Added Prompt for tools (#68)

* Create detailed markdown instructions for all toolkits
* Update all toolkit classes to load instructions from external .md files
* Add query examples for cryptocurrency report generation

src/app/api/tools/instructions/social_instructions.md

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+# Social Media APIs - Instructions
+
+## Tools (2)
+**Single-source (fast):** First available platform
+1. `get_top_crypto_posts(limit=5)` - Top crypto posts, first platform
+
+**Aggregated (comprehensive):** All platforms (3x API calls: Reddit, X, 4chan)
+2. `get_top_crypto_posts_aggregated(limit_per_wrapper=5)` - Posts from all platforms
+
+## Selection Strategy
+- Quick snapshot → single-source (tool 1)
+- Keywords "all platforms", "comprehensive", "compare" → aggregated (tool 2)
+
+## Post Structure
+Contains: content, author, platform, url, created_at, score/upvotes, comments_count, subreddit/board
+
+## Limits (posts are verbose)
+- Quick: 5 (default) | Standard: 10-15 | Deep: 20-30 | Max: 50
+
+## Platform Notes
+- **Reddit:** r/cryptocurrency, r/bitcoin, r/ethereum (upvotes metric)
+- **X (Twitter):** High engagement crypto tweets (likes metric)
+- **4chan:** /biz/ board (replies metric, may contain inappropriate language)
+
+## Critical Rules
+- Never fabricate posts - only report actual tool outputs
+- Include: platform, author, URL, engagement metrics, timestamp
+- Truncate content to max 280 chars
+- Summarize sentiment trends, don't list all posts verbatim
+- Frame as opinions, not facts - add disclaimers for unverified info
+- Be VERY concise to save tokens
+
+## Sentiment Analysis
+- Identify recurring topics, positive/negative patterns, trending coins
+- Compare sentiment across platforms, highlight high engagement
+- Flag potential FUD or shilling
+- Do not treat social media posts as factual evidence
+- Encourage users to verify information from official sources
+
+BEST PRACTICES:
+- Use aggregated tool for sentiment comparison across platforms
+- Combine with news data for context
+- Focus on high-engagement posts for quality
+- Summarize trends rather than listing every post
+- Be selective - quality over quantity
+- Respect character limits to avoid token overflow