Auto-approve read-only clarification breakpoints overview

Mirrors a BreakpointRule with action=auto-approve, pattern matching breakpointIds whose ActionCategory resolves to `read` (per ApprovalPosture in packages/babysitter-sdk/src/breakpoints/types.ts). When the orchestrator elicits a read-only clarification breakpoint, this rule fires, emits a canonical kanban issue annotated with the auto-approval decision, and records the matched rule id on the audit trail. Source: packages/babysitter-sdk/src/breakpoints/rules.ts (addRule + readRules).