refactor: clean dead code, add high-value tests, streamline docs

[rsonghuster]

Summary

Behavior-preserving refactor covering dead-code cleanup, test gaps, and documentation. No public API changes — all 22 command exports in src/index.ts are unchanged. Verified by typecheck + full unit suite + ncc build.

Dead code (safe cleanup only)

• Remove ~17 comment-only dead blocks (kept meaningful TODOs).
• Rename misnamed goLocalInvoke.ts → goLocalStart.ts (the class is GoLocalStart, and the old name collided with invoke/goLocalInvoke.ts); import updated.
• Add ts-prune / depcheck audit scripts. Audit confirms no production dependency is safely removable — flags are interface/ public types and ts-jest/e2e/f2elint transitive deps.

Tests (high-value gaps first)

• +12 test files / +120 cases for previously untested modules: resource clients acr/oss/ram/vpc-nas, info, 2to3, deploy/impl (base/trigger/vpc_binding), deploy/utils, run-command.
• Coverage: oss/ram/vpc-nas 0→100%, acr 0→80.8%, info 0→98.9%, 2to3 0→98.5%.
• Overall statement coverage 61.87% → 67.36%.
• jestconfig: added collectCoverageFrom to expose real coverage.
• Split test to unit-only (no credentials required); added test:it for integration tests.

Docs

• Deleted: empty version.md, redundant root CONTRIBUTING.md (generic boilerplate with wrong repo refs), and stale AI meta-docs (project-summary, testing-plan, technical-documentation).
• Consolidated contribution guide into docs/CONTRIB.md; rewrote docs index and architecture design notes.
• Fixed README node badge >=14.14.0 → >=16; updated CLAUDE.md scripts table.

Test plan

• npm run typecheck — clean
• npm test — 75 suites, 1122 passed / 2 skipped
• npm run build — ncc bundle produced
• npm run lint — 0 errors
• CI green on all three platforms (node16)

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 59820cfa-7e92-4590-91cc-01edd3ab9338

📥 Commits

Reviewing files that changed from the base of the PR and between e22227e and ea5ade6.

⛔ Files ignored due to path filters (1)

• package-lock.json is excluded by !**/package-lock.json

📒 Files selected for processing (45)

• CLAUDE.md
• CONTRIBUTING.md
• README.md
• __tests__/ut/commands/2to3/index_test.ts
• __tests__/ut/commands/deploy/impl/base_test.ts
• __tests__/ut/commands/deploy/impl/trigger_test.ts
• __tests__/ut/commands/deploy/impl/vpc_binding_test.ts
• __tests__/ut/commands/deploy/utils/index_test.ts
• __tests__/ut/commands/info/index_test.ts
• __tests__/ut/local/local_test.ts
• __tests__/ut/resources/acr/index_test.ts
• __tests__/ut/resources/acr/login_test.ts
• __tests__/ut/resources/oss/index_test.ts
• __tests__/ut/resources/ram/index_test.ts
• __tests__/ut/resources/vpc-nas/index_test.ts
• __tests__/ut/utils/run-command_test.ts
• docs/CONTRIB.md
• docs/RUNBOOK.md
• docs/architecture.md
• docs/project-summary.md
• docs/readme.md
• docs/technical-documentation.md
• docs/testing-plan.md
• jestconfig.json
• package.json
• src/interface/trigger.ts
• src/resources/acr/login.ts
• src/resources/fc/impl/utils.ts
• src/resources/fc/index.ts
• src/resources/vpc-nas/index.ts
• src/subCommands/deploy/impl/custom_domain.ts
• src/subCommands/deploy/impl/function.ts
• src/subCommands/deploy/impl/provision_config.ts
• src/subCommands/invoke/index.ts
• src/subCommands/local/impl/invoke/baseLocalInvoke.ts
• src/subCommands/local/impl/invoke/customContainerLocalInvoke.ts
• src/subCommands/local/impl/invoke/pythonLocalInvoke.ts
• src/subCommands/local/impl/start/customLocalStart.ts
• src/subCommands/local/impl/start/goLocalStart.ts
• src/subCommands/local/index.ts
• src/subCommands/logs/index.ts
• src/subCommands/plan/index.ts
• src/subCommands/remove/index.ts
• src/utils/run-command.ts
• version.md

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch refactor/cleanup-tests-docs

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