feat(dashboard): add service landing and s3 e2e

Author: simota

README.md

@@ -13,7 +13,7 @@ go run ./cmd/devcloud up
 Open the dashboard:
 
 ```text
-http://127.0.0.1:8025/
+http://127.0.0.1:8025/mail
 ```
 
 Send mail to:
@@ -56,6 +56,18 @@ Run the E2E smoke test:
 scripts/mail-e2e.sh
 ```
 
+Run the S3 E2E smoke test with `awscli-local`:
+
+```bash
+scripts/s3-e2e.sh
+```
+
+Keep the S3 server running after the E2E journey so you can inspect the bucket and objects:
+
+```bash
+E2E_INTERACTIVE=true scripts/s3-e2e.sh
+```
+
 Run the E2E script in browser inspection mode. This keeps the server running and leaves the smoke mail visible in the Web UI until `Ctrl-C`.
 
 ```bash
@@ -66,6 +78,7 @@ If the default ports are already in use:
 
 ```bash
 E2E_INTERACTIVE=true E2E_SMTP_PORT=1125 E2E_DASHBOARD_PORT=8125 scripts/mail-e2e.sh
+E2E_INTERACTIVE=true E2E_S3_PORT=14566 E2E_DASHBOARD_PORT=18025 E2E_SMTP_PORT=11025 scripts/s3-e2e.sh
 ```
 
 ## Notes