Live Stream: skip stale compression recovery fallback

Treat a cleared session-level compression_recovery payload as authoritative so old message metadata cannot intercept a later generic continuation after a successful new turn.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

static/ui.js

@@ -440,6 +440,9 @@ function _activeCompressionRecoveryPayload(){
   if(!S||!S.session) return null;
   const recovery=S.session.compression_recovery;
   if(recovery&&typeof recovery==='object'&&String(recovery.terminal_state||'')==='compression_exhausted') return recovery;
+  // A cleared session-level recovery payload is authoritative. Only scan
+  // message metadata for older sessions that never exposed this field.
+  if(Object.prototype.hasOwnProperty.call(S.session,'compression_recovery')) return null;
   const messages=Array.isArray(S.messages)?S.messages:[];
   for(let i=messages.length-1;i>=0;i--){
     const msg=messages[i];

tests/test_compression_recovery_action.py

@@ -296,3 +296,17 @@ def test_compression_recovery_ui_wires_card_action_and_send_intercept():
     assert "function shouldInterceptCompressionRecoveryContinuation" in ui
     assert "shouldInterceptCompressionRecoveryContinuation(text,S.pendingFiles)" in messages
     assert "_compressionRecovery:recovery||undefined" in messages
+
+
+def test_compression_recovery_ui_skips_message_fallback_after_session_clear():
+    ui = (ROOT / "static/ui.js").read_text(encoding="utf-8")
+    start = ui.index("function _activeCompressionRecoveryPayload(){")
+    end = ui.index("function isGenericCompressionContinuationIntent", start)
+    body = ui[start:end]
+
+    session_guard = "Object.prototype.hasOwnProperty.call(S.session,'compression_recovery')"
+    message_scan = "const messages=Array.isArray(S.messages)?S.messages:[]"
+
+    assert session_guard in body
+    assert message_scan in body
+    assert body.index(session_guard) < body.index(message_scan)