重构（编辑器）：re editor 库#280

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XiaoBuHaly wants to merge 9 commits intoChevey339:masterfrom

XiaoBuHaly:refactor/re-editor-input

Commits on Mar 25, 2026

refactor(editor): add shared PlainTextCodeEditor and controller helpers
XiaoBuHaly
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fix(markdown): harden preview template and inline media sanitizer
XiaoBuHaly
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refactor(translate): migrate editors and debounce streaming output
XiaoBuHaly
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refactor(model): migrate prompt editors to PlainTextCodeEditor
XiaoBuHaly
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refactor(instruction): migrate prompt editors to PlainTextCodeEditor
XiaoBuHaly
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refactor(chat): migrate message editors to PlainTextCodeEditor
XiaoBuHaly
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refactor(settings): debounce save and migrate SA JSON editor
XiaoBuHaly
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refactor(chat-input)!: switch to CodeLineEditingController
XiaoBuHaly
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fix(editor): address post-rebase review feedback
XiaoBuHaly
committed