diff --git a/vibn-frontend/components/vibn-chat/chat-panel.tsx b/vibn-frontend/components/vibn-chat/chat-panel.tsx
index cadca70..c647203 100644
--- a/vibn-frontend/components/vibn-chat/chat-panel.tsx
+++ b/vibn-frontend/components/vibn-chat/chat-panel.tsx
@@ -26,6 +26,7 @@ import {
   Sparkles,
   Compass,
   Cpu,
+  Paperclip,
 } from "lucide-react";
 import { ProjectIconRail } from "@/components/project/project-icon-rail";
 import {
@@ -1965,118 +1966,6 @@ export function ChatPanel({
           position: "relative",
         }}
       >
-        {/* Chat Mode Toggle */}
-        <div
-          style={{
-            display: "flex",
-            gap: 4,
-            marginBottom: 8,
-            padding: "2px",
-            background: "#f0ede8",
-            borderRadius: 8,
-            border: "1px solid #e8e4dc",
-          }}
-        >
-          <button
-            type="button"
-            onClick={() => setChatMode("vibe")}
-            style={{
-              flex: 1,
-              display: "flex",
-              alignItems: "center",
-              justifyContent: "center",
-              gap: 6,
-              padding: "6px 0",
-              fontSize: "0.72rem",
-              fontWeight: chatMode === "vibe" ? 600 : 500,
-              borderRadius: 6,
-              border: "none",
-              background: chatMode === "vibe" ? "#fff" : "transparent",
-              color: chatMode === "vibe" ? "#3d5afe" : "#6b6560",
-              cursor: "pointer",
-              boxShadow:
-                chatMode === "vibe" ? "0 1px 2px rgba(0,0,0,0.05)" : "none",
-              transition: "all 0.1s ease",
-            }}
-            title="Vibe Code: Fast, iterative coding with immediate live previews."
-          >
-            <Sparkles
-              style={{
-                width: 12,
-                height: 12,
-                color: chatMode === "vibe" ? "#3d5afe" : "#8c8580",
-              }}
-            />
-            <span>Vibe Code</span>
-          </button>
-          <button
-            type="button"
-            onClick={() => setChatMode("collaborate")}
-            style={{
-              flex: 1,
-              display: "flex",
-              alignItems: "center",
-              justifyContent: "center",
-              gap: 6,
-              padding: "6px 0",
-              fontSize: "0.72rem",
-              fontWeight: chatMode === "collaborate" ? 600 : 500,
-              borderRadius: 6,
-              border: "none",
-              background: chatMode === "collaborate" ? "#fff" : "transparent",
-              color: chatMode === "collaborate" ? "#d4a04a" : "#6b6560",
-              cursor: "pointer",
-              boxShadow:
-                chatMode === "collaborate"
-                  ? "0 1px 2px rgba(0,0,0,0.05)"
-                  : "none",
-              transition: "all 0.1s ease",
-            }}
-            title="Architect: Brainstorm, spec out features, and plan architecture without writing code."
-          >
-            <Compass
-              style={{
-                width: 12,
-                height: 12,
-                color: chatMode === "collaborate" ? "#d4a04a" : "#8c8580",
-              }}
-            />
-            <span>Architect</span>
-          </button>
-          <button
-            type="button"
-            onClick={() => setChatMode("delegate")}
-            style={{
-              flex: 1,
-              display: "flex",
-              alignItems: "center",
-              justifyContent: "center",
-              gap: 6,
-              padding: "6px 0",
-              fontSize: "0.72rem",
-              fontWeight: chatMode === "delegate" ? 600 : 500,
-              borderRadius: 6,
-              border: "none",
-              background: chatMode === "delegate" ? "#fff" : "transparent",
-              color: chatMode === "delegate" ? "#2e7d32" : "#6b6560",
-              cursor: "pointer",
-              boxShadow:
-                chatMode === "delegate" ? "0 1px 2px rgba(0,0,0,0.05)" : "none",
-              transition: "all 0.1s ease",
-            }}
-            title="Delegate Offline: Send this task to the background runner to build automatically while you step away."
-          >
-            <Cpu
-              style={{
-                width: 12,
-                height: 12,
-                color: chatMode === "delegate" ? "#2e7d32" : "#8c8580",
-              }}
-            />
-            <span>Delegate</span>
-          </button>
-        </div>
-
         {!mcpToken && (
           <div
             style={{
@@ -2241,13 +2130,13 @@ export function ChatPanel({
             <div
               style={{
                 display: "flex",
+                flexDirection: "column",
                 gap: 8,
-                alignItems: "center",
                 background: "#fff",
-                borderRadius: 10,
+                borderRadius: 12,
                 border: "1px solid #e8e4dc",
-                padding: "8px 10px",
-                boxShadow: "0 1px 3px #1a1a1a05",
+                padding: "10px 12px",
+                boxShadow: "0 2px 6px #1a1a1a08",
               }}
             >
               <textarea
@@ -2258,86 +2147,116 @@ export function ChatPanel({
                 placeholder={
                   sending ? "Esc to stop generating…" : "Ask Vibn AI anything…"
                 }
-                rows={1}
+                rows={3}
                 disabled={!activeThread}
                 style={{
-                  flex: 1,
+                  width: "100%",
                   border: "none",
                   outline: "none",
                   background: "transparent",
-                  fontSize: "0.84rem",
-                  lineHeight: 1.5,
+                  fontSize: "0.86rem",
+                  lineHeight: 1.55,
                   resize: "none",
                   fontFamily: "var(--font-inter),ui-sans-serif,sans-serif",
                   color: "#1a1a1a",
-                  maxHeight: 120,
+                  maxHeight: 240,
                   overflowY: "auto",
                 }}
                 onInput={(e) => {
                   const el = e.currentTarget;
                   const newlines = (el.value.match(/\n/g) || []).length;
-                  // Cache lastNewlines on the DOM element to avoid state re-render lag
                   if ((el as any).lastNewlines !== newlines) {
                     (el as any).lastNewlines = newlines;
                     el.style.height = "auto";
-                    el.style.height = Math.min(el.scrollHeight, 120) + "px";
+                    el.style.height = Math.min(el.scrollHeight, 240) + "px";
                   }
                 }}
               />
-              {selectToggle}
-              {(() => {
-                // While the AI is streaming or running tools, the button
-                // turns into a Stop control. Click → AbortController fires,
-                // server bails between rounds, partial text gets persisted.
-                const isActive = sending;
-                const canSend = !sending && input.trim() && activeThread;
-                return (
+              <div
+                style={{
+                  display: "flex",
+                  alignItems: "center",
+                  justifyContent: "space-between",
+                  paddingTop: 4,
+                }}
+              >
+                <div style={{ display: "flex", gap: 6 }}>
                   <button
                     type="button"
-                    onClick={isActive ? cancelMessage : () => sendMessage()}
-                    disabled={!isActive && !canSend}
-                    aria-label={isActive ? "Stop generating" : "Send message"}
-                    title={isActive ? "Stop generating (Esc)" : "Send"}
+                    onClick={() => {
+                      const fname = window.prompt(
+                        "Enter exact file path to attach (e.g. src/app/page.tsx):",
+                      );
+                      if (fname && fname.trim()) {
+                        setAttachedFiles((prev) => [...prev, fname.trim()]);
+                      }
+                    }}
                     style={{
                       ...COMPOSER_ACTION_BTN_BASE,
-                      background: isActive
-                        ? "#1a1a1a"
-                        : canSend
-                          ? "#1a1a1a"
-                          : "#e8e4dc",
-                      color: isActive || canSend ? "#fff" : "#a09a90",
-                      border: "none",
-                      cursor: isActive || canSend ? "pointer" : "default",
-                      transition: "all 0.15s",
-                      position: "relative",
+                      background: "transparent",
+                      color: "#8c8580",
+                      border: "1px solid transparent",
+                      cursor: "pointer",
+                      transition: "all 0.1s ease",
                     }}
+                    onMouseEnter={(e) => {
+                      e.currentTarget.style.background = "#f0ede8";
+                      e.currentTarget.style.color = "#1a1a1a";
+                    }}
+                    onMouseLeave={(e) => {
+                      e.currentTarget.style.background = "transparent";
+                      e.currentTarget.style.color = "#8c8580";
+                    }}
+                    title="Attach file to context"
                   >
-                    {isActive ? (
-                      <>
-                        <Loader2
-                          style={{
-                            width: 15,
-                            height: 15,
-                            position: "absolute",
-                            opacity: 0.35,
-                          }}
-                          className="animate-spin"
-                        />
-                        <Square
-                          style={{
-                            width: 9,
-                            height: 9,
-                            fill: "#fff",
-                            strokeWidth: 0,
-                          }}
-                        />
-                      </>
-                    ) : (
-                      <Send style={{ width: 15, height: 15 }} />
-                    )}
+                    <Paperclip style={{ width: 14, height: 14 }} />
                   </button>
-                );
-              })()}
+                  {selectToggle}
+                </div>
+                {(() => {
+                  // While the AI is streaming or running tools, the button
+                  // turns into a Stop control. Click → AbortController fires,
+                  // server bails between rounds, partial text gets persisted.
+                  const isActive = sending;
+                  const canSend = !sending && input.trim() && activeThread;
+                  return (
+                    <button
+                      type="button"
+                      onClick={isActive ? cancelMessage : () => sendMessage()}
+                      disabled={!isActive && !canSend}
+                      aria-label={isActive ? "Stop generating" : "Send message"}
+                      title={isActive ? "Stop generating (Esc)" : "Send"}
+                      style={{
+                        ...COMPOSER_ACTION_BTN_BASE,
+                        background: isActive
+                          ? "#1a1a1a"
+                          : canSend
+                            ? "#1a1a1a"
+                            : "#e8e4dc",
+                        color: isActive || canSend ? "#fff" : "#a09a90",
+                        border: "none",
+                        cursor: isActive || canSend ? "pointer" : "not-allowed",
+                        transition: "all 0.15s ease",
+                      }}
+                    >
+                      {isActive ? (
+                        <>
+                          <Square
+                            style={{
+                              width: 11,
+                              height: 11,
+                              fill: "currentColor",
+                              strokeWidth: 3,
+                            }}
+                          />
+                        </>
+                      ) : (
+                        <Send style={{ width: 14, height: 14 }} />
+                      )}
+                    </button>
+                  );
+                })()}
+              </div>
             </div>
           )}
         </ProjectPreviewChatInputWrap>