docs: update documentation with MCP configuration and agent catalog

- Add MCP servers documentation (n8n, context7, sequential-thinking)
- Update README.md with complete project structure and requirements.txt
- Transform agents.md into comprehensive agent staff catalog (9 agents)
- Update CHANGELOG.md with [Unreleased] MCP entries
- Fix ingestion_script.md acceptance criteria checkboxes
- Add .opencode/opencode.json to .gitignore for security
- Include new agent configs: n8n_specialist_agent, context_auditor_agent
- Include new skill playbooks: n8n_automation, context7_documentation

Security: API credentials in .opencode/opencode.json are now gitignored

CHANGELOG.md

@@ -9,18 +9,28 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
-- docs: Project Review Sprint 1 with agent staff analysis
-  - Product Manager UVP alignment assessment
-  - Tech Lead architecture coherence review
-  - Security Auditor risk analysis
-  - Sprint 1 review document in `docs/reviews/s`
+- feat: Configure MCP servers for enhanced AI capabilities
+  - sequential-thinking MCP for structured problem solving
+  - context7 MCP for contextual library documentation retrieval
+  - n8n MCP for workflow automation integration
+- docs: Add agent-specific configurations in `.opencode/agents/`
+  - @n8n_specialist_agent for n8n workflow management
+  - @context_auditor_agent for documentation alignment checks
+- docs: Add skill playbooks in `.opencode/skills/`
+  - TDD_Python_Specialist: Test-driven development workflow
+  - Git_and_Changelog: Conventional commits and changelog standards
+  - n8n_automation_mastery: n8n workflow best practices
+  - context7_documentation_retrivial: Context-aware documentation lookup
+- docs: Add requirements.txt with Python dependencies (pytest, requests)
 
 ### Changed
 
-- docs: Updated README.md with project status badges and improved structure
-- docs: Updated PRD status to reflect Sprint 1 completion
-- docs: Updated ingestion script spec status to "Completed"
-- docs: Updated Sprint 1 verification report with Project Review reference
+- docs: Update README.md with complete project structure
+  - Add MCP configuration section
+  - Document all agent configurations
+  - Include skill playbooks in project tree
+  - Update setup instructions with requirements.txt
+- docs: Refactor setup documentation structure (moved to `docs/1.setup_procedure/`)
 
 ## [0.1.1] - 2026-04-02