add hetzner-server-type-location-update flow and document it in README

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -8,6 +8,7 @@ Aktuell enthalten:
 * `build_select_options.py`
 * `linux_apt-upgrade.yaml`
 * `hetzner-vm-provision.yaml`
+* `hetzner-server-type-location-update.yaml`
 * `.env.example`
 
 Der erste Flow scannt mehrere Docker-Hosts per SSH, sucht nach Docker-Compose-Stacks und schreibt daraus eine Dropdown-Liste in den Kestra KV-Store.
@@ -138,6 +139,40 @@ OPENAI_API_KEY
 
 ---
 
+### `hetzner-server-type-location-update.yaml`
+
+Kestra-Flow zum automatischen Aktualisieren der verfügbaren Hetzner Server-Typen und Standorte.
+
+**Namespace:** `hetzner`  
+**Trigger:** Alle 15 Minuten, täglich 07:00–21:00 Uhr (Europe/Berlin)
+
+Der Flow:
+
+1. **Hetzner API abfragen** — ruft die aktuellen Server-Typen (`cx23`, `cx33`, `cpx42`) und deren verfügbare Standorte (`nbg1`, `fsn1`, `hel1`) ab
+2. **Dropdown-Matrix bauen** — erzeugt eine kombinierte Server-Type/Location-Liste im Format `cx23|nbg1`
+3. **MinIO/S3 Upload** — schreibt beide JSON-Dateien ins S3-Backend unter `inventory/`
+4. **KV-Store setzen** — speichert die Dropdown-Optionen unter dem Key `hetzner_server_type_location_options`
+
+Ausgaben:
+
+| Ziel | Pfad / Key |
+|---|---|
+| S3 | `inventory/hetzner-server-types.json` |
+| S3 | `inventory/hetzner-server-type-location-options.json` |
+| KV-Store | `hetzner_server_type_location_options` |
+
+Benötigte Kestra Secrets:
+
+```text
+HCLOUD_TOKEN
+AWS_ACCESS_KEY_ID
+AWS_SECRET_ACCESS_KEY
+TF_BACKEND_BUCKET
+TF_BACKEND_ENDPOINT
+```
+
+---
+
 ### `.env.example`
 
 Beispiel-Datei für benötigte Umgebungsvariablen und Secrets.

hetzner-server-type-location-update.yaml

@@ -0,0 +1,102 @@
+id: hetzner-server-type-location-update
+namespace: hetzner
+
+triggers:
+  - id: every-15-minutes-daytime
+    type: io.kestra.plugin.core.trigger.Schedule
+    cron: "*/15 7-21 * * *"
+    timezone: Europe/Berlin
+
+
+tasks:
+  - id: fetch_server_types
+    type: io.kestra.plugin.scripts.shell.Commands
+    containerImage: alpine:latest
+    env:
+      HCLOUD_TOKEN: "{{ secret('HCLOUD_TOKEN') }}"
+    beforeCommands:
+      - apk add --no-cache curl jq
+    commands:
+      - |
+        set -eo pipefail
+
+        curl -sS \
+          -H "Authorization: Bearer $HCLOUD_TOKEN" \
+          "https://api.hetzner.cloud/v1/server_types" \
+          | jq -c '
+              [
+                .server_types[]
+                | select(.name == "cx23" or .name == "cx33" or .name == "cpx42")
+                | {
+                    name: .name,
+                    description: .description,
+                    cores: .cores,
+                    memory: .memory,
+                    disk: .disk,
+                    locations: [
+                      .prices[]
+                      | select(.location == "nbg1" or .location == "fsn1" or .location == "hel1")
+                      | .location
+                    ] | unique
+                  }
+              ]
+            ' > hetzner-server-types.json
+
+        jq -c '
+          [
+            .[]
+            | .name as $type
+            | .locations[]
+            | "\($type)|\(.)"
+          ]
+        ' hetzner-server-types.json > hetzner-server-type-location-options.json
+
+        echo "Server-Type/Location Matrix:"
+        cat hetzner-server-types.json
+
+        echo "Dropdown-Optionen:"
+        cat hetzner-server-type-location-options.json
+
+    outputFiles:
+      - hetzner-server-types.json
+      - hetzner-server-type-location-options.json
+
+  - id: upload_to_minio
+    type: io.kestra.plugin.scripts.shell.Commands
+    containerImage: minio/mc:latest
+    env:
+      AWS_ACCESS_KEY_ID: "{{ secret('AWS_ACCESS_KEY_ID') }}"
+      AWS_SECRET_ACCESS_KEY: "{{ secret('AWS_SECRET_ACCESS_KEY') }}"
+      TF_BACKEND_BUCKET: "{{ secret('TF_BACKEND_BUCKET') }}"
+      TF_BACKEND_ENDPOINT: "{{ secret('TF_BACKEND_ENDPOINT') }}"
+    inputFiles:
+      hetzner-server-types.json: "{{ outputs.fetch_server_types.outputFiles['hetzner-server-types.json'] }}"
+      hetzner-server-type-location-options.json: "{{ outputs.fetch_server_types.outputFiles['hetzner-server-type-location-options.json'] }}"
+    commands:
+      - |
+        set -eo pipefail
+
+        mc alias set tfstate "$TF_BACKEND_ENDPOINT" "$AWS_ACCESS_KEY_ID" "$AWS_SECRET_ACCESS_KEY"
+
+        mc cp hetzner-server-types.json "tfstate/$TF_BACKEND_BUCKET/inventory/hetzner-server-types.json"
+        mc cp hetzner-server-type-location-options.json "tfstate/$TF_BACKEND_BUCKET/inventory/hetzner-server-type-location-options.json"
+
+        echo "Server-Type/Location-Liste wurde nach MinIO/S3 geschrieben."
+
+  - id: set_options_kv
+    type: io.kestra.plugin.core.kv.Set
+    key: hetzner_server_type_location_options
+    kvType: JSON
+    value: "{{ read(outputs.fetch_server_types.outputFiles['hetzner-server-type-location-options.json']) }}"
+
+  - id: log_result
+    type: io.kestra.plugin.core.log.Log
+    message: |
+      ✅ Hetzner Server-Type/Location-Liste wurde aktualisiert.
+
+      MinIO/S3:
+      s3://{{ secret('TF_BACKEND_BUCKET') }}/inventory/hetzner-server-types.json
+      s3://{{ secret('TF_BACKEND_BUCKET') }}/inventory/hetzner-server-type-location-options.json
+
+      Kestra KV:
+      hetzner_server_type_location_options