… |
| Lifecycle Resource Cleanup | |
No changed lifecycle path meets the failure condition. fetchRouterModels removes its abort and message listeners on response, timeout, and abort, and abort clears the timer; an already-aborted signa… |
| Title check | |
The title clearly and concisely describes the main change: adding an inline model selector to the chat composer. |
| Description check | |
The description includes the linked issue, implementation details, test procedure, completed checklist, visual snapshot note, documentation status, additional notes, and contact information. |
Full details: Linked Issues check
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Explanation
Issue
#1502requires inline model selection, dynamic and static provider support, search for long lists, graceful fallback, and i18n.ModelSelectoris mounted inChatTextArea. The current code usesuseRouterModelsandgetStaticModelsForProvider, filters and displays model entries, searches lists above six items, and opens Settings for unsupported providers. The pull request adds chat strings across the supported locales. The reported tests cover selection, loading, filtering, fallback, persistence, message validation, and abort cleanup.
Full details: Out of Scope Changes check
-
Explanation
The changes remain connected to issue
#1502. The host-sideupdateProfileModelflow persists inline selections and protects against stale profiles, provider mismatches, invalid keys, and disallowed models. Router abort handling, translations, tests, and visual updates support the selector feature. No unrelated product change is demonstrated.
Full details: Regression Evidence
-
Explanation
Focused coverage is present for the changed behavior.
ModelSelector.spec.tsxcovers display-name rendering and display-name search, static and dynamic providers, loading and empty results, filtering, Bedrock fields, no-op reselection, and unsupported providers. Host tests cover unset providers, rejected keys and values, allow-list failures, Bedrock ARN invariants, rollback, and timeout ordering. Router abort and timeout cleanup and malformed message handling also have tests. The ChatTextArea Playwright component snapshots and Electron baseline were updated for the visible toolbar change. Prior failure addressed:ModelSelector.spec.tsxnow uses differing display names and verifies both trigger rendering (Alpha Fast) and search byBeta Deep, at lines 174-214.
Full details: Security Boundaries
-
Explanation
The prior Bedrock allowlist bypass is addressed. In
ClineProvider.updateProfileModel, the host rejects patch attempts to setawsCustomArnand, when the effective Bedrock model is notcustom-arn, deletesawsCustomArn,awsCustomArnBaseModelId, andawsModelContextWindowbeforeProfileValidator.isProfileAllowedruns. The saved and activated profile therefore cannot retain an ARN that overrides the allowlisted model. The message handler accepts only a non-array object, while the host allowlists patch keys and validates model IDs as non-empty strings. The added tests cover ARN removal, custom-ARN requirements, rejected ARN injection, and organization allowlist rejection. Prior failure addressed:ClineProvider.updateProfileModelnow removes retained Bedrock ARN fields before allowlist validation for normal models and rejects patches that set ARN fields. Tests cover the stale-ARN bypass scenario.
Full details: Persistence Integrity
-
Explanation
No changed persistence path meets the failure condition.
persistProviderProfileawaitssaveConfig, all activation writes throughPromise.allSettled, task-history persistence, and webview state publication.runToCompletionkeeps timed-out profile mutations running and blocks the next mutation until completion.updateProfileModelrestores the prior profile after activation failure and reports a partial-state error if restoration also fails. The unset-provider default is resolved to Anthropic, persisted in the merged profile, and passed to the active context. Existing non-atomic profile writes do not introduce a new loss path here.
Full details: Lifecycle Resource Cleanup
-
Explanation
No changed lifecycle path meets the failure condition.
fetchRouterModelsremoves its abort and message listeners on response, timeout, and abort, and abort clears the timer; an already-aborted signal exits without registering resources (useRouterModels.ts:19-70). Profile mutations clear their timeout timers, andrunToCompletionkeeps timed-out mutations serialized until settlement instead of starting overlapping work (ClineProvider.ts:283-344). The added tests cover listener removal, abort cleanup, immediate abort, and timeout cleanup.
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Review comments at
@webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsx:
- Line 20: Update the ChatTextArea visual test to call editor.focus() before
capturing the snapshot, ensuring the editor’s focused state is deterministic
rather than dependent on tab order; keep keyboard-navigation assertions in
Vitest.
Review comments at
@webview-ui/src/components/chat/__tests__/ModelSelector.spec.tsx:
- Line 91: Update the assertion in the ModelSelector test to verify that the
trigger displays the selected model’s ID or display name, rather than only
checking that the trigger exists.
- Around line 13-18: Update the ModelSelector tests using the useExtensionState
mock to cover an excluded model, a selected dynamic provider with a
dynamic-model result, and an empty or failed result; assert the rendered model
IDs and the selected configuration field for each relevant case.
Review comments at @webview-ui/src/components/chat/ModelSelector.tsx:
- Line 68: Update useModelListForProvider to return the dynamic provider query’s
loading state alongside its models, and update ModelSelector to show a loading
indicator while that query is pending instead of displaying “No results.”
Preserve the no-results state once loading finishes with no models.
- Around line 263-265: Update the model item rendered in the ModelSelector list
so it is keyboard-selectable: replace the clickable div with a button, or add
equivalent focusability, button semantics, and keyboard handling, while
preserving the handleSelect(modelId) behavior.
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⛔ Files ignored due to path filters (9)
apps/vscode-e2e/src/visual/__screenshots__/electron-chat-dark-sidebar.pngis excluded by!**/*.pngwebview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-dark.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-high-contrast-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-high-contrast.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-focus-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-dark.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-high-contrast-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-high-contrast.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**webview-ui/src/components/chat/__tests__/__screenshots__/chat-composer-resting-light.pngis excluded by!**/*.png,!webview-ui/**/__screenshots__/**
📒 Files selected for processing (22)
webview-ui/src/components/chat/ChatTextArea.tsxwebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsxwebview-ui/src/i18n/locales/ca/chat.jsonwebview-ui/src/i18n/locales/de/chat.jsonwebview-ui/src/i18n/locales/en/chat.jsonwebview-ui/src/i18n/locales/es/chat.jsonwebview-ui/src/i18n/locales/fr/chat.jsonwebview-ui/src/i18n/locales/hi/chat.jsonwebview-ui/src/i18n/locales/id/chat.jsonwebview-ui/src/i18n/locales/it/chat.jsonwebview-ui/src/i18n/locales/ja/chat.jsonwebview-ui/src/i18n/locales/ko/chat.jsonwebview-ui/src/i18n/locales/nl/chat.jsonwebview-ui/src/i18n/locales/pl/chat.jsonwebview-ui/src/i18n/locales/pt-BR/chat.jsonwebview-ui/src/i18n/locales/ru/chat.jsonwebview-ui/src/i18n/locales/tr/chat.jsonwebview-ui/src/i18n/locales/vi/chat.jsonwebview-ui/src/i18n/locales/zh-CN/chat.jsonwebview-ui/src/i18n/locales/zh-TW/chat.json
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🪛 GitHub Check: mutation-diff
webview-ui/src/components/chat/ChatTextArea.tsx
[warning] 1327-1327: Mutation test advisory
webview-ui/src/components/chat/ChatTextArea.tsx:1327: Survived StringLiteral mutant (replacement: ""). See the job summary for the complete list and resolution guidance.
webview-ui/src/components/chat/ModelSelector.tsx
[warning] 68-68: Mutation test advisory
webview-ui/src/components/chat/ModelSelector.tsx:68: Survived LogicalOperator mutant (replacement: routerModelsData?.[provider] && null). See the job summary for the complete list and resolution guidance.
[warning] 63-63: Mutation test advisory
webview-ui/src/components/chat/ModelSelector.tsx:63: NoCoverage ObjectLiteral mutant (replacement: {}). See the job summary for the complete list and resolution guidance.
[warning] 62-62: Mutation test advisory
webview-ui/src/components/chat/ModelSelector.tsx:62: 2 mutation test gaps; example: NoCoverage BlockStatement mutant (replacement: {}). See the job summary for the complete list and resolution guidance.
[warning] 51-51: Mutation test advisory
webview-ui/src/components/chat/ModelSelector.tsx:51: 2 mutation test gaps; example: Survived ConditionalExpression mutant (replacement: false). See the job summary for the complete list and resolution guidance.
[warning] 49-49: Mutation test advisory
webview-ui/src/components/chat/ModelSelector.tsx:49: NoCoverage BooleanLiteral mutant (replacement: true). See the job summary for the complete list and resolution guidance.
[warning] 45-45: Mutation test advisory
webview-ui/src/components/chat/ModelSelector.tsx:45: Survived OptionalChaining mutant (replacement: getProviderModelConfig(provider).field). See the job summary for the complete list and resolution guidance.
[warning] 37-37: Mutation test advisory
webview-ui/src/components/chat/ModelSelector.tsx:37: Survived ArrayDeclaration mutant (replacement: []). See the job summary for the complete list and resolution guidance.
🔇 Additional comments (20)
webview-ui/src/components/chat/ChatTextArea.tsx (1)
30-30: LGTM!Also applies to: 96-96, 1324-1329
webview-ui/src/i18n/locales/ca/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/de/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/en/chat.json (1)
143-143: LGTM!Also applies to: 155-161
webview-ui/src/i18n/locales/es/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/fr/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/hi/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/id/chat.json (1)
146-153: LGTM!webview-ui/src/i18n/locales/it/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/ja/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/ko/chat.json (1)
116-116: LGTM!Also applies to: 138-144
webview-ui/src/i18n/locales/nl/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/pl/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/pt-BR/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/ru/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/tr/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/vi/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/zh-CN/chat.json (1)
116-123: LGTM!webview-ui/src/i18n/locales/zh-TW/chat.json (1)
143-150: LGTM!webview-ui/src/components/chat/ModelSelector.tsx (1)
67-67: 🎯 Functional CorrectnessInspect the Bedrock
custom-arnselection path.
getStaticModelsForProviderincludescustom-arn, but the picker can select it without changingawsCustomArn. Confirm that Bedrock accepts this state. If it requires an ARN, hide the option untilawsCustomArnexists or direct the user to Settings to configure one.
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Persist model changes through a host-side updateProfileModel that merges a patch into the latest stored profile inside the mutation queue, validates the expected provider, patch keys and organization allow-list. Gate router model requests on a real model field, abort them on unmount, show a loading state, make model items keyboard-selectable, and extend test coverage.
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Inline comments:
Review comments at @webview-ui/src/components/chat/ModelSelector.tsx:
- Around line 263-264: Update ModelSelector so the popover closes when disabled
becomes true and handleSelect blocks selection while disabled, preventing
updateProfileModel from being sent. Add a test that opens the popover, changes
disabled to true, and verifies selection is blocked.
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📒 Files selected for processing (28)
packages/types/src/vscode-extension-host.tssrc/core/webview/ClineProvider.tssrc/core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.tssrc/core/webview/__tests__/webviewMessageHandler.spec.tssrc/core/webview/webviewMessageHandler.tswebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsxwebview-ui/src/components/ui/hooks/__tests__/useRouterModels.spec.tswebview-ui/src/components/ui/hooks/useRouterModels.tswebview-ui/src/i18n/locales/ca/chat.jsonwebview-ui/src/i18n/locales/de/chat.jsonwebview-ui/src/i18n/locales/en/chat.jsonwebview-ui/src/i18n/locales/es/chat.jsonwebview-ui/src/i18n/locales/fr/chat.jsonwebview-ui/src/i18n/locales/hi/chat.jsonwebview-ui/src/i18n/locales/id/chat.jsonwebview-ui/src/i18n/locales/it/chat.jsonwebview-ui/src/i18n/locales/ja/chat.jsonwebview-ui/src/i18n/locales/ko/chat.jsonwebview-ui/src/i18n/locales/nl/chat.jsonwebview-ui/src/i18n/locales/pl/chat.jsonwebview-ui/src/i18n/locales/pt-BR/chat.jsonwebview-ui/src/i18n/locales/ru/chat.jsonwebview-ui/src/i18n/locales/tr/chat.jsonwebview-ui/src/i18n/locales/vi/chat.jsonwebview-ui/src/i18n/locales/zh-CN/chat.jsonwebview-ui/src/i18n/locales/zh-TW/chat.json
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src/core/webview/__tests__/webviewMessageHandler.spec.tssrc/core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.tssrc/core/webview/webviewMessageHandler.tssrc/core/webview/ClineProvider.ts
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⚙️ CodeRabbit configuration file
Files:
webview-ui/src/i18n/locales/ko/chat.jsonwebview-ui/src/i18n/locales/vi/chat.jsonwebview-ui/src/i18n/locales/zh-TW/chat.jsonwebview-ui/src/i18n/locales/de/chat.jsonwebview-ui/src/i18n/locales/fr/chat.jsonwebview-ui/src/i18n/locales/nl/chat.jsonwebview-ui/src/i18n/locales/ja/chat.jsonsrc/core/webview/__tests__/webviewMessageHandler.spec.tswebview-ui/src/i18n/locales/es/chat.jsonpackages/types/src/vscode-extension-host.tswebview-ui/src/i18n/locales/tr/chat.jsonwebview-ui/src/i18n/locales/pt-BR/chat.jsonwebview-ui/src/i18n/locales/hi/chat.jsonwebview-ui/src/i18n/locales/ca/chat.jsonwebview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsxwebview-ui/src/i18n/locales/it/chat.jsonwebview-ui/src/i18n/locales/pl/chat.jsonwebview-ui/src/i18n/locales/en/chat.jsonsrc/core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.tswebview-ui/src/i18n/locales/ru/chat.jsonwebview-ui/src/i18n/locales/id/chat.jsonwebview-ui/src/i18n/locales/zh-CN/chat.jsonwebview-ui/src/components/ui/hooks/useRouterModels.tssrc/core/webview/webviewMessageHandler.tswebview-ui/src/components/ui/hooks/__tests__/useRouterModels.spec.tswebview-ui/src/components/chat/ModelSelector.tsxwebview-ui/src/components/chat/__tests__/ModelSelector.spec.tsxsrc/core/webview/ClineProvider.ts
Source excerpt: [ ] If the webview uses the setting, include it in `ExtensionState` in `packages/types/src/vscode-extension-host.ts` and any relevant message types.
📄 CodeRabbit inference engine (AGENTS.md)
Files:
packages/types/src/vscode-extension-host.ts
Source excerpt: Keep behavioral assertions in Vitest.
📄 CodeRabbit inference engine (webview-ui/AGENTS.md)
Files:
webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsx
🪛 GitHub Check: mutation-diff
src/core/webview/ClineProvider.ts
[warning] 203-203: Mutation test advisory
src/core/webview/ClineProvider.ts:203: Survived StringLiteral mutant (replacement: ""). See the job summary for the complete list and resolution guidance.
[warning] 202-202: Mutation test advisory
src/core/webview/ClineProvider.ts:202: Survived StringLiteral mutant (replacement: ""). See the job summary for the complete list and resolution guidance.
[warning] 201-201: Mutation test advisory
src/core/webview/ClineProvider.ts:201: Survived StringLiteral mutant (replacement: ""). See the job summary for the complete list and resolution guidance.
[warning] 200-200: Mutation test advisory
src/core/webview/ClineProvider.ts:200: Survived StringLiteral mutant (replacement: ""). See the job summary for the complete list and resolution guidance.
[warning] 199-199: Mutation test advisory
src/core/webview/ClineProvider.ts:199: Survived StringLiteral mutant (replacement: ""). See the job summary for the complete list and resolution guidance.
[warning] 198-198: Mutation test advisory
src/core/webview/ClineProvider.ts:198: Survived StringLiteral mutant (replacement: ""). See the job summary for the complete list and resolution guidance.
[warning] 196-196: Mutation test advisory
src/core/webview/ClineProvider.ts:196: Survived ArrayDeclaration mutant (replacement: []). See the job summary for the complete list and resolution guidance.
🔇 Additional comments (24)
packages/types/src/vscode-extension-host.ts (1)
472-472: LGTM!src/core/webview/webviewMessageHandler.ts (1)
2339-2352: LGTM!src/core/webview/__tests__/webviewMessageHandler.spec.ts (1)
2371-2411: LGTM!src/core/webview/__tests__/ClineProvider.apiHandlerRebuild.spec.ts (1)
431-520: LGTM!src/core/webview/ClineProvider.ts (1)
1946-1946: 🎯 Functional CorrectnessThe selector already sends the task-effective profile name. When a task exists,
currentApiConfigNameis projected fromcurrentTask.taskApiConfigName, so the sticky-profile scenario does not produce a mismatched name. The proposedactiveNameexpression would be equivalent. No change is needed.webview-ui/src/components/chat/__tests__/ChatTextArea.visual.tsx (1)
17-17: LGTM!webview-ui/src/i18n/locales/ca/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/de/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/en/chat.json (1)
160-161: LGTM!webview-ui/src/i18n/locales/es/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/fr/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/hi/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/id/chat.json (1)
152-153: LGTM!webview-ui/src/i18n/locales/it/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/ja/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/ko/chat.json (1)
143-144: LGTM!webview-ui/src/i18n/locales/nl/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/pl/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/pt-BR/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/ru/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/tr/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/vi/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/zh-CN/chat.json (1)
122-123: LGTM!webview-ui/src/i18n/locales/zh-TW/chat.json (1)
149-150: LGTM!
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…bypass Allow reset keys such as awsCustomArn to be cleared only, so a patch cannot point Bedrock at a model the allow-list never checked. Restore the previous profile when activation fails after saving and report an unrecoverable partial state. Check the abort signal after each async boundary.
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The host cannot set awsCustomArn, so picking custom-arn from the quick selector saved a model id with no ARN. Only show it when already selected.
Only reasoningEffort was verified to clear on null, so dropping another key from PROFILE_MODEL_RESET_ONLY_KEYS would have gone unnoticed.
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A retained awsCustomArn survived a model patch that omitted null, so the ARN resource bypassed the organization allow-list that only checks apiModelId. Drop the ARN fields unless custom-arn stays selected, and reject selecting custom-arn without an existing ARN.
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Nice! Thanks for this addition - will let it soak in pre-release for the week.
Related GitHub Issue
Closes: #1502
Description
Adds an inline
ModelSelectorto the chat input toolbar. Users can switch models from chat. They do not need to open Settings.Key changes:
webview-ui/src/components/chat/ModelSelector.tsx):ChatTextAreanext toModeSelector,ApiConfigSelector, andAutoApproveDropdown.useRouterModels.getStaticModelsForProvider.filterModels).ModelPicker.Fzfsearch when the list has more thanSEARCH_THRESHOLD(6) models.handleModelChangeSideEffects.updateProfileModelmessage with{ expectedProvider, patch }. The host merges the patch into the latest stored profile inside the profile mutation queue. A stale webview snapshot can no longer overwrite newer settings.expectedProvider.nullvalue clears a key.upsertProviderProfile.useRouterModelsruns only for providers with a model field.fetchRouterModelsnow takes the query abort signal. It removes its listener and timer on abort.chat:modelSelector.*andchat:selectModelstrings in all 18 locales.ChatTextAreacomposer and Electron chat baselines. The focus snapshot now callseditor.focus().Test Procedure
ModelSelector.spec.tsx(static and dynamic providers, loading, allow-list, deprecated models, no-op reselect, keyboard buttons),useRouterModels.spec.ts(abort and timeout cleanup),ClineProvider.apiHandlerRebuild.spec.ts(updateProfileModelmerge, provider mismatch, key allow-list, organization allow-list), andwebviewMessageHandler.spec.ts(message validation).pnpm check-typesandturbo lintpass.Pre-Submission Checklist
ChatTextArea.visual.tsx.Documentation Updates
Additional Notes
This PR replaces #2010. That PR also added a host-side flow. It grew large and drew many review findings. This PR keeps the host change small and reuses the existing queue.
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