将flask改成fastapi

rag/prompts/toc_index.md

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+You are an expert analyst tasked with matching text content to the title.
+
+**Instructions:**
+1. Analyze the given title with its numeric structure index and the provided text.
+2. Determine whether the title is mentioned as a section tile in the given text.
+3. Provide a concise, step-by-step reasoning for your decision.
+4. Output **only** the complete JSON object. Do not include any other text, explanations, or markdown code block fences (like ```json).
+
+**Output Format:**
+Your output must be a valid JSON object with the following keys:
+{
+"reasoning": "Step-by-step explanation of your analysis.",
+"exist": "<yes or no>",
+}
+
+** The title: **
+{{ structure }} {{ title }}
+
+** Given text: **
+{{ text }}