bug: `daemon status` and `gortex repos` disagree about tracked repos; a repo whose directory was deleted is never flagged

[tiendungdev]

Environment

• gortex v0.60.0+dd3bb30, Windows 11 Pro (10.0.26200)

Observed

With two repos tracked, one of whose directory had been deleted from disk
days earlier:

• gortex daemon status → tracked repos: table listed 1 repo
  (only the live one).
• gortex repos → listed 2 repos, including the deleted one:
  fastpanel-api | HEAD (none) | INDEXED (none) | LAST INDEXED 2026-07-10 | stale | C:\...\fastpanel-api (path no longer exists).

Two views of the same daemon disagreeing means neither can be trusted as the
inventory. And the ghost was 8 days old — nothing (status, health, repos, a
log line) ever said "this repo's path no longer exists".

A milder variant of the same identity confusion: the SessionStart status
prints the surviving repo as cwd ... is tracked as repo ` ` (empty repo
name) while gortex repos names it domain-manage. See #309 for where that leads.

Confirmed repro (isolated daemon, v0.60.0)

Immediately after rm -rf repo-b (still tracked): both views keep the
repo with no flag — daemon status lists it with its node counts, repos
shows HEAD (none) ... stale with the dead path. Nothing says the path is
gone. The production observation above (status=1 repo vs repos=2, eight days
later, daemon restarted meanwhile) shows the two views then drift apart —
same root cause: repo-path liveness is never checked.

Expected

• One inventory, or at least two views that agree.
• A tracked repo whose path fails stat should be flagged loudly in both
  views (e.g. MISSING — path deleted; run gortex untrack <path>), and
  should count against index_health.

Proposed fix

1. Make both commands read the same repo registry snapshot.
2. Add a stat check per repo when rendering either view; render a MISSING
   state instead of HEAD (none).
3. Optionally auto-quarantine: after N days MISSING, suggest (not perform)
   untrack in the status output.

Repro

gortex track C:\tmp\some-repo
# wait for index
rm -rf C:\tmp\some-repo
gortex daemon status   # repo absent from table
gortex repos           # repo present, HEAD (none), no warning