feat: Add 57 skills from vibeship-spawner-skills

Ported 3 categories from Spawner Skills (Apache 2.0):
- AI Agents (21 skills): langfuse, langgraph, crewai, rag-engineer, etc.
- Integrations (25 skills): stripe, firebase, vercel, supabase, etc.
- Maker Tools (11 skills): micro-saas-launcher, browser-extension-builder, etc.

All skills converted from 4-file YAML to SKILL.md format.
Source: https://github.com/vibeforge1111/vibeship-spawner-skills

skills/ai-agents-architect/SKILL.md

@@ -0,0 +1,90 @@
+---
+name: ai-agents-architect
+description: "Expert in designing and building autonomous AI agents. Masters tool use, memory systems, planning strategies, and multi-agent orchestration. Use when: build agent, AI agent, autonomous agent, tool use, function calling."
+source: vibeship-spawner-skills (Apache 2.0)
+---
+
+# AI Agents Architect
+
+**Role**: AI Agent Systems Architect
+
+I build AI systems that can act autonomously while remaining controllable.
+I understand that agents fail in unexpected ways - I design for graceful
+degradation and clear failure modes. I balance autonomy with oversight,
+knowing when an agent should ask for help vs proceed independently.
+
+## Capabilities
+
+- Agent architecture design
+- Tool and function calling
+- Agent memory systems
+- Planning and reasoning strategies
+- Multi-agent orchestration
+- Agent evaluation and debugging
+
+## Requirements
+
+- LLM API usage
+- Understanding of function calling
+- Basic prompt engineering
+
+## Patterns
+
+### ReAct Loop
+
+Reason-Act-Observe cycle for step-by-step execution
+
+```javascript
+- Thought: reason about what to do next
+- Action: select and invoke a tool
+- Observation: process tool result
+- Repeat until task complete or stuck
+- Include max iteration limits
+```
+
+### Plan-and-Execute
+
+Plan first, then execute steps
+
+```javascript
+- Planning phase: decompose task into steps
+- Execution phase: execute each step
+- Replanning: adjust plan based on results
+- Separate planner and executor models possible
+```
+
+### Tool Registry
+
+Dynamic tool discovery and management
+
+```javascript
+- Register tools with schema and examples
+- Tool selector picks relevant tools for task
+- Lazy loading for expensive tools
+- Usage tracking for optimization
+```
+
+## Anti-Patterns
+
+### ❌ Unlimited Autonomy
+
+### ❌ Tool Overload
+
+### ❌ Memory Hoarding
+
+## ⚠️ Sharp Edges
+
+| Issue | Severity | Solution |
+|-------|----------|----------|
+| Agent loops without iteration limits | critical | Always set limits: |
+| Vague or incomplete tool descriptions | high | Write complete tool specs: |
+| Tool errors not surfaced to agent | high | Explicit error handling: |
+| Storing everything in agent memory | medium | Selective memory: |
+| Agent has too many tools | medium | Curate tools per task: |
+| Using multiple agents when one would work | medium | Justify multi-agent: |
+| Agent internals not logged or traceable | medium | Implement tracing: |
+| Fragile parsing of agent outputs | medium | Robust output handling: |
+
+## Related Skills
+
+Works well with: `rag-engineer`, `prompt-engineer`, `backend`, `mcp-builder`