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.

[ozymandiashh]

Thanks — restoring accurate per-project token totals in the menubar is a real improvement.

Status: needs a rebase before review/merge — it currently conflicts with main. The menubar surface was reworked heavily after this PR's base (2026-06-23), and every core file this PR touches has changed since:

• src/menubar-json.ts and tests/menubar-json.test.ts (2 commits each)
• src/usage-aggregator.ts, mac/.../Data/MenubarPayload.swift, mac/.../CodeBurnApp.swift

Relevant landings include #549 (show every active agent as a tab), #567/#568 (combined multi-device usage in menubar-json), and #598 (menubar plan tab / model-scoped limits).

It's not superseded — I don't see the duplicate-project-row grouping or the project/session token totals in menubar-json on main today — but before a full review please:

1. Rebase onto current main and resolve the menubar-json.ts / usage-aggregator.ts / MenubarPayload.swift conflicts against the new shape of those files.
2. Re-confirm the problem still reproduces after the rework — some of the row-duplication behavior may interact with the new per-agent tab / combined-usage code, so a fresh before/after (the smoke-popover.sh you added is perfect for this) would help.
3. Keep the Swift decoder change backward-compatible with the current MenubarPayload schema on main (it moved).

Once rebased + CI-green I'll run the full adversarial review. Thanks for the smoke script and verification notes — that's exactly the right instinct.