Please address the comments from this code review:

## Overall Comments
- Consider having `Build` return `(Detector, error)` and validating that all required dependencies (e.g., `clusterID`, `enforcer`, stores, label providers) are set, rather than silently constructing a `detectorImpl` with nil fields.
- Now that `ClusterIDProvider` is exported and used as part of the builder’s public API, it may be worth adding clarification (in comments or type naming) about whether `Get` vs `GetNoWait` have any ordering/initialization guarantees that callers must respect.
- If the longer-term plan is to introduce a `StoreProvider` to simplify the builder, you might want to leave a TODO near the multiple `With*Store` methods in `builder.go` to capture that intended follow-up refactor in context.

## Individual Comments

### Comment 1
<location path="sensor/common/detector/builder.go" line_range="118-119" />
<code_context>
+	return b
+}
+
+// Build creates a new Detector from the builder configuration.
+func (b *Builder) Build() Detector {
+	detectorStopper := concurrency.NewStopper()
+	netFlowQueueSize := queueScaler.ScaleSizeOnNonDefault(env.DetectorNetworkFlowBufferSize)
</code_context>
<issue_to_address>
**suggestion (bug_risk):** Consider validating required fields in Build (and/or returning an error) instead of silently constructing with possible nil dependencies.

With the builder pattern, a `Detector` can now be built without setting critical dependencies (`clusterID`, `enforcer`, stores, label providers, etc.), leaving them nil and causing hard-to-trace panics later. Please make `Build` validate required fields—either by returning `(Detector, error)` on missing dependencies or by panicking with a clear message—so misconfiguration fails fast at construction time.

Suggested implementation:

```golang
 // Build creates a new Detector from the builder configuration.
func (b *Builder) Build() Detector {
	// Fail fast on misconfiguration: ensure required dependencies are set.
	if b.clusterLabelProvider == nil {
		panic("detector.Builder.Build: clusterLabelProvider must be set; call WithClusterLabelProvider before Build")
	}
	if b.namespaceLabelProvider == nil {
		panic("detector.Builder.Build: namespaceLabelProvider must be set; call WithNamespaceLabelProvider before Build")
	}

	detectorStopper := concurrency.NewStopper()
	netFlowQueueSize := queueScaler.ScaleSizeOnNonDefault(env.DetectorNetworkFlowBufferSize)

```

You should apply the same pattern to all other required `Builder` fields that are not visible in this snippet (for example `clusterID`, `enforcer`, and the various stores). At the top of `Build`, add `nil` / empty checks for each such field and panic with a clear, actionable message (e.g. `"detector.Builder.Build: enforcer must be set; call WithEnforcer before Build"`). This keeps the `Build` signature unchanged while ensuring misconfiguration fails fast with an obvious error.
</issue_to_address>