enhance: using mermaid output

[cloorc]

No description provided.

[Copilot]

Pull Request Overview

This PR enhances the forest snapshot output format by migrating from a generic graph format to Mermaid diagram syntax for better visualization. The changes consolidate output from separate .graph and .mapping files into a single .mermaid file that can be rendered as flowcharts.

• Replace graph and mapping file outputs with Mermaid flowchart format
• Simplify node name generation by removing redundant match type suffixes
• Update snapshot monitoring to check for .mermaid files instead of .graph files

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
matcher.go	Updates snapshot file extension from .graph to .mermaid in comments and file monitoring
forest.go	Refactors node name generation to use simpler format and improves relationship tracking logic
dump.go	Converts forest dump output from separate graph/mapping files to single Mermaid flowchart format

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