Remove legacy configuration machinery

internal/core/config/config.go

@@ -4,8 +4,6 @@ import (
 	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
 )
 
-const SupportedFileConfigVersion = 4
-
 type Config struct {
 	PromptKit   PromptKitConfig                     `json:"promptkit,omitempty"`
 	Pipelines   map[string]pipeline.PipelineProfile `json:"pipelines"`
@@ -29,9 +27,6 @@ type PromptKitLocalBackendConfig struct {
 type ConcurrencyConfig struct {
 	TotalLLM     int            `json:"total_llm"`
 	StageWorkers map[string]int `json:"stage_workers"`
-
-	extractWorkersConfigured bool
-	defaultedExtractWorkers  int
 }
 
 const defaultLLMConcurrency = 16
@@ -62,9 +57,8 @@ func Default() Config {
 	return Config{
 		Pipelines: map[string]pipeline.PipelineProfile{},
 		Concurrency: ConcurrencyConfig{
-			TotalLLM:                defaultLLMConcurrency,
-			StageWorkers:            map[string]int{"extract": defaultLLMConcurrency},
-			defaultedExtractWorkers: defaultLLMConcurrency,
+			TotalLLM:     defaultLLMConcurrency,
+			StageWorkers: map[string]int{"extract": defaultLLMConcurrency},
 		},
 		Output: OutputConfig{Directory: "./notarius-output"},
 		Cache:  CacheConfig{ChunkPlans: ChunkPlanCacheConfig{Mode: pipeline.ChunkCacheAuto}},
@@ -97,21 +91,15 @@ func cloneIntMap(in map[string]int) map[string]int {
 	return out
 }
 
-func (c *ConcurrencyConfig) recomputeStageWorkerDefaults() {
-	if c == nil {
-		return
-	}
-	if c.StageWorkers == nil {
-		c.StageWorkers = make(map[string]int)
-	}
-	if !c.extractWorkersConfigured {
-		if value, ok := c.StageWorkers["extract"]; ok && (c.defaultedExtractWorkers == 0 || value != c.defaultedExtractWorkers) {
-			c.extractWorkersConfigured = true
-			return
+func (c Config) withDerivedStageWorkers() Config {
+	c = cloneConfig(c)
+	if _, exists := c.Concurrency.StageWorkers["extract"]; !exists {
+		if c.Concurrency.StageWorkers == nil {
+			c.Concurrency.StageWorkers = make(map[string]int)
 		}
-		c.StageWorkers["extract"] = c.TotalLLM
-		c.defaultedExtractWorkers = c.TotalLLM
+		c.Concurrency.StageWorkers["extract"] = c.Concurrency.TotalLLM
 	}
+	return c
 }
 
 func clonePipelineProfile(in pipeline.PipelineProfile) pipeline.PipelineProfile {