Add best-practices library, knowledge distillation pipeline settings, and first session log

- best-practices/: 11 topic files + INDEX.md extracted from cluster-bootstrap
  and custom-claude-skills (validation, k8s, helm, ansible, secrets, debugging, etc.)
- settings.yaml: pipeline config (log retention, tracked projects, max logs per run)
- CLAUDE.md: updated with best-practices loading and pipeline documentation
- memory/log/: first session log demonstrating the format

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

best-practices/INDEX.md

@@ -0,0 +1,17 @@
+# Best Practices Index
+
+Generalised best practices extracted from real project work. Each topic file is self-contained — read only the files relevant to the current project.
+
+## Topics
+
+- [Validation & Deployment](validation.md) — Validate locally, deploy once; full-chain testing; pre-flight checks
+- [Secrets Management](secrets-management.md) — SOPS + age, credential handling, file naming, encryption gotchas
+- [Git & Source Control](git-source-control.md) — Commit practices, GitOps workflows, remote conventions
+- [Kubernetes Patterns](kubernetes.md) — Volume mounts, deployment strategies, naming, bootstrap ordering
+- [Helm Charts](helm.md) — Schema validation, version verification, values structure
+- [Ansible](ansible.md) — Inventory, templates, idempotency, credential safety
+- [Scripting](scripting.md) — Shell conventions, verification scripts, idempotency, colour output
+- [Documentation Standards](documentation.md) — CLAUDE.md, MEMORY.md, FUTURE.md, README.md structure and tiered memory
+- [Milestones & Reflections](milestones.md) — Milestone workflow, verification, reflection process
+- [Debugging Methodology](debugging.md) — Systematic diagnosis, full-chain testing, common pitfalls
+- [Claude Code Skills](skills-development.md) — Skill authoring, context injection, tool restrictions