Use shared private feedback with published UI beta.124

[callumalpass]

Shared private feedback

Uses actual published @mdbase-dev/ui@0.1.0-beta.124, normal registry dependency/lockfile and no local worktree links. Integrated current Writer main, preserving mark activity, cold-preview/shared-index work and corrected metadata selection aliases.

Shared description-first form, explicit screenshots/markup, three topics, consent-only bounded diagnostics and restrained failure nudges. Modal F8/command isolation and default theme/reset behavior are retained. No telemetry, raw compiler exceptions or new delivery adapter.

Verification

• Fresh frozen-lockfile install, full workspace typechecks/tests and production build.
• Cold-cache baseline/reliability Chromium suites on an owned loopback server. An earlier local run was invalidated after detecting a pre-existing server on default port 5320; it was not treated as qualification.
• Desktop/mobile feedback acceptance against the actual published package, every POST intercepted; private compiler text absent from diagnostics and no email sent.
• CI runs feedback acceptance too; deployment workflows map environment-scoped public feedback variables.

Rollout boundary

Worker and UI publication are complete. Exact consumer host policy is proposed separately in mdbase-cloud-ops #741 (draft), pending explicit host confirmation, Turnstile Edit credential and live staging/inbox acceptance. Keep feedback variables unset until accepted. This source PR changes no widgets, secrets or live Worker configuration and does not deploy production. Normal CI/merge and separate protected staging/production rollout gates remain mandatory.

[callumalpass]

Shared implementation merged in mdbase-dev/mdbase-connect#558 at ef35e45047a1aea15abeb58ddd8179dc12b8e16c after successful full merge-queue qualification (attempt 2). This integration remains release-blocked: actual UI publication and a truthful dependency/lockfile update are required before merging. Final local build and desktop/mobile acceptance passed, including the Writer global-heading reset. Nothing published or deployed.

[callumalpass]

Exact-head GitHub CI passed, including production build, cold demo baseline/reliability and new intercepted feedback acceptance. Source integration is merged. No frontend deployment or feedback/widget/secret enablement was performed; cloud-ops #741 remains a draft pending host confirmation, Turnstile Edit credential and live staging acceptance.