UX: richer empty guidance for Memory and Portfolio lists

[telivity-otaip]

Why

Board empty-state copy was improved earlier. Memory / Portfolio still render a single muted line (No accomplishments yet… / No portfolio items yet.) with no next step. First-run users bounce.

Size

S — copy + small HTML in the list renderers.

Task

In web/ui/state.mjs (search mem_list / pf_list empty branches):

1. Memory empty: 2–3 lines that explain capture → polish Accept → promote, plus a nudge to try Enrich from URL with a paste excerpt (LinkedIn fetch may be blocked).
2. Portfolio empty: explain resume_ok vs private, and that only resume_ok feeds the builder.
3. Keep Telivity chrome. No new dependencies. No jokes that imply AI invents metrics.

Acceptance

• Empty Memory / Portfolio states answer “what do I do next?” without the README
• Doctrine preserved: originals immutable; Accept required for polish; no auto-promote from enrichment
• Narrow window / mobile still readable
• npm test (or at least npm run test:web) still passes

Out of scope

Redesigning the whole Memory/Portfolio IA; adding onboarding tours.

[ETK2456]

Hi! I'd like to work on this issue. I'll improve the empty states for Memory and Portfolio lists in web/ui/state.mjs to explain the workflow and guide first-time users.