feat: OpenMesh 基础平台与 MD/PDF 转换技能

- 后端: coworker 智能体框架, WS API, 文件上传, 附件处理
- 前端: Open WebUI, 文件全量走 upload API (含 MD/TXT/JSON 等文本类)
- 技能: md-to-office (pandoc + wkhtmltopdf)
- 修复: 上传文件路径丢失, Agent 搜索浪费, 输出文件跑到 uploads/
- 打包: PyInstaller one-dir, 预打包 pandoc/wkhtmltopdf/chromium

tests/test_connector_registry.py

@@ -0,0 +1,107 @@
+"""UI-Refresh Phase 1 — connector registry metadata (brand color + logo) and the
+not-yet-shipped placeholder descriptors that personas recommend.
+
+The frontend renders any connector by `logo` id + `brand_color` with a neutral fallback, so
+every descriptor must expose both and `/v1/connectors` (i.e. `connector_list`) must surface them.
+"""
+
+from __future__ import annotations
+
+import re
+
+from coworker.connectors import connector_list
+from coworker.connectors.descriptors import (
+    ConnectorDescriptor,
+    get_descriptor,
+    list_descriptors,
+)
+from coworker.secrets import SecretStore
+
+_HEX = re.compile(r"^#[0-9a-fA-F]{6}$")
+
+# Brand colors from the visual mock (ui-mocks/redesign.html). Fallback gray is #6b7280.
+_EXPECTED_BRAND = {
+    "slack": "#611f69",
+    "telegram": "#229ed9",
+    "github": "#1f2328",
+    "datadog": "#632ca6",
+    "salesforce": "#00a1e0",
+    "hubspot": "#ff7a59",
+    "pagerduty": "#06ac38",
+}
+
+# github/hubspot already ship as real connectors here, so only these three are placeholders.
+_PLACEHOLDERS = ("datadog", "salesforce", "pagerduty")
+# Everything a persona may recommend must at least have a descriptor + brand badge.
+_RECOMMENDED = ("github", "datadog", "salesforce", "hubspot", "pagerduty")
+
+
+def test_descriptor_brand_logo(tmp_path):
+    # Every descriptor exposes a hex brand_color and a (string) logo id.
+    for d in list_descriptors():
+        assert _HEX.match(
+            d.brand_color
+        ), f"{d.name} brand_color not hex: {d.brand_color!r}"
+        assert isinstance(d.logo, str)
+
+    # connector_list surfaces both fields per connector, with a valid hex color.
+    secrets = SecretStore(tmp_path / "secrets.json")
+    listed = {c["name"]: c for c in connector_list(secrets)}
+    for c in listed.values():
+        assert _HEX.match(c["brand_color"]), c
+        assert "logo" in c and isinstance(c["logo"], str)
+
+    # The known brand colors + logo ids are populated.
+    for name, color in _EXPECTED_BRAND.items():
+        d = get_descriptor(name)
+        assert d is not None, name
+        assert d.brand_color == color, (name, d.brand_color)
+        assert d.logo == name, (name, d.logo)
+    assert get_descriptor("slack").logo == "slack"
+    assert listed["slack"]["brand_color"] == "#611f69"
+    assert listed["telegram"]["brand_color"] == "#229ed9"
+    # email uses the "email" logo id and the neutral fallback color.
+    assert get_descriptor("email").logo == "email"
+
+    # An unknown/placeholder descriptor with no brand_color set still returns the fallback gray.
+    fallback = ConnectorDescriptor(
+        name="zzz_unknown",
+        title="Unknown",
+        icon="?",
+        blurb="",
+        auth="none",
+        two_way=False,
+        fields=[],
+        instructions=[],
+    )
+    assert fallback.brand_color == "#6b7280"
+    assert fallback.logo == ""
+
+
+def test_placeholder_connectors_listed(tmp_path):
+    secrets = SecretStore(tmp_path / "secrets.json")
+    listed = {c["name"]: c for c in connector_list(secrets)}
+
+    # Every persona-recommended connector has a descriptor + brand badge so the UI can render it.
+    for name in _RECOMMENDED:
+        d = get_descriptor(name)
+        assert d is not None, name
+        assert _HEX.match(d.brand_color) and d.logo == name
+        assert name in listed
+
+    # The genuinely-not-yet-shipped ones are available:false / connected:false placeholders with
+    # no connect path (no required fields, no validate).
+    for name in _PLACEHOLDERS:
+        d = get_descriptor(name)
+        assert d.available is False, name
+        assert d.validate is None, name
+        assert not any(f.required for f in d.fields), name
+        c = listed[name]
+        assert c["available"] is False
+        assert c["connected"] is False
+        assert c["enabled"] is False
+        assert c["fields"] == []
+
+    # github/hubspot ship as real connectors (available:true) — not placeholders.
+    assert listed["github"]["available"] is True
+    assert listed["hubspot"]["available"] is True