Add CLI formatter, fix env forwarding, rename job prefix to agent-claude-

- Add src/cli/ with format-event.ts (printClaudeStreamEvent) exported from
  CLIAdapterModule
- Fix env var forwarding: read from pod spec container env dynamically instead
  of static allowlist; agent config env overrides pod values
- Rename K8s Job prefix from agent- to agent-claude-
- Add fsGroupChangePolicy: "OnRootMismatch" to skip PVC chown on subsequent runs
- Add comprehensive test coverage (159 tests across 5 test files)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/cli/index.ts

@@ -0,0 +1 @@
+export { printClaudeStreamEvent } from "./format-event.js";