[iuyo5678]

Keep an unpaired connection usable and show Connected / Unpaired with a nonblocking identity warning. Add an optional Pair action and a circled warning icon linking to the existing official security overview at https://browserskill.weixin.qq.com/#security. Successful pairing displays Verified.

The warning does not expand settings, disable the connection, or display a confirmation dialog. Pairing verification uses a separate connection, retaining the working connection on rejection. The UI and new guidance are translated in all ten locales; explicit skipping and replacement retain their existing confirmation flows.

Validation across the final stack:

• Rust workspace: 1,020 passed, one existing ignored; formatting and strict Clippy.
• Extension: 3,570 passed, 363 environment-dependent skips; TypeScript, Biome and production build.
• Five real-daemon tests using the current CLI and published 0.4.1; real Chrome for Testing pairing/navigation smoke.
• The 0.4.2 stage independently passed 131 focused tests, three real-daemon tests, typecheck and Biome.

Stack 6/9; base: #428. Review order: #424 → #425 → #426 → #427 → #428 → #429 → #430 → #431 → #432.