feat(web): render AgentSwarm as an inline tool card (#1425)

* feat(web): render AgentSwarm as an inline tool card

Replace the bottom SwarmCard footer and the messagesToTurns live-skip
with one dedicated inline tool card for AgentSwarm. The card shows a
phase overview plus a per-subagent accordion: live progress while it
runs, parsed aggregated result once it completes (and after a refresh
that has already dropped the live tasks).

Refresh and resync keep member identity metadata (swarmIndex,
parentToolCallId, subagentType, runInBackground) stable across skeleton
task replacement in the reducer, and the .content-wrap flex layout is
hardened against the overflow compression that previously displaced the
footer.

* fix(web): handle swarm review feedback

- SwarmTool: when AgentSwarm fails before producing a structured
  agent_swarm_result (e.g. argument validation), render the raw tool
  output instead of the "waiting for subagents" placeholder so the
  failure cause is visible.
- resolveSwarmMembers: source live members from the AppTask store keyed
  by parentToolCallId rather than buildSwarmGroups, which filters out
  single-member groups. A resume-only AgentSwarm now streams its live
  progress before the final result arrives. The badge counter still
  relies on buildSwarmGroups's filter.

* fix(web): carry streamed subagent text into swarm rows

Swarm subagents that stream normal assistant output accumulate it on
AppTask.text (text-kind taskProgress), not outputLines. The new live
member map was dropping `text`, so a still-composing subagent rendered
an empty / stale row until the structured result arrived.

- Add `text` to SwarmMember and thread it through buildSwarmGroups and
  swarmMembersByToolCall.
- SwarmTool: prefer member.text for both the row activity preview and
  the expanded body; fall back to outputLines / summary.
- Tests cover text propagation through both helpers.

* fix(web): merge swarm result rows and fall back to raw output

Address the two latest swarm review comments:

- Rows: when a parsed agent_swarm_result coexists with live AppTasks
  (which the detail panel also depends on), the inline card previously
  only rendered the live members. Interrupted swarms can carry
  state="not_started" / outcome="aborted" result entries for items that
  never spawned a task; those rows were dropped until a refresh cleared
  the live tasks. Extract the row model into buildSwarmCardRows and
  merge result-only aborted/not-started rows with the live member rows.
- Fallback: when the tool is no longer running but produced no
  structured result (argument validation, parser miss, or legacy
  legacy transcript), render the raw tool output instead of
  "Waiting for subagents…" so the final text / failure cause is
  visible to the user.

* fix(web): parse swarm result subagent bodies defensively

Producer writes subagent body unescaped, so a subagent that analyzes or
emits an AgentSwarm snippet can include a literal "</subagent>" inside
its body. The non-greedy regex treated that as the row close and truncated
the body in the result-only path (post-refresh where the AppTask store is
gone).

Rewrite the parser to scan opening tags, then resolve each row's body as
everything up to the last "</subagent>" before the next row's opening tag
(or document end), preserving embedded close-tag strings. Add tests for a
literal "</subagent>" within a single body and across sibling rows.

* fix(web): only count top-level subagent result tags

A subagent body that contains a literal `<subagent ...>` tag — for
example emitting an AgentSwarm/XML snippet — was being pre-collected as
another result row, splitting the real body and producing duplicate /
bogus subagents after refresh where the AppTask store is gone.

Rewrite parseSubagents with a depth-tracking tokenizer: scan every
`<subagent ...>` / `</subagent>` token in order, push a real row frame
only at the outermost level, and treat openings / closings while nested
inside another body as body text. Drop the now-inaccurate "literal
</subagent> without matching open" regression tests; replace with tests
that verify a balanced nested snippet stays inside the parent body and
does not register as a separate row.

.changeset/web-swarm-inline-tool-card.md

@@ -0,0 +1,5 @@
+---
+"@moonshot-ai/kimi-code": minor
+---
+
+web: Replace the swarm footer with a single inline tool card that shows live subagent progress and the aggregated result, and keep swarm badges stable after refresh.