fix(status): correct context percentage calculation and sync consolidator

- Pass resolved self.context_window_tokens to Consolidator instead of
  raw parameter that could be None, preventing consolidation failures
- Calculate percentage against input budget (ctx - max_completion - 1024)
  instead of raw context window, consistent with Consolidator/snip formulas
- Pass actual max_completion_tokens from provider to build_status_content
- Cap percentage display at 999 to prevent runaway values
- Add tests for budget-based percentage and cap behavior

tests/cli/test_restart_command.py

@@ -149,7 +149,7 @@ class TestRestartCommand:
         assert response is not None
         assert "Model: test-model" in response.content
         assert "Tokens: 0 in / 0 out" in response.content
-        assert "Context: 20k/65k (31%)" in response.content
+        assert "Context: 20k/65k (31% of input budget)" in response.content
         assert "Session: 3 messages" in response.content
         assert "Uptime: 2m 5s" in response.content
         assert "Tasks: 0 active" in response.content
@@ -213,7 +213,7 @@ class TestRestartCommand:
 
         assert response is not None
         assert "Tokens: 1200 in / 34 out" in response.content
-        assert "Context: 1k/65k (1%)" in response.content
+        assert "Context: 1k/65k (1% of input budget)" in response.content
         assert "Tasks: 0 active" in response.content
 
     @pytest.mark.asyncio