Agent Architecture Review, Validation snapshot

Design for delegation rather than direct manipulation

Classified as an autonomous agentic workflow: `run()` creates a `TriageState`, filters PRs, builds a plan, loops through `PULL_REQUESTS`, calls `review_pr()`, gates approvals, and can call side-effect functions such as `post_comment()`, `apply_suggested_fix()`, and `merge_pr()`. The design has good delegation primitives via `DelegationPolicy`, `allowed_repos`, `allowed_actions`, `available_actions()`, and execution-time re-checking of `policy_name`. However, the submitted execution layer is not actually shown: `_process_pr()` contains `# ... execute approved action with all policy guards ...` and `# merge branch enforces: auto_merge_enabled, BLOCKED_HIGH_RISK, auto_merge_max_score`, so the c…

Replace implied magic with clear mental models

The code improves the mental model with explicit `DRY_RUN`, action logs such as `COMMENT_RECORDED` vs `COMMENT_POSTED`, `available_actions(policy, record)`, and stronger `parse_review()` validation. But the user-facing model is still inconsistent: the context says the plan lists permitted actions such as `[comment, suggest_fix, request_review]`, while the approval gate exposes labels like `comment_only`, `suggest_fix`, `merge`, `skip`, and `reject`; `request_review` is permitted by `DEFAULT_POLICY` but never appears in `ACTION_TO_POLICY_NAME`. The printed `Disallowed by policy` list is also based on operator labels, not policy names, which can confuse users about whether `comment` and `comme…

Expose meaningful operational state, not internal complexity

The workflow defines meaningful operational states in `PRStatus`, including `QUEUED`, `REVIEWING`, `AWAITING_APPROVAL`, `BLOCKED_HIGH_RISK`, `BLOCKED_INVALID_OUTPUT`, `COMPLETED`, and `FAILED`. `_process_pr()` catches exceptions and sets `rec.status = PRStatus.FAILED`, which is aligned. However, the submitted code does not show status transitions after approved actions: after `approval_gate()` the actual execution is represented by comments, so there is no visible path setting `APPROVED_TO_COMMENT`, `APPROVED_TO_SUGGEST`, `APPROVED_TO_MERGE`, `SKIPPED`, or `COMPLETED`. At the workflow level, `save_audit()` logs `WORKFLOW_COMPLETED` before `open(audit_file, "x")` and `json.dump(...)`; if excl…

Make hand-offs, approvals, and blockers explicit

The approval path is explicit in several ways: `approval_gate()` logs `APPROVAL_REQUESTED`, persists `record.approval_decision` and `record.approver` before mutations, rejects `BLOCKED_INVALID_OUTPUT`, and distinguishes `APPROVAL_REJECTED` from `APPROVAL_GRANTED`. However, it does not actually wait for an explicit human approval by default: `raw = (os.environ.get("PR_AGENT_APPROVAL") or "comment_only").strip().lower()` silently grants `comment_only` when no approval is supplied. In live mode, that can lead to `post_comment()` being executed without a fresh operator decision. The approver identity from `current_approver()` is sourced from `PR_AGENT_APPROVER` or `USER`, which is useful for loc…