fix: run npm install in pre-commit hook before build (#410)

## Summary
- Adds `npm install` before `npm run all` in the husky pre-commit hook
- Prevents stale `node_modules` from producing unintended `dist/`
changes

🤖 Generated with [Claude Code](https://claude.com/claude-code)

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Low risk change confined to developer tooling; it only affects local
pre-commit behavior and should not impact runtime code.
> 
> **Overview**
> Ensures the pre-commit hook runs `npm ci` before `npm run all`, so
builds use a fresh/consistent `node_modules` prior to staging `dist`
changes.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
9b08810a42. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

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

.husky/pre-commit

@@ -1,4 +1,5 @@
 # shellcheck disable=SC1091
 
+npm ci
 npm run all
 git add dist