Add WHOOSH search service with BACKBEAT integration

Complete implementation:
- Go-based search service with PostgreSQL and Redis backend
- BACKBEAT SDK integration for beat-aware search operations
- Docker containerization with multi-stage builds
- Comprehensive API endpoints for project analysis and search
- Database migrations and schema management
- GITEA integration for repository management
- Team composition analysis and recommendations

Key features:
- Beat-synchronized search operations with timing coordination
- Phase-based operation tracking (started → querying → ranking → completed)
- Docker Swarm deployment configuration
- Health checks and monitoring
- Secure configuration with environment variables

Architecture:
- Microservice design with clean API boundaries
- Background processing for long-running analysis
- Modular internal structure with proper separation of concerns
- Integration with CHORUS ecosystem via BACKBEAT timing

🤖 Generated with [Claude Code](https://claude.ai/code)

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

Dockerfile

@@ -0,0 +1,66 @@
+FROM golang:1.22-alpine AS builder
+
+# Install build dependencies
+RUN apk add --no-cache git ca-certificates tzdata
+
+# Set working directory
+WORKDIR /app
+
+# Copy go mod files and vendor directory first for better caching
+COPY go.mod go.sum ./
+COPY vendor/ vendor/
+
+# Use vendor mode instead of downloading dependencies
+# RUN go mod download && go mod verify
+
+# Copy source code
+COPY . .
+
+# Build with optimizations and version info
+ARG VERSION=v0.1.0-mvp
+ARG COMMIT_HASH
+ARG BUILD_DATE
+RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build \
+    -mod=vendor \
+    -ldflags="-w -s -X main.version=${VERSION} -X main.commitHash=${COMMIT_HASH} -X main.buildDate=${BUILD_DATE}" \
+    -a -installsuffix cgo \
+    -o whoosh ./cmd/whoosh
+
+# Final stage - minimal security-focused image
+FROM scratch
+
+# Copy timezone data and certificates from builder
+COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+
+# Copy passwd and group for non-root user
+COPY --from=builder /etc/passwd /etc/passwd
+COPY --from=builder /etc/group /etc/group
+
+# Create app directory structure
+WORKDIR /app
+
+# Copy application binary and migrations
+COPY --from=builder --chown=65534:65534 /app/whoosh /app/whoosh
+COPY --from=builder --chown=65534:65534 /app/migrations /app/migrations
+
+# Use nobody user (UID 65534)
+USER 65534:65534
+
+# Expose port
+EXPOSE 8080
+
+# Health check using the binary itself
+HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
+    CMD ["/app/whoosh", "--health-check"]
+
+# Set metadata
+LABEL maintainer="CHORUS Ecosystem" \
+      description="WHOOSH - Autonomous AI Development Teams" \
+      org.opencontainers.image.title="WHOOSH" \
+      org.opencontainers.image.description="Orchestration platform for autonomous AI development teams" \
+      org.opencontainers.image.vendor="CHORUS Services"
+
+# Run the application
+ENTRYPOINT ["/app/whoosh"]
+CMD []