docs: clarify additive HTTP transport boundaries

feat: add experimental streamable HTTP entrypoint

refactor: share MCP server construction

test: enforce pragmatic coverage thresholds

test: add MCP server smoke coverage

test: expand user-facing tool scenarios

test: add query builder evaluation fixtures

test: deepen recommendation tool scenarios

refactor: tighten extractor typing

refactor: split query builder components

refactor: split logger bootstrap and monitoring

refactor: improve batch analysis orchestration

refactor: split mana base planning helpers

refactor: clarify parser capability boundaries

refactor: simplify scryfall client request flow