Confidence Score: 5/5

Safe to merge; all changed code paths are exercised by the new tests and the logic is correct for every realistic bench output shape.

The new parse_json_output function behaves correctly for all current callers: validators are specific enough to reject log-line noise, ambiguity detection raises rather than guessing wrong, and the trailing-preference logic is consistent with how bench commands actually emit their output. Tests cover the key edge cases including a multi-JSON noisy output with validator filtering and the ambiguous-match raise path. The one design note — that omitting the validator while bench appends JSON-formatted status lines can return the wrong fragment — is captured inline and does not affect any current caller.

No files require special attention.

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[parse_json_output called] --> B{json.loads succeeds AND validator passes?}
    B -- Yes --> C[Return value directly]
    B -- No --> D[Scan output for JSON start chars]
    D --> E{raw_decode + validator passes?}
    E -- No --> F{More chars to scan?}
    F -- Yes --> D
    F -- No --> G{Any candidate found?}
    E -- Yes --> H{Nothing after match?}
    H -- Yes --> I{trailing_candidate already set?}
    I -- Yes --> J[Raise Ambiguous JSON]
    I -- No --> K[Set trailing_candidate, continue scan]
    K --> F
    H -- No --> L{dirty_candidate already set?}
    L -- Yes --> M[Raise Ambiguous JSON]
    L -- No --> N[Set dirty_candidate, continue scan]
    N --> F
    G -- trailing found --> O[Return trailing_candidate]
    G -- dirty only --> P[Return dirty_candidate]
    G -- none found --> Q[Raise original_error]

_{Reviews (4): Last reviewed commit: "narrow installed app payload validation" | Re-trigger Greptile}

Hi, the PR is ready for review from my side.

The Greptile review is passing and there are no merge conflicts. The only remaining item appears to be the GitHub Actions workflow waiting for maintainer approval to run on this fork PR.

Please let me know if you’d like any changes.