drop hive and agent response fields the frontend never reads

docs/4-implementation/web-ui/agent-page.md

@@ -99,7 +99,7 @@ at a given viewport width. Two columns:
 
 Values throughout come from `GET /api/state`'s cold-load snapshot,
 kept in sync afterwards by the SSE stream (see Live view below) —
-`context_window_tokens` for the ctx badge tooltip, `qualified_label`
+`qualified_label`
 (the hive-qualified `name@domain` form, used for the browser tab title
 so two tabs from different hives are distinguishable; the header's own
 `◆ <label> ◆` stays short).
@@ -288,15 +288,14 @@ credentials arrive from the swarm secret store.
 
 - `GET /api/state` — cold-load snapshot (`StateSnapshot`) consumed by
   the frontend (`useAgentState.ts`) on page load. Includes `turn_state`,
-  `context_window_tokens`, `qualified_label`,
+  `qualified_label`,
   `model`, `model_source`, `effort`, `effort_source`, `links`, and
   other fields described inline throughout this document. All
   subsequent state updates arrive via SSE.
 - `GET /api/dashboard-state` — lean snapshot of agent-owned fields
   fetched once per running agent by the dashboard's container row to
   get fresh values without relying on hive-c0re's periodic file-reads.
-  Returns `{ status_text?, status_set_at?, ctx_tokens?, context_window_tokens,
-rate_limited, links }`. Only called when the container is running;
+  Returns `{ status_text?, status_set_at?, rate_limited, links }`. Only called when the container is running;
   skipped (muted badges) when stopped. Also accessible via the gateway
   at `/agent/<name>/api/dashboard-state`.
 - `GET /api/todos` — harness-local todos snapshot (loose-ends v2)