docs: add README and EDITOR_SETUP with YAML pipeline template section

- README.md: project overview, quick start, deploy instructions
- EDITOR_SETUP.md: editor config (neovim, VS Code), full feature matrix
  - Bicep: internal module registry, versions, params, allowed values
  - YAML AzDO: pipeline template completions with parameter injection
  - YAML GHA: reusable workflow completions with input injection
  - Health check fields explained, smoke test usage

README.md

@@ -0,0 +1,47 @@
+# iLSP — Internal LSP Proxy
+
+Self-hosted Language Server Protocol proxy for LRU's internal tooling.
+Runs at **https://ilsp.i80.dk** (Nomad/Docker, `autobox.i80.dk`).
+
+Provides smart autocomplete on top of standard LSPs:
+
+| Language | Endpoint | Extra completions |
+|----------|----------|------------------|
+| Bicep | `wss://ilsp.i80.dk/bicep` | Internal ACR modules, versions, params |
+| YAML | `wss://ilsp.i80.dk/yaml` | AzDO pipeline templates, GHA reusable workflows |
+| Python | `wss://ilsp.i80.dk/python` | Jedi (standard) |
+
+→ See **[EDITOR_SETUP.md](EDITOR_SETUP.md)** for editor configuration and a full feature overview.
+
+## Quick start
+
+```bash
+# Check service health
+curl https://ilsp.i80.dk/health
+
+# Run smoke tests
+python3 scripts/smoke_test_completions.py
+
+# Local dev
+make run        # build + start + health check
+make run-quick  # start without rebuilding
+make logs       # tail container logs
+make health     # curl health endpoint
+```
+
+## Updating catalogs
+
+```bash
+python3 scripts/sync_pipeline_templates.py  # scan AzDO + GHA template repos
+bash scripts/push_catalogs.sh               # scp to server + /reload
+```
+
+## Deploy
+
+Push to `main` → Gitea Actions builds image → Nomad deploys automatically.
+
+```bash
+# Manual deploy (if CI is down)
+git push
+ssh autobox.i80.dk 'nomad job run /opt/nomad/jobs/ilsp.nomad'
+```