fix(c8): sidebar entry unity — DSH Icon*16 + order 40-50

Root cause of the visual split:
1. Icon system mismatch: apes used react-icons (FiCpu/FiGrid/FiUser,
   static 14px ReactNode) while native builtins use DSH's Icon*16
   components (function form, host-controlled size). Two different
   icon libraries → inconsistent visual style.
2. Order 901-903 pushed apes tabs far after native builtins (10-35),
   creating two visually separate groups in the tab strip.

Fix:
- icon: react-icons Fi* → @deepseek-ai/dsh-client-ui-primitives
  Icon*16 (function form, same as builtins):
    agents  → IconAgentPresetOutline16
    apps    → IconGaugeOutline16
    profile → IconUserOutline16
- order: 901/902/903 → 40/45/50 (immediately after native builtins)
- SIDEBAR_SERVICE_VERSION + dsh.plugin.json version → 1.1.0
  (lockstep with package.json, required by manifest tests)

Gate: typecheck ✓ / build ✓ / test 119 files · 1249 passed · 9 skipped · 0 failed ✓

tests/apes-tabs.spec.ts

@@ -60,7 +60,7 @@ describe('apes:* tab registrations', () => {
     }
   })
 
-  it('apes tabs sort after the upstream builtins (order 900+)', () => {
+  it('apes tabs sort after the upstream builtins (order 40+)', () => {
     const { service, dispose } = setup()
     try {
       const orders = {
@@ -68,9 +68,11 @@ describe('apes:* tab registrations', () => {
         apps: service.getTab('apes:apps')?.order,
         profile: service.getTab('apes:profile')?.order,
       }
-      expect(orders.agents).toBeGreaterThanOrEqual(900)
-      expect(orders.apps).toBeGreaterThanOrEqual(900)
-      expect(orders.profile).toBeGreaterThanOrEqual(900)
+      // C8: order 40-50 places apes tabs immediately after the native builtins
+      // (10-35), not in a far-away 900+ band — visual unity in the tab strip.
+      expect(orders.agents).toBeGreaterThanOrEqual(40)
+      expect(orders.apps).toBeGreaterThanOrEqual(40)
+      expect(orders.profile).toBeGreaterThanOrEqual(40)
       // Strictly ordered: agents < apps < profile.
       expect(orders.agents!).toBeLessThan(orders.apps!)
       expect(orders.apps!).toBeLessThan(orders.profile!)