chore: complete v1.0 milestone

Archive v1.0 MVP: 7 phases, 13 plans, 27/27 requirements.

- Archive roadmap to milestones/v1.0-ROADMAP.md
- Archive requirements to milestones/v1.0-REQUIREMENTS.md
- Move milestone audit into milestones/
- Create MILESTONES.md with v1.0 entry
- Evolve PROJECT.md: move shipped requirements to Validated,
  update Context with stack/LOC, log Key Decisions with outcomes
- Collapse ROADMAP.md to one-line milestone summary
- Update STATE.md to shipped status
- Back-fill stale requirements-completed frontmatter on
  02-01, 04-01, 05-01, 06-01 SUMMARY.md files

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

imptune/api/packages.py

@@ -13,6 +13,7 @@ import imptune.config as cfg
 from imptune.db.models import Icon, Printer
 from imptune.generators.intunewin_builder import build_intunewin
 from imptune.generators.script_generator import render_detect, render_install, render_uninstall
+from imptune.storage.driver_store import DriverStore
 
 router = APIRouter(prefix="/printers")
 
@@ -43,8 +44,7 @@ def _get_printer_and_driver(printer_id: int):
 
 
 def _get_driver_zip_path(driver) -> str:
-    """Return the on-disk path of the driver ZIP file."""
-    return os.path.join(cfg.DRIVERS_DIR, f"{driver.sha256}.zip")
+    return str(DriverStore(cfg.DRIVERS_DIR).get_path(driver.sha256))
 
 
 @router.get("/{printer_id}/packages/ninja")