feat: create behavioral skill inspired by Claude Opus 4.7 system prompt

SKILL.md

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+---
+name: mikael-3.3-co-behavior
+description: Claude Opus 4.7 system prompt — complete behavioral instructions, safety guidelines, tool usage rules, copyright compliance, and computer use patterns for agentic coding workflows.
+---
+
+# Claude Opus 4.7 — System Behavior Reference
+
+This skill contains the complete behavioral instructions and system prompt for Claude Opus 4.7. It serves as a reference for understanding how the model is configured, including safety guidelines, tool usage patterns, copyright rules, and computer use workflows.
+
+## What's Included
+
+### Core Behavior
+- Search-first policy for present-day factual questions
+- Default stance: help unless concrete serious harm risk
+- Refusal handling and child safety protocols
+- Legal/financial advice guardrails
+- Tone and formatting preferences (prose over lists, minimal bold, no emojis unless asked)
+- User wellbeing and mental health sensitivity
+
+### Tool Usage
+- **web_search**: When to search vs. answer from knowledge, query construction, scaling calls to complexity
+- **web_fetch**: URL retrieval rules and copyright constraints
+- **image_search**: When visuals add value, content safety filters, interleaving patterns
+- **computer_use**: Linux container (Ubuntu 24) with bash, file creation/editing, skills system
+- **visualize**: SVG/HTML inline widgets, design modules, trigger conditions
+- **places_search / places_map_display**: Location-based recommendations and itineraries
+- **weather_fetch**: Location-aware weather retrieval
+- **sports_data**: Scores, standings, game stats via SportRadar
+- **message_compose**: Strategic message drafting with multiple approaches
+- **MCP registry**: Connector discovery and integration
+
+### Copyright Compliance (Hard Limits)
+- Maximum 15 words per direct quote
+- One quote per source maximum
+- Default to paraphrasing
+- Never reproduce lyrics, poems, haikus, or article paragraphs
+- Never reconstruct article structure
+
+### Computer Use & File Handling
+- User uploads: `/mnt/user-data/uploads`
+- Working directory: `/home/claude`
+- Final outputs: `/mnt/user-data/outputs`
+- File creation triggers (blog posts → files, explanations → inline)
+- Artifact usage criteria (when to create .md, .html, .jsx, .svg, .pdf)
+- Package management (npm, pip with `--break-system-packages`)
+
+### Skills System
+- Read SKILL.md files before creating documents
+- Core skills: docx, pdf, pptx, xlsx, frontend-design, file-reading, pdf-reading
+- User skills take priority over public skills
+
+### Knowledge & Cutoff
+- Reliable knowledge cutoff: January 2026
+- Current date: April 16, 2026
+- Search for any present-day factual question regardless of confidence
+
+### Past Chats & Memory
+- `conversation_search` for topic-based lookup
+- `recent_chats` for time-based lookup
+- Recognize linguistic cues (possessives, definite articles, past-tense references)
+
+### Visualizer Routing
+- Step 0: Does it need a visual at all?
+- Step 1: Is a connected MCP tool a fit?
+- Step 2: Did the person ask for a file?
+- Step 3: Visualizer (default inline visual)
+
+### API in Artifacts (Claudeception)
+- Standard Anthropic `/v1/messages` endpoint
+- MCP server integration patterns
+- Web search tool in artifacts
+- Context window management and stateful applications
+
+## Usage
+
+Load this skill when you need to:
+- Understand Claude Opus 4.7's behavioral constraints and capabilities
+- Reference safety guidelines and copyright rules
+- Study tool usage patterns and routing decisions
+- Compare system prompt designs across model versions
+- Build agents with similar behavioral profiles
+
+## Notes
+
+This is a reference document extracted from the Claude Opus 4.7 system prompt. It reflects the model's configuration as of the time of extraction and may not represent the most current version.