The architecture has been updated

hermes_code/gateway/sticker_cache.py

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+"""
+Sticker description cache for Telegram.
+
+When users send stickers, we describe them via the vision tool and cache
+the descriptions keyed by file_unique_id so we don't re-analyze the same
+sticker image on every send. Descriptions are concise (1-2 sentences).
+
+Cache location: ~/.hermes/sticker_cache.json
+"""
+
+import json
+import os
+import time
+from pathlib import Path
+from typing import Optional
+
+from hermes_cli.config import get_hermes_home
+
+
+CACHE_PATH = get_hermes_home() / "sticker_cache.json"
+
+# Vision prompt for describing stickers -- kept concise to save tokens
+STICKER_VISION_PROMPT = (
+    "Describe this sticker in 1-2 sentences. Focus on what it depicts -- "
+    "character, action, emotion. Be concise and objective."
+)
+
+
+def _load_cache() -> dict:
+    """Load the sticker cache from disk."""
+    if CACHE_PATH.exists():
+        try:
+            return json.loads(CACHE_PATH.read_text(encoding="utf-8"))
+        except (json.JSONDecodeError, OSError):
+            return {}
+    return {}
+
+
+def _save_cache(cache: dict) -> None:
+    """Save the sticker cache to disk."""
+    CACHE_PATH.parent.mkdir(parents=True, exist_ok=True)
+    CACHE_PATH.write_text(
+        json.dumps(cache, indent=2, ensure_ascii=False),
+        encoding="utf-8",
+    )
+
+
+def get_cached_description(file_unique_id: str) -> Optional[dict]:
+    """
+    Look up a cached sticker description.
+
+    Returns:
+        dict with keys {description, emoji, set_name, cached_at} or None.
+    """
+    cache = _load_cache()
+    return cache.get(file_unique_id)
+
+
+def cache_sticker_description(
+    file_unique_id: str,
+    description: str,
+    emoji: str = "",
+    set_name: str = "",
+) -> None:
+    """
+    Store a sticker description in the cache.
+
+    Args:
+        file_unique_id: Telegram's stable sticker identifier.
+        description:    Vision-generated description text.
+        emoji:          Associated emoji (e.g. "😀").
+        set_name:       Sticker set name if available.
+    """
+    cache = _load_cache()
+    cache[file_unique_id] = {
+        "description": description,
+        "emoji": emoji,
+        "set_name": set_name,
+        "cached_at": time.time(),
+    }
+    _save_cache(cache)
+
+
+def build_sticker_injection(
+    description: str,
+    emoji: str = "",
+    set_name: str = "",
+) -> str:
+    """
+    Build the warm-style injection text for a sticker description.
+
+    Returns a string like:
+      [The user sent a sticker 😀 from "MyPack"~ It shows: "A cat waving" (=^.w.^=)]
+    """
+    context = ""
+    if set_name and emoji:
+        context = f" {emoji} from \"{set_name}\""
+    elif emoji:
+        context = f" {emoji}"
+
+    return f"[The user sent a sticker{context}~ It shows: \"{description}\" (=^.w.^=)]"
+
+
+def build_animated_sticker_injection(emoji: str = "") -> str:
+    """
+    Build injection text for animated/video stickers we can't analyze.
+    """
+    if emoji:
+        return (
+            f"[The user sent an animated sticker {emoji}~ "
+            f"I can't see animated ones yet, but the emoji suggests: {emoji}]"
+        )
+    return "[The user sent an animated sticker~ I can't see animated ones yet]"