[Suggestion] Add context surgeon recommendations #40

Is your feature request related to a problem? Please describe.
The plugin identifies large contributors, but users still have to interpret the data and decide how to reduce context usage.

Describe the solution you'd like
Add a ranked recommendation view that combines system fragments, tool definitions, tool outputs, user messages, cache behavior, and compaction history into concrete savings suggestions.

Additional context
Execution order: 8, after #39. Include estimated token savings and avoid mutating prompts automatically.