v1.0.5 — Streaming bold Hebrew fix

Fix: bold Hebrew/Arabic text in Cursor agent replies appeared with reversed
word order during streaming. After the stream finished it corrected itself,
but mid-stream the words were visually flipped (only in bold/italic runs).
Root cause was Cursor's streamdown wrapping each streamed word in its own
, which combined with our unicode-bidi isolation made each span an
independent bidi unit. v1.0.5 lets those spans rejoin the parent paragraph's
bidi flow so the whole sentence is treated as one RTL run.