feat: initialize project structure with SQLite database, crawler framework, and LLM-based JD analysis integration

internal/filter/filter.go

@@ -0,0 +1,34 @@
+package filter
+
+import "context"
+
+type FilterResult struct {
+	Keep   bool
+	Score  float64
+	Reason string
+}
+
+type JobFilter interface {
+	Name() string
+	Process(ctx context.Context, title, rawContent string) (FilterResult, error)
+}
+
+type FilterPipeline struct {
+	filters []JobFilter
+}
+
+func NewPipeline(filters ...JobFilter) *FilterPipeline {
+	return &FilterPipeline{filters: filters}
+}
+
+func (p *FilterPipeline) Execute(ctx context.Context, title, rawContent string) (bool, float64) {
+	var totalScore float64
+	for _, f := range p.filters {
+		res, err := f.Process(ctx, title, rawContent)
+		if err != nil || !res.Keep {
+			return false, 0
+		}
+		totalScore += res.Score
+	}
+	return true, totalScore
+}