Merges the FN-3548 approval pause/resume system: agents now stall at workflow gates pending approval, with a full lifecycle spanning gate context lookup, action-gate pause/retry, executor and heartbeat pause callbacks, and dedicated approval decision routes. Also lands FN-3744 agent action routes an
Fusion-Task-Id: FN-3548
Wired permanent-agent approval context into runtime paths for FN-3561, updating the agents documentation and adding test coverage for the heartbeat executor to validate the runtime behavior.
Fusion-Task-Id: FN-3561
Merged branches introduce an approval-request persistence layer (FN-3546) with a new `ApprovalRequestStore` in core, schema v68 with audit history support, and updated dashboard task/API tests, alongside a minor task-schema extension (FN-3429) adding `branch`/`baseBranch` fields to the task model an
Fusion-Task-Id: FN-3546
