ci: stop inheriting the runner's python and node

The runner executes jobs on the host rather than in a container, so a
workflow that says 'python3' or 'npm' is really saying 'whatever this
machine happens to have today'. Both of the test jobs added in c00a472
were red on the first run for exactly that reason.

uv venv with no --python takes the first interpreter it finds, which is
the host's 3.14 here. pyrogram's sync.py calls the bare
asyncio.get_event_loop() that 3.14 no longer auto-creates, so three
tests died at collection. Pinned to 3.13, which is both what uv will
fetch when the host has none and what python:3.13-slim actually builds.

npm was missing outright, and turned up an hour later as npm 12 on node
26 - the same push, minutes apart. Neither is the panel image's
node:22-alpine, so node is now installed from the official tarball the
way the other tools are, at the image's major. npm is checked by running
it rather than by looking it up, so a name that resolves to something
broken reads as not installed.

Renovate keeps NODE_VERSION in step with the Dockerfile's node: tag, and
the two are one grouped dependency: CI that tests on a different major
than it builds on is a gate that can pass over a real break.

renovate/k8s/configmap.yaml

@@ -141,6 +141,14 @@ data:
           "datasourceTemplate": "github-tags",
           "depNameTemplate": "hadolint/hadolint"
         },
+        {
+          "customType": "regex",
+          "description": "node version the ci workflow runs npm with",
+          "managerFilePatterns": ["^\\.gitea/workflows/tool-versions\\.env$"],
+          "matchStrings": ["(?:^|\\n)NODE_VERSION=\"(?<currentValue>[0-9.]+)\""],
+          "datasourceTemplate": "node",
+          "depNameTemplate": "node"
+        },
         {
           "customType": "regex",
           "description": "stakater/reloader chart version pinned in the deploy workflow",
@@ -175,6 +183,13 @@ data:
           "groupName": "renovate self-update",
           "automerge": false
         },
+        {
+          "description": "CI runs npm on the node the panel image is built from - the NODE_VERSION pin in tool-versions.env and node:22-alpine in the Dockerfile are the same dependency and move as one",
+          "matchPackageNames": ["node"],
+          "groupName": "node runtime",
+          "groupSlug": "node",
+          "automerge": false
+        },
         {
           "description": "Helm chart bumps change PVC fields and admission behaviour, keep them reviewable",
           "matchDatasources": ["helm"],

renovate/renovate.json

@@ -130,6 +130,14 @@
       "datasourceTemplate": "github-tags",
       "depNameTemplate": "hadolint/hadolint"
     },
+    {
+      "customType": "regex",
+      "description": "node version the ci workflow runs npm with",
+      "managerFilePatterns": ["^\\.gitea/workflows/tool-versions\\.env$"],
+      "matchStrings": ["(?:^|\\n)NODE_VERSION=\"(?<currentValue>[0-9.]+)\""],
+      "datasourceTemplate": "node",
+      "depNameTemplate": "node"
+    },
     {
       "customType": "regex",
       "description": "stakater/reloader chart version pinned in the deploy workflow",
@@ -164,6 +172,13 @@
       "groupName": "renovate self-update",
       "automerge": false
     },
+    {
+      "description": "CI runs npm on the node the panel image is built from - the NODE_VERSION pin in tool-versions.env and node:22-alpine in the Dockerfile are the same dependency and move as one",
+      "matchPackageNames": ["node"],
+      "groupName": "node runtime",
+      "groupSlug": "node",
+      "automerge": false
+    },
     {
       "description": "Helm chart bumps change PVC fields and admission behaviour, keep them reviewable",
       "matchDatasources": ["helm"],