* docs: add MSIX Store build design spec
* docs: update MSIX spec (PFN deep link, .drc, Associate tab) and add implementation plan
* ci: add MSIX logo asset generator and generated assets
* ci: fix MSIX asset rendering edge bleed (PixelOffsetMode) and make output order deterministic
* ci: add MSIX AppxManifest template
* ci: add MSIX packaging script
* ci: make build_msix.ps1 stage-only exit dot-source safe
* ci: build MSIX Store package in Windows job
* ci: run MSIX pack after existing Windows uploads and keep it out of release downloads
* feat: add MSIX packaged-context detection helpers
* fix: resolve MSIX package APIs dynamically to keep Win7 loadable
* feat: suppress self-update in MSIX Store build
* feat: suppress runtime file associations in MSIX Store build
* feat: keep version check in MSIX build, point update dialog at the Store
The update check is notification-only (OrcaSlicer never auto-downloads),
so the Store build keeps checking for new versions instead of skipping
the check. What changes when packaged is the new-version dialog: the
Download button is hidden, the info text asks the user to update from
the Microsoft Store, and the hyperlink / wxID_YES action opens the Store
product page instead of the GitHub release page.
* docs: align spec verification plan with Store-redirect updater behavior
* feat: default MSIX identity to the reserved Partner Center values
* feat: render MSIX logos full-bleed from the gradient-circle SVG
* feat: point update dialog Download button at the Store in MSIX builds
* feat: link Associate tab to Windows Default Apps settings in MSIX builds
* docs: align spec with review-driven logo, dialog and Associate-tab changes
* clearn up
