feat(channel): structured tool-call IM display with edit-in-place

Introduce a new `show_tool_calls_in_im` bot setting plus a full overhaul of
how tool calls are surfaced in IM channels:

- Add per-bot setting + migration (0072) and expose through settings API /
  handlers / frontend SDK.
- Introduce a `toolCallDroppingStream` wrapper that filters tool_call_* events
  when the setting is off, keeping the rest of the stream intact.
- Add a shared `ToolCallPresentation` model (Header / Body blocks / Footer)
  with plain and Markdown renderers, and a per-tool formatter registry that
  produces rich output (e.g. `web_search` link lists, `list` directory
  previews, `exec` stdout/stderr tails) instead of raw JSON dumps.
- High-capability adapters (Telegram, Feishu, Matrix, Slack, Discord) now
  flush pre-text and then send ONE tool-call message per call, editing it
  in-place from `running` to `completed` / `failed`; mapping from callID to
  platform message ID is tracked per stream, with a fallback to a new
  message if the edit fails. Low-capability adapters (WeCom, QQ, DingTalk)
  keep posting a single final message, but now benefit from the same rich
  per-tool formatting.
- Suppress the early duplicate `EventToolCallStart` (from
  `sdk.ToolInputStartPart`) so that the SDK's final `StreamToolCallPart`
  remains the single source of truth for tool call start, preventing
  duplicated "running" bubbles in IM.
- Stop auto-populating `InputSummary` / `ResultSummary` after a per-tool
  formatter runs, which previously leaked the raw JSON result as a
  fallback footer underneath the formatted body.

Add regression tests for the formatters, the Markdown renderer, the
edit-in-place flow on Telegram/Matrix, and the JSON-leak guard on `list`.

internal/channel/adapters/qq/stream.go

@@ -62,13 +62,23 @@ func (s *qqOutboundStream) Push(ctx context.Context, event channel.PreparedStrea
 		channel.StreamEventPhaseStart,
 		channel.StreamEventPhaseEnd,
 		channel.StreamEventToolCallStart,
-		channel.StreamEventToolCallEnd,
 		channel.StreamEventAgentStart,
 		channel.StreamEventAgentEnd,
 		channel.StreamEventProcessingStarted,
 		channel.StreamEventProcessingCompleted,
 		channel.StreamEventProcessingFailed:
 		return nil
+	case channel.StreamEventToolCallEnd:
+		text := strings.TrimSpace(channel.RenderToolCallMessage(channel.BuildToolCallEnd(event.ToolCall)))
+		if text == "" {
+			return nil
+		}
+		return s.send(ctx, channel.PreparedOutboundMessage{
+			Target: s.target,
+			Message: channel.PreparedMessage{
+				Message: channel.Message{Format: channel.MessageFormatPlain, Text: text, Reply: s.reply},
+			},
+		})
 	case channel.StreamEventDelta:
 		if event.Phase == channel.StreamPhaseReasoning || event.Delta == "" {
 			return nil