Trim negative-space comments per mara's review

Don't state what a function/module doesn't do and where that
happens instead — just describe what it does. Cut the "not
something this function decides" / "not affected by this" /
"not a placeholder for a later commit" asides from the doc
comments touched in the last two commits.

frontend/packages/agent/src/hooks/useAgentState.ts

@@ -1,13 +1,5 @@
-// useAgentState — polls `GET /api/state` and exposes the latest
-// snapshot + loading/error status. Mirrors app.js's old `refreshState`
-// data fetch, not its exact re-poll cadence: the old page re-polled on a
-// timer only while a login was in flight, and otherwise waited for an
-// SSE `turn_end` event to trigger one-shot refreshes. That SSE-triggered
-// model is permanently off the table now — the terminal stream's `kind`
-// tag (what let a client single out a turn-boundary event) is gone by
-// design, see `useLiveStream.ts`'s module doc — so this hook's flat 4s
-// interval is the only refresh path, not a placeholder for a later
-// commit.
+// useAgentState — polls `GET /api/state` every 4s and exposes the latest
+// snapshot + loading/error status.
 import { useEffect, useRef, useState } from 'preact/hooks';
 import type { AgentState } from '../types.js';
 

frontend/packages/agent/src/hooks/useLiveStream.ts

@@ -12,18 +12,9 @@
 // terminal.js's `start()`: a live envelope landing between EventSource-
 // open and the history response resolving is buffered, not dropped or
 // double-counted (`envelope.seq <= history.seq` → already covered by the
-// initial history page, drop it from the buffer). There's no per-row
-// `kind` any more to sanity-check that against — `seq` alone is the
+// initial history page, drop it from the buffer). `seq` alone is the
 // whole dedup signal, see `TermEnvelope`'s doc in hive-agent's
 // `web_ui/stream.rs`.
-//
-// The old `onLiveTurnBoundary` callback (a snappier one-off `/api/state`
-// refresh right after a live turn_start/turn_end, instead of waiting for
-// the plain poll interval) is gone with the `kind` tag it relied on to
-// spot a turn boundary — per mara's own framing that trigger is an
-// agent-state concern, not a terminal-stream one, and this stream no
-// longer has the structure to single one out. `useAgentState`'s 4s poll
-// is the only refresh path now.
 import { useEffect, useRef, useState } from 'preact/hooks';
 import type { TermEnvelope, TermRow } from '../lib/termMsg.js';
 

hive-agent/src/stream_enrich.rs

@@ -271,8 +271,7 @@ fn classify_assistant_content(content: &[Value], ctx: &mut ClassifyCtx) -> Vec<T
 /// for Edit, markdown body for send, plain for everything else with a
 /// body). That's now just "does this row have a body" — `body.is_some()`
 /// on the returned [`TermMsg`] *is* the expandable signal, no separate
-/// flag; whether it renders open or collapsed is a uniform client-side
-/// preference, not something this function decides.
+/// flag.
 fn classify_tool_use(c: &Value) -> TermMsg {
     let name = c.get("name").and_then(Value::as_str).unwrap_or("");
     let input = c.get("input").cloned().unwrap_or_else(|| json!({}));
@@ -427,10 +426,6 @@ fn classify_task_event(v: &Value) -> Option<TermMsg> {
 /// - `"markdown"` → rendered via `marked` + `DOMPurify`; used for
 ///   message-bearing tools: `send`
 ///
-/// Whether the resulting row renders open or collapsed is a uniform
-/// client-side preference (the operator's expand-tool-output setting),
-/// not something this function or its `body_type` decides.
-///
 /// Returns `None` for tools that have no body at all.
 ///
 /// **`Write` is intentionally absent**: its `content` field can be megabytes

hive-agent/src/term_msg.rs

@@ -106,8 +106,7 @@ impl TermMsg {
 /// actually returned, not across the live/history boundary. Accepted
 /// degradation — the only user-visible effect is a `recv` result whose
 /// `tool_use` fell on the other side of a page/reconnect boundary rendering
-/// its body as plain text instead of markdown (open/collapsed state is a
-/// uniform client-side preference either way, not affected by this).
+/// its body as plain text instead of markdown.
 #[derive(Default)]
 pub struct ClassifyCtx {
     tool_name_by_id: HashMap<String, String>,