CLI-037 — Add end-to-end MVP smoke test workflow

[dDevAhmed]

Summary

Create an end-to-end validation that exercises the CLI through its built executable against supported fixture/generated projects.

Scope

• build/install/link the CLI in CI;
• run representative --help, --version, doctor, generation, test, and safe Testnet-mocked/controlled flows as appropriate;
• verify exit codes and generated artifacts;
• keep live external dependencies optional/segregated.

Acceptance Criteria

• the built executable, not only source modules, is exercised;
• at least one generated project completes a documented smoke path;
• failures surface clearly in CI;
• tests do not require secrets for normal PR validation;
• network-dependent checks are isolated from deterministic core smoke tests.

Dependencies

• CLI-002 through CLI-036 as applicable

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🏷 Labels

• type: test
• area: testing
• priority: P1
• difficulty: advanced