Merge #441: docs: refresh README for 0.1.0 release

b58d80e docs: add tracker demo repository reference (Jose Celano)
380aab0 docs: update README for 0.1.0 release status (Jose Celano)

Pull request description:

  ## Summary
  - Update the root README to reflect the 0.1.0 fully functional release status.
  - Simplify and clarify README structure with a concise quick start and documentation map.
  - Add a reference to the tracker demo repository for post-deployment operations and maintenance context.

  ## Validation
  - `cargo run --bin linter markdown`

ACKs for top commit:
  josecelano:
    ACK b58d80e

Tree-SHA512: 17b8eaf3eebe1351c80c5d3a3bbdb3cce0578bd30f2950caf64c43848be8780448bf19862fb9b9005a2b6f3f52d2b88cfd00c391e3b23756b5fa180670bb5a4b

Author: josecelano