docs: document Desktop flows in Core

[ovvesley]

Summary

• inventory the current Desktop routes and map each product flow to its Core API boundary
• document the shared Electron/Xvfb capture procedure, versions, resolution, approval, and redaction rules
• add one reviewed real-Electron onboarding capture to the Core documentation only

This stacked PR extends #33 and addresses Paperclip AKO-22 under AKO-21. It contains no Desktop repository changes, product harness, API change, merge, or release.

Verification

• /usr/local/bin/go test ./...
• npm run typecheck --prefix docs
• npm run build --prefix docs
• npm run check:links --prefix docs
• git diff --check
• real Electron capture with operational Core (GET /akoflow-api/instance/ returned 200)

Evidence and risk

The accepted 1280x860 onboarding image contains no hostname, credentials, or unstable IDs. A working Overview candidate was deliberately rejected because the footer exposed the hostname-derived daemon identity. Dependency audit warnings are pre-existing and unchanged.

[ovvesley]

Encerrada por decisão explícita do mantenedor. A proposta atual foi descartada e não deve ser mergeada. As branches foram preservadas apenas para recuperação histórica; qualquer retomada deve começar em nova issue/PR com escopo revisado.