fix(ai): clear stale clarification on new turn and use green tool color

Clear _queuedClarification at the start of sendPrompt to prevent
text from a previous turn leaking into the next clarification read.
Also change getUserClarification tool icon color to green (#6bc76b)
to match Read file tool bubbles.

Author: abose

src-node/claude-code-agent.js

@@ -148,6 +148,9 @@ exports.sendPrompt = async function (params) {
         currentSessionId = null;
     }
 
+    // Clear any stale clarification from a previous turn
+    _queuedClarification = null;
+
     // Cancel any in-flight query
     if (currentAbortController) {
         currentAbortController.abort();

src/core-ai/AIChatPanel.js

@@ -942,7 +942,7 @@ define(function (require, exports, module) {
         "mcp__phoenix-editor__controlEditor":       { icon: "fa-solid fa-code", color: "#6bc76b", label: Strings.AI_CHAT_TOOL_CONTROL_EDITOR },
         "mcp__phoenix-editor__resizeLivePreview":   { icon: "fa-solid fa-arrows-left-right", color: "#66bb6a", label: Strings.AI_CHAT_TOOL_RESIZE_PREVIEW },
         "mcp__phoenix-editor__wait":                { icon: "fa-solid fa-hourglass-half", color: "#adb9bd", label: Strings.AI_CHAT_TOOL_WAIT },
-        "mcp__phoenix-editor__getUserClarification": { icon: "fa-solid fa-comment-dots", color: "#e8a838", label: Strings.AI_CHAT_TOOL_CLARIFICATION },
+        "mcp__phoenix-editor__getUserClarification": { icon: "fa-solid fa-comment-dots", color: "#6bc76b", label: Strings.AI_CHAT_TOOL_CLARIFICATION },
         TodoWrite: { icon: "fa-solid fa-list-check", color: "#66bb6a", label: Strings.AI_CHAT_TOOL_TASKS },
         AskUserQuestion: { icon: "fa-solid fa-circle-question", color: "#66bb6a", label: Strings.AI_CHAT_TOOL_QUESTION },
         Task: { icon: "fa-solid fa-diagram-project", color: "#6b9eff", label: Strings.AI_CHAT_TOOL_TASK }