---
phase: 02-window-and-region-targeting
fixed_at: 2026-04-12T00:00:00Z
review_path: .planning/phases/02-window-and-region-targeting/02-REVIEW.md
iteration: 1
findings_in_scope: 4
fixed: 4
skipped: 0
status: all_fixed
---

# Phase 02: Code Review Fix Report

**Fixed at:** 2026-04-12
**Source review:** .planning/phases/02-window-and-region-targeting/02-REVIEW.md
**Iteration:** 1

**Summary:**
- Findings in scope: 4
- Fixed: 4
- Skipped: 0

## Fixed Issues

### WR-01: Crop dimensions can exceed image bounds in RegionTarget

**Files modified:** `src/capture/targets/region-target.ts`
**Commit:** 43e4ebd
**Applied fix:** Added `clampedWidth` and `clampedHeight` variables that use `Math.min()` to constrain crop dimensions to the available image area (`image.width - relX`, `image.height - relY`) before passing to `cropSync`. This prevents out-of-bounds crop requests that could cause native library crashes.

### WR-02: Crop dimensions can exceed image bounds in WindowRegionTarget

**Files modified:** `src/capture/targets/window-region-target.ts`
**Commit:** f688191
**Applied fix:** Added `clampedW` and `clampedH` variables that use `Math.min()` to constrain crop dimensions to the available window image area before passing to `cropSync`. Same pattern as WR-01 applied to the window-region capture path.

### WR-03: Division by zero when completed session has 0 frames

**Files modified:** `src/server.ts`
**Commit:** d424759
**Applied fix:** Added early return guard before grid dimension calculation. When `session.frames.length === 0`, returns a response with `frameCount: 0`, empty timestamps, and `capturedDurationMs: 0` without computing `cols`/`rows` (which would produce `NaN`). The grid resource link is omitted since there are no frames to compile.

### WR-04: Negative coordinate values not validated for region targets

**Files modified:** `src/server.ts`, `src/types.ts`
**Commit:** 86a8958
**Applied fix:** Added `.min(0)` Zod validation to `x`, `y`, `region_x`, and `region_y` coordinate schemas in both `server.ts` (inline tool schema) and `src/types.ts` (shared schema). This prevents negative coordinates from reaching `cropSync` where they would cause undefined native library behavior.

## Skipped Issues

None -- all in-scope findings were fixed.

---

_Fixed: 2026-04-12_
_Fixer: Claude (gsd-code-fixer)_
_Iteration: 1_