Merge branch 'agent/scheduler-silent-mode'

- light theme colors, fix chat cancel logic, add clear-context feedback, polish thinking step icon/order, and align channels empty state with the web console

.github/scripts/register-releases.mjs

@@ -74,6 +74,12 @@ for (const base of fs.readdirSync(dir)) {
   } else if (/x64\.zip$/.test(base)) {
     platform = 'mac-x64'
     slot = 'upd'
+  } else if (/win7.*\.exe$/i.test(base)) {
+    // Legacy Win7/8 build (Electron 22). Its artifactName carries a "win7"
+    // segment so it never collides with the standard win exe in the same
+    // v<version>/ folder — just like arm64/x64 distinguish the two mac builds.
+    platform = 'win-legacy'
+    slot = 'main'
   } else if (/\.exe$/.test(base)) {
     platform = 'win'
     slot = 'main'

.github/workflows/publish-desktop.yml

@@ -1,154 +0,0 @@
-name: Publish Desktop
-
-# STAGE 3 of the decoupled release pipeline: PROMOTE a built + notarized version
-# to "live". By this point:
-#   - stage 1 (Release Desktop) built the installers, mirrored them to R2, and
-#     registered them in D1 as unpublished (is_latest=0);
-#   - stage 2 (local desktop/build/notarize-dmg.sh) notarized + stapled the mac
-#     dmgs and re-uploaded the stapled bytes to R2.
-#
-# This workflow, triggered manually with the version to publish:
-#   1. pulls every artifact for that version back from R2,
-#   2. recomputes sha512 from the real (stapled) bytes and updates D1,
-#   3. flips is_latest=1 for that version (clearing the previous latest per
-#      platform) UNLESS it's a pre-release, which is recorded but never latest,
-#   4. creates/updates the GitHub Release and attaches the installers.
-#
-# Run only after the mac dmgs for this version are notarized + re-uploaded.
-on:
-  workflow_dispatch:
-    inputs:
-      version:
-        description: "Version to publish (e.g. 1.2.0). Must already be built + notarized."
-        type: string
-        required: true
-      make_latest:
-        description: "Mark this version as latest on the site (uncheck for a dry re-hash only)."
-        type: boolean
-        default: true
-      github_release:
-        description: "Create/update the GitHub Release and attach installers."
-        type: boolean
-        default: true
-
-permissions:
-  contents: write
-
-jobs:
-  publish:
-    name: Publish ${{ github.event.inputs.version }}
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Guard on Cloudflare secrets
-        id: guard
-        env:
-          CF_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-        run: |
-          if [ -z "$CF_TOKEN" ]; then
-            echo "::error::CLOUDFLARE_API_TOKEN not set — cannot publish."
-            exit 1
-          fi
-
-      - name: Resolve version artifacts from D1
-        id: rows
-        env:
-          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-          VER: ${{ github.event.inputs.version }}
-        run: |
-          # The build stage inserted one row per artifact with filename = v<VER>/<base>.
-          # Read them back so we know exactly which objects to pull from R2.
-          out="$(npx --yes wrangler@latest d1 execute cow-desktop --remote --json \
-            --command "SELECT platform, filename, update_filename FROM releases WHERE version = '${VER}';")"
-          echo "$out"
-          echo "$out" | node -e '
-            const fs = require("fs");
-            const data = JSON.parse(fs.readFileSync(0, "utf8"));
-            const rows = (Array.isArray(data) ? data : [data])
-              .flatMap(r => (r.results || []));
-            if (!rows.length) {
-              console.error("No D1 rows for this version — did stage 1 (build) run?");
-              process.exit(1);
-            }
-            fs.writeFileSync(process.env.GITHUB_OUTPUT, "count=" + rows.length + "\n", { flag: "a" });
-            fs.writeFileSync("rows.json", JSON.stringify(rows));
-          '
-
-      - name: Download version artifacts from R2
-        env:
-          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-          R2_BUCKET: ${{ vars.R2_BUCKET != '' && vars.R2_BUCKET || 'cow-skills' }}
-        run: |
-          mkdir -p dist
-          # Pull BOTH the manual-download file (filename: dmg/exe) and the mac
-          # auto-update file (update_filename: zip) for every row. Keys are
-          # "v<VER>/<base>"; the R2 key is "desktop/<key>".
-          for key in $(node -e 'JSON.parse(require("fs").readFileSync("rows.json")).forEach(r => { if (r.filename) console.log(r.filename); if (r.update_filename) console.log(r.update_filename); })'); do
-            base="$(basename "$key")"
-            r2key="desktop/${key}"
-            echo "==> Downloading r2://${R2_BUCKET}/${r2key} -> dist/${base}"
-            npx --yes wrangler@latest r2 object get "${R2_BUCKET}/${r2key}" \
-              --file "dist/${base}" --remote
-          done
-          echo "Downloaded:"; ls -la dist
-
-      - name: Reminder — mac dmgs must be notarized before publishing
-        run: |
-          # Stapling can only be validated on macOS (xcrun stapler validate),
-          # which this Linux runner doesn't have. The authoritative check runs in
-          # stage 2 (desktop/build/notarize-dmg.sh) before re-uploading to R2.
-          # This step is just a loud reminder in the log.
-          echo "::notice::Publishing assumes the mac dmgs pulled from R2 are already notarized + stapled (stage 2). If you skipped stage 2, users will hit Gatekeeper warnings."
-          ls -la dist/*.dmg 2>/dev/null || echo "(no dmg in this version — win-only publish)"
-
-      - name: Update D1 (recompute sha512 + set latest)
-        env:
-          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
-          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
-          VER: ${{ github.event.inputs.version }}
-          MAKE_LATEST: ${{ github.event.inputs.make_latest }}
-        run: |
-          # Pre-releases (e.g. 1.2.0-beta / -rc.1 / -test) are recorded but never
-          # become latest, so the site keeps serving the last stable build.
-          case "$VER" in
-            *-*) is_pre=1 ;;
-            *)   is_pre=0 ;;
-          esac
-          if [ "$MAKE_LATEST" = "true" ] && [ "$is_pre" = "0" ]; then
-            latest_flag="--latest"; echo "==> Publishing $VER as latest."
-          else
-            latest_flag=""; echo "==> Publishing $VER without latest flag (pre-release or dry re-hash)."
-          fi
-
-          # Re-hash the real (stapled) bytes and re-store every row with both the
-          # dmg (manual) and mac zip (auto-update) columns. Same script as the
-          # build stage; --latest also clears the previous latest per platform.
-          node .github/scripts/register-releases.mjs --dir dist --version "$VER" --sql d1.sql $latest_flag
-          echo "==> D1 statements:"; cat d1.sql
-          npx --yes wrangler@latest d1 execute cow-desktop --remote --file d1.sql
-
-      - name: Create/update GitHub Release and attach installers
-        if: github.event.inputs.github_release == 'true'
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          VER: ${{ github.event.inputs.version }}
-        run: |
-          tag="v${VER}"
-          case "$VER" in
-            *-*) prerelease="--prerelease" ;;
-            *)   prerelease="" ;;
-          esac
-          if ! gh release view "$tag" --repo "$GITHUB_REPOSITORY" >/dev/null 2>&1; then
-            gh release create "$tag" --repo "$GITHUB_REPOSITORY" \
-              --title "$tag" --generate-notes $prerelease
-          fi
-          # --clobber so re-runs overwrite the stapled/updated assets. The mac
-          # zip is the auto-update artifact; attach it too so the GitHub Release
-          # is a complete mirror (nullglob avoids errors when a type is absent).
-          shopt -s nullglob
-          gh release upload "$tag" dist/*.dmg dist/*.zip dist/*.exe \
-            --repo "$GITHUB_REPOSITORY" --clobber

.github/workflows/release-win7.yml

@@ -0,0 +1,230 @@
+name: Release Desktop (Win7 legacy)
+
+# One-off / on-demand build for legacy Windows 7 / 8 / 8.1 users.
+#
+# The main release pipeline (release.yml) ships Electron 33 (Chromium 130+) and
+# a PyInstaller backend built with Python 3.11 — NEITHER runs on Windows 7,
+# which is why those users hit "不是有效的 Win32 应用程序" when launching the exe.
+#
+# To support Win7 we must pin BOTH halves to the last versions that still
+# target it:
+#   - Electron 22.3.27  (Chromium 108, last major to support Win7/8/8.1)
+#   - Python  3.8        (last CPython to support Win7)
+#
+# This is a SEPARATE, manually-triggered workflow so it never disturbs the main
+# matrix. It produces a (signed, when SIGNTOOL_* secrets exist) NSIS installer,
+# then — exactly like the main pipeline — uploads it to R2 and registers a
+# release row in D1 as platform=win-legacy with is_latest=0 (UNPUBLISHED: it
+# stays invisible until promoted, so it can't accidentally get served to Win10
+# users). Because it's stamped with the SAME version as the standard release,
+# the download page shows both Windows builds under one version row, and the
+# /update feed serves each build to its own clients. Delete this file whenever
+# legacy Windows support is no longer worth maintaining — the main pipeline is
+# unaffected.
+#
+# IMPORTANT for end users: Win7 must have SP1 + update KB2533623 (or the rollup
+# KB4457144) installed, otherwise the Python 3.8 backend still fails to start.
+
+on:
+  workflow_dispatch:
+    inputs:
+      version:
+        description: "Version to stamp — MUST match the standard release (e.g. 2.1.3), so the download page merges both Windows builds into one version row."
+        type: string
+        default: "0.0.0"
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Build Windows x64 (Win7 legacy)
+    runs-on: windows-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # Python 3.8 is the last CPython that supports Windows 7. A backend built
+      # with it (via PyInstaller) still runs on Win7 even though the CI host is
+      # Server 2022 — PyInstaller's bootloader targets the interpreter's minimum
+      # OS, not the build machine's.
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.8"
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      - name: Build Python backend (PyInstaller, Python 3.8)
+        shell: bash
+        run: |
+          python -m pip install --upgrade pip
+          # Most deps are unpinned, so pip auto-picks the newest Python-3.8 wheel.
+          # But a few are pinned to versions with NO 3.8 wheel and must be relaxed
+          # for this legacy build. We rewrite them into a throwaway requirements
+          # file so the repo's source stays untouched (main pipeline keeps its
+          # pins). playwright 1.48.0 is the last release with a cp38 wheel.
+          sed 's/^playwright==.*/playwright==1.48.0/' \
+            desktop/build/requirements-desktop.txt > /tmp/requirements-win7.txt
+          pip install -r /tmp/requirements-win7.txt
+          pip install pyinstaller
+          # Run from repo root so the spec's relative datas resolve correctly.
+          pyinstaller desktop/build/cowagent-backend.spec \
+            --noconfirm \
+            --distpath desktop/build/dist \
+            --workpath desktop/build/build-work
+
+      - name: Install desktop deps
+        working-directory: desktop
+        run: npm ci
+
+      - name: Write version into package.json
+        working-directory: desktop
+        shell: bash
+        run: npm version "${{ github.event.inputs.version }}" --no-git-tag-version --allow-same-version
+
+      # Downgrade Electron to the last Win7-capable major (22). --no-save keeps
+      # this out of package.json so the repo's committed deps stay on Electron 33
+      # for the main pipeline. electron-builder reads the installed Electron
+      # version from node_modules, so this is all that's needed to package v22.
+      - name: Pin Electron to 22 (last Win7-capable)
+        working-directory: desktop
+        run: npm install --no-save electron@22.3.27
+
+      - name: Compile (vite + tsc)
+        working-directory: desktop
+        shell: bash
+        run: npm run build
+
+      # Same signing setup as the main pipeline: download the signtool CLI (URL
+      # from a repo variable so nothing is hardcoded in a public workflow). Only
+      # runs when a URL is configured; otherwise the build stays unsigned but
+      # still succeeds. SIGNTOOL_PATH is consumed by electron-builder.win.js.
+      - name: Download Windows signing CLI
+        if: vars.SIGNTOOL_CLI_URL != ''
+        shell: bash
+        env:
+          SIGNTOOL_CLI_URL: ${{ vars.SIGNTOOL_CLI_URL }}
+        run: |
+          mkdir -p "$RUNNER_TEMP/signtool"
+          curl -fsSL "$SIGNTOOL_CLI_URL" -o "$RUNNER_TEMP/signtool/cli.zip"
+          unzip -o "$RUNNER_TEMP/signtool/cli.zip" -d "$RUNNER_TEMP/signtool" >/dev/null
+          exe="$(find "$RUNNER_TEMP/signtool" -type f -iname 'signtool*.exe' | head -n1)"
+          if [ -z "$exe" ]; then
+            echo "signtool.exe not found in downloaded archive" >&2
+            find "$RUNNER_TEMP/signtool" -type f >&2
+            exit 1
+          fi
+          echo "SIGNTOOL_PATH=$(cygpath -w "$exe")" >> "$GITHUB_ENV"
+          echo "resolved signtool: $exe"
+
+      # NSIS x64 build. --config electron-builder.win.js wires the SAME signing
+      # hook the main pipeline uses (signs app + backend + installer via the
+      # signtool CLI). When SIGNTOOL_* aren't set the hook just skips and the
+      # installer is still produced (unsigned). --publish never emits the exe
+      # without touching any feed. Invoke via node (not npx) to avoid the
+      # Windows npx.cmd wrapper returning early (see release.yml).
+      #
+      # -c.win.artifactName injects a "win7" segment into the file name
+      # (CowAgent-Setup-<ver>-win7-x64.exe). That's exactly how the two mac
+      # builds differ by ${arch}: it keeps the legacy exe from colliding with
+      # the standard win exe in the same v<version>/ folder, and lets
+      # register-releases.mjs map it to the win-legacy platform by name.
+      - name: Build installer (electron-builder, Electron 22)
+        working-directory: desktop
+        shell: bash
+        env:
+          SIGNTOOL_ACCESS_KEY: ${{ secrets.SIGNTOOL_ACCESS_KEY }}
+          SIGNTOOL_ACCESS_SECRET: ${{ secrets.SIGNTOOL_ACCESS_SECRET }}
+          SIGNTOOL_CERT_CODE: ${{ secrets.SIGNTOOL_CERT_CODE }}
+          COW_SIGN_DRY_RUN: ${{ vars.COW_SIGN_DRY_RUN }}
+        run: |
+          node node_modules/electron-builder/cli.js --win --x64 \
+            --config electron-builder.win.js \
+            -c.win.artifactName='${productName}-Setup-${version}-win7-${arch}.${ext}' \
+            --publish never
+
+      # Collect the installer + its blockmap (differential updates). The .yml
+      # feed is NOT uploaded: the /update Function generates it dynamically from
+      # D1 (same as the main pipeline), so it isn't needed here.
+      - name: Upload installer artifact
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: cowagent-win7-x64
+          path: |
+            desktop/release/*.exe
+            desktop/release/*.blockmap
+          if-no-files-found: warn
+          retention-days: 7
+
+  # Publish to R2 + D1, exactly like the main pipeline's publish job: a SEPARATE
+  # ubuntu-latest job (NO setup-node) so it uses the runner's Node 22+ and
+  # wrangler@latest works (the build job pins Node 20 for Electron 22).
+  #
+  # The legacy exe lands in the SAME desktop/v<version>/ folder as the standard
+  # build — its "win7" name segment keeps them distinct — and register-releases
+  # writes a win-legacy row (is_latest=0, unpublished; promote it later via the
+  # publish workflow). Because the version matches the standard release, the
+  # download page merges both Windows builds into one version row.
+  publish:
+    name: Publish to R2 + D1
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Guard on Cloudflare secrets
+        id: guard
+        env:
+          CF_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+        run: |
+          if [ -n "$CF_TOKEN" ]; then
+            echo "enabled=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "enabled=false" >> "$GITHUB_OUTPUT"
+            echo "::notice::CLOUDFLARE_API_TOKEN not set — skipping R2/D1 publish (use the artifact instead)."
+          fi
+
+      - name: Download build artifact
+        if: steps.guard.outputs.enabled == 'true'
+        uses: actions/download-artifact@v4
+        with:
+          name: cowagent-win7-x64
+          path: dist
+
+      - name: Upload installer to R2
+        if: steps.guard.outputs.enabled == 'true'
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          R2_BUCKET: ${{ vars.R2_BUCKET != '' && vars.R2_BUCKET || 'cow-skills' }}
+          VER: ${{ github.event.inputs.version }}
+        run: |
+          shopt -s nullglob
+          for f in dist/*.exe dist/*.blockmap; do
+            base="$(basename "$f")"
+            key="desktop/v${VER}/${base}"
+            echo "==> Uploading $base -> r2://${R2_BUCKET}/${key}"
+            npx --yes wrangler@latest r2 object put "${R2_BUCKET}/${key}" \
+              --file "$f" --remote
+            echo "==> Download URL: https://cdn.cowagent.ai/${key}"
+          done
+
+      # Register the win-legacy row in D1 (is_latest=0). register-releases.mjs
+      # maps the win7-named exe to platform=win-legacy; filename is v<ver>/<exe>
+      # relative to R2_PUBLIC_BASE (=.../desktop), matching the upload key.
+      - name: Register release row in D1
+        if: steps.guard.outputs.enabled == 'true'
+        env:
+          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          VER: ${{ github.event.inputs.version }}
+        run: |
+          node .github/scripts/register-releases.mjs --dir dist --version "$VER" --sql d1.sql
+          echo "==> D1 statements:"; cat d1.sql
+          npx --yes wrangler@latest d1 execute cow-desktop --remote --file d1.sql

agent/tools/__init__.py

@@ -90,20 +90,14 @@ FileSave = _optional_tools.get('FileSave')
 Terminal = _optional_tools.get('Terminal')
 
 
-# BrowserTool (requires playwright)
+# BrowserTool: playwright is soft-imported inside browser_service, so this
+# import always succeeds even without playwright. Readiness (playwright pkg /
+# system Chrome / downloaded Chromium) is checked at call time in BrowserTool.
 def _import_browser_tool():
     from common.log import logger
     try:
         from agent.tools.browser.browser_tool import BrowserTool
         return BrowserTool
-    except ImportError as e:
-        logger.info(
-            f"[Tools] BrowserTool not loaded - missing dependency: {e}\n"
-            f"  To enable browser tool, run:\n"
-            f"    pip install playwright\n"
-            f"    playwright install chromium"
-        )
-        return None
     except Exception as e:
         logger.error(f"[Tools] BrowserTool failed to load: {e}")
         return None

agent/tools/browser/browser_service.py

@@ -463,7 +463,18 @@ class BrowserService:
             headless_cfg = self._config.get("headless")
             self._headless = headless_cfg if headless_cfg is not None else _should_use_headless()
 
-        launch_args = ["--disable-dev-shm-usage"]
+        launch_args = [
+            "--disable-dev-shm-usage",
+            # Trim first-launch overhead: skip the first-run wizard, the default
+            # browser prompt, and Chrome's background/component network chatter.
+            # These have no effect on page interaction but noticeably speed up
+            # cold starts and each navigation.
+            "--no-first-run",
+            "--no-default-browser-check",
+            "--disable-background-networking",
+            "--disable-component-update",
+            "--disable-features=Translate,OptimizationHints",
+        ]
         if self._headless:
             launch_args.append("--no-sandbox")
 
@@ -733,11 +744,15 @@ class BrowserService:
         except Exception as e:
             return {"error": f"Navigation failed: {e}"}
 
+        # SPAs keep long-lived connections (websockets, polling, analytics) and
+        # rarely reach true "networkidle", so waiting the full timeout is wasted
+        # time. domcontentloaded already gives a usable DOM; give the page a
+        # short grace period for initial render/XHR, then proceed.
         try:
-            page.wait_for_load_state("networkidle", timeout=8000)
+            page.wait_for_load_state("networkidle", timeout=1500)
         except Exception:
             pass
-        page.wait_for_timeout(500)
+        page.wait_for_timeout(300)
 
         try:
             title = page.title()

agent/tools/scheduler/integration.py

@@ -255,6 +255,12 @@ def _execute_agent_task(task: dict, agent_bridge) -> bool:
                 logger.error(f"[Scheduler] Task {task['id']}: No result from agent execution")
                 return True  # agent ran but produced nothing; don't loop
 
+            if action.get("silent", False):
+                logger.info(
+                    f"[Scheduler] Task {task['id']} executed successfully in silent mode"
+                )
+                return True
+
             from channel.channel_factory import create_channel
             channel = create_channel(channel_type)
             if not channel:

agent/tools/scheduler/scheduler_tool.py

@@ -64,6 +64,11 @@ class SchedulerTool(BaseTool):
             "schedule_value": {
                 "type": "string",
                 "description": "调度值: cron表达式/间隔秒数/时间(+5s,+10m,+1h或ISO格式)"
+            },
+            "silent": {
+                "type": "boolean",
+                "default": False,
+                "description": "Silent mode (default false): when true, the task runs normally but its result is not pushed. Set true only when the user explicitly says they don't need the result; reminder, notification and broadcast tasks must keep it false"
             }
         },
         "required": ["action"]
@@ -184,6 +189,9 @@ class SchedulerTool(BaseTool):
                 "channel_type": self.config.get("channel_type", "unknown"),
                 "notify_session_id": notify_session_id,
             }
+            # silent only applies to ai_task; fixed messages always deliver
+            if kwargs.get("silent", False):
+                action["silent"] = True
         
         # 针对钉钉单聊，额外存储 sender_staff_id
         msg = context.kwargs.get("msg")
@@ -216,14 +224,17 @@ class SchedulerTool(BaseTool):
             content_desc = f"💬 固定消息: {message}"
         else:
             content_desc = f"🤖 AI任务: {ai_task}"
-        
+
+        # Warn the user at creation time so a mistaken silent flag is easy to spot
+        silent_desc = "\n🔇 静默模式: 执行后不会推送结果" if action.get("silent") else ""
+
         return (
             f"✅ 定时任务创建成功\n\n"
             f"📋 任务ID: {task_id}\n"
             f"📝 名称: {name}\n"
             f"⏰ 调度: {schedule_desc}\n"
             f"👤 接收者: {receiver_desc}\n"
-            f"{content_desc}\n"
+            f"{content_desc}{silent_desc}\n"
             f"🕐 下次执行: {next_run.strftime('%Y-%m-%d %H:%M:%S') if next_run else '未知'}"
         )
     

agent/tools/tool_manager.py

@@ -152,14 +152,7 @@ class ToolManager:
                                 except ImportError as e:
                                     # Handle missing dependencies with helpful messages
                                     error_msg = str(e)
-                                    if "playwright" in error_msg:
-                                        logger.warning(
-                                            f"[ToolManager] Browser tool not loaded - missing dependencies.\n"
-                                            f"  To enable browser tool, run:\n"
-                                            f"    pip install playwright\n"
-                                            f"    playwright install chromium"
-                                        )
-                                    elif "markdownify" in error_msg:
+                                    if "markdownify" in error_msg:
                                         logger.warning(
                                             f"[ToolManager] {cls.__name__} not loaded - missing markdownify.\n"
                                             f"  Install with: pip install markdownify"
@@ -222,14 +215,7 @@ class ToolManager:
                             except ImportError as e:
                                 # Handle missing dependencies with helpful messages
                                 error_msg = str(e)
-                                if "playwright" in error_msg:
-                                    logger.warning(
-                                        f"[ToolManager] Browser tool not loaded - missing dependencies.\n"
-                                        f"  To enable browser tool, run:\n"
-                                        f"    pip install playwright\n"
-                                        f"    playwright install chromium"
-                                    )
-                                elif "markdownify" in error_msg:
+                                if "markdownify" in error_msg:
                                     logger.warning(
                                         f"[ToolManager] {cls.__name__} not loaded - missing markdownify.\n"
                                         f"  Install with: pip install markdownify"
@@ -261,14 +247,7 @@ class ToolManager:
             # If there are missing tools, record warnings
             if missing_tools:
                 for tool_name in missing_tools:
-                    if tool_name == "browser":
-                        logger.warning(
-                            f"[ToolManager] Browser tool is configured but not loaded.\n"
-                            f"  To enable browser tool, run:\n"
-                            f"    pip install playwright\n"
-                            f"    playwright install chromium"
-                        )
-                    elif tool_name == "google_search":
+                    if tool_name == "google_search":
                         logger.warning(
                             f"[ToolManager] Google Search tool is configured but may need API key.\n"
                             f"  Get API key from: https://serper.dev\n"

desktop/src/main/updater.ts

@@ -1,5 +1,6 @@
 import { app, BrowserWindow } from 'electron'
 import fs from 'fs'
+import os from 'os'
 import path from 'path'
 // electron-updater is CommonJS: its members live on module.exports, with no
 // meaningful default export. Under module=commonjs + esModuleInterop, a named
@@ -19,12 +20,26 @@ export type UpdateStatus =
 
 let getWindow: () => BrowserWindow | null = () => null
 
+// Legacy Windows (7/8/8.1) runs the separate Electron-22 build, which must
+// update to OTHER legacy builds — never the standard build (Electron 33 won't
+// launch on Win7). The update Function serves that build under /update/legacy/.
+// We detect the old OS at runtime (os.release() reports the Windows NT version:
+// 6.1 = Win7, 6.2/6.3 = Win8/8.1, 10.x = Win10/11) rather than via a build
+// flag, so the same source serves the right feed on whatever it runs on.
+function isLegacyWindows(): boolean {
+  if (process.platform !== 'win32') return false
+  const major = Number((os.release() || '').split('.')[0])
+  // NT 6.x = Win7/8/8.1; NT 10.x = Win10/11. Old = major < 10.
+  return Number.isFinite(major) && major < 10
+}
+
 // The update feed. Both entries hit the same Pages Function
 // (https://cowagent.ai/update/); the ?lang=zh query tells it to 302 installer
 // downloads to the China CDN mirror instead of R2. The feed metadata is
 // identical either way, so we can freely switch the feed URL between attempts
-// to fall back from one download origin to the other.
-const FEED_BASE = 'https://cowagent.ai/update/'
+// to fall back from one download origin to the other. Legacy Windows appends a
+// /legacy/ segment so it gets the win-legacy release instead of the standard.
+const FEED_BASE = 'https://cowagent.ai/update/' + (isLegacyWindows() ? 'legacy/' : '')
 const feedUrlFor = (china: boolean) => (china ? `${FEED_BASE}?lang=zh` : FEED_BASE)
 
 // Which origin the current session prefers, derived from the app UI language

desktop/src/renderer/src/components/Markdown.tsx

@@ -100,29 +100,53 @@ md.renderer.rules.fence = function (tokens, idx, options, env, self) {
 
 interface MarkdownProps {
   content: string
+  /**
+   * Intercept clicks on internal document links (relative `.md` hrefs). When
+   * provided, such links open in-app instead of being handed to the OS. Used by
+   * the knowledge viewer so index links open the target doc rather than firing
+   * an "application cannot be opened (-120)" error in Electron.
+   */
+  onInternalLink?: (href: string) => void
 }
 
-const Markdown: React.FC<MarkdownProps> = ({ content }) => {
+const Markdown: React.FC<MarkdownProps> = ({ content, onInternalLink }) => {
   const rootRef = useRef<HTMLDivElement>(null)
 
   const html = useMemo(() => md.render(content || ''), [content])
 
-  // Delegate copy clicks on code blocks (buttons are injected as raw HTML).
-  const handleClick = useCallback((e: React.MouseEvent<HTMLDivElement>) => {
-    const target = e.target as HTMLElement
-    const btn = target.closest('.code-copy-btn') as HTMLElement | null
-    if (!btn) return
-    const pre = btn.closest('.code-block-wrapper')?.querySelector('pre')
-    if (!pre) return
-    navigator.clipboard.writeText(pre.textContent || '')
-    const original = btn.textContent
-    btn.textContent = t('msg_copied')
-    btn.classList.add('copied')
-    setTimeout(() => {
-      btn.textContent = original
-      btn.classList.remove('copied')
-    }, 1600)
-  }, [])
+  // Delegate clicks: copy buttons on code blocks, and internal doc links.
+  const handleClick = useCallback(
+    (e: React.MouseEvent<HTMLDivElement>) => {
+      const target = e.target as HTMLElement
+
+      // Internal knowledge links (relative *.md), when a handler is provided.
+      if (onInternalLink) {
+        const a = target.closest('a') as HTMLAnchorElement | null
+        if (a) {
+          const href = a.getAttribute('href') || ''
+          if (href.endsWith('.md') && !/^https?:\/\//i.test(href)) {
+            e.preventDefault()
+            onInternalLink(href)
+            return
+          }
+        }
+      }
+
+      const btn = target.closest('.code-copy-btn') as HTMLElement | null
+      if (!btn) return
+      const pre = btn.closest('.code-block-wrapper')?.querySelector('pre')
+      if (!pre) return
+      navigator.clipboard.writeText(pre.textContent || '')
+      const original = btn.textContent
+      btn.textContent = t('msg_copied')
+      btn.classList.add('copied')
+      setTimeout(() => {
+        btn.textContent = original
+        btn.classList.remove('copied')
+      }, 1600)
+    },
+    [onInternalLink]
+  )
 
   return (
     <div

desktop/src/renderer/src/components/MessageBubble.tsx

@@ -121,8 +121,15 @@ const MessageBubble: React.FC<MessageBubbleProps> = ({ message, onRegenerate, on
               muted, separated from the final answer by a dashed divider. */}
           {(hasSteps || hasLiveReasoning) && (
             <div className="mb-2.5 pb-2 border-b border-dashed border-default">
-              {hasLiveReasoning && <ThinkingStep content={message.reasoning!} streaming />}
               {hasSteps && <MessageSteps steps={message.steps!} />}
+              {/* Live reasoning is the current, not-yet-committed thinking, so it
+                  must render after all committed steps (tools/thinking), not at
+                  the very top of the bubble. */}
+              {hasLiveReasoning && (
+                <div className={hasSteps ? 'mt-1' : ''}>
+                  <ThinkingStep content={message.reasoning!} streaming />
+                </div>
+              )}
             </div>
           )}
 

desktop/src/renderer/src/components/MessageSteps.tsx

@@ -1,6 +1,7 @@
 import React, { useState } from 'react'
-import { ChevronRight, Loader2, Check, X, Brain } from 'lucide-react'
+import { ChevronRight, Loader2, Check, X, Lightbulb } from 'lucide-react'
 import type { MessageStep } from '../types'
+import { t } from '../i18n'
 import Markdown from './Markdown'
 
 /**
@@ -16,8 +17,8 @@ const ThinkingStep: React.FC<{ content: string; streaming?: boolean }> = ({ cont
         className="flex items-center gap-1.5 cursor-pointer hover:text-content-secondary select-none transition-colors"
         onClick={() => setExpanded((v) => !v)}
       >
-        <Brain size={12} className="flex-shrink-0" />
-        <span className="flex-1">{streaming ? 'Thinking…' : 'Thought for a moment'}</span>
+        <Lightbulb size={13} className={`flex-shrink-0 text-amber-400 ${streaming ? 'animate-pulse' : ''}`} />
+        <span className="flex-1">{streaming ? t('thinking_in_progress') : t('thinking_done')}</span>
         <ChevronRight size={11} className={`transition-transform opacity-50 ${expanded ? 'rotate-90' : ''}`} />
       </div>
       {expanded && (

desktop/src/renderer/src/i18n.ts

@@ -129,14 +129,17 @@ const translations: Record<string, Record<string, string>> = {
     msg_cancelled: '已中止',
     msg_self_learned: '自主学习',
     msg_stop: '停止',
+    thinking_in_progress: '思考中…',
+    thinking_done: '已深度思考',
     chat_clear_context: '清除上下文',
+    context_cleared: '— 以上内容已从上下文中移除 —',
     chat_load_earlier: '加载更早的消息',
     chat_send: '发送',
     chat_attach: '添加附件',
     slash_hint: '输入 / 查看命令',
     chat_welcome: '有什么可以帮你的？',
     chat_empty_hint: '发送一条消息开始对话',
-    welcome_subtitle: '我可以帮你解答问题、管理你的电脑、创建并执行技能，\n还能通过长期记忆不断成长。',
+    welcome_subtitle: '我可以帮你解决问题、管理你的电脑、创建并执行技能，\n还能通过长期记忆不断成长。',
     example_sys_title: '系统管理',
     example_sys_text: '查看工作空间里有哪些文件',
     example_task_title: '定时任务',
@@ -288,6 +291,8 @@ const translations: Record<string, Record<string, string>> = {
     channels_connected_section: '已连接',
     channels_available_section: '可添加',
     channels_empty_connected: '暂无已连接的通道',
+    channels_empty: '暂未接入任何通道',
+    channels_empty_desc: '点击右上角「接入通道」按钮，即可将 CowAgent 接入微信、飞书、钉钉等消息通道',
     channels_qr_hint: '该通道通过扫码登录，请前往 Web 控制台完成扫码连接',
     channels_save_ok: '已保存',
     channels_save_error: '保存失败',
@@ -512,7 +517,10 @@ const translations: Record<string, Record<string, string>> = {
     msg_cancelled: 'Cancelled',
     msg_self_learned: 'Self-learned',
     msg_stop: 'Stop',
+    thinking_in_progress: 'Thinking…',
+    thinking_done: 'Thought',
     chat_clear_context: 'Clear context',
+    context_cleared: '— Context above has been cleared —',
     chat_load_earlier: 'Load earlier messages',
     chat_send: 'Send',
     chat_attach: 'Attach file',
@@ -671,6 +679,8 @@ const translations: Record<string, Record<string, string>> = {
     channels_connected_section: 'Connected',
     channels_available_section: 'Available',
     channels_empty_connected: 'No connected channels yet',
+    channels_empty: 'No channels connected',
+    channels_empty_desc: 'Click "Add channel" above to connect CowAgent to WeChat, Feishu, DingTalk and more',
     channels_qr_hint: 'This channel uses QR login — please connect it from the Web console',
     channels_save_ok: 'Saved',
     channels_save_error: 'Failed to save',

desktop/src/renderer/src/index.css

@@ -27,21 +27,21 @@
   --danger-border: rgba(239, 68, 68, 0.3);
   --info: #3b82f6;
 
-  /* Light theme — layered neutral surfaces */
-  --bg-base: #fafafa;        /* app background */
+  /* Light theme — aligned with the web console: gray surfaces/borders + slate text */
+  --bg-base: #f9fafb;        /* app background (gray-50) */
   --bg-surface: #ffffff;     /* panels, cards */
-  --bg-surface-2: #f4f4f5;   /* nested surfaces, hover fills */
+  --bg-surface-2: #f3f4f6;   /* nested surfaces, hover fills (gray-100) */
   --bg-elevated: #ffffff;    /* popovers, menus, modals */
-  --bg-inset: #f4f4f5;       /* inputs, code blocks */
+  --bg-inset: #f3f4f6;       /* inputs, code blocks (gray-100) */
 
-  --text-primary: #18181b;   /* headings, primary text (contrast > 4.5:1) */
-  --text-secondary: #52525b; /* body, labels */
-  --text-tertiary: #71717a;  /* hints, captions */
-  --text-disabled: #a1a1aa;
+  --text-primary: #1e293b;   /* headings, primary text (slate-800) */
+  --text-secondary: #475569; /* body, labels (slate-600) */
+  --text-tertiary: #64748b;  /* hints, captions (slate-500) */
+  --text-disabled: #94a3b8;  /* slate-400 */
 
-  --border-default: #e4e4e7;
-  --border-strong: #d4d4d8;
-  --border-subtle: #f0f0f1;
+  --border-default: #e5e7eb; /* gray-200 (web console border) */
+  --border-strong: #d1d5db;  /* gray-300 */
+  --border-subtle: #f3f4f6;  /* gray-100 */
 
   --overlay: rgba(0, 0, 0, 0.4);
   --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);

desktop/src/renderer/src/pages/ChannelsPage.tsx

@@ -13,6 +13,7 @@ import {
   Headset,
   Hash,
   AtSign,
+  RadioTower,
 } from 'lucide-react'
 import { t, localizedLabel } from '../i18n'
 import apiClient from '../api/client'
@@ -147,7 +148,25 @@ const ChannelsPage: React.FC<ChannelsPageProps> = ({ baseUrl }) => {
           ) : (
             <div className="space-y-3">
               {connected.length === 0 && !addOpen ? (
-                <p className="text-sm text-content-tertiary py-2">{t('channels_empty_connected')}</p>
+                <div className="flex flex-col items-center justify-center text-center py-16 px-6">
+                  <span className="w-16 h-16 rounded-2xl bg-info/10 flex items-center justify-center mb-4">
+                    <RadioTower size={26} className="text-info" />
+                  </span>
+                  <p className="text-content-secondary font-medium">{t('channels_empty')}</p>
+                  <p className="text-sm text-content-tertiary mt-1.5 max-w-sm leading-relaxed">
+                    {t('channels_empty_desc')}
+                  </p>
+                  {available.length > 0 && (
+                    <div className="mt-5">
+                      <Btn variant="primary" onClick={openAdd}>
+                        <span className="flex items-center gap-1.5">
+                          <Plus size={15} />
+                          {t('channels_add')}
+                        </span>
+                      </Btn>
+                    </div>
+                  )}
+                </div>
               ) : (
                 connected.map((ch) => <ChannelCard key={ch.name} channel={ch} onChanged={loadChannels} />)
               )}

desktop/src/renderer/src/pages/ChatPage.tsx

@@ -17,6 +17,7 @@ import apiClient from '../api/client'
 import type { Attachment, ChatMessage } from '../types'
 import { useChatStore } from '../store/chatStore'
 import { useSessionStore } from '../store/sessionStore'
+import { useUIStore } from '../store/uiStore'
 
 interface ChatPageProps {
   baseUrl: string
@@ -54,6 +55,8 @@ const ChatPage: React.FC<ChatPageProps> = ({ baseUrl }) => {
   const deleteMessage = useChatStore((s) => s.deleteMessage)
   const loadHistory = useChatStore((s) => s.loadHistory)
   const ensureSession = useChatStore((s) => s.ensureSession)
+  const clearContext = useChatStore((s) => s.clearContext)
+  const setSessionsCollapsed = useUIStore((s) => s.setSessionsCollapsed)
 
   const messages = session?.messages ?? []
   const isStreaming = session?.isStreaming ?? false
@@ -170,15 +173,14 @@ const ChatPage: React.FC<ChatPageProps> = ({ baseUrl }) => {
     const id = newSession()
     ensureSession(id)
     loadHistory(id, 1)
-  }, [newSession, ensureSession, loadHistory])
+    // Auto-expand the session list so the user sees the new/switched session.
+    setSessionsCollapsed(false)
+  }, [newSession, ensureSession, loadHistory, setSessionsCollapsed])
 
   const handleClearContext = useCallback(async () => {
-    try {
-      await apiClient.clearContext(activeId)
-    } catch {
-      /* ignore */
-    }
-  }, [activeId])
+    await clearContext(activeId)
+    scrollToBottom(true)
+  }, [clearContext, activeId, scrollToBottom])
 
   const handleStop = useCallback(() => cancel(activeId), [cancel, activeId])
 
@@ -242,7 +244,9 @@ const ChatPage: React.FC<ChatPageProps> = ({ baseUrl }) => {
           <div className="flex flex-col items-center justify-center h-full px-6 py-12">
             <img src="./logo.jpg" alt="CowAgent" className="w-16 h-16 rounded-2xl mb-5 shadow-md" />
             <h1 className="text-xl font-semibold text-content mb-2">{t('chat_welcome')}</h1>
-            <p className="text-content-tertiary text-sm text-center max-w-md mb-8">{t('chat_empty_hint')}</p>
+            <p className="text-content-tertiary text-sm text-center max-w-md mb-8 leading-relaxed whitespace-pre-line">
+              {t('welcome_subtitle')}
+            </p>
 
             <div className="grid grid-cols-2 sm:grid-cols-3 gap-3 w-full max-w-2xl">
               {SUGGESTIONS.map(({ key, send, icon: Icon, iconClass, bgClass }) => (
@@ -274,16 +278,30 @@ const ChatPage: React.FC<ChatPageProps> = ({ baseUrl }) => {
           </div>
         ) : (
           <div className="py-3 max-w-3xl mx-auto">
-            {messages.map((msg) => (
-              <MessageBubble
-                key={msg.id}
-                message={msg}
-                onRegenerate={handleRegenerate}
-                onEdit={handleEdit}
-                onDelete={handleDelete}
-                onMediaLoad={handleMediaLoad}
-              />
-            ))}
+            {messages.map((msg) =>
+              msg.kind === 'divider' ? (
+                <div key={msg.id} className="flex items-center gap-3 px-6 py-3 text-content-tertiary">
+                  <span
+                    className="flex-1 h-px"
+                    style={{ background: 'linear-gradient(to right, transparent, var(--border-strong), transparent)' }}
+                  />
+                  <span className="text-xs whitespace-nowrap">{t('context_cleared')}</span>
+                  <span
+                    className="flex-1 h-px"
+                    style={{ background: 'linear-gradient(to right, transparent, var(--border-strong), transparent)' }}
+                  />
+                </div>
+              ) : (
+                <MessageBubble
+                  key={msg.id}
+                  message={msg}
+                  onRegenerate={handleRegenerate}
+                  onEdit={handleEdit}
+                  onDelete={handleDelete}
+                  onMediaLoad={handleMediaLoad}
+                />
+              )
+            )}
             <div ref={bottomRef} />
           </div>
         )}

desktop/src/renderer/src/pages/KnowledgePage.tsx

@@ -49,6 +49,19 @@ const formatSize = (bytes: number): string => {
   return (bytes / (1024 * 1024)).toFixed(1) + ' MB'
 }
 
+// The viewer already shows the doc title above the body, so a leading `# H1`
+// that repeats it looks duplicated. Drop that first H1 (and any blank lines
+// right after it) when it matches the title; leave the body untouched otherwise.
+function stripDuplicateH1(content: string, title: string): string {
+  if (!content) return content
+  const norm = (s: string) => s.trim().toLowerCase()
+  // Skip a leading blank/whitespace region, then match the first `# heading`.
+  const m = content.match(/^\s*#\s+(.+?)\s*(?:\r?\n|$)/)
+  if (!m) return content
+  if (norm(m[1]) !== norm(title)) return content
+  return content.slice(m[0].length).replace(/^\s*\r?\n/, '')
+}
+
 // Flatten the tree into category paths (for destination selectors).
 function categoryPaths(dirs: KnowledgeDir[], parent = ''): string[] {
   const paths: string[] = []
@@ -105,6 +118,48 @@ function firstFile(list: KnowledgeList): { path: string; title: string } | null
   return null
 }
 
+// Find a document by its bare filename anywhere in the tree (root files first,
+// then a DFS). Used to resolve relative `../foo.md` links from index docs.
+function findFileByName(list: KnowledgeList, filename: string): { path: string; title: string } | null {
+  for (const f of list.root_files || []) {
+    if (f.name === filename) return { path: f.name, title: f.title || f.name }
+  }
+  const walk = (dir: KnowledgeDir, prefix: string): { path: string; title: string } | null => {
+    const dirPath = prefix ? `${prefix}/${dir.dir}` : dir.dir
+    for (const f of dir.files) {
+      if (f.name === filename) return { path: `${dirPath}/${f.name}`, title: f.title || f.name }
+    }
+    for (const c of dir.children) {
+      const hit = walk(c, dirPath)
+      if (hit) return hit
+    }
+    return null
+  }
+  for (const d of list.tree || []) {
+    const hit = walk(d, '')
+    if (hit) return hit
+  }
+  return null
+}
+
+// Resolve a relative `.md` link (from a document body) into a knowledge path.
+// Mirrors the web console's bindChatKnowledgeLinks logic: supports
+// `knowledge/…/x.md`, `category/x.md`, and bare/relative `../x.md` (by name).
+function resolveKnowledgeLink(list: KnowledgeList, href: string): { path: string; title: string } | null {
+  const clean = href.split('#')[0].split('?')[0]
+  if (!clean.endsWith('.md')) return null
+  if (clean.startsWith('knowledge/')) {
+    const path = clean.replace(/^knowledge\//, '')
+    return { path, title: findTitle(list, path) }
+  }
+  if (/^[a-z0-9_-]+\/[a-z0-9_.-]+\.md$/i.test(clean) && !clean.startsWith('/') && !clean.startsWith('.')) {
+    return { path: clean, title: findTitle(list, clean) }
+  }
+  // Relative/other path: fall back to matching by filename.
+  const filename = clean.split('/').pop() || clean
+  return findFileByName(list, filename)
+}
+
 // Resolve a document's display title from its path, falling back to the stem.
 function findTitle(list: KnowledgeList, path: string): string {
   const fallback = path.split('/').pop()?.replace(/\.md$/i, '') || path
@@ -167,7 +222,7 @@ const KnowledgePage: React.FC<KnowledgePageProps> = ({ baseUrl }) => {
     setContent('')
     try {
       const res = await apiClient.readKnowledge(path)
-      setContent(res.content || '')
+      setContent(stripDuplicateH1(res.content || '', title))
     } catch {
       setContent(`> ${t('knowledge_doc_load_error')}`)
     } finally {
@@ -175,6 +230,17 @@ const KnowledgePage: React.FC<KnowledgePageProps> = ({ baseUrl }) => {
     }
   }, [])
 
+  // Open an internal knowledge link (relative `.md`) from within a doc body.
+  // Falls back silently when the target can't be resolved in the current tree.
+  const openInternalLink = useCallback(
+    (href: string) => {
+      if (!data) return
+      const hit = resolveKnowledgeLink(data, href)
+      if (hit) void openDoc(hit.path, hit.title)
+    },
+    [data, openDoc]
+  )
+
   // Reload the tree. When targetPath is given, open it; otherwise keep the
   // currently open doc (or open the first one on the initial load).
   const refresh = useCallback(
@@ -519,7 +585,7 @@ const KnowledgePage: React.FC<KnowledgePageProps> = ({ baseUrl }) => {
                     <Loader2 size={16} className="animate-spin mr-2" />
                   </div>
                 ) : (
-                  <Markdown content={content} />
+                  <Markdown content={content} onInternalLink={openInternalLink} />
                 )}
               </div>
             )}

desktop/src/renderer/src/store/chatStore.ts

@@ -31,6 +31,7 @@ interface ChatState {
   deleteMessage: (sid: string, userSeq: number, cascade: boolean) => Promise<void>
 
   loadHistory: (sid: string, page?: number) => Promise<void>
+  clearContext: (sid: string) => Promise<boolean>
   clearLocal: (sid: string) => void
 }
 
@@ -397,6 +398,25 @@ export const useChatStore = create<ChatState>((set, get) => {
     cancel: async (sid) => {
       const s = get().sessions[sid]
       if (!s?.requestId) return
+      // Optimistically stop the UI right away: mark the last assistant bubble
+      // cancelled, free the input, and tear down the local SSE stream so no
+      // further deltas render after the user hit stop. The backend still gets
+      // the cancel request to abort the running agent task.
+      patchMessages(sid, (msgs) => {
+        for (let i = msgs.length - 1; i >= 0; i--) {
+          if (msgs[i].role === 'assistant') {
+            msgs[i] = { ...msgs[i], isCancelled: true, isStreaming: false }
+            break
+          }
+        }
+        return [...msgs]
+      })
+      patchSession(sid, { isStreaming: false, requestId: null })
+      const es = streams[sid]
+      if (es) {
+        es.close()
+        delete streams[sid]
+      }
       try {
         await apiClient.cancel({ requestId: s.requestId, sessionId: sid })
       } catch {
@@ -476,6 +496,28 @@ export const useChatStore = create<ChatState>((set, get) => {
       }
     },
 
+    clearContext: async (sid) => {
+      try {
+        const res = await apiClient.clearContext(sid)
+        if (res.status !== 'success') return false
+        // Append a visual divider so the user sees the context was cleared
+        // (mirrors the web console's context-divider).
+        patchMessages(sid, (msgs) => [
+          ...msgs,
+          {
+            id: uid('divider'),
+            role: 'system',
+            kind: 'divider',
+            content: '',
+            timestamp: Date.now() / 1000,
+          },
+        ])
+        return true
+      } catch {
+        return false
+      }
+    },
+
     clearLocal: (sid) => {
       const es = streams[sid]
       if (es) {

desktop/src/renderer/src/store/uiStore.ts

@@ -12,6 +12,7 @@ interface UIState {
   /** Session list panel collapsed (hidden) vs expanded. */
   sessionsCollapsed: boolean
   toggleSessions: () => void
+  setSessionsCollapsed: (v: boolean) => void
 
   /** Currently active session id (Chat page). */
   activeSessionId: string | null
@@ -42,6 +43,10 @@ export const useUIStore = create<UIState>((set) => ({
       localStorage.setItem(SESSIONS_KEY, next ? '1' : '0')
       return { sessionsCollapsed: next }
     }),
+  setSessionsCollapsed: (v) => {
+    localStorage.setItem(SESSIONS_KEY, v ? '1' : '0')
+    set({ sessionsCollapsed: v })
+  },
 
   activeSessionId: null,
   setActiveSessionId: (id) => set({ activeSessionId: id }),

desktop/src/renderer/src/types.ts

@@ -50,7 +50,7 @@ export interface BackendStatusEvent {
 // Chat / messages / streaming
 // ============================================================
 
-export type Role = 'user' | 'assistant'
+export type Role = 'user' | 'assistant' | 'system'
 
 /** A single ordered step inside an assistant turn (matches backend history). */
 export interface MessageStep {
@@ -83,8 +83,8 @@ export interface ChatMessage {
   /** Sequence numbers from backend (for delete/regenerate). */
   userSeq?: number
   botSeq?: number
-  /** Self-evolution bubble flag. */
-  kind?: 'evolution'
+  /** Self-evolution bubble flag; 'divider' renders a context-cleared separator. */
+  kind?: 'evolution' | 'divider'
   extras?: Record<string, unknown>
   isStreaming?: boolean
   isCancelled?: boolean

tests/test_scheduler_silent.py

@@ -0,0 +1,92 @@
+"""Regression tests for silent scheduled agent tasks."""
+
+import os
+import sys
+import unittest
+from types import SimpleNamespace
+from unittest.mock import patch
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), ".."))
+
+from agent.tools.scheduler.integration import _execute_agent_task
+from agent.tools.scheduler.scheduler_tool import SchedulerTool
+
+
+class _Context(dict):
+    kwargs = {}
+
+
+class _TaskStore:
+    def __init__(self):
+        self.added = []
+
+    def add_task(self, task):
+        self.added.append(task)
+
+
+class _AgentBridge:
+    def __init__(self, content="maintenance complete"):
+        self.content = content
+        self.calls = []
+
+    def agent_reply(self, task_description, **kwargs):
+        self.calls.append((task_description, kwargs))
+        return SimpleNamespace(content=self.content)
+
+
+class TestSchedulerSilentMode(unittest.TestCase):
+    def test_schema_exposes_silent_for_agent_tasks(self):
+        silent = SchedulerTool.params["properties"]["silent"]
+
+        self.assertEqual(silent["type"], "boolean")
+        self.assertFalse(silent["default"])
+
+    def test_create_persists_silent_on_agent_task(self):
+        tool = SchedulerTool({"channel_type": "web"})
+        store = _TaskStore()
+        tool.task_store = store
+        tool.current_context = _Context(
+            receiver="user-1",
+            session_id="session-1",
+            isgroup=False,
+        )
+
+        result = tool.execute(
+            {
+                "action": "create",
+                "name": "refresh token",
+                "ai_task": "refresh the token",
+                "schedule_type": "interval",
+                "schedule_value": "3000",
+                "silent": True,
+            }
+        )
+
+        self.assertEqual(result.status, "success")
+        self.assertEqual(len(store.added), 1)
+        self.assertIs(store.added[0]["action"]["silent"], True)
+
+    def test_silent_agent_task_executes_without_delivery(self):
+        bridge = _AgentBridge()
+        task = {
+            "id": "task-1",
+            "action": {
+                "type": "agent_task",
+                "task_description": "rotate logs",
+                "receiver": "user-1",
+                "is_group": False,
+                "channel_type": "web",
+                "silent": True,
+            },
+        }
+
+        with patch("channel.channel_factory.create_channel") as create_channel:
+            result = _execute_agent_task(task, bridge)
+
+        self.assertTrue(result)
+        self.assertEqual(len(bridge.calls), 1)
+        create_channel.assert_not_called()
+
+
+if __name__ == "__main__":
+    unittest.main()