feat(stt): recherche web (SearXNG in-cluster) + fix cluster_status (#49)

Phase 2 d'Asa agentique : nouvel outil web_search adossé à un SearXNG
self-host in-cluster, + correction du faux positif de cluster_status.

- SearXNG (k8s/apps/searxng/) : Deployment + Service + ConfigMap settings.yml
  + IngressRoute searxng.lab.local, Application ArgoCD. Namespace ai, interne
  (l'outil tape http://searxng:8080). use_default_settings + search.formats
  inclut json (sinon API JSON 403) ; limiter/image_proxy off ; image pinnée ;
  conf copiée dans un emptyDir via initContainer (contourne le mount RO) ;
  PodSecurity restricted.
- Outil web_search (tools._web_search) ajouté au contexte asa + STT_SEARXNG_URL.
- fix(cluster_status) : les pods de CronJob TERMINÉS (Succeeded/Failed, ex.
  sacrifice-assign-renfort) comptaient comme « non prêts » → fausse alarme.
  Join kube_pod_status_phase{phase=~"Running |Pending"} (3 faux positifs → 0,
  validé in-cluster).
- Serveur 0.8.0 ; doc stt.md + journal mis à jour.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

k8s/apps-of-apps/apps/searxng.yaml

@@ -0,0 +1,24 @@
+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: searxng
+  namespace: argocd
+  finalizers:
+    - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  source:
+    repoURL: git@github.com:Alkatrazz24/Funk-lab.git
+    targetRevision: main
+    path: k8s/apps/searxng
+    directory:
+      recurse: true
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: ai
+  syncPolicy:
+    automated:
+      prune: true
+      selfHeal: true
+    syncOptions:
+      - CreateNamespace=true

k8s/apps/searxng/configmap.yaml

@@ -0,0 +1,29 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: searxng-settings
+  namespace: ai
+data:
+  # SearXNG hérite de ses défauts (tous les moteurs) via use_default_settings, puis on
+  # surcharge le strict nécessaire. CRITIQUE : `search.formats` doit inclure `json` — sinon
+  # l'API JSON (utilisée par l'outil web_search d'Asa) renvoie 403. Instance INTERNE au
+  # cluster (pas d'Ingress WAN) : limiter/botdetection off, image_proxy off.
+  settings.yml: |
+    use_default_settings: true
+    general:
+      instance_name: "Funk SearXNG"
+      debug: false
+    server:
+      # secret_key d'une instance INTERNE (HMAC image-proxy, ici désactivé) — sensibilité
+      # faible. Déplaçable vers un Secret + SEARXNG_SECRET plus tard si besoin.
+      secret_key: "3c7090f1caa8fb060ad99e432fd9523aa8dacbfb134438ff02afbddf6cf350ad"
+      limiter: false
+      image_proxy: false
+    search:
+      formats:
+        - html
+        - json
+      safe_search: 0
+      autocomplete: ""
+    ui:
+      static_use_hash: true

k8s/apps/searxng/deployment.yaml

@@ -0,0 +1,82 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: searxng
+  namespace: ai
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: searxng
+  template:
+    metadata:
+      labels:
+        app: searxng
+      annotations:
+        # Redéploie le pod quand settings.yml change (le hash bouge → nouveau rollout).
+        checksum/config: "searxng-settings-v1"
+    spec:
+      # Conformité PodSecurity "restricted" (namespace ai). L'image tourne en uid 977 (searxng).
+      # fsGroup 977 → l'emptyDir /etc/searxng est accessible en écriture par l'init + le main.
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 977
+        runAsGroup: 977
+        fsGroup: 977
+        seccompProfile:
+          type: RuntimeDefault
+      # Copie settings.yml (ConfigMap RO) dans un emptyDir inscriptible → évite les soucis
+      # de mount RO de l'entrypoint searxng (chown/sed éventuels sur le fichier de conf).
+      initContainers:
+        - name: copy-config
+          image: docker.io/searxng/searxng:2026.6.22-952896d29
+          command: ["sh", "-c", "cp /config-src/settings.yml /etc/searxng/settings.yml"]
+          securityContext:
+            allowPrivilegeEscalation: false
+            capabilities:
+              drop: ["ALL"]
+          volumeMounts:
+            - name: config-src
+              mountPath: /config-src
+              readOnly: true
+            - name: config
+              mountPath: /etc/searxng
+      containers:
+        - name: searxng
+          image: docker.io/searxng/searxng:2026.6.22-952896d29
+          securityContext:
+            allowPrivilegeEscalation: false
+            capabilities:
+              drop: ["ALL"]
+          ports:
+            - containerPort: 8080
+          env:
+            # Base URL interne (pas d'exposition WAN). Requis par SearXNG pour générer ses liens.
+            - name: SEARXNG_BASE_URL
+              value: "http://searxng.lab.local/"
+          volumeMounts:
+            - name: config
+              mountPath: /etc/searxng
+          readinessProbe:
+            tcpSocket:
+              port: 8080
+            initialDelaySeconds: 5
+            periodSeconds: 10
+          livenessProbe:
+            tcpSocket:
+              port: 8080
+            initialDelaySeconds: 15
+            periodSeconds: 20
+          resources:
+            requests:
+              cpu: 100m
+              memory: 192Mi
+            limits:
+              cpu: "1"
+              memory: 512Mi
+      volumes:
+        - name: config-src
+          configMap:
+            name: searxng-settings
+        - name: config
+          emptyDir: {}

k8s/apps/searxng/ingress.yaml

@@ -0,0 +1,16 @@
+# Exposition LAN facultative (debug / usage manuel du méta-moteur). L'outil web_search
+# d'Asa, lui, tape le Service in-cluster directement (http://searxng:8080).
+apiVersion: traefik.io/v1alpha1
+kind: IngressRoute
+metadata:
+  name: searxng
+  namespace: ai
+spec:
+  entryPoints:
+    - web
+  routes:
+    - match: Host(`searxng.lab.local`)
+      kind: Rule
+      services:
+        - name: searxng
+          port: 8080

k8s/apps/searxng/service.yaml

@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: searxng
+  namespace: ai
+spec:
+  selector:
+    app: searxng
+  ports:
+    - port: 8080
+      targetPort: 8080

k8s/apps/stt/deployment.yaml

@@ -56,6 +56,9 @@ spec:
             # live du homelab et la doc d'elle-même. « funk » (RAG strict) reste sélectionnable.
             - name: STT_DEFAULT_CONTEXT
               value: "asa"
+            # Recherche web (outil web_search du contexte asa) → SearXNG in-cluster (ns ai).
+            - name: STT_SEARXNG_URL
+              value: "http://searxng:8080"
             - name: STT_PROMETHEUS_URL
               value: "http://kube-prometheus-stack-prometheus.monitoring:9090"
             - name: STT_ALERTMANAGER_URL