docs: fix the Quick Start health check step

CHANGELOG.md

@@ -8,6 +8,14 @@ and the project adheres to CalVer (`YYYY.MM.PATCH`).
 
 ## [Unreleased]
 
+### Fixed
+- **Quick Start health check.** Step 4 told you to run `./scripts/healthcheck-web.sh`
+  on the host, where it fails: the file is not executable and calls `forail-manage`,
+  which exists only inside the backend image. Those scripts are the *container*
+  probes Compose mounts at `/etc/forail/`. The README now points at
+  `docker compose ps` and, for a manual run,
+  `docker compose exec forail-web bash /etc/forail/healthcheck-web.sh`.
+
 ### Added
 - AWX → Forail migration importer (`forail-manage import_from_awx`) — see the
   backend changelog and `forail-deploy/docs/RELEASE_NOTES_v2026.07.0.md`.

README.md

@@ -30,7 +30,15 @@ cp .env.example .env
 docker compose up -d
 
 # 4. Check health
-./scripts/healthcheck-web.sh
+docker compose ps          # every service should report (healthy)
+```
+
+The scripts under `scripts/` are the container health probes — Compose mounts
+them into the containers and runs them there (`bash /etc/forail/healthcheck-web.sh`),
+so they call `forail-manage` and only work inside the image. Run one by hand with:
+
+```bash
+docker compose exec forail-web bash /etc/forail/healthcheck-web.sh && echo healthy
 ```
 
 ## Architecture