Showcase Worklane on GitHub

[geraldsummers]

What changed

• Turned the README into a compact product showcase with a repository-native hero, value proposition, quick start, and terminal tour.
• Documented the persistence boundary, lifecycle guardrails, local/remote architecture, profiles, JSON automation, repository structure, and trust model.
• Added the MIT license file so GitHub can detect the declared license.
• Replaced the placeholder Cargo repository URL with the real GitHub URL.

Why

The implementation was stronger than its repository presentation. The previous README opened with build internals, did not explain why Worklane exists, and left key GitHub metadata incomplete. This makes the repository itself serve as the appropriately sized product page for portfolio visitors and technical reviewers.

Impact

Documentation and metadata only; runtime behavior is unchanged. The claims and examples were checked against the current CLI, mount validation, remote executor, drift handling, and archive behavior.

Validation

• cargo fmt --check
• cargo clippy --workspace --all-targets -- -D warnings
• cargo test --workspace (28 tests)
• cargo llvm-cov --workspace --fail-under-lines 90 (90.95% line coverage)
• SVG XML validation and Chromium render check
• Diff whitespace and credential-pattern scans