docs: add dashboard UI coverage roadmap — 6-phase execution plan to close 55 gaps
Converts gap analysis findings into concrete phased roadmap:
- Phase 0: Fix ai-diagnostics backend bug + wire 7 hidden sidebar items (1 day)
- Phase 1: 4 critical admin pages — orgs, support, AI budgets, waitlist (1 week)
- Phase 2: 7 high-value admin pages — webhooks, knowledge, evals, reviews, marketplace, delivery, jobs (2 weeks)
- Phase 3: User dashboard security hub + 5 missing pages (1.5 weeks)
- Phase 4: 11 operational admin features — event bus, SCIM, IP rules, backups, etc. (2 weeks)
- Phase 5: User polish — feedback, org membership, marketplace, GDPR export (1 week)
- Phase 6: 14 backlog items triggered by product needs
Includes dependency graph, per-page template, effort estimates,
acceptance criteria, success metrics, and risk register.
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