[MINOR] Missing regular file check: LoadPersona does not verify that the path refers to a regular file. Reading special files (FIFOs, devices) could block or cause unexpected behavior. Consider rejecting non-regular files (info.Mode().IsRegular()).
[MINOR] Potential TOCTOU/resource exhaustion risk: file size is checked via os.Stat before reading, but not re-validated after os.ReadFile. An attacker with control over the path could swap the file between Stat and Read, bypassing the size cap and causing large in-memory reads.
[MINOR] os.ReadFile reads the entire persona file into memory without a size cap. A maliciously large persona file could cause high memory usage on the CI runner (resource exhaustion).
[MAJOR] Unbounded YAML deserialization with yaml.Unmarshal on potentially untrusted persona files can allow resource exhaustion (e.g., deeply nested structures or alias expansion bombs). There is no explicit limit on nesting, aliases, or input size, contrary to the comment suggesting built-in protection.
[NIT] Design doc references github.com/goccy/go-yaml depth protections, but the implementation uses gopkg.in/yaml.v3. This mismatch may give a false sense of protection; yaml.v3 has no explicit caller-configurable limits in this code.
[MINOR] Production imports discovery allows go list to fail open (2>/dev/null
[MINOR] The grep check for test-only packages in production uses an unescaped regex pattern (grep -q "^${test_pkg}"). If a package name contains regex metacharacters (e.g., dots), this may match unintended imports. While not a code execution risk, it can cause false positives/negatives in enforcement.
[MINOR] The prefix match uses , which treats the right side as a glob pattern. While allowed entries are controlled via review, a metacharacter (e.g., *, ?, [) in an approved package could unintentionally broaden matches. Consider a literal prefix check to avoid glob semantics.
[MINOR] The new precommit target runs the dependency check, but unless CI invokes this target, policy enforcement may not occur in CI. Ensure CI runs make precommit (or otherwise invokes check-deps) to prevent unapproved dependencies from being merged.
[MINOR] The allowlist is duplicated between CONVENTIONS.md and this script (ALLOWED array), creating a risk of drift. A mismatch could either block approved deps or unintentionally allow unapproved ones, weakening policy enforcement. Consider deriving the list from a single source (e.g., parse CONVENTIONS.md or define the list in a single machine-readable file).
[MINOR] LoadPersona reads the entire persona file with os.ReadFile without size checks. A maliciously large YAML/JSON persona file could cause memory/CPU pressure (DoS) in CI or when run manually. Consider enforcing a reasonable max file size before parsing.