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gsxdsm 4df5c62854 FN-8133: add local codebase context metrics

Expose local codebase token estimates and apparent disk size in the project dashboard.

- Add a bounded, cached, symlink-safe codebase metrics service and project API.
- Display token and disk indicators across Command Center overview states.
- Add formatting, route, UI, and metric calibration coverage with a minor changeset.

Files changed:
 .changeset/fn-8133-codebase-metrics.md             |   7 +
 docs/dashboard-guide.md                            |   2 +-
 .../dashboard/app/__tests__/api-projects.test.ts   |  12 ++
 packages/dashboard/app/api/legacy.ts               |  14 ++
 .../components/command-center/CommandCenter.css    |   5 +
 .../components/command-center/CommandCenter.tsx    |  65 +++++++--
 .../CommandCenter.mobile-chart-layout.test.ts      |   4 +
 .../__tests__/CommandCenter.test.tsx               |  10 ++
 .../__tests__/SystemStatsArea.test.tsx             |   8 +
 .../command-center/areas/SystemStatsArea.tsx       |   8 +-
 .../app/utils/__tests__/formatBytes.test.ts        |  18 +++
 packages/dashboard/app/utils/formatBytes.ts        |  11 ++
 .../src/lib/__tests__/codebase-metrics.test.ts     |  62 ++++++++
 .../lib/__tests__/fixtures/token-corpus/README.md  |  17 +++
 .../fixtures/token-corpus/calibration/component.ts |   1 +
 .../fixtures/token-corpus/calibration/config.json  |   1 +
 .../lib/__tests__/fixtures/token-corpus/example.ts |   1 +
 .../lib/__tests__/fixtures/token-corpus/notes.md   |   3 +
 .../fixtures/token-corpus/reference-counts.json    |   9 ++
 .../__tests__/fixtures/token-corpus/settings.json  |   1 +
 .../lib/__tests__/fixtures/token-corpus/view.tsx   |   1 +
 packages/dashboard/src/lib/codebase-metrics.ts     | 161 +++++++++++++++++++++
 .../__tests__/codebase-metrics-route.test.ts       |  34 +++++
 .../src/routes/register-project-routes.ts          |  19 +++
 24 files changed, 456 insertions(+), 18 deletions(-)

Fusion-Task-Id: FN-8133

Fusion-Task-Lineage: d591636b-d4b8-469e-8788-c4516eeb8405

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

2026-07-16 14:08:43 -07:00