* Add metrics collection and terminal performance tests
* fix: handle Windows drive-letter paths across the codebase
Windows paths like C:\Users\foo\project were broken in multiple places:
- agent-storage slugified D:\MyProject as D:-MyProject (illegal colon)
- terminal-manager rejected all non-/ paths as relative
- bootstrap parser misparsed drive colons as TCP host:port
- daemon/client connection helpers misclassified Windows paths
- CLI cwd filtering used hardcoded / separators
- checkout-git worktree detection used hardcoded / in path checks
- worktree archive used split("/").pop() instead of path.basename()
All path helpers now normalize separators and handle Windows
drive letters with case-insensitive comparison where needed.
What changed:
- extracted shared readNodeErrnoCode helper in local daemon process control code
- updated isProcessRunning and signalProcess to use the shared helper
- added packages/cli/tests/18-local-daemon-utils.test.ts covering resolveTcpHostFromListen cases (numeric, host:port, unix sockets, empty/non-host)
Why:
- removes duplicated low-level error-shape branching and keeps errno handling consistent in one place
- adds deterministic coverage for pure listen parsing logic without depending on daemon runtime state
Accomplishments for next agent:
- this area now has a focused utility test entry that runs fast and is independent of daemon availability
- full workspace typecheck is clean after this change
Challenges / notes for next agent:
- packages/cli/tests/03-daemon.test.ts can be environment-sensitive when a daemon is already running (baseline in this workspace did not reliably represent daemon not running)
- existing unstaged change remains in scripts/codex-refactor-loop.sh and was intentionally left untouched
