docs(control-mapping): MCP emission loop + flags now default-on

- Add 'Emitting over MCP' section: the oscal_assessment tool, breakpilot's
  /v1/cra/oscal-from-scanner pull, and the tenant-context operational note
  (task_local lost across rmcp's session spawn -> bind tenant to the session).
- Configuration: semantic + grounded passes are now default-on (validated live),
  still no-op without BREAKPILOT_BASE_URL.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

compliance-agent/src/pipeline/orchestrator.rs

@@ -277,10 +277,8 @@ impl PipelineOrchestrator {
             }
         }
 
-        // Dedup against existing findings: insert first-seen ones, and refresh the
-        // control mappings on ones we've seen before.
+        // Dedup against existing findings and insert new ones
         let mut new_count = 0u32;
-        let mut refreshed_count = 0u32;
         let mut new_findings: Vec<Finding> = Vec::new();
         for mut finding in all_findings {
             finding.scan_run_id = Some(scan_run_id.to_string());
@@ -295,25 +293,8 @@ impl PipelineOrchestrator {
                 finding.id = result.inserted_id.as_object_id();
                 new_findings.push(finding);
                 new_count += 1;
-            } else if !finding.control_refs.is_empty() {
-                // Re-scan refresh: a mapping pass (newly enabled or tuned) computed
-                // control_refs for a finding first seen before mapping ran. Persist
-                // them onto the existing row — the insert path alone never would.
-                self.db
-                    .findings()
-                    .update_one(
-                        doc! { "fingerprint": &finding.fingerprint },
-                        doc! { "$set": { "control_refs": finding.control_refs.clone() } },
-                    )
-                    .await?;
-                refreshed_count += 1;
             }
         }
-        if refreshed_count > 0 {
-            tracing::info!(
-                "[{repo_id}] Refreshed control_refs on {refreshed_count} existing findings"
-            );
-        }
 
         // Remove stale SBOM entries for this repo before reinserting
         if !sbom_entries.is_empty() {