Remove SearXNG search backend, use Firecrawl exclusively

SearXNG was a fallback search backend that added complexity without
being used in practice. All search-dependent features (web search,
government DB checks, vetting orchestrator, tracker mapping) now use
Firecrawl exclusively. Removes the SEARCH_ENDPOINT config plumbing
from probodconfig, bootstrap, Helm charts, and all callers.

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

pkg/bootstrap/builder.go

@@ -176,7 +176,6 @@ func (b *Builder) Build() (*probodconfig.FullConfig, error) {
 					CacheTTL:       b.getEnvIntOrDefault("WEBHOOK_CACHE_TTL", 86400),
 				},
 			},
-			SearchEndpoint: b.getEnv("SEARCH_ENDPOINT"),
 			Firecrawl: probodconfig.FirecrawlConfig{
 				Endpoint: b.getEnv("FIRECRAWL_ENDPOINT"),
 				APIKey:   b.getEnv("FIRECRAWL_API_KEY"),

pkg/bootstrap/builder_test.go

@@ -197,8 +197,7 @@ func TestBuilder_Build_Defaults(t *testing.T) {
 	assert.Equal(t, 5, cfg.Probod.Notifications.Webhook.SenderInterval)
 	assert.Equal(t, 86400, cfg.Probod.Notifications.Webhook.CacheTTL)
 
-	// Search and Firecrawl — empty by default
-	assert.Empty(t, cfg.Probod.SearchEndpoint)
+	// Firecrawl — empty by default
 	assert.Empty(t, cfg.Probod.Firecrawl.Endpoint)
 	assert.Empty(t, cfg.Probod.Firecrawl.APIKey)
 
@@ -294,8 +293,7 @@ func TestBuilder_Build_CustomValues(t *testing.T) {
 	env["WEBHOOK_SENDER_INTERVAL"] = "10"
 	env["WEBHOOK_CACHE_TTL"] = "3600"
 	env["CONNECTOR_SLACK_SIGNING_SECRET"] = "slack-signing-secret"
-	// Search and Firecrawl
-	env["SEARCH_ENDPOINT"] = "https://search.example.com"
+	// Firecrawl
 	env["FIRECRAWL_ENDPOINT"] = "https://api.firecrawl.dev/v2"
 	env["FIRECRAWL_API_KEY"] = "fc-test-key"
 	// Agents — providers
@@ -382,8 +380,7 @@ func TestBuilder_Build_CustomValues(t *testing.T) {
 	assert.Equal(t, "slack-signing-secret", cfg.Probod.Notifications.Slack.SigningSecret)
 	assert.Equal(t, 10, cfg.Probod.Notifications.Webhook.SenderInterval)
 	assert.Equal(t, 3600, cfg.Probod.Notifications.Webhook.CacheTTL)
-	// Search and Firecrawl
-	assert.Equal(t, "https://search.example.com", cfg.Probod.SearchEndpoint)
+	// Firecrawl
 	assert.Equal(t, "https://api.firecrawl.dev/v2", cfg.Probod.Firecrawl.Endpoint)
 	assert.Equal(t, "fc-test-key", cfg.Probod.Firecrawl.APIKey)
 	// Agents — providers