# Performance Review Report

**Branch**: fix-retry-loop-git-reset -> main
**Date**: 2026-05-12

## Issues in Your Changes (BLOCKING)

### CRITICAL

(none)

### HIGH

(none)

## Issues in Code You Touched (Should Fix)

(none)

## Pre-existing Issues (Not Blocking)

(none)

## Suggestions (Lower Confidence)

(none)

## Summary

| Category | CRITICAL | HIGH | MEDIUM | LOW |
|----------|----------|------|--------|-----|
| Blocking | 0 | 0 | 0 | - |
| Should Fix | - | 0 | 0 | - |
| Pre-existing | - | - | 0 | 0 |

**Performance Score**: 9/10
**Recommendation**: APPROVED

## Analysis

This PR changes the RETRY loop iteration result handling from resetting the working directory on exit-condition-not-met to committing work as 'progress'. The changes are well-scoped and have no performance concerns:

**1. No algorithmic regressions**: The change modifies control flow (which branch to take after eval) rather than introducing new data structures or loops. The `handleRetryResult` and `handleOptimizeResult` paths remain O(1) per iteration.

**2. Migration v26 (loop_iterations table recreation)**: The new migration recreates `loop_iterations` with an expanded CHECK constraint. This is a one-time startup cost, consistent with the existing pattern (migrations v2, v3, v11, v22). The `INSERT INTO ... SELECT` copies all rows, which is O(n) where n = existing loop iterations. This is acceptable because: (a) it runs once, (b) loop_iterations is a bounded working table, not a high-volume audit log, and (c) all four indexes are correctly recreated. (applies PF-002 -- no backward-compat migration needed for a feature with zero users.)

**3. Git operations**: The new 'progress' commit path calls `commitAllChanges` (which was already called on the 'pass' and 'keep' paths). The RETRY failure path now passes `overrideTarget` to `resetIterationGitState`, which is a simple parameter forwarding -- no additional I/O. The net effect is that RETRY exit-condition-not-met iterations now do a `git commit` instead of a `git reset --hard`, which is comparable in cost.

**4. No new async waterfalls or N+1 patterns**: The `resetIterationGitState` signature adds an optional `overrideTarget` parameter but the internal logic is a single `resetToCommit` call (unchanged). No sequential-when-parallel-possible patterns were introduced.

**5. No unbounded data or memory concerns**: The `consecutiveFailures` counter is now reset to 0 on 'progress', which makes the `maxConsecutiveFailures` guard track only hard crashes. This does not change memory usage or introduce unbounded growth.

**6. Database writes remain atomic**: Both the RETRY progress path and the TaskFailed path use existing `database.runInTransaction()` patterns with synchronous repo methods. No new transaction overhead.
