feat!: standardize base_url for inference

Completes #3732 by removing runtime URL transformations and requiring
users to provide full URLs in configuration. All providers now use
'base_url' consistently and respect the exact URL provided without
appending paths like /v1 or /openai/v1 at runtime.

Add unit test to enforce URL standardization across remote inference providers (verifies all use 'base_url' field with HttpUrl | None type)

BREAKING CHANGE: Users must update configs to include full URL paths
(e.g., http://localhost:11434/v1 instead of http://localhost:11434).

Signed-off-by: Charlie Doern <cdoern@redhat.com>

scripts/docker.sh

@@ -287,9 +287,9 @@ start_container() {
     # On macOS/Windows, use host.docker.internal to reach host from container
     # On Linux with --network host, use localhost
     if [[ "$(uname)" == "Darwin" ]] || [[ "$(uname)" == *"MINGW"* ]]; then
-        OLLAMA_URL="${OLLAMA_URL:-http://host.docker.internal:11434}"
+        OLLAMA_URL="${OLLAMA_URL:-http://host.docker.internal:11434/v1}"
     else
-        OLLAMA_URL="${OLLAMA_URL:-http://localhost:11434}"
+        OLLAMA_URL="${OLLAMA_URL:-http://localhost:11434/v1}"
     fi
     DOCKER_ENV_VARS="$DOCKER_ENV_VARS -e OLLAMA_URL=$OLLAMA_URL"
 

scripts/install.sh

@@ -640,7 +640,7 @@ cmd=( run -d "${PLATFORM_OPTS[@]}" --name llama-stack \
       --network llama-net \
       -p "${PORT}:${PORT}" \
       "${server_env_opts[@]}" \
-      -e OLLAMA_URL="http://ollama-server:${OLLAMA_PORT}" \
+      -e OLLAMA_URL="http://ollama-server:${OLLAMA_PORT}/v1" \
       "${SERVER_IMAGE}" --port "${PORT}")
 
 log "🦙 Starting Llama Stack..."