feat(telemetry): aggregate project system telemetry

[John-Ryan21337]

Summary

• combine host and selected-project volume samples behind one server service
• resolve the project root before this boundary; never accept a renderer path
• key cache identity by project ID and authoritative workspace root
• prevent a slow old-root read from overwriting a newer project generation
• bound retained project results and sanitize dependency failures

Adoption order

Apply direct Cafe PRs #15, #37, #38, and #39 before this PR. This branch contains those exact heads plus one unique commit. The unique delta is two new server files.

This PR adds only server-side aggregation. It does not expose RPC, add a Web UI, or add temperature and GPU sensors.

Verification

• unique delta: 2 files, +532 lines
• focused aggregation tests: 9 passed
• full typecheck: 9/9 packages
• exact-file lint passed
• exact-file format passed
• git diff --check passed
• stable patch ID matches audited source commit bd8b37b5

[John-Ryan21337]

CI follow-up: the Windows Quality failure is isolated to apps/server/src/provider/Drivers/CodexHomeLayout.test.ts, while this PR's unique delta is only ProjectSystemTelemetry.ts and its test. Ubuntu and macOS Quality passed. I reran the exact failing test three consecutive times at head 5d90e30: 12/12 passed on every run. No product-code change is warranted for this unrelated Windows flake; please rerun the failed job.