diff --git a/.copilot-track/crawl/README.md b/.copilot-track/crawl/README.md
new file mode 100644
index 000000000..8adf81bad
--- /dev/null
+++ b/.copilot-track/crawl/README.md
@@ -0,0 +1,33 @@
+# Copilot Track — Crawl Phase
+
+This directory stores evidence, prompt snippets, and notes gathered during the **Crawl** phase of the AI-track course.
+
+---
+
+## What is the Crawl phase?
+
+The track is structured as **Crawl → Walk → Run**:
+
+| Phase | Goal |
+|-------|------|
+| **Crawl** | Understand the codebase; build mental models; confirm dev toolchain works |
+| **Walk** | Make guided changes with Copilot assistance; write tests |
+| **Run** | Independent features, refactors, and PR-ready contributions |
+
+---
+
+## Prompt usage
+
+Save the prompts you used with Copilot here:
+
+```
+.copilot-track/crawl/
+  lesson-01.md   ← prompts + notes for lesson 1
+  lesson-02.md
+  ...
+```
+
+Each file should contain:
+1. The **prompt** you sent to Copilot (verbatim or paraphrased).
+2. A brief **summary** of what worked / didn't work.
+3. Any **follow-up prompts** needed to reach the final answer.
diff --git a/ai-track-docs/SYSTEM-OVERVIEW.md b/ai-track-docs/SYSTEM-OVERVIEW.md
new file mode 100644
index 000000000..fdceaf411
--- /dev/null
+++ b/ai-track-docs/SYSTEM-OVERVIEW.md
@@ -0,0 +1,31 @@
+# System Overview
+
+> **Status:** Placeholder — fill in during the Crawl phase.
+
+## What is Squidex?
+
+Squidex is an open-source headless CMS built on ASP.NET Core (backend) and Angular (frontend).
+
+## Top-level directories
+
+| Directory | Description |
+|-----------|-------------|
+| `backend/` | ASP.NET Core solution — domain, infrastructure, API |
+| `frontend/` | Angular SPA |
+| `sdk/` | Preact-based plugin/widget SDK |
+| `tools/e2e/` | Playwright end-to-end tests |
+| `tools/k6/` | k6 load tests |
+| `ai-track-docs/` | AI-track reference docs (this folder) |
+| `.copilot-track/` | Copilot-track helper prompts & crawl evidence |
+
+## Key external dependencies
+
+- MongoDB (primary datastore) or Entity Framework (SQL alternative)
+- ASP.NET Core Identity / OpenID Connect
+- Angular CLI, Vitest (unit), Playwright (e2e)
+
+## TODO — complete during Crawl
+
+- [ ] List major bounded contexts / domain aggregates
+- [ ] Document auth flow
+- [ ] Note any feature flags or environment variables required for local dev
diff --git a/ai-track-docs/architecture.mmd b/ai-track-docs/architecture.mmd
new file mode 100644
index 000000000..9a1e825fd
--- /dev/null
+++ b/ai-track-docs/architecture.mmd
@@ -0,0 +1,34 @@
+%% architecture.mmd — Squidex high-level component diagram
+%% Status: Placeholder — refine during the Crawl phase.
+%%
+%% Render with: mmdc -i architecture.mmd -o architecture.svg
+
+graph TD
+    Client["Browser / Mobile Client"]
+
+    subgraph Frontend["frontend/ (Angular SPA)"]
+        AngularApp["Angular App"]
+    end
+
+    subgraph API["backend/src/Squidex (ASP.NET Core)"]
+        WebAPI["REST & GraphQL API"]
+        Auth["OpenID Connect / Identity"]
+        Domain["Domain Layer"]
+        Infra["Infrastructure Layer"]
+    end
+
+    subgraph DataStores["Data Stores"]
+        Mongo["MongoDB"]
+        EF["SQL / Entity Framework (optional)"]
+    end
+
+    Client -->|HTTPS| AngularApp
+    Client -->|HTTPS| WebAPI
+    AngularApp -->|REST / GraphQL| WebAPI
+    WebAPI --> Auth
+    WebAPI --> Domain
+    Domain --> Infra
+    Infra --> Mongo
+    Infra -.->|alternative| EF
+
+    %% TODO during Crawl: add event bus, asset storage, caching nodes
diff --git a/ai-track-docs/build-test.md b/ai-track-docs/build-test.md
new file mode 100644
index 000000000..c76add548
--- /dev/null
+++ b/ai-track-docs/build-test.md
@@ -0,0 +1,47 @@
+# Build & Test Reference
+
+> **Status:** Placeholder — verify commands during the Crawl phase and update.
+
+## Backend (ASP.NET Core)
+
+```bash
+# Restore & build
+cd backend
+dotnet restore Squidex.slnx
+dotnet build Squidex.slnx
+
+# Run unit tests
+dotnet test tests/tests.sln
+
+# Run with coverage
+cd tests && pwsh RunCoverage.ps1
+```
+
+## Frontend (Angular)
+
+```bash
+cd frontend
+npm ci
+npm run build
+npm test
+```
+
+## End-to-end (Playwright)
+
+```bash
+cd tools/e2e
+npm ci
+npx playwright test
+```
+
+## Docker / local stack
+
+```bash
+docker build -t squidex:local .
+```
+
+## TODO — complete during Crawl
+
+- [ ] Confirm env vars needed for `dotnet run`
+- [ ] Add any seed-data or migration steps
+- [ ] Note CI pipeline entry points