feat: add codebase knowledge graphs for all 20 stacks (#029)

.claude/settings.json

@@ -1,5 +1,4 @@
 {
-  "model": "opusplan",
   "env": {
     "CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS": "1"
   },
@@ -61,6 +60,7 @@
     ],
     "defaultMode": "auto"
   },
+  "model": "opusplan",
   "hooks": {
     "Notification": [
       {
@@ -89,7 +89,8 @@
     "frontend-design@claude-plugins-official": true,
     "security-guidance@claude-plugins-official": true,
     "superpowers@claude-plugins-official": true,
-    "typescript-lsp@claude-plugins-official": true
+    "typescript-lsp@claude-plugins-official": true,
+    "understand-anything@understand-anything": true
   },
   "sandbox": {
     "enabled": true,

.github/copilot-instructions.md

@@ -2,6 +2,8 @@
 
 **Scope:** Repo-wide guardrails and navigation for GitHub Copilot Chat. Keep changes within this monorepo; respect existing workflows and Claude skills.
 
+Keep `CLAUDE.md` in sync: mirror cross-cutting rule changes back to `CLAUDE.md`.
+
 ## How to Use This Guide
 - Start here, then jump to the focused partials in `.github/agents/` for on-demand detail.
 - For automation recipes, see `.github/agents/skills-index.md` to leverage existing `.claude/skills` instead of duplicating them.
@@ -37,6 +39,9 @@
 When responding to PR review feedback, do not directly apply reviewer suggestions to files in `.agents/skills/` — post a reply noting the suggestion will be addressed upstream instead. Skills sourced from `WhatIfWeDigDeeper/agent-skills` (e.g., `pr-comments`, `ship-it`, `learn`, `playwright-cli`) are maintained upstream; deliberate version upgrades or syncs via dedicated PRs are fine. Only project-owned files (`scripts/`, `.vscode/`, `docs/`, `fastapi/`, application source) are in-scope for directly applying reviewer feedback.
 
 ## Cross-Cutting Patterns
+- **Bash write loops silently fail in sandbox**: `for f in ...; do cp ...; done` loops writing to project subdirs silently no-op — use `python3 -c "import shutil; shutil.copy2(src, dst)"` instead.
+- **gitignore slash anchors pattern to root**: A pattern with an internal `/` (like `foo/bar/`) is anchored to the `.gitignore` root — use `**/foo/bar/` to match nested directories too.
+- **README TOC**: When adding a section or subsection to `README.md`, add a matching TOC entry. Anchor format: lowercase, spaces → `-`, drop special characters except hyphens. Subsections indent two spaces under their parent.
 - **Validation limit changes**: When updating max lengths in constants/schemas, grep for hardcoded boundary values in tests (e.g., `repeat(1001)`) — tests may silently pass with stale limits
 - **GitHub CLI pager fallback in VS Code**: If `gh` opens the alternate buffer or exits 130 despite `GH_PAGER=cat PAGER=cat`, redirect output to a temp file and inspect it in the editor or with CLI tools like `cat`, `sed`, or `rg` (for example, `TMP=$(mktemp ...); gh pr view ... > "$TMP"`).
 - **Shared tests**: See `tests/CLAUDE.md` for API/E2E lifecycle, `--runInBand`, cleanup, and Playwright/WebKit quirks.

.gitignore

@@ -207,3 +207,7 @@ data/
 
 # AWS CDK synthesis output
 cdk.out/
+
+# understand-anything build artifacts
+**/.understand-anything/intermediate/
+**/.understand-anything/tmp/

.understand-anything/.understandignore

@@ -0,0 +1,111 @@
+# .understandignore — patterns for files/dirs to exclude from analysis
+# Syntax: same as .gitignore (globs, # comments, ! negation, trailing / for dirs)
+# Lines below are suggestions — uncomment to activate.
+# Use ! prefix to force-include something excluded by defaults.
+#
+# Built-in defaults (always excluded unless negated):
+#   node_modules/, .git/, dist/, build/, obj/, *.lock, *.min.js, etc.
+#
+# --- From .gitignore (uncomment to exclude) ---
+
+# logs
+# npm-debug.log*
+# yarn-debug.log*
+# yarn-error.log*
+# lerna-debug.log*
+# report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+# pids
+# *.pid
+# *.seed
+# *.pid.lock
+# lib-cov
+# *.lcov
+# .nyc_output
+# .grunt
+# bower_components
+# .lock-wscript
+# build/Release
+# jspm_packages/
+# web_modules/
+# *.tsbuildinfo
+# .npm
+# .eslintcache
+# .stylelintcache
+# .node_repl_history
+# *.tgz
+# .yarn-integrity
+# .env
+# .env.*
+# !.env.example
+# .parcel-cache
+# next-env.d.ts
+# .nuxt
+# .output
+# .vuepress/dist
+# .temp
+# .svelte-kit/
+# **/.vitepress/dist
+# **/.vitepress/cache
+# .docusaurus
+# .serverless/
+# .fusebox/
+# .dynamodb/
+# .firebase/
+# .tern-port
+# .vscode-test
+# .pnp.*
+# .yarn/*
+# !.yarn/patches
+# !.yarn/plugins
+# !.yarn/releases
+# !.yarn/sdks
+# !.yarn/versions
+# vite.config.js.timestamp-*
+# vite.config.ts.timestamp-*
+# **/vite.config.js
+# **/vite.config.d.ts
+# !vite.config.ts
+# test-results/
+# playwright-report*
+# playwright/.cache/
+# *.swp
+# *.swo
+# *~
+# .DS_Store
+# Thumbs.db
+# .vercel
+# *.cpuprofile
+# *.heapprofile
+# .claude/settings.local.json
+# .claude/scheduled_tasks.lock
+# .agent/skills/
+# .agents/skills/
+# .claude/skills/js-deps
+# .claude/skills/learn
+# .claude/skills/mermaid-diagrams
+# .claude/skills/peer-review
+# .claude/skills/playwright-cli
+# .claude/skills/pr-comments
+# .claude/skills/pr-human-guide
+# .claude/skills/ship-it
+# .claude/skills/uv-deps
+# .claude/skills/vercel-react-best-practices
+# .playwright-cli
+# scripts/.tmp/
+# *.py[cod]
+# *.egg-info/
+# rails-api/tmp/
+# data/
+# cdk.out/
+
+# --- Detected directories (uncomment to exclude) ---
+
+# tests/
+# docs/
+# scripts/
+
+# --- Test file patterns (uncomment to exclude) ---
+
+# *.test.*
+# *.spec.*
+# *.snap