**1 issue found** across 2 files Confidence score: **4/5** - This PR looks safe to merge with minimal risk: the reported issue is moderate-low severity (4/10) and appears maintainability-focused rather than an immediate runtime break. - The main concern is duplicated stale-context retry logic in `packages/core/lib/v3/understudy/a11y/snapshot/focusSelectors.ts`, which can cause future fixes to be applied inconsistently across paths (drift risk). - Given the high confidence (8/10), it would be worth a follow-up cleanup to centralize the retry behavior and reduce regression risk over time. - Pay close attention to `packages/core/lib/v3/understudy/a11y/snapshot/focusSelectors.ts` - duplicated retry logic may diverge during future bug fixes.

Prompt for AI agents (unresolved issues)

```text Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately. P2: Stale-context retry logic is duplicated in two added paths, increasing drift risk for future bug fixes. ```

Architecture diagram

```mermaid sequenceDiagram participant User participant Page as Page (understudy) participant Focus as FocusSelectors participant CtxMgr as ExecutionContexts participant Session as CDP Session participant Browser Note over User, Browser: Runtime Execution Flow (Post-Navigation) User->>Page: evaluate(script) Page->>Session: Runtime.evaluate (cached contextId) Session->>Browser: Execute script alt Happy Path Browser-->>Session: Execution Result Session-->>Page: Result else CHANGED: Stale Context Error (-32000) Browser-->>Session: Error: "Cannot find context with specified id" Session-->>Page: Throws Exception Page->>Page: NEW: Catch "Cannot find context" error Page->>Page: NEW: mainWorldExecutionContextId() Page->>Session: NEW: Runtime.evaluate (fresh contextId) Session->>Browser: Execute script Browser-->>Session: Result Session-->>Page: Result end Page-->>User: Return value Note over Focus, Session: Selector Resolution Flow (XPath/CSS) Focus->>Session: Runtime.evaluate (initial contextId) alt CHANGED: Stale Context Error (-32000) Session-->>Focus: Throws Exception Focus->>CtxMgr: NEW: getMainWorld(session, frameId) CtxMgr-->>Focus: freshCtx Focus->>Session: NEW: Retry Runtime.evaluate (freshCtx) Session-->>Focus: Result/ObjectId end Focus-->>Page: Return ObjectId ```

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