Propagate firecrawl and tracker-mapping config to bootstrap and Helm

Group firecrawl-endpoint and firecrawl-api-key under a nested firecrawl
config key. Add env var mappings (FIRECRAWL_ENDPOINT, FIRECRAWL_API_KEY,
SEARCH_ENDPOINT, AGENT_TRACKER_MAPPING_*) to the bootstrap builder with
test coverage. Wire the new values through the Helm chart (values,
deployment, secret, production example).

Signed-off-by: Émile Ré <emile@probo.com>

pkg/probod/tracker_mapping.go

@@ -48,7 +48,7 @@ func (impl *Implm) buildTrackerMappingConfig(
 		LLMClient:         llmClient,
 		Model:             agentCfg.ModelName,
 		SearchEndpoint:    impl.cfg.SearchEndpoint,
-		FirecrawlEndpoint: impl.cfg.FirecrawlEndpoint,
-		FirecrawlAPIKey:   impl.cfg.FirecrawlAPIKey,
+		FirecrawlEndpoint: impl.cfg.Firecrawl.Endpoint,
+		FirecrawlAPIKey:   impl.cfg.Firecrawl.APIKey,
 	}, nil
 }