feat(ai-widget): Copy Cover Letter button + draft_content plumbing

- ChatMessage now carries draftContent?: string (from API draft_content field)
- ChatResponse interface extended with draft_content?: string
- sendMessage populates draftContent on assistant messages
- confirmSaveProfile uses draftContent directly (no more regex parsing)
- 'Save to Profile' button guards on msg.draftContent being truthy
- New blue 'Copy Cover Letter' button for cover_letter_draft messages:
    copies msg.draftContent to clipboard, marks message confirmed,
    appends a confirmation assistant message
- 'Open Cover Letter Tool →' nav link still shows alongside the Copy button
  via the existing navUrl('open_cover_letter') path

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/AiChatWidget.tsx

@@ -9,10 +9,12 @@ interface ChatMessage {
   intent?: string;
   status?: string;
   suggestedAction?: string;
-  /** Semantic category: ticket_created | ticket_pending | kb_results | usage_info | navigation */
+  /** Semantic category: ticket_created | ticket_pending | kb_results | usage_info | navigation | profile_draft | cover_letter_draft */
   actionType?: string;
   /** Original user text — stored so ticket confirm has a description to send */
   userQuery?: string;
+  /** Raw generated content (profile draft, cover letter body) for save/copy actions */
+  draftContent?: string;
   /** True once the user has clicked the confirm/action button on this message */
   confirmed?: boolean;
 }
@@ -29,6 +31,8 @@ interface ChatResponse {
   status?: string;
   suggested_action?: string;
   action_type?: string;
+  /** Raw generated text (profile draft, cover letter body) for copy/save actions */
+  draft_content?: string;
 }
 
 function statusLabel(status?: string): string | null {
@@ -195,6 +199,7 @@ export function AiChatWidget() {
         status: data.status,
         suggestedAction: data.suggested_action,
         actionType: data.action_type,
+        draftContent: data.draft_content,
         userQuery: text,
         confirmed: false,
       };
@@ -280,10 +285,8 @@ export function AiChatWidget() {
   };
 
   /** Called when user clicks "Save to Profile" on a profile_draft message. */
-  const confirmSaveProfile = async (msgIdx: number, draftText: string) => {
-    // Extract just the quoted improved text if it's wrapped in our "Here's an improved..." message
-    const quotedMatch = draftText.match(/"([^"]+)"/);
-    const cleanDraft = quotedMatch ? quotedMatch[1] : draftText;
+  const confirmSaveProfile = async (msgIdx: number, draftContent: string) => {
+    const cleanDraft = draftContent;
 
     setMessages((prev) => prev.map((m, i) => (i === msgIdx ? { ...m, confirmed: true } : m)));
     setIsLoading(true);
@@ -591,9 +594,9 @@ export function AiChatWidget() {
                       </Show>
 
                       {/* Save-profile button — for profile_draft messages */}
-                      <Show when={msg.actionType === "profile_draft"}>
+                      <Show when={msg.actionType === "profile_draft" && msg.draftContent}>
                         <button
-                          onClick={() => confirmSaveProfile(idx(), msg.content)}
+                          onClick={() => confirmSaveProfile(idx(), msg.draftContent!)}
                           style={{
                             display: "inline-flex",
                             "align-items": "center",
@@ -610,6 +613,42 @@ export function AiChatWidget() {
                           Save to Profile
                         </button>
                       </Show>
+
+                      {/* Copy button — for cover_letter_draft messages */}
+                      <Show when={msg.actionType === "cover_letter_draft" && msg.draftContent}>
+                        <button
+                          onClick={() => {
+                            navigator.clipboard.writeText(msg.draftContent!).then(() => {
+                              // Mark confirmed so the buttons disappear after copy
+                              setMessages((prev) =>
+                                prev.map((m, i) => (i === idx() ? { ...m, confirmed: true } : m))
+                              );
+                              setMessages((prev) => [
+                                ...prev,
+                                {
+                                  role: "assistant" as const,
+                                  content: "Cover letter copied to clipboard! Paste it into your application and tailor it to the specific role.",
+                                  confirmed: true,
+                                },
+                              ]);
+                            });
+                          }}
+                          style={{
+                            display: "inline-flex",
+                            "align-items": "center",
+                            padding: "5px 12px",
+                            background: "#2563EB",
+                            border: "none",
+                            "border-radius": "20px",
+                            color: "#fff",
+                            "font-size": "11px",
+                            "font-weight": "600",
+                            cursor: "pointer",
+                          }}
+                        >
+                          Copy Cover Letter
+                        </button>
+                      </Show>
                     </div>
                   </Show>
                 </>