Claude/review scm security h yk ai (#3)

* fix(security): replace template placeholders and add roadmap

- Update SCM files (META, ECOSYSTEM, STATE) to use 'doit-ssg' instead of 'template-repo'
- Fix SECURITY.md by replacing all {{PLACEHOLDER}} values with actual project info
- Fix CODE_OF_CONDUCT.md with proper project references and contact methods
- Fix CONTRIBUTING.md with complete setup guide and security guidelines
- Add comprehensive roadmap in STATE.scm (v0.1.0 through v1.0.0)
- Add ADR-002 for Hub-Satellite Architecture in META.scm
- Update development practices to specify JavaScript/TypeScript and Deno tooling

* feat(build): add comprehensive build system and neurosymbolic config

Build System (4/4 complete):
- justfile: 50+ task recipes for build, test, lint, security, adapters
- Mustfile: mandatory quality gates and pre-commit/pre-push hooks
- cookbook.adoc: comprehensive CLI/Just/Nickel reference with hyperlinks
- .github/workflows/ci.yml: full CI pipeline (lint, test, security, build)

SCM Files (6/6 complete):
- META.scm: added ADR-003 (Just+Mustfile), ADR-004 (Neurosymbolic)
- ECOSYSTEM.scm: enhanced with integration points and language tiers
- STATE.scm: updated roadmap v0.1-v1.0, 50% completion
- PLAYBOOK.scm: operational workflows and runbooks
- AGENTIC.scm: AI agent configuration and guardrails
- NEUROSYM.scm: neurosymbolic reasoning patterns and knowledge graph

Security enhancements:
- SHA-pinned GitHub Actions in ci.yml
- Secret detection in CI pipeline
- SPDX header verification
- Adapter interface validation

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Co-authored-by: Claude <noreply@anthropic.com>

Author: hyperpolymath