- AI (space) -> 400 DeepSeek: fdAgent.generate now uses the clean no-tools /api/agent/generate endpoint instead of the tool-enabled conversation engine (which sends tools/tool_choice schemas DeepSeek rejects). Fixes the composer, Ask AI, AI meeting note and summarize flows. - Slash menu arrows: selection highlight was invisible on open (nothing marked), so up/down appeared dead. Call _rs() on open + after filtering, and give the selected item an accent background + left bar. Verified with jsdom harness: Down/Up move selection, Enter applies. - Block outline when selected: suppress focus rings (outline/box-shadow) on all editable blocks ([data-bid], .block-content, page title). - Drag handle (6-dot): add .block-wrapper:hover/:focus-within .block-handle so it shows on hover for normal blocks (only column-wrappers showed it before). - Empty-block hint: brighter (--text-secondary, opacity .75) so the "Press space for AI or / for commands" text is clearly visible on empty paras. - VERSION + app.main -> 5.1.3; CHANGELOG updated. - 271 tests pass; page renders 200; /api/agent/generate route registered; JS validated (node --check + jsdom).