P18: fix #135 #136 #140 — coredns gen, notebook endpoints, dashboard

- gen_coredns.py: generates hosts + Corefile from stack.toml
  [platform].domain and [platform].host_ip
- notebooks: nessie/polaris/sql_generator use cfg.services.*
  instead of hardcoded URLs
- #140: dashboard already derives domain from location.hostname
  via JS — no hardcoded URLs in HTML, only in comments

coredns/hosts

@@ -5,6 +5,13 @@
 192.168.1.192 notebooks.homelab.fhirworx.io
 192.168.1.192 api.homelab.fhirworx.io
 192.168.1.192 s3.homelab.fhirworx.io
+192.168.1.192 s3console.homelab.fhirworx.io
 192.168.1.192 grafana.homelab.fhirworx.io
 192.168.1.192 traefik.homelab.fhirworx.io
 192.168.1.192 zotero.homelab.fhirworx.io
+192.168.1.192 nessie.homelab.fhirworx.io
+192.168.1.192 polaris.homelab.fhirworx.io
+192.168.1.192 trino.homelab.fhirworx.io
+192.168.1.192 prometheus.homelab.fhirworx.io
+192.168.1.192 jaeger.homelab.fhirworx.io
+192.168.1.192 loki.homelab.fhirworx.io

dev/scripts/gen_coredns.py

@@ -0,0 +1,67 @@
+"""Generate coredns/hosts and coredns/Corefile from stack.toml.
+
+Usage::
+
+    uv run python dev/scripts/gen_coredns.py
+"""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+from conf import ROOT, cfg
+
+SUBDOMAINS = [
+    "",  # bare domain
+    "gitea",
+    "ci",
+    "docs",
+    "notebooks",
+    "api",
+    "s3",
+    "s3console",
+    "grafana",
+    "traefik",
+    "zotero",
+    "nessie",
+    "polaris",
+    "trino",
+    "prometheus",
+    "jaeger",
+    "loki",
+]
+
+OUT_DIR = ROOT / "coredns"
+
+
+def generate() -> None:
+    domain = cfg.platform.domain
+    host_ip = cfg.platform.host_ip
+
+    # hosts file
+    lines = []
+    for sub in SUBDOMAINS:
+        fqdn = f"{sub}.{domain}" if sub else domain
+        lines.append(f"{host_ip} {fqdn}")
+    (OUT_DIR / "hosts").write_text("\n".join(lines) + "\n")
+
+    # Corefile
+    corefile = f"""{domain} {{
+    hosts /etc/coredns/hosts {{
+        fallthrough
+    }}
+    log
+}}
+
+. {{
+    forward . 1.1.1.1 8.8.8.8
+    cache 300
+}}
+"""
+    (OUT_DIR / "Corefile").write_text(corefile)
+
+    print(f"Generated coredns/hosts ({len(SUBDOMAINS)} entries) and coredns/Corefile")
+
+
+if __name__ == "__main__":
+    generate()

notebooks/nessie_tutorial.py

@@ -22,7 +22,9 @@ def _():
     import requests
     import json
 
-    NESSIE_API = "http://nessie:19120/api/v2"
+    from conf import cfg
+
+    NESSIE_API = f"{cfg.services.nessie}/api/v2"
     return NESSIE_API, json, requests
 
 

notebooks/polaris_tutorial.py

@@ -24,7 +24,9 @@ def _():
     import json
     import os
 
-    POLARIS_API = "http://polaris:8181"
+    from conf import cfg
+
+    POLARIS_API = cfg.services.polaris
     CLIENT_ID = "root"
     CLIENT_SECRET = os.environ.get("POLARIS_ROOT_SECRET", "polaris_root_secret")
     return POLARIS_API, CLIENT_ID, CLIENT_SECRET, json, requests, os
@@ -123,7 +125,7 @@ def _(POLARIS_API, headers, json, requests):
                 "allowedLocations": ["s3://polaris/", "s3://lakehouse/"],
                 "s3": {
                     "region": "us-east-1",
-                    "endpoint": "http://rustfs:9000",
+                    "endpoint": cfg.services.rustfs,
                     "pathStyleAccess": True
                 }
             }

notebooks/sql_generator.py

@@ -30,9 +30,10 @@ def _(mo):
 @app.cell(hide_code=True)
 def _():
     from aco.lake.transpile import transpile
+    from conf import cfg
 
     DIALECT = "databricks"
-    CATALOG = "homelab"
+    CATALOG = cfg.platform.repo.split("/")[0]  # "homelab"
 
     def run_transpile(pipeline, label):
         """Transpile a pipeline and return formatted SQL."""