Bug: Context visualization uses identical symbols making it unreadable

The /context command in the VS Code extension uses symbols that are literally identical without color coding, making the output nearly useless.

Current output:

⛁ System prompt: 2.9k tokens (1.5%)
⛁ System tools: 11.4k tokens (5.7%)
⛝ Reserved: 45.0k tokens (22.5%)
⛁ Memory files: 1.5k tokens (0.8%)
⛁ Messages: 13.1k tokens (6.6%)
⛶ Free space: 81k (40.5%)

Problem:

• ⛁ appears for System prompt, System tools, Memory files, AND Messages (4 out of 5 categories!)
• Without color coding, you literally cannot tell which line is which
• The CLI version had color-coded symbols that made this instantly readable

Impact:
The context visualization is essentially broken - users can't quickly assess token usage by category

Expected behavior:
Either restore color coding from CLI, or use actually distinct symbols/characters

Environment:
VS Code extension (current version)