Extended the Architecture section

[nastena1606]

No description provided.

[Copilot]

Pull request overview

This PR expands and reorganizes the documentation “Architecture” content by adding new Operator overview pages, updating MkDocs navigation to surface them, and introducing tooling to generate/update an Operator workflow diagram.

Changes:

• Add new conceptual docs pages (“Kubernetes Operator concepts”, “How the Operator works”, “Features and capabilities”) and wire them into the MkDocs nav.
• Rewrite/extend docs/architecture.md with more detailed component and workflow explanations.
• Add a diagram-generation script (and dependency) for an Operator control-flow diagram, plus minor doc/link wording tweaks.

Reviewed changes

Copilot reviewed 8 out of 12 changed files in this pull request and generated 10 comments.

Show a summary per file

File	Description
requirements.txt	Adds diagrams dependency to support diagram generation tooling.
mkdocs-base.yml	Reworks navigation under “Understand the Operator” and links new pages.
docs/scaling.md	Minor wording/punctuation tweak when referencing Architecture.
docs/operator-how-it-works.md	New page describing reconciliation/CRDs and linking to architecture/features.
docs/operator-concepts.md	New conceptual overview page with embedded workflow diagram.
docs/features.md	New feature/capabilities overview page with links into the doc set.
docs/assets/fragments/what-you-install.txt	Minor wording tweak for the Architecture reference.
docs/assets/diagrams/operator_flow.py	Adds a script to generate/update the operator workflow diagram.
docs/architecture.md	Renames and significantly expands Architecture content and structure.
docs/assets/.DS_Store	Adds a macOS metadata file (should not be committed).
.gitignore	Attempts to ignore .DS_Store files (currently with a pattern bug due to trailing spaces).

[Copilot]

This component list has inconsistent punctuation/formatting (e.g., “LLVM (for JIT compilation).” followed immediately by “PMM Client for observability” without a period). Make the bullets consistent (capitalization and ending punctuation) to improve readability.