Initial commit: Gitea code search with MeiliSearch + MCP

Go indexer (full re-index + webhook), MeiliSearch integration,
MCP server exposing gitea_search tool for LLM agents.
K8s manifests for MeiliSearch + indexer CronJob.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

k8s/meilisearch.yaml

@@ -0,0 +1,94 @@
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: meilisearch-data
+  namespace: gitea-search
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: local-path
+  resources:
+    requests:
+      storage: 2Gi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: meilisearch
+  namespace: gitea-search
+  labels:
+    app: meilisearch
+spec:
+  replicas: 1
+  strategy:
+    type: Recreate
+  selector:
+    matchLabels:
+      app: meilisearch
+  template:
+    metadata:
+      labels:
+        app: meilisearch
+    spec:
+      containers:
+        - name: meilisearch
+          image: getmeili/meilisearch:v1.11
+          ports:
+            - containerPort: 7700
+          env:
+            - name: MEILI_ENV
+              value: production
+            - name: MEILI_MASTER_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: meilisearch-secret
+                  key: master-key
+            - name: MEILI_DB_PATH
+              value: /meili_data/data.ms
+          volumeMounts:
+            - name: data
+              mountPath: /meili_data
+          resources:
+            requests:
+              cpu: 100m
+              memory: 256Mi
+            limits:
+              cpu: 500m
+              memory: 512Mi
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: 7700
+            initialDelaySeconds: 10
+            periodSeconds: 30
+          readinessProbe:
+            httpGet:
+              path: /health
+              port: 7700
+            initialDelaySeconds: 5
+            periodSeconds: 10
+      volumes:
+        - name: data
+          persistentVolumeClaim:
+            claimName: meilisearch-data
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: meilisearch
+  namespace: gitea-search
+spec:
+  selector:
+    app: meilisearch
+  ports:
+    - port: 7700
+      targetPort: 7700
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: meilisearch-secret
+  namespace: gitea-search
+type: Opaque
+stringData:
+  master-key: "CHANGE-ME-generate-with-openssl-rand-base64-32"