docs: rewrite README with structured overview and quick start guide

Replaces the minimal project description with a comprehensive README
including a component overview table, quick start instructions, common
Ansible operations, and links to detailed documentation. Aligns with
Red Panda Approval™ standards.

ansible/inventory/host_vars/miranda.incus.yml

@@ -0,0 +1,74 @@
+---
+# Miranda Configuration - MCP Docker Host
+# Services: alloy, argos, docker, mcpo, neo4j_mcp
+
+services:
+  - alloy
+  - argos
+  - docker
+  - gitea_mcp
+  - grafana_mcp
+  - mcpo
+  - neo4j_mcp
+
+# Alloy
+alloy_log_level: "warn"
+argos_syslog_port: 51434
+neo4j_cypher_syslog_port: 51431
+grafana_mcp_syslog_port: 51433
+gitea_mcp_syslog_port: 51435
+
+# Argos MCP Configuration
+argos_user: argos
+argos_group: argos
+argos_directory: /srv/argos
+argos_port: 25534
+argos_log_level: INFO
+argos_searxng_instances: http://oberon.incus:22083/
+argos_cache_ttl: 300
+argos_max_results: 10
+argos_request_timeout: 30.0
+argos_health_check_timeout: 5.0
+argos_kvdb_host: localhost
+argos_kvdb_port: 11211
+argos_kvdb_prefix: argos
+argos_enable_startup_health_check: true
+
+# Docker API Configuration
+docker_api_enabled: true
+docker_api_port: 2375
+docker_api_host: "0.0.0.0"
+
+# Neo4j MCP Config
+neo4j_mcp_user: neo4j_mcp
+neo4j_mcp_group: neo4j_mcp
+neo4j_mcp_directory: /srv/neo4j_mcp
+
+# Grafana MCP Config
+grafana_mcp_user: grafana_mcp
+grafana_mcp_group: grafana_mcp
+grafana_mcp_directory: /srv/grafana_mcp
+grafana_mcp_port: 25533
+grafana_mcp_grafana_host: prospero.incus
+grafana_mcp_grafana_port: 3000
+grafana_service_account_token: "{{ vault_grafana_service_account_token }}"
+
+# Gitea MCP Config
+gitea_mcp_user: gitea_mcp
+gitea_mcp_group: gitea_mcp
+gitea_mcp_directory: /srv/gitea_mcp
+gitea_mcp_port: 25535
+gitea_mcp_host: https://gitea.ouranos.helu.ca
+gitea_mcp_access_token: "{{ vault_gitea_mcp_access_token }}"
+
+# Neo4j Cypher MCP
+neo4j_host: ariel.incus
+neo4j_bolt_port: 7687
+neo4j_auth_password: "{{ vault_neo4j_auth_password }}"
+neo4j_cypher_mcp_port: 25531
+
+# MCPO Config
+mcpo_user: mcpo
+mcpo_group: mcpo
+mcpo_directory: /srv/mcpo
+mcpo_port: 25530