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>

MEMORY.md

@@ -1,5 +1,9 @@
 # claude-foundations — Memory Index
 
+## Runbooks
+
+- [New ArgoCD App](memory/runbook-new-argocd-app.md) — Full procedure: manifests, KSOPS secrets, ArgoCD Application, Caddy reverse proxy, DNS, verification, common pitfalls
+
 ## Scripts
 
 - [context-load](memory/script-context-load.md) — Walks cwd upward collecting CLAUDE.md, CONTEXT.md, MEMORY.md, BESTPRACTICES.md, trees, and git status for system prompt injection
@@ -7,6 +11,7 @@
 - [install-hooks](memory/script-install-hooks.md) — Symlinks hooks into ~/.claude/hooks/ and prints settings.json config
 - [setup-formatters](memory/script-setup-formatters.md) — Opts a project into auto-formatting by symlinking formatter scripts
 - [git-status-report](memory/script-git-status-report.md) — Scans directories for git repos, reports uncommitted changes and remote sync (lives in small-scripts)
+- [require-plan-file](memory/script-require-plan-file.md) — PreToolUse hook: blocks ExitPlanMode unless a *-PLAN.md file exists in the project root
 
 ## Skills
 
@@ -15,3 +20,10 @@
 - [/reflect](memory/skill-reflect.md) — Milestone reflection: reviews conversation + git log, produces structured artifacts
 - [/distill-best-practices](memory/skill-distill-best-practices.md) — Cross-project distillation of memory files into best-practices/ topic files
 - [/linter](memory/skill-linter.md) — Audit and manage project formatters/linters (scan, run, cleanup modes)
+- [/context-load](memory/skill-context-load.md) — Reload project context after /clear or mid-session context loss
+
+## Topic Files
+
+- [Decisions](memory/decisions.md) — Architecture and design decisions: pipeline design, linting system, context-load, CLAUDE.md structure
+- [Process Lessons](memory/process-lessons.md) — Working rules: git-status at session start, plan mode for architecture, hook exit codes, ssh-agent
+- [Skills Gotchas](memory/gotchas-skills.md) — Broken symlinks under set -e, mid-session skill discovery limitation