refactor(mcp): rename lib iii_mcp -> mcp

[guibeira]

Renames the local Rust lib identifier iii_mcp -> mcp for the mcp worker.

Scope

• mcp/Cargo.toml: [lib] name = "iii_mcp" -> name = "mcp" (lib name line only).
• Rewrote internal lib import paths: use iii_mcp:: / iii_mcp:: -> mcp in mcp/src/main.rs, mcp/tests/common/engine.rs, mcp/tests/steps/errors.rs.

The folder, worker name:, package name, and bin were already mcp; only the lib identifier and its import paths changed.

External deps untouched

The iii-sdk and iii-observability dependency lines in mcp/Cargo.toml are byte-identical to main. git diff main -- mcp/Cargo.toml shows only the lib name line changed.

Verification

• cargo build: PASS
• cargo test: PASS (38 unit tests; 23 BDD scenarios / 104 steps)
• Sanity grep iii_mcp (excluding node_modules/target): empty

[vercel]

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Project	Deployment	Actions	Updated (UTC)
workers	Ready	Preview, Comment	Jun 15, 2026 1:05pm

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✨ Finishing Touches

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• Create PR with unit tests
• Commit unit tests in branch refactor/rename-iii-mcp

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[github-actions]

skill-check — worker

0 verified, 18 skipped (no docs/).

Layer	Result
structure	✓
vale	✓
ai	✓
render	✓

Four for four. Nicely done.