Let Headplane start, and read Headscale's version for its tools

Headplane 0.7.1 refuses a config with a kubernetes block that has no pod_name,
even when the integration is off, so the disabled block is gone. The headscale
image has no version label, so the running version now comes from
`headscale version`, and 0.29.3 is recorded as verified for the Headscale
tools after running each of them against a live install.

Assisted-by: Claude Opus 5 <noreply@anthropic.com>

containers/headscale/resources/headplane.yaml

@@ -27,13 +27,12 @@ headscale:
   config_path: "/etc/headscale/config.yaml"
 
 # No Docker socket, agent or process integration: Headplane only talks to
-# Headscale's API.
+# Headscale's API. (No kubernetes block: once present, Headplane 0.7.1 requires
+# its pod_name even when disabled, and refuses to start.)
 integration:
   agent:
     enabled: false
   docker:
     enabled: false
-  kubernetes:
-    enabled: false
   proc:
     enabled: false

containers/headscale/scripts/headscale_version.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# The running Headscale version, for tool compatibility
+# (scripts/app/app_compat.sh). The headscale image carries no version label, so
+# ask the binary.
+headscale_detected_version()
+{
+    runFileOp timeout 15 docker exec headscale-service headscale version -o json 2>/dev/null \
+        | jq -r '.version // empty' 2>/dev/null | head -1
+}

containers/headscale/tools/headscale.tools.json

@@ -1,5 +1,5 @@
 {
-  "compat": { "range": ">=0.29.0 <0.30.0", "verified": [] },
+  "compat": { "range": ">=0.29.0 <0.30.0", "verified": ["0.29.3"] },
   "tools": [
     {
       "id":          "create_user",

scripts/source/files/arrays/function_manifest.sh

@@ -606,6 +606,7 @@ declare -gA LP_FN_MAP=(
     [grafana_install_pre]="grafana/scripts/grafana_install_hooks.sh"
     [hashPassword]="config/password/password_hash.sh"
     [_headscaleCli]="headscale/scripts/headscale_cli.sh"
+    [headscale_detected_version]="headscale/scripts/headscale_version.sh"
     [headscale_install_post_compose]="headscale/scripts/headscale_install_hooks.sh"
     [headscale_install_post_start]="headscale/scripts/headscale_install_hooks.sh"
     [_headscalePortUrl]="headscale/scripts/headscale_install_hooks.sh"
@@ -2020,6 +2021,7 @@ declare -gA LP_FN_ROOT=(
     [grafana_install_pre]="containers"
     [hashPassword]="scripts"
     [_headscaleCli]="containers"
+    [headscale_detected_version]="containers"
     [headscale_install_post_compose]="containers"
     [headscale_install_post_start]="containers"
     [_headscalePortUrl]="containers"
@@ -3474,6 +3476,7 @@ grafana_install_post_start() { unset -f grafana_install_post_start; __lpAutoload
 grafana_install_pre() { unset -f grafana_install_pre; __lpAutoload "${install_containers_dir}grafana/scripts/grafana_install_hooks.sh"; grafana_install_pre "$@"; }
 hashPassword() { unset -f hashPassword; __lpAutoload "${install_scripts_dir}config/password/password_hash.sh"; hashPassword "$@"; }
 _headscaleCli() { unset -f _headscaleCli; __lpAutoload "${install_containers_dir}headscale/scripts/headscale_cli.sh"; _headscaleCli "$@"; }
+headscale_detected_version() { unset -f headscale_detected_version; __lpAutoload "${install_containers_dir}headscale/scripts/headscale_version.sh"; headscale_detected_version "$@"; }
 headscale_install_post_compose() { unset -f headscale_install_post_compose; __lpAutoload "${install_containers_dir}headscale/scripts/headscale_install_hooks.sh"; headscale_install_post_compose "$@"; }
 headscale_install_post_start() { unset -f headscale_install_post_start; __lpAutoload "${install_containers_dir}headscale/scripts/headscale_install_hooks.sh"; headscale_install_post_start "$@"; }
 _headscalePortUrl() { unset -f _headscalePortUrl; __lpAutoload "${install_containers_dir}headscale/scripts/headscale_install_hooks.sh"; _headscalePortUrl "$@"; }