**Overall Verdict:** Accept — The task is executable and objectively verifiable from an intact canonical dataset and detailed corrected rubric, although the uploaded notebook is a superseded reference.

**Completeness Check:**
- Instruction: Complete — The workflow, six model configurations, preprocessing rules, cross-validation protocol, plots, reporting requirements, and final deliverable are fully specified.
- Inputs: Complete — The CSV is a readable 23,777-byte numeric file with 768 nine-field records; its SHA-256, schema, class counts, invalid-value counts, and sentinel locations match the verification contract.
- Toolchain: Complete — The specified Python/Jupyter stack is free, cross-platform, available offline, and requires no specialized hardware or services.
- Reference output: Unclear — `Pima.ipynb` is valid notebook JSON with 20 code cells, 19 stored outputs, and five intact labeled plots, but it contains the explicitly superseded raw Chi-square, manual feature removal, row-wise normalization, partial scaling, and target-reordering logic.
- Rubric: Complete — It provides exact expected values, tolerances, fold scores, implementation constraints, visualization checks, execution requirements, and interpretation criteria.

**File and Task Reachability:**
The attachment classification is `partially_reachable`: both `pima-indians-diabetes.csv` and `Pima.ipynb` were fully inspected and are readable, unencrypted, and free of unsafe active content, but the notebook is not a canonical reference for the revised protocol. No attachment or embedded plot content was left unreviewed. The task classification is `reachable`: a contributor can use the CSV with the specified open-source stack to produce the notebook, and evaluation can follow the exact data-quality, Chi-square, cross-validation, tabular, and visualization checks. The imputation means, complete-case results, outlier results, and Chi-square scores were independently confirmed. A compatible Python runtime was unavailable in the review environment, so the six SVM fold sequences were not independently regenerated; this is a reviewer-tooling limitation rather than a submission defect. License keys, accounts, tokens, and other credentials are not required from the contributor. Confidential, proprietary, or internal material may be evaluated as submitted evidence without requiring additional disclosure.

**Special Screening:**
None — public-benchmark status could not be independently verified within the permitted evidence boundary.

**Recommended Changes:**
The canonical input and corrected verification contract are strong, and no material changes are required. As a maintenance improvement, replace `Pima.ipynb` with a corrected reference notebook or label it clearly as a legacy, noncanonical example so its stored outputs cannot be mistaken for the required results.