fix: expose EMBEDDING_API_BASE, EMBEDDING_MODEL, EMBEDDING_API_KEY in docker-compose and setup.sh

The worker container could not be configured to use an alternative
embedding backend (Ollama, vLLM, etc.) because docker-compose.yml
did not pass through EMBEDDING_API_BASE, EMBEDDING_MODEL, or
EMBEDDING_API_KEY. The worker code (embedding.py) already reads
these env vars — only the compose file was missing the plumbing.

Changes:
- docker-compose.yml: add 3 env vars to worker.environment with
  defaults preserving current OpenRouter/Qwen3 behavior
- setup.sh: add_env for all 3 vars (consistency with EMBEDDING_DIMS)

Closes #29

Author: ClaudioDrews

docker/docker-compose.yml

@@ -67,6 +67,9 @@ services:
       QDRANT_PORT: "6333"
       QDRANT_API_KEY: ${QDRANT_API_KEY:-}
       OPENROUTER_API_KEY: ${OPENROUTER_API_KEY}
+      EMBEDDING_API_BASE: ${EMBEDDING_API_BASE:-https://openrouter.ai/api/v1}
+      EMBEDDING_MODEL: ${EMBEDDING_MODEL:-qwen/qwen3-embedding-8b}
+      EMBEDDING_API_KEY: ${EMBEDDING_API_KEY:-}
       EMBEDDING_DIMS: "${EMBEDDING_DIMS:-4096}"
       COLLECTION_NAME: "${COLLECTION_NAME:-knowledge_base}"
       ARQ_JOB_TIMEOUT: "300"

setup.sh

@@ -328,6 +328,9 @@ add_env() {
 add_env "FABRIC_DIR" "${VAULT_PATH}/fabric"
 add_env "ICARUS_EXTRACTION_MAX_TOKENS" "4096"
 add_env "ICARUS_EXTRACTION_MODEL" "deepseek/deepseek-v4-flash"
+add_env "EMBEDDING_API_BASE" "https://openrouter.ai/api/v1"
+add_env "EMBEDDING_MODEL" "qwen/qwen3-embedding-8b"
+add_env "EMBEDDING_API_KEY" ""
 add_env "EMBEDDING_DIMS" "4096"
 add_env "HERMES_AGENT_NAME" "hermes"
 add_env "REDIS_PASSWORD" "${REDIS_PW}"