refactor(common-config): extract snippet from editor content instead of active provider

- Change extraction source from current active provider to editor's live content
- Add i18n support for JSON parse error messages via invalid_json_format_error()
- Simplify API by removing unused providerId parameter
- Update button labels and error messages in zh/en/ja locales

src/i18n/locales/en.json

@@ -54,8 +54,8 @@
     "editCommonConfigTitle": "Edit Common Config Snippet",
     "commonConfigHint": "This snippet will be merged into settings.json when 'Write Common Config' is checked",
     "fullSettingsHint": "Full Claude Code settings.json content",
-    "extractFromCurrent": "Extract from Current Provider",
-    "extractNoCommonConfig": "No common config available to extract from current provider",
+    "extractFromCurrent": "Extract from Editor",
+    "extractNoCommonConfig": "No common config available to extract from editor",
     "extractFailed": "Extract failed: {{error}}",
     "saveFailed": "Save failed: {{error}}"
   },
@@ -398,8 +398,8 @@
     "editCommonConfigTitle": "Edit Codex Common Config Snippet",
     "commonConfigHint": "This snippet will be appended to the end of config.toml when 'Write Common Config' is checked",
     "apiUrlLabel": "API Request URL",
-    "extractFromCurrent": "Extract from Current Provider",
-    "extractNoCommonConfig": "No common config available to extract from current provider",
+    "extractFromCurrent": "Extract from Editor",
+    "extractNoCommonConfig": "No common config available to extract from editor",
     "extractFailed": "Extract failed: {{error}}",
     "saveFailed": "Save failed: {{error}}"
   },
@@ -412,8 +412,8 @@
     "editCommonConfig": "Edit Common Config",
     "editCommonConfigTitle": "Edit Gemini Common Config Snippet",
     "commonConfigHint": "This snippet writes to Gemini .env (GOOGLE_GEMINI_BASE_URL and GEMINI_API_KEY are not allowed)",
-    "extractFromCurrent": "Extract from Current Provider",
-    "extractNoCommonConfig": "No common config available to extract from current provider",
+    "extractFromCurrent": "Extract from Editor",
+    "extractNoCommonConfig": "No common config available to extract from editor",
     "extractFailed": "Extract failed: {{error}}",
     "saveFailed": "Save failed: {{error}}",
     "extractedConfigInvalid": "Extracted config format is invalid",

src/i18n/locales/ja.json

@@ -54,8 +54,8 @@
     "editCommonConfigTitle": "共通設定スニペットを編集",
     "commonConfigHint": "「共通設定を書き込む」がオンのとき settings.json にマージされます",
     "fullSettingsHint": "Claude Code の settings.json 全文",
-    "extractFromCurrent": "現在のプロバイダーから抽出",
-    "extractNoCommonConfig": "現在のプロバイダーから抽出できる共通設定がありません",
+    "extractFromCurrent": "編集内容から抽出",
+    "extractNoCommonConfig": "編集内容から抽出できる共通設定がありません",
     "extractFailed": "抽出に失敗しました: {{error}}",
     "saveFailed": "保存に失敗しました: {{error}}"
   },
@@ -398,8 +398,8 @@
     "editCommonConfigTitle": "Codex 共通設定スニペットを編集",
     "commonConfigHint": "「共通設定を書き込む」がオンの場合、config.toml の末尾に追記されます",
     "apiUrlLabel": "API リクエスト URL",
-    "extractFromCurrent": "現在のプロバイダーから抽出",
-    "extractNoCommonConfig": "現在のプロバイダーから抽出できる共通設定がありません",
+    "extractFromCurrent": "編集内容から抽出",
+    "extractNoCommonConfig": "編集内容から抽出できる共通設定がありません",
     "extractFailed": "抽出に失敗しました: {{error}}",
     "saveFailed": "保存に失敗しました: {{error}}"
   },
@@ -412,8 +412,8 @@
     "editCommonConfig": "共通設定を編集",
     "editCommonConfigTitle": "Gemini 共通設定スニペットを編集",
     "commonConfigHint": "このスニペットは Gemini の .env に書き込みます（GOOGLE_GEMINI_BASE_URL、GEMINI_API_KEY は使用できません）",
-    "extractFromCurrent": "現在のプロバイダーから抽出",
-    "extractNoCommonConfig": "現在のプロバイダーから抽出できる共通設定がありません",
+    "extractFromCurrent": "編集内容から抽出",
+    "extractNoCommonConfig": "編集内容から抽出できる共通設定がありません",
     "extractFailed": "抽出に失敗しました: {{error}}",
     "saveFailed": "保存に失敗しました: {{error}}",
     "extractedConfigInvalid": "抽出した設定のフォーマットが不正です",

src/i18n/locales/zh.json

@@ -54,8 +54,8 @@
     "editCommonConfigTitle": "编辑通用配置片段",
     "commonConfigHint": "该片段会在勾选\"写入通用配置\"时合并到 settings.json 中",
     "fullSettingsHint": "完整的 Claude Code settings.json 配置内容",
-    "extractFromCurrent": "从当前供应商提取",
-    "extractNoCommonConfig": "当前供应商没有可提取的通用配置",
+    "extractFromCurrent": "从编辑内容提取",
+    "extractNoCommonConfig": "当前编辑内容没有可提取的通用配置",
     "extractFailed": "提取失败: {{error}}",
     "saveFailed": "保存失败: {{error}}"
   },
@@ -398,8 +398,8 @@
     "editCommonConfigTitle": "编辑 Codex 通用配置片段",
     "commonConfigHint": "该片段会在勾选'写入通用配置'时追加到 config.toml 末尾",
     "apiUrlLabel": "API 请求地址",
-    "extractFromCurrent": "从当前供应商提取",
-    "extractNoCommonConfig": "当前供应商没有可提取的通用配置",
+    "extractFromCurrent": "从编辑内容提取",
+    "extractNoCommonConfig": "当前编辑内容没有可提取的通用配置",
     "extractFailed": "提取失败: {{error}}",
     "saveFailed": "保存失败: {{error}}"
   },
@@ -412,8 +412,8 @@
     "editCommonConfig": "编辑通用配置",
     "editCommonConfigTitle": "编辑 Gemini 通用配置片段",
     "commonConfigHint": "该片段会写入 Gemini 的 .env（不允许包含 GOOGLE_GEMINI_BASE_URL、GEMINI_API_KEY）",
-    "extractFromCurrent": "从当前供应商提取",
-    "extractNoCommonConfig": "当前供应商没有可提取的通用配置",
+    "extractFromCurrent": "从编辑内容提取",
+    "extractNoCommonConfig": "当前编辑内容没有可提取的通用配置",
     "extractFailed": "提取失败: {{error}}",
     "saveFailed": "保存失败: {{error}}",
     "extractedConfigInvalid": "提取的配置格式错误",