refactor: move uploads from /tmp to ~/.imcodes/uploads #193

Job	Run time
Lint	14s
Typecheck	35s
Web Tests	29s
Secret Scan (gitleaks)	6s
Unit Tests (Node 22)	1m 57s
Server DB Integration Tests	34s
Server Unit Tests	30s
Unit Tests (Node 20)	1m 50s
E2E Tests	41s
Repo Provider Integration Tests	22s
Coverage Report	2m 8s
Docker Build & Push	59s
Publish to npm	2m 27s
	12m 52s

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