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>

Dockerfile

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+FROM golang:1.22-alpine AS builder
+
+RUN apk add --no-cache git
+
+WORKDIR /build
+COPY go.mod go.sum ./
+RUN go mod download
+
+COPY . .
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /indexer ./cmd/indexer
+RUN CGO_ENABLED=0 GOOS=linux go build -ldflags="-s -w" -o /mcp-server ./cmd/mcp-server
+
+# --- Indexer image (includes git for cloning) ---
+FROM alpine:3.20 AS indexer
+
+RUN apk add --no-cache git ca-certificates
+COPY --from=builder /indexer /usr/local/bin/indexer
+ENTRYPOINT ["indexer"]
+
+# --- MCP server image (minimal) ---
+FROM alpine:3.20 AS mcp-server
+
+RUN apk add --no-cache ca-certificates
+COPY --from=builder /mcp-server /usr/local/bin/mcp-server
+ENTRYPOINT ["mcp-server"]