Add best practices, hooks, memory files, and scripts from recent sessions

Includes: spec-driven and test-driven development best practices,
reproduce-before-fixing debugging workflow, require-plan-file hook,
find-project-root script, session logs, memory files for decisions/
gotchas/process-lessons, and updates to existing best practice topics.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

settings.yaml

@@ -8,7 +8,13 @@ reflect:
   max_logs_per_run: 10         # Process at most N logs per invocation
 
 distill:
-  projects_dir: ~/dev/claude/projects
+  projects_dir: projects       # Relative to CLAUDE_PROJECT_ROOT
   projects:                    # Projects to scan for memory changes
+    - agent-runtimes
+    - claude-foundations
+    - cluster-apps/octopus-deploy
     - cluster-bootstrap
     - custom-claude-skills
+    - hugo-accelerator
+  extra_projects:              # Projects outside projects_dir (paths relative to CLAUDE_PROJECT_ROOT)
+    - path: small-scripts