fix(codeburn): restore menubar project token reporting

[zorgy13]

Summary

• group duplicate menubar project rows while preserving real token totals
• expose project/session token totals through the menubar JSON and backward-compatible Swift decoder
• add a menubar smoke script and verification notes for the CodeBurn restore path

Verification

• npm test -- tests/menubar-json.test.ts tests/providers/codex.test.ts tests/usage-aggregator.test.ts
• npm run build
• cd mac && swift build
• mac/Scripts/smoke-popover.sh /Users/vadimirrosman/Documents/Codex/2026-06-23/new-chat-4/outputs/codeburn-menubar-smoke-rebased-20260623T1432Z
• npx vitest tests/cli-export-date-range.test.ts tests/cli-json-daily.test.ts tests/cli-status-menubar.test.ts tests/parser-proxy-codex-only.test.ts --testTimeout 30000 --fileParallelism=false

Note: swift test is blocked in this local toolchain by no such module Testing before task tests run. Full parallel npm test hit 5000ms timeouts in four heavy CLI test files; those files pass when rerun sequentially with a 30000ms timeout.