feat(FN-2119): merge fusion/fn-2119

packages/core/src/settings-schema.ts

@@ -52,6 +52,7 @@ export const DEFAULT_GLOBAL_SETTINGS = {
 /** Default values for project-level settings. */
 export const DEFAULT_PROJECT_SETTINGS = {
   globalPause: false,
+  globalPauseReason: undefined,
   enginePaused: false,
   maxConcurrent: 2,
   maxTriageConcurrent: 2,

packages/core/src/types.ts

@@ -1007,6 +1007,9 @@ export interface ProjectSettings {
    *  global emergency stop for the entire AI engine.
    *  Individual per-task pause flags are unaffected. */
   globalPause?: boolean;
+  /** Tracks why globalPause was activated. "rate-limit" for automatic pauses,
+   *  "manual" for user-initiated. Cleared on unpause. */
+  globalPauseReason?: string;
   /** Engine pause (soft pause): when true, the scheduler and triage
    *  processor stop dispatching **new** work (scheduling, triage
    *  specification, and auto-merge), but currently running agent sessions