refactor: jsc-mod 改名 jsc-mod-statusline、jsc-companion 改名 jsc-mod-companion,指令拆成獨立指令

- jsc-mod-statusline:/jsc-mod-statusline:enable、compact、disable
- jsc-mod-companion:/jsc-mod-companion:status、switch、disable、setup、todo、quiet
- 同步更新 plugin.json、marketplace.json 與各 README
- 補上 statusline band 測試缺少的 ui.render 底層處理

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

plugins/jsc-mod-companion/hooks/companion/verify.test.ts

@@ -0,0 +1,17 @@
+import { describe, expect, test } from 'claude-code/testing'
+
+import { isVerifyCommand } from './verify'
+
+describe('isVerifyCommand', () => {
+  test('常見的測試與 build 指令算驗證指令', () => {
+    for (const cmd of ['bun test', 'npm test', 'npm run test -- --watch', 'pnpm build', 'pytest -q', 'tsc -p .', 'cargo build --release', 'go test ./...', 'cd app && npm run build']) {
+      expect(isVerifyCommand(cmd), cmd).toBe(true)
+    }
+  })
+
+  test('其他指令不算', () => {
+    for (const cmd of ['grep foo src', 'ls -la', 'git status', 'cat test.txt', 'echo build', '']) {
+      expect(isVerifyCommand(cmd), cmd).toBe(false)
+    }
+  })
+})