chore: bump version and changelog (v0.16.3.0)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CHANGELOG.md

@@ -1,5 +1,15 @@
 # Changelog
 
+## [0.16.3.0] - 2026-04-09
+
+### Changed
+- **AI slop cleanup.** Ran [slop-scan](https://github.com/benvinegar/slop-scan) and dropped from 100 findings (2.38 score/file) to 90 findings (1.96 score/file). The good part: `safeUnlink()` and `safeKill()` utilities that catch real bugs (swallowed EPERM in shutdown was a silent data loss risk). `safeUnlinkQuiet()` for cleanup paths where throwing is worse than swallowing. `isProcessAlive()` extracted to a shared module with Windows support. Redundant `return await` removed. Typed exception catches (TypeError, DOMException, ENOENT) replace empty catches in system boundary code. The part we tried and reverted: string-matching on error messages was brittle, extension catch-and-log was correct as-is, pass-through wrapper comments were linter gaming. We are AI-coded and proud of it. The goal is code quality, not hiding.
+
+### Added
+- **`bun run slop:diff`** shows only NEW slop-scan findings introduced on your branch vs main. Line-number-insensitive comparison so shifted code doesn't create false positives. Runs automatically after `bun test`.
+- **Slop-scan usage guidelines** in CLAUDE.md: what to fix (genuine quality) vs what NOT to fix (linter gaming). Includes utility function reference table.
+- **Design doc** for future slop-scan integration in `/review` and `/ship` skills (`docs/designs/SLOP_SCAN_FOR_REVIEW_SHIP.md`).
+
 ## [0.16.2.0] - 2026-04-09
 
 ### Added

VERSION

@@ -1 +1 @@
-0.16.2.0
+0.16.3.0