fix(boot): preserve native Ctrl+K text editing during URL prefill rework (#4961)

static/boot.js

@@ -1753,6 +1753,9 @@ document.addEventListener('keydown',async e=>{
     }
   }
   if((e.metaKey||e.ctrlKey)&&e.key==='k'){
+    const t=e.target;
+    const isText=t&&(t.tagName==='INPUT'||t.tagName==='TEXTAREA'||t.isContentEditable);
+    if(isText) return;
     e.preventDefault();
     // If the current session has no messages AND nothing is in flight, just focus
     // the composer rather than creating another empty session that will clutter

tests/test_issue5099_ctrl_k_text_input_guard.py

@@ -0,0 +1,55 @@
+"""Static-analysis tests for #5099 (Ctrl+K must not steal kill-line in text fields).
+
+Emacs-adjacent users expect Ctrl+K to kill to end-of-line while the composer
+or other editable fields are focused. Cmd/Ctrl+K should still create a new chat
+when focus is outside text inputs, matching the existing Ctrl+B guard pattern.
+"""
+from pathlib import Path
+
+BOOT_JS = (Path(__file__).parent.parent / "static" / "boot.js").read_text(encoding="utf-8")
+
+
+def _ctrl_k_branch_window() -> str:
+    idx = BOOT_JS.find("(e.metaKey||e.ctrlKey)&&e.key==='k'")
+    assert idx >= 0, "Cmd/Ctrl+K handler not found in boot.js"
+    return BOOT_JS[idx:idx + 1500]
+
+
+class TestIssue5099CtrlKTextInputGuard:
+    def test_ctrl_k_skips_text_inputs(self):
+        branch = _ctrl_k_branch_window()
+        assert "tagName==='INPUT'" in branch
+        assert "tagName==='TEXTAREA'" in branch
+        assert "isContentEditable" in branch
+        assert "if(isText) return" in branch
+
+    def test_ctrl_k_prevent_default_after_text_guard(self):
+        branch = _ctrl_k_branch_window()
+        guard_idx = branch.find("if(isText) return")
+        prevent_idx = branch.find("e.preventDefault()")
+        assert guard_idx >= 0 and prevent_idx >= 0, (
+            "Ctrl+K must guard text inputs before calling preventDefault()"
+        )
+        assert guard_idx < prevent_idx, (
+            "preventDefault() must not run before the text-input early return"
+        )
+
+    def test_ctrl_k_guard_matches_ctrl_b_idiom(self):
+        ctrl_b_idx = BOOT_JS.find("(e.key==='b'||e.key==='B')")
+        assert ctrl_b_idx >= 0, "Ctrl+B handler not found in boot.js"
+        ctrl_b_block = BOOT_JS[max(0, ctrl_b_idx - 250):ctrl_b_idx + 300]
+        ctrl_k_block = _ctrl_k_branch_window()
+        for needle in (
+            "const t=e.target",
+            "const isText=t&&",
+            "tagName==='INPUT'",
+            "tagName==='TEXTAREA'",
+            "isContentEditable",
+        ):
+            assert needle in ctrl_b_block, f"Ctrl+B guard missing {needle!r}"
+            assert needle in ctrl_k_block, f"Ctrl+K guard missing {needle!r}"
+
+    def test_ctrl_k_still_creates_new_session_outside_inputs(self):
+        branch = _ctrl_k_branch_window()
+        assert "newSession()" in branch
+        assert "closeMobileSidebar()" in branch