接入 Gemini 同款本地字体并写入 fonts 目录

- 新增 fonts/Inter-Variable.ttf 与 fonts/JetBrainsMono-Regular.ttf 本地字体文件\n- 调整 message_summary 本地字体注入逻辑，优先注册 Inter 与 JetBrains Mono\n- 保留 simhei/simsun 作为中文回退字体，避免中文缺字\n- 更新字体变量栈，正文与代码字体与 Gemini 模板设计对齐

plugins/message_summary/main.py

@@ -546,10 +546,51 @@ class MessageSummaryPlugin(MessagePluginInterface):
             project_root = Path(__file__).resolve().parents[2]
             font_dir = project_root / "fonts"
 
+            # 说明：
+            # 1. 与 Gemini 参考模板保持一致，优先使用 Inter + JetBrains Mono；
+            # 2. 同时保留中文字体作为回退，避免中文字符在部分环境出现字形缺失。
+            inter_variable_path = font_dir / "Inter-Variable.ttf"
+            inter_regular_path = font_dir / "Inter-Regular.ttf"
+            jetbrains_regular_path = font_dir / "JetBrainsMono-Regular.ttf"
             simhei_path = font_dir / "simhei.ttf"
             simsun_path = font_dir / "simsun.ttf"
 
             css_parts: List[str] = []
+            # 优先注册 Inter（变量字体优先，普通字体兜底）。
+            if inter_variable_path.exists():
+                css_parts.append(
+                    "@font-face {"
+                    "font-family: 'Inter'; "
+                    f"src: url('{inter_variable_path.resolve().as_uri()}') format('truetype'); "
+                    "font-weight: 100 900; "
+                    "font-style: normal; "
+                    "font-display: swap; "
+                    "}"
+                )
+            elif inter_regular_path.exists():
+                css_parts.append(
+                    "@font-face {"
+                    "font-family: 'Inter'; "
+                    f"src: url('{inter_regular_path.resolve().as_uri()}') format('truetype'); "
+                    "font-weight: 400; "
+                    "font-style: normal; "
+                    "font-display: swap; "
+                    "}"
+                )
+
+            # 注册 JetBrains Mono，匹配你 Gemini 风格模板中的等宽字体。
+            if jetbrains_regular_path.exists():
+                css_parts.append(
+                    "@font-face {"
+                    "font-family: 'JetBrains Mono'; "
+                    f"src: url('{jetbrains_regular_path.resolve().as_uri()}') format('truetype'); "
+                    "font-weight: 400; "
+                    "font-style: normal; "
+                    "font-display: swap; "
+                    "}"
+                )
+
+            # 中文兜底字体，保证 CJK 展示稳定。
             if simhei_path.exists():
                 css_parts.append(
                     "@font-face {"
@@ -576,9 +617,9 @@ class MessageSummaryPlugin(MessagePluginInterface):
             # 2. 先使用本地字体，再回退系统字体，兼顾一致性和容错性。
             css_parts.append(
                 ":root { "
-                "--abot-font-sans: 'ABotSimHei', 'ABotSimSun', 'PingFang SC', "
+                "--abot-font-sans: 'Inter', 'ABotSimHei', 'ABotSimSun', 'PingFang SC', "
                 "'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; "
-                "--abot-font-code: 'Cascadia Mono', 'JetBrains Mono', 'Consolas', 'SFMono-Regular', Menlo, monospace; "
+                "--abot-font-code: 'JetBrains Mono', 'Cascadia Mono', 'Consolas', 'SFMono-Regular', Menlo, monospace; "
                 "}"
             )
             return "\n".join(css_parts)