[AnishSarkar22]

What

• Removes the Agentic warning that showed under a new chat's composer ("Not tested with this model yet, so it may stop early or make mistakes."). The same warning already shows in the mode menu, and Settings › Models shows the full detail.
• The capability tag in the model picker ("Agentic", "Not tested", …) now shows only in dev builds, as a small badge. Production shows only the model name and its connection.
• New-chat mode menu: each mode has one short line ("Answers from your sources", "Does tasks across your files"). An Agentic that hasn't passed the tests gets a tag ("Not tested", "Low score", "May need nudges", "Local copy", "Expected to pass").
• The full reason, or why Agentic is blocked, shows in a tooltip beside the row on hover or keyboard focus, the same pattern as the "+" menu. Screen readers read it with the row.
• Open-chat mode menu: shows the same two rows under "This chat’s mode", with the chat's mode checked and the other marked "New chat". Picking the other mode opens a new chat in it; picking the current one does nothing.
• Interface text: adds the new messages in all ten languages and removes the four that are no longer used.
• Updates docs/architecture/model-capabilities.md to match.
• Tests: mode-picker tests cover the tag, the tooltip, a passing model with no tag, and the open-chat menu (pick the other mode, pick the current one, blocked Agentic).
• To test: run pnpm dev, start a new chat with an untested model, open the mode menu, and hover Agentic. Then open an existing chat and use the mode menu to start a chat in the other mode. A production build should show no tags in the model picker.

Why

Fixes #

How to test

High-level PR Summary

This PR refines the user interface for the chat composer's mode picker by moving Agentic capability warnings into tooltips with tags, removing the note under the composer, hiding capability labels in production builds, and unifying the mode picker behavior between new and open chats to use consistent radio button lists.

⏱️ Estimated Review Time: 5-15 minutes

💡 Review Order Suggestion

Order	File Path
1	docs/architecture/model-capabilities.md
2	surfsense_local/frontend/src/features/chat/modes/mode-text.ts
3	surfsense_local/frontend/src/features/chat/modes/agentic-note.tsx
4	surfsense_local/frontend/src/features/chat/model-picker.tsx
5	surfsense_local/frontend/src/features/chat/modes/mode-picker.tsx
6	surfsense_local/frontend/src/features/chat/chat-composer.tsx
7	surfsense_local/frontend/src/features/chat/modes/mode-picker.test.tsx
8	surfsense_local/frontend/translations/en.json
9	surfsense_local/frontend/translations/de.json
10	surfsense_local/frontend/translations/es.json
11	surfsense_local/frontend/translations/fr.json
12	surfsense_local/frontend/translations/hi.json
13	surfsense_local/frontend/translations/ja.json
14	surfsense_local/frontend/translations/ko.json
15	surfsense_local/frontend/translations/pt-BR.json
16	surfsense_local/frontend/translations/ru.json
17	surfsense_local/frontend/translations/zh-CN.json

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Note

Currently processing new changes in this PR. This may take a few minutes, please wait...

⚙️ Run configuration

• Configuration used: Repository: MODSetter/SurfSense/.coderabbit.yaml
• Review profile: CHILL
• Plan: Advanced
• Run ID: 59dd8730-d76e-402d-b2df-e9f0f942e6ea

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📥 Commits

Reviewing files that changed from the base of the PR and between c5ff793 and d402901.

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📒 Files selected for processing (17)

• docs/architecture/model-capabilities.md
• surfsense_local/frontend/src/features/chat/chat-composer.tsx
• surfsense_local/frontend/src/features/chat/model-picker.tsx
• surfsense_local/frontend/src/features/chat/modes/agentic-note.tsx
• surfsense_local/frontend/src/features/chat/modes/mode-picker.test.tsx
• surfsense_local/frontend/src/features/chat/modes/mode-picker.tsx
• surfsense_local/frontend/src/features/chat/modes/mode-text.ts
• surfsense_local/frontend/translations/de.json
• surfsense_local/frontend/translations/en.json
• surfsense_local/frontend/translations/es.json
• surfsense_local/frontend/translations/fr.json
• surfsense_local/frontend/translations/hi.json
• surfsense_local/frontend/translations/ja.json
• surfsense_local/frontend/translations/ko.json
• surfsense_local/frontend/translations/pt-BR.json
• surfsense_local/frontend/translations/ru.json
• surfsense_local/frontend/translations/zh-CN.json

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