fix: use --card background for delete modal card (prevent transparency)

.idea/workspace.xml

@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="SELECTIVE" />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="8aabfa36-f79a-419b-a800-ad803609afdf" name="Changes" comment="">
+      <change beforePath="$PROJECT_DIR$/src/telegram/bot-message-context.ts" beforeDir="false" afterPath="$PROJECT_DIR$/src/telegram/bot-message-context.ts" afterDir="false" />
+    </list>
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
+  </component>
+  <component name="ProjectColorInfo"><![CDATA[{
+  "associatedIndex": 0
+}]]></component>
+  <component name="ProjectId" id="38tIWYARoMdAQ0Uv2tn7ef0s1B6" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent"><![CDATA[{
+  "keyToString": {
+    "ModuleVcsDetector.initialDetectionPerformed": "true",
+    "RunOnceActivity.ShowReadmeOnStart": "true",
+    "RunOnceActivity.git.unshallow": "true",
+    "git-widget-placeholder": "main",
+    "last_opened_file_path": "/Users/clawdbot/git_repos/moltbot/moltbot",
+    "node.js.detected.package.eslint": "true",
+    "node.js.detected.package.tslint": "true",
+    "node.js.selected.package.eslint": "(autodetect)",
+    "node.js.selected.package.tslint": "(autodetect)",
+    "nodejs_package_manager_path": "pnpm",
+    "vue.rearranger.settings.migration": "true"
+  }
+}]]></component>
+  <component name="SharedIndexes">
+    <attachedChunks>
+      <set>
+        <option value="bundled-js-predefined-d6986cc7102b-b598e85cdad2-JavaScript-WS-252.25557.126" />
+      </set>
+    </attachedChunks>
+  </component>
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="8aabfa36-f79a-419b-a800-ad803609afdf" name="Changes" comment="" />
+      <created>1769612472859</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1769612472859</updated>
+      <workItem from="1769612474080" duration="4679000" />
+    </task>
+    <servers />
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="3" />
+  </component>
+</project>

patches/chat-delete-session.patch

@@ -43,7 +43,7 @@ index 27dfe62d1..9eb7f2150 100644
 +}
 +
 +.chat-delete-card {
-+  background: var(--surface);
++  background: var(--card);
 +  border: 1px solid var(--border);
 +  border-radius: 8px;
 +  padding: 20px 24px;

src/sessions/session-key-utils.test.ts

@@ -0,0 +1,38 @@
+import { describe, expect, it } from "vitest";
+import { extractThreadIdFromSessionKey } from "./session-key-utils.js";
+
+describe("extractThreadIdFromSessionKey", () => {
+  it("extracts topic ID from Telegram session key", () => {
+    expect(extractThreadIdFromSessionKey("agent:main:telegram:group:123:topic:7")).toBe("7");
+  });
+
+  it("extracts thread ID from session key", () => {
+    expect(extractThreadIdFromSessionKey("agent:main:discord:channel:123:thread:456")).toBe("456");
+  });
+
+  it("returns null for non-topic session keys", () => {
+    expect(extractThreadIdFromSessionKey("agent:main:telegram:group:123")).toBeNull();
+  });
+
+  it("handles empty input", () => {
+    expect(extractThreadIdFromSessionKey(null)).toBeNull();
+    expect(extractThreadIdFromSessionKey(undefined)).toBeNull();
+    expect(extractThreadIdFromSessionKey("")).toBeNull();
+  });
+
+  it("handles session key without agent prefix", () => {
+    expect(extractThreadIdFromSessionKey("telegram:group:123:topic:7")).toBe("7");
+  });
+
+  it("extracts last thread/topic marker if multiple present", () => {
+    expect(extractThreadIdFromSessionKey("agent:main:telegram:topic:1:thread:99")).toBe("99");
+  });
+
+  it("handles whitespace around thread ID", () => {
+    expect(extractThreadIdFromSessionKey("agent:main:telegram:group:123:topic: 42 ")).toBe("42");
+  });
+
+  it("returns null when thread marker is at the end without ID", () => {
+    expect(extractThreadIdFromSessionKey("agent:main:telegram:group:123:topic:")).toBeNull();
+  });
+});

ui/src/styles/components.css

@@ -1514,7 +1514,7 @@
 }
 
 .chat-delete-card {
-  background: var(--surface);
+  background: var(--card);
   border: 1px solid var(--border);
   border-radius: 8px;
   padding: 20px 24px;