feat: align devDeps to 0.2.0-rc.2 (21 packages)

- Bump 21 @deepseek-ai devDeps from 0.1.5-rc.2 → 0.2.0-rc.2
  (dsh-code-runtime stays at 0.1.5-rc.2 — no 0.2.0-rc.2 published)
- Fix sidechat-routes.ts: source.kind 'plugin' → 'user'
  (0.2.0-rc.2 removed 'plugin' from MessageSourceMap)
- Remove unused SIDE_INJECTION_PLUGIN import
- Fix test fixtures for 0.2.0-rc.2 stricter validation:
  - tool/result message role: 'user' → 'tool'
  - add toolCallId at message top level
  - assertion kind: 'plugin' → 'user'
- Icon migration: Icon*14 → Icon*Regular, Icon*16 → Icon*Medium (19 files)
- SideChatView API migration to 0.2.0-rc.2
- Add 4 new locale keys (sideChatBlockNoExitCode, codeLabel, wrapLabel, unwrapLabel)
- intercept.tsx: guard against undefined matched in SidebarProducedFiles

Verification:
- pnpm run typecheck: PASS
- pnpm run build: PASS
- npx vitest run: 1015 passed | 0 failed | 9 skipped

src/client/TabBar.tsx

@@ -10,7 +10,7 @@
 import { useEffect, useRef, useState, type ReactNode } from 'react'
 import clsx from 'clsx'
 import {
-  IconCloseFill14, IconPlusOutline16, Menu,
+  IconCloseFillRegular, IconPlusOutlineMedium, Menu,
 } from '@deepseek-ai/dsh-client-ui-primitives'
 import type { SidebarTab } from './state.ts'
 import { isAgentTabId } from './state.ts'
@@ -241,7 +241,7 @@ export function TabBar(props: {
                 onClose(tab.id)
               }}
             >
-              <IconCloseFill14 />
+              <IconCloseFillRegular />
             </button>
           </div>
           )
@@ -275,7 +275,7 @@ export function TabBar(props: {
               title={t('newTab')}
               onClick={() => { setMenuOpen(v => !v); setTabMenu(null) }}
             >
-              <IconPlusOutline16 />
+              <IconPlusOutlineMedium />
             </button>
           )}
         />