chore: update .gitignore and enhance remote speaker compose validation script

- Added support for additional example environment files in .gitignore.
- Improved the validation script for remote speaker compose by checking for the existence of the compose file and allowing for optional merging of example environment files, enhancing local and documentation parity.

deploy/compose/.env.remote-speaker-tls.example

@@ -0,0 +1,11 @@
+# TLS для Traefik (profile production). Скопируйте в .env.remote-speaker-tls
+
+# FQDN agent API (DNS only в Cloudflare → IP этой VPS)
+AGENT_DOMAIN=bgp-dc2.example.com
+
+# Let's Encrypt + Cloudflare DNS challenge (как evobgp-edge на CP)
+LETSENCRYPT_EMAIL=[email protected]
+CF_DNS_API_TOKEN=
+
+# IP основного сервера (Panel) — единственный источник wake-up / health
+PANEL_IP_WHITELIST=203.0.113.1/32

deploy/compose/.env.remote-speaker.example

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+# Скопируйте в .env.remote-speaker рядом с docker-compose.remote-speaker.yaml
+# Значения agent_secret и node token — из Web UI после создания спикера.
+
+EVOBGP_REGISTRY=git.shts.su/denozord
+EVOBGP_IMAGE_TAG=latest
+
+# Control plane (HTTPS в prod)
+EVOBGP_CONTROL_PLANE_URL=https://cp.example.com:8080
+
+# Из карточки спикера в панели
+EVOBGP_SPEAKER_ID=00000000-0000-0000-0000-000000000001
+EVOBGP_AGENT_SECRET=change-me-from-ui-once
+EVOBGP_NODE_TOKEN=evobgp_node_token_from_access
+
+# GET /v1/bundle/signing-public-key (operator) или env CP EVOBGP_BUNDLE_SEED_HEX
+EVOBGP_BUNDLE_PUBKEY_BASE64=
+
+# Fallback polling (profile fallback)
+EVOBGP_SYNC_INTERVAL_SEC=300
+
+# Lab profile plain — порт agent на хосте
+EVOBGP_AGENT_PORT=8443