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/settings/service.go

@@ -101,6 +101,9 @@ func (s *Service) UpsertBot(ctx context.Context, botID string, req UpsertRequest
 	if req.PersistFullToolResults != nil {
 		current.PersistFullToolResults = *req.PersistFullToolResults
 	}
+	if req.ShowToolCallsInIM != nil {
+		current.ShowToolCallsInIM = *req.ShowToolCallsInIM
+	}
 	timezoneValue := pgtype.Text{}
 	if req.Timezone != nil {
 		normalized, err := normalizeOptionalTimezone(*req.Timezone)
@@ -215,6 +218,7 @@ func (s *Service) UpsertBot(ctx context.Context, botID string, req UpsertRequest
 		TranscriptionModelID:   transcriptionModelUUID,
 		BrowserContextID:       browserContextUUID,
 		PersistFullToolResults: current.PersistFullToolResults,
+		ShowToolCallsInIm:      current.ShowToolCallsInIM,
 	})
 	if err != nil {
 		return Settings{}, err
@@ -310,6 +314,7 @@ func normalizeBotSettingsReadRow(row sqlc.GetSettingsByBotIDRow) Settings {
 		row.TranscriptionModelID,
 		row.BrowserContextID,
 		row.PersistFullToolResults,
+		row.ShowToolCallsInIm,
 	)
 }
 
@@ -335,6 +340,7 @@ func normalizeBotSettingsWriteRow(row sqlc.UpsertBotSettingsRow) Settings {
 		row.TranscriptionModelID,
 		row.BrowserContextID,
 		row.PersistFullToolResults,
+		row.ShowToolCallsInIm,
 	)
 }
 
@@ -359,6 +365,7 @@ func normalizeBotSettingsFields(
 	transcriptionModelID pgtype.UUID,
 	browserContextID pgtype.UUID,
 	persistFullToolResults bool,
+	showToolCallsInIM bool,
 ) Settings {
 	settings := normalizeBotSetting(language, "", reasoningEnabled, reasoningEffort, heartbeatEnabled, heartbeatInterval, compactionEnabled, compactionThreshold, compactionRatio)
 	if timezone.Valid {
@@ -395,6 +402,7 @@ func normalizeBotSettingsFields(
 		settings.BrowserContextID = uuid.UUID(browserContextID.Bytes).String()
 	}
 	settings.PersistFullToolResults = persistFullToolResults
+	settings.ShowToolCallsInIM = showToolCallsInIM
 	return settings
 }