Root cause: DSH's @deepseek-ai/dsh-client-ui-primitives only ships
outline variants (mask+stroke) for agent/gauge/user icons, while native
tabs use fill:currentColor paths (solid, heavy visual weight). This made
the apes tabs look 'lighter' than the official ones in the + menu.
Fix: custom fill-style SVG icons in src/client/apes/icons.tsx
(IconAgentFill16, IconGaugeFill16, IconUserFill16) — matching the
fill:currentColor path style of DSH native tabs (IconCodeOutline16,
IconFolderOpen16, etc.).
Also: order 40/45/50 → 60/65/70 (avoid clash with terminal=40,
browser=50 in the native tab order).
