remove：emoji插件，修复tool被截断的问题

src/chat/emoji_system/maisaka_tool.py

@@ -0,0 +1,202 @@
+"""Maisaka 表情工具内置能力。"""
+
+from dataclasses import dataclass, field
+from typing import Sequence
+
+import random
+
+from src.common.data_models.image_data_model import MaiEmoji
+from src.common.data_models.llm_service_data_models import LLMGenerationOptions
+from src.common.logger import get_logger
+from src.common.utils.utils_image import ImageUtils
+from src.services import send_service
+
+from .emoji_manager import emoji_manager, emoji_manager_emotion_judge_llm
+
+logger = get_logger("emoji_maisaka_tool")
+
+
+@dataclass(slots=True)
+class MaisakaEmojiSendResult:
+    """Maisaka 表情发送结果。"""
+
+    success: bool
+    message: str
+    emoji_base64: str = ""
+    description: str = ""
+    emotions: list[str] = field(default_factory=list)
+    requested_emotion: str = ""
+    matched_emotion: str = ""
+
+
+def _normalize_emotions(emoji: MaiEmoji) -> list[str]:
+    """提取并清洗单个表情的情绪标签。"""
+
+    return [str(item).strip() for item in emoji.emotion if str(item).strip()]
+
+
+def _build_recent_context_text(context_texts: Sequence[str], max_items: int = 5) -> str:
+    """构建供情绪判断使用的最近上下文文本。"""
+
+    normalized_items = [str(item).strip() for item in context_texts if str(item).strip()]
+    if not normalized_items:
+        return ""
+    return "\n".join(normalized_items[-max_items:])
+
+
+async def _select_emoji_with_llm(
+    *,
+    sampled_emojis: Sequence[MaiEmoji],
+    reasoning: str,
+    context_text: str,
+) -> tuple[MaiEmoji, str]:
+    """让模型在采样表情中选择更合适的情绪标签。"""
+
+    emotion_map: dict[str, list[MaiEmoji]] = {}
+    for emoji in sampled_emojis:
+        for emotion in _normalize_emotions(emoji):
+            emotion_map.setdefault(emotion, []).append(emoji)
+
+    available_emotions = list(emotion_map.keys())
+    if not available_emotions:
+        return random.choice(list(sampled_emojis)), ""
+
+    prompt = (
+        "你正在为聊天场景选择一个最合适的表情包情绪标签。\n"
+        f"发送原因：{reasoning or '辅助表达当前语气和情绪'}\n"
+        f"最近聊天记录：\n{context_text or '（暂无额外上下文）'}\n\n"
+        "可选情绪标签如下：\n"
+        f"{chr(10).join(available_emotions)}\n\n"
+        "请只返回一个最匹配的情绪标签，不要解释。"
+    )
+
+    try:
+        llm_result = await emoji_manager_emotion_judge_llm.generate_response(
+            prompt,
+            options=LLMGenerationOptions(temperature=0.3, max_tokens=60),
+        )
+        chosen_emotion = (llm_result.response or "").strip().strip("\"'")
+    except Exception as exc:
+        logger.warning(f"使用 LLM 选择表情情绪失败，将回退为随机选择: {exc}")
+        chosen_emotion = ""
+
+    if chosen_emotion and chosen_emotion in emotion_map:
+        return random.choice(emotion_map[chosen_emotion]), chosen_emotion
+    return random.choice(list(sampled_emojis)), ""
+
+
+async def select_emoji_for_maisaka(
+    *,
+    requested_emotion: str = "",
+    reasoning: str = "",
+    context_texts: Sequence[str] | None = None,
+    sample_size: int = 30,
+) -> tuple[MaiEmoji | None, str]:
+    """为 Maisaka 选择一个合适的表情。"""
+
+    available_emojis = list(emoji_manager.emojis)
+    if not available_emojis:
+        return None, ""
+
+    normalized_requested_emotion = requested_emotion.strip()
+    if normalized_requested_emotion:
+        matched_emojis = [
+            emoji
+            for emoji in available_emojis
+            if normalized_requested_emotion.lower() in (emotion.lower() for emotion in _normalize_emotions(emoji))
+        ]
+        if matched_emojis:
+            return random.choice(matched_emojis), normalized_requested_emotion
+
+    sampled_emojis = random.sample(
+        available_emojis,
+        min(max(sample_size, 1), len(available_emojis)),
+    )
+    context_text = _build_recent_context_text(context_texts or [])
+    return await _select_emoji_with_llm(
+        sampled_emojis=sampled_emojis,
+        reasoning=reasoning,
+        context_text=context_text,
+    )
+
+
+async def send_emoji_for_maisaka(
+    *,
+    stream_id: str,
+    requested_emotion: str = "",
+    reasoning: str = "",
+    context_texts: Sequence[str] | None = None,
+) -> MaisakaEmojiSendResult:
+    """为 Maisaka 选择并发送一个表情。"""
+
+    selected_emoji, matched_emotion = await select_emoji_for_maisaka(
+        requested_emotion=requested_emotion,
+        reasoning=reasoning,
+        context_texts=context_texts,
+    )
+    if selected_emoji is None:
+        return MaisakaEmojiSendResult(
+            success=False,
+            message="当前表情包库中没有可用表情。",
+            requested_emotion=requested_emotion.strip(),
+        )
+
+    try:
+        emoji_base64 = ImageUtils.image_path_to_base64(str(selected_emoji.full_path))
+        if not emoji_base64:
+            raise ValueError("表情图片转换为 base64 失败")
+    except Exception as exc:
+        return MaisakaEmojiSendResult(
+            success=False,
+            message=f"发送表情包失败：{exc}",
+            description=selected_emoji.description.strip(),
+            emotions=_normalize_emotions(selected_emoji),
+            requested_emotion=requested_emotion.strip(),
+            matched_emotion=matched_emotion,
+        )
+
+    try:
+        sent = await send_service.emoji_to_stream(
+            emoji_base64=emoji_base64,
+            stream_id=stream_id,
+            storage_message=True,
+            set_reply=False,
+            reply_message=None,
+        )
+    except Exception as exc:
+        return MaisakaEmojiSendResult(
+            success=False,
+            message=f"发送表情包时发生异常：{exc}",
+            description=selected_emoji.description.strip(),
+            emotions=_normalize_emotions(selected_emoji),
+            requested_emotion=requested_emotion.strip(),
+            matched_emotion=matched_emotion,
+        )
+
+    description = selected_emoji.description.strip()
+    emotions = _normalize_emotions(selected_emoji)
+    if not sent:
+        return MaisakaEmojiSendResult(
+            success=False,
+            message="发送表情包失败。",
+            description=description,
+            emotions=emotions,
+            requested_emotion=requested_emotion.strip(),
+            matched_emotion=matched_emotion,
+        )
+
+    emoji_manager.update_emoji_usage(selected_emoji)
+    success_message = (
+        f"已发送表情包：{description}（情绪：{', '.join(emotions)}）"
+        if emotions
+        else f"已发送表情包：{description}"
+    )
+    return MaisakaEmojiSendResult(
+        success=True,
+        message=success_message,
+        emoji_base64=emoji_base64,
+        description=description,
+        emotions=emotions,
+        requested_emotion=requested_emotion.strip(),
+        matched_emotion=matched_emotion,
+    )