fix(gui): Resolve MiniMax compression error and fix Markdown table rendering

- Correctly route 'minimax' provider in run_discussion_compression.
- Fix MiniMax base URL to api.minimax.io to match main sender.
- Refactor read-mode discussion entries to always use a scrollable child with auto-resize.
- Remove redundant text wrapping that caused Markdown tables to squash vertically.
- Clean up duplicate separators in discussion hub.

src/ai_client.py

@@ -2659,6 +2659,16 @@ def run_discussion_compression(discussion_text: str) -> str:
    return r.json()["choices"][0]["message"]["content"]
   except Exception as e:
    return f"ERROR: DeepSeek compression failed: {e}"
+ elif _provider == "minimax":
+  _ensure_minimax_client()
+  if _minimax_client:
+   resp = _minimax_client.chat.completions.create(
+    model=_model,
+    messages=[{"role": "user", "content": prompt}],
+    temperature=0.0,
+    max_tokens=2048
+   )
+   return resp.choices[0].message.content or ""
  elif _provider == "gemini_cli":
   adapter = GeminiCliAdapter(binary_path="gemini")
   resp_data = adapter.send(prompt, model=_model)