fix(deps): resolve 8 npm audit vulnerabilities

[0xAxiom]

What

Runs npm audit fix to patch all 8 open security vulnerabilities in the dependency tree.

Vulnerabilities resolved:

Severity	Package	Old → New	Issue
🔴 Critical	handlebars	4.7.8 → 4.7.9	JS injection via AST type confusion (GHSA-3mfm-83xf-c92r, GHSA-2w6w-674q-4c4q)
🟠 High	flatted	3.3.3 → 3.4.2	Prototype pollution / unbounded recursion DoS
🟠 High	lodash	4.17.23 → 4.18.1	Code injection via _.template
🟠 High	picomatch	patched	Method injection in POSIX character classes + ReDoS
🟠 High	vite	7.3.1 → 7.3.2	Path traversal + arbitrary file read via WebSocket
🟡 Moderate	yaml	2.8.2 → 2.8.3	Stack overflow via deeply nested YAML
🟡 Moderate	brace-expansion	patched (x2)	Two version pins fixed

Why

npm audit was reporting 8 vulnerabilities (3 moderate, 4 high, 1 critical). All are fixable without breaking changes — npm audit fix --dry-run confirmed no major version bumps needed.

Tested

• All 252 unit + integration tests pass after the update (npm run test)
• npm audit reports found 0 vulnerabilities after fix