Split override templates into a light index and a per-template detail tool

[92Infinitus92]

get_override_templates returned every template in full: properties, PDA layout, the whole constant catalog, and a ~160KB IDL inlined per template. An agent had to load all of that just to see what was available.

This splits it in two:

• get_override_templates now returns a light index - id, name, description, protocol, account type, tags, and a hasLlmContext flag. No properties, no IDL, no inlined options.
• get_override_template(templateId) returns one template's full detail, with each constant summarized as {label, description, optionsCount} instead of the raw option list.

The flow is index → pick → detail → search_constant_options for a concrete value → create_scenario, and the guidance text walks the model through that order.

Stacked on #3 (base feat/pump-protocol); I'll retarget to develop once that merges.

Greptile Summary

The PR replaces the full override-template listing with a lightweight index and adds a separate tool for retrieving one template’s details.

• Returns only identifying and classification fields from the template index and resource.
• Adds get_override_template for properties, address information, LLM context, and summarized constants.
• Updates MCP guidance and tests for the index → detail → constant search → scenario workflow.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
crates/mcp/src/surfpool/mod.rs	Splits override-template discovery from detailed retrieval, updates tool guidance and resource output, and adds focused coverage for the new workflow.

Sequence Diagram

sequenceDiagram
    participant Agent
    participant MCP as Surfpool MCP
    Agent->>MCP: get_override_templates()
    MCP-->>Agent: Lightweight template index
    Agent->>MCP: get_override_template(templateId)
    MCP-->>Agent: Properties, address, context, constant summaries
    Agent->>MCP: search_constant_options(templateId, constant, query)
    MCP-->>Agent: Concrete constant values
    Agent->>MCP: create_scenario(...)
    MCP-->>Agent: Registered scenario result

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[92Infinitus92]

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