feat(self-heal): expose the self-heal toggles in the Feature Flags panel

Add self_heal_enabled (detect + notify) and self_heal_originate_enabled (also
open fix tasks) to the panel feature-flags registry + card, so the loop can be
armed/disarmed from Settings instead of editing env. Effect is on the next
restart, like the other flags; the self_heal_project_slug target (which repo is
RoboCo) stays a deployment env setting.

panel/src/components/settings/feature-flags-card.tsx

@@ -22,6 +22,9 @@ const FLAG_DESCRIPTIONS: Record<string, string> = {
   internal_pr_enabled: "Run the read-only safety reviewer on internal branch PRs.",
   research_enabled: "Let the Board and PMs run web research.",
   strategy_engine_enabled: "Generate and maintain company strategy artifacts.",
+  self_heal_enabled: "Watch RoboCo's own CI and notify you when it regresses.",
+  self_heal_originate_enabled:
+    "Also open a PENDING fix task for a detected regression (needs Self-healing on; the task waits for your approval).",
   provisioning_enabled: "Auto-provision projects from approved pitches.",
   rag_auto_update_enabled: "Keep the knowledge base index refreshed automatically.",
   transcript_prune_enabled: "Run the background sweep that prunes old transcripts.",