Feat/channel tool feedback animation (sipeed#2569)

* feat(channels): unify tool feedback animation across discord telegram and feishu

* fix(tool-feedback): unify fallback and single-message delivery

* fix(channels): finalize tool feedback in place

* fix ci

* feat: improve tool feedback

Author: lxowalle

cmd/picoclaw/internal/auth/wecom_test.go

@@ -3,6 +3,7 @@ package auth
 import (
 	"bytes"
 	"context"
+	"net"
 	"net/http"
 	"net/http/httptest"
 	"net/url"
@@ -19,6 +20,19 @@ import (
 	"github.com/sipeed/picoclaw/pkg/config"
 )
 
+func newIPv4TestServer(t *testing.T, handler http.Handler) *httptest.Server {
+	t.Helper()
+
+	server := httptest.NewUnstartedServer(handler)
+	listener, err := net.Listen("tcp4", "127.0.0.1:0")
+	require.NoError(t, err)
+
+	server.Listener = listener
+	server.Start()
+	t.Cleanup(server.Close)
+	return server
+}
+
 func TestNewWeComCommand(t *testing.T) {
 	cmd := newWeComCommand()
 
@@ -53,15 +67,14 @@ func TestBuildWeComQRCodePageURL(t *testing.T) {
 }
 
 func TestFetchWeComQRCode(t *testing.T) {
-	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	server := newIPv4TestServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		assert.Equal(t, "/generate", r.URL.Path)
 		assert.Equal(t, wecomQRSourceID, r.URL.Query().Get("source"))
 		assert.Equal(t, wecomQRSourceID, r.URL.Query().Get("sourceID"))
 		assert.Equal(t, strconv.Itoa(wecomPlatformCode()), r.URL.Query().Get("plat"))
 		w.Header().Set("Content-Type", "application/json")
 		_, _ = w.Write([]byte(`{"data":{"scode":"scode-1","auth_url":"https://example.com/qr"}}`))
 	}))
-	defer server.Close()
 
 	opts := normalizeWeComQRFlowOptions(wecomQRFlowOptions{
 		HTTPClient:  server.Client(),
@@ -78,7 +91,7 @@ func TestFetchWeComQRCode(t *testing.T) {
 func TestPollWeComQRCodeResult(t *testing.T) {
 	var calls atomic.Int32
 
-	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+	server := newIPv4TestServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		call := calls.Add(1)
 		assert.Equal(t, "/query", r.URL.Path)
 		assert.Equal(t, "scode-1", r.URL.Query().Get("scode"))
@@ -92,7 +105,6 @@ func TestPollWeComQRCodeResult(t *testing.T) {
 			_, _ = w.Write([]byte(`{"data":{"status":"success","bot_info":{"botid":"bot-1","secret":"secret-1"}}}`))
 		}
 	}))
-	defer server.Close()
 
 	var output bytes.Buffer
 	opts := normalizeWeComQRFlowOptions(wecomQRFlowOptions{

docs/channels/discord/README.md

@@ -8,26 +8,56 @@ Discord is a free voice, video, and text chat application designed for communiti
 
 ```json
 {
+  "agents": {
+    "defaults": {
+      "tool_feedback": {
+        "enabled": true,
+        "max_args_length": 300
+      }
+    }
+  },
   "channel_list": {
     "discord": {
       "enabled": true,
       "type": "discord",
       "token": "YOUR_BOT_TOKEN",
       "allow_from": ["YOUR_USER_ID"],
+      "placeholder": {
+        "enabled": true,
+        "text": ["Thinking... 💭"]
+      },
       "group_trigger": {
         "mention_only": false
-      }
+      },
+      "reasoning_channel_id": ""
     }
   }
 }
 ```
 
-| Field         | Type   | Required | Description                                                                 |
-| ------------- | ------ | -------- | --------------------------------------------------------------------------- |
-| enabled       | bool   | Yes      | Whether to enable the Discord channel                                       |
-| token         | string | Yes      | Discord Bot Token                                                           |
-| allow_from    | array  | No       | Allowlist of user IDs; empty means all users are allowed                    |
-| group_trigger | object | No       | Group trigger settings (example: { "mention_only": false })                 |
+| Field                | Type   | Required | Description                                                                 |
+| -------------------- | ------ | -------- | --------------------------------------------------------------------------- |
+| enabled              | bool   | Yes      | Whether to enable the Discord channel                                       |
+| token                | string | Yes      | Discord Bot Token                                                           |
+| allow_from           | array  | No       | Allowlist of user IDs; empty means all users are allowed                    |
+| placeholder          | object | No       | Placeholder message config shown while the agent is working                 |
+| group_trigger        | object | No       | Group trigger settings (example: { "mention_only": false })                 |
+| reasoning_channel_id | string | No       | Optional target channel ID for reasoning/thinking output                    |
+
+## Visible Execution Feedback
+
+Discord can show three different kinds of "working" feedback:
+
+1. Typing indicator: automatic, no extra config needed.
+2. Placeholder message: enable `channel_list.discord.placeholder.enabled` to send a visible `Thinking...` message that is later edited into the final reply.
+3. Tool execution feedback: enable `agents.defaults.tool_feedback.enabled` to send a short message before each tool call, for example:
+
+```text
+🔧 `web_search`
+Checking the latest PicoClaw release notes before I answer.
+```
+
+If you only see `Bot is typing`, check that `placeholder.enabled` or `tool_feedback.enabled` is actually set in your runtime config.
 
 ## Setup
 

pkg/agent/loop.go

@@ -112,6 +112,7 @@ const (
 	pendingTurnPrefix          = "pending-"
 	metadataKeyMessageKind     = "message_kind"
 	messageKindThought         = "thought"
+	messageKindToolFeedback    = "tool_feedback"
 	metadataKeyAccountID       = "account_id"
 	metadataKeyGuildID         = "guild_id"
 	metadataKeyTeamID          = "team_id"