refactor: rename SolaceScanScout to Solace and update related configurations

- Updated branding from "SolaceScanScout" to "Solace" across various files including deployment scripts, API responses, and documentation.
- Changed default base URL for Playwright tests and updated security headers to reflect the new branding.
- Enhanced README and API documentation to include new authentication endpoints and product access details.

This refactor aligns the project branding and improves clarity in the API documentation.

deployment/common/nginx-rpc-api-key-gate.conf

@@ -0,0 +1,56 @@
+# Example nginx gate for API-key-protected RPC upstreams using the explorer access API.
+# This pattern assumes the explorer config/API backend listens on 127.0.0.1:8081 and
+# exposes GET /api/v1/access/internal/validate-key for nginx auth_request.
+#
+# Replace:
+# - ACCESS_INTERNAL_SECRET_VALUE with a real shared secret
+# - protected-rpc.example.org with the public host you are protecting
+# - upstream IP:port with the actual RPC lane (e.g. 192.168.11.212:8545 or 192.168.11.217:8545)
+#
+# Clients should send the API key as:
+# - X-API-Key: sk_live_...
+# or
+# - Authorization: Bearer sk_live_...
+
+server {
+    listen 443 ssl http2;
+    server_name protected-rpc.example.org;
+
+    # Internal subrequest used by auth_request.
+    location = /__access_validate_rpc {
+        internal;
+        proxy_pass http://127.0.0.1:8081/api/v1/access/internal/validate-key;
+        proxy_pass_request_body off;
+        proxy_set_header Content-Length "";
+        proxy_set_header X-Access-Internal-Secret "ACCESS_INTERNAL_SECRET_VALUE";
+        proxy_set_header X-API-Key $http_x_api_key;
+        proxy_set_header Authorization $http_authorization;
+        proxy_set_header X-Access-Method $request_method;
+        proxy_set_header X-Access-Request-Count "1";
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    }
+
+    location / {
+        auth_request /__access_validate_rpc;
+
+        # Optional metadata exported from the validator for logging or rate decisions.
+        auth_request_set $validated_product $upstream_http_x_validated_product;
+        auth_request_set $validated_tier $upstream_http_x_validated_tier;
+        auth_request_set $validated_scopes $upstream_http_x_validated_scopes;
+        auth_request_set $quota_remaining $upstream_http_x_quota_remaining;
+
+        proxy_pass http://192.168.11.217:8545;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+
+        # Helpful for downstream logs and operational tracing.
+        proxy_set_header X-Validated-Product $validated_product;
+        proxy_set_header X-Validated-Tier $validated_tier;
+        proxy_set_header X-Validated-Scopes $validated_scopes;
+        proxy_set_header X-Quota-Remaining $quota_remaining;
+    }
+}