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>

settings.yaml

@@ -0,0 +1,14 @@
+# Knowledge distillation pipeline settings
+
+log:
+  retention_days: 7            # Prune reflected logs older than this
+  warn_unreflected_days: 14    # Warn (don't delete) unreflected logs older than this
+
+reflect:
+  max_logs_per_run: 10         # Process at most N logs per invocation
+
+distill:
+  projects_dir: ~/dev/claude/projects
+  projects:                    # Projects to scan for memory changes
+    - cluster-bootstrap
+    - custom-claude-skills