feat(scheduler): read CF_ORCH_URL env var for coordinator address

Threads coordinator_url from CF_ORCH_URL env var (default localhost:7700)
into the cfcore TaskScheduler so Docker instances can point at
host.docker.internal:7700 instead of the container's own loopback.

Also adds CF_ORCH_URL to compose.test-cfcore.yml and mounts persistent
patched configs (llm.docker.yaml, user.docker.yaml) for the test instance.

compose.test-cfcore.yml

@@ -22,10 +22,14 @@ services:
       - "8516:8501"
     volumes:
       - /devl/job-seeker:/devl/job-seeker
+      - /devl/job-seeker/config:/app/config
+      - /devl/job-seeker/config/llm.docker.yaml:/app/config/llm.yaml:ro
+      - /devl/job-seeker/config/user.docker.yaml:/app/config/user.yaml:ro
     environment:
       - STAGING_DB=/devl/job-seeker/staging.db
       - PYTHONUNBUFFERED=1
       - STREAMLIT_SERVER_BASE_URL_PATH=
+      - CF_ORCH_URL=http://host.docker.internal:7700
     extra_hosts:
       - "host.docker.internal:host-gateway"
     restart: "no"

scripts/task_scheduler.py

@@ -15,6 +15,7 @@ Public API (unchanged — callers do not need to change):
 from __future__ import annotations
 
 import logging
+import os
 import threading
 from pathlib import Path
 from typing import Callable, Optional
@@ -112,6 +113,10 @@ class TaskScheduler(_CoreTaskScheduler):
                     "defaulting to 0.0 GB (unlimited concurrency for this type)", t
                 )
 
+        coordinator_url = os.environ.get(
+            "CF_ORCH_URL", "http://localhost:7700"
+        ).rstrip("/")
+
         super().__init__(
             db_path=db_path,
             run_task_fn=run_task_fn,
@@ -119,6 +124,8 @@ class TaskScheduler(_CoreTaskScheduler):
             vram_budgets=budgets,
             available_vram_gb=available_vram,
             max_queue_depth=max_depth,
+            coordinator_url=coordinator_url,
+            service_name="peregrine",
         )
 
     def enqueue(