feat(chat): save by default + share anonymously — auto-saved chats, guest-facing Share, success toast, action row

tests/e2e/test_sources_midstream_bug.py

@@ -255,10 +255,16 @@ def test_no_orphan_brain_message_when_navigated_before_first_token(
     # Wait until the scratchpad's tail is rendered (phase-17 thinking body,
     # ~2 700 chars / ≈4.5s, lengthened in phase 21) — the 4s pre-content
     # pause (SLOW_PRETOKEN_TRIGGER) is now running, so the navigation below
-    # lands inside pure thinking with a wide margin.
+    # lands inside pure thinking with a wide margin. Explicit timeout:
+    # the mock streams the tail at ≈12 chars / 0.02s (≈4.7s end-to-end),
+    # which outruns Playwright's 5s assertion auto-wait on a loaded host
+    # (the wait started at the FIRST thinking frame — the pre-existing
+    # race, phase 55 task 02 fix).
     thinking = page.locator(".msg.brain").last.locator("details.thinking")
     thinking.wait_for(state="attached", timeout=10_000)
-    expect(thinking.locator(".thinking-text")).to_contain_text(THINKING_TAIL)
+    expect(thinking.locator(".thinking-text")).to_contain_text(
+        THINKING_TAIL, timeout=30_000
+    )
     # Still pre-token: the button is the enabled Stop control (phase 48 —
     # the old disabled "Thinking…" busy state is gone).
     expect(page.locator("#send-btn")).to_be_enabled()