Task: Integrate direct Learning README images

Identity

Fast-forward the verified direct-README-image client source onto local main.
Reconcile accepted Learning decisions, architecture/domain/current-state memory, README, the Works Square collaboration contract, and the production commitment.
Preserve the previously untracked packaging task record exactly as adopted by the user's explicit merge confirmation.

Implement the user's explicit replacement of publish-time image mirroring with direct README Markdown image rendering.
Keep raw HTML disabled, direct image URLs credential-free HTTPS only, and archive, cover, historical-media, authentication, and module-access boundaries unchanged.
Do not claim production deployment or signed-client smoke from source integration.

Fast-forwarded client source 9956739 onto main.
Updated canonical client documentation so Markdown image nodes directly load validated credential-free HTTPS URLs, including SVG and other Electron-supported formats.
Recorded that remote-origin availability, redirects, format support, and requester network privacy are no longer controlled by Works Square image mirroring.
Kept Main-owned verified ZIP saving plus controlled cover/historical-media handling.

Merged-default-branch Learning tests: 2 files, 5 passed.
Merged-default-branch TypeScript check: passed.
Feature source verification remains 176 files / 2058 passed, typecheck, lint, and Vite production build passed.
Canonical-document stale-mirroring scan and git diff --check: passed.

Deploy matching Works Square source 65ea070 before distributing the matching client.
Smoke real remote SVG/raster URLs, an unavailable origin, and privacy messaging in Windows and signed macOS packages with a real entitled account.