chore: clean .gitignore cache

docs/plans/sample_orchestration_plan.md

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-<!--
-  Sample Orchestration Plan used by the Management agent when invoking subagents.
-  Keep this file small and precise. Subagents will read the file and act according to the Handoff Contract.
--->
-
-# Plan: Aggregated Host Statuses Endpoint + Dashboard Widget
-
-## 1) Title
-
-Implement `/api/v1/host_statuses` backend endpoint and the `CharonStatusWidget` frontend component.
-
-## 2) Overview
-
-This feature provides an aggregated view of the number of proxy hosts and the number of hosts that are up/down. The backend exposes an endpoint returning aggregated counts, and the frontend consumes the endpoint and presents a dashboard widget.
-
-## 3) Handoff Contract (Example)
-
-**GET** /api/v1/stats/host_statuses
-
-Response (200):
-
-```json
-{
-  "total_proxy_hosts": 12,
-  "hosts_up": 10,
-  "hosts_down": 2
-}
-```
-
-## 4) Backend Requirements
-
-- Add a new read-only route `GET /api/v1/stats/host_statuses` under `internal/api/handlers/`.
-- Implement the handler to use existing models/services and return the aggregated counts in JSON.
-- Add unit tests under `backend/internal/services` and the handler's folder.
-
-## 5) Frontend Requirements
-
-- Add `frontend/src/components/CharonStatusWidget.tsx` to render the widget using the endpoint or existing monitors if no endpoint is present.
-- Add a hook and update the API client if necessary: `frontend/src/api/stats.ts` with `getHostStatuses()`.
-- Add unit tests: vitest for the component and the hook.
-
-## 6) Acceptance Criteria
-
-- Backend: `go test ./...` passes.
-- Frontend: `npm run type-check` and `npm run build` pass.
-- All unit tests pass and new coverage for added code is included.
-
-## 7) Artifacts
-
-- `docs/plans/current_spec.md` (the plan file)
-- `backend` changed files including handler and tests
-- `frontend` changed files including component and tests