Refresh v0.14.0 documentation and demo tapes

[ynqa]

Summary

• refresh the main feature overview around the v0.14 architecture:
  • application-owned prompt composition
  • optional runtime and terminal lifecycle
  • viewport-aware rendering
  • reusable, feature-gated widgets
• streamline the promkit-widgets README into a concise introduction, setup guide, widget list, and responsibility overview
• add an example index with short descriptions and document the CSV viewer
• add a CSV demo tape and self-contained CSV fixture
• update the JSON and YAML tapes to use equivalent Kubernetes fixtures stored under tapes/
• keep tape fixtures tracked while generated GIFs remain ignored
• fix the documented query-selector binary name

Validation

• cargo test -p csv-viewer
• vhs validate 'tapes/{csv,json,yaml}.tape'
• rendered and visually checked the CSV, JSON, and YAML tapes
• git diff --check

[Copilot]

Pull request overview

Refreshes promkit’s v0.14.0 documentation and recorded VHS demo tapes to align with the current architecture and to add a CSV example + demo assets, keeping shared fixtures version-controlled while continuing to ignore generated GIF outputs.

Changes:

• Updated the main README feature overview and added an examples index plus a documented CSV example.
• Added a CSV VHS tape and a self-contained CSV fixture; updated JSON/YAML tapes to use shared Kubernetes fixtures.
• Adjusted .gitignore so tape fixtures remain tracked while generated tapes/*.gif outputs stay ignored.

Reviewed changes

Copilot reviewed 8 out of 9 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tapes/yaml.tape	Updates the YAML demo to run against the new shared Kubernetes YAML fixture and adjusts navigation steps.
tapes/kubernetes.yaml	Adds a version-controlled Kubernetes YAML fixture used by the YAML demo tape.
tapes/kubernetes.json	Adds a version-controlled Kubernetes JSON fixture used by the JSON demo tape.
tapes/json.tape	Updates the JSON demo to run against the new shared Kubernetes JSON fixture and adjusts navigation steps.
tapes/csv.tape	Adds a new CSV demo tape for recording the CSV viewer interaction.
tapes/csv.csv	Adds a self-contained CSV fixture used by the CSV demo tape.
README.md	Refreshes v0.14 feature docs, adds an examples table of contents, documents the CSV example, and fixes the query-selector binary name.
promkit-widgets/README.md	Streamlines widget documentation into a concise getting-started guide, widget list, and responsibility boundaries.
.gitignore	Ensures tape fixtures stay tracked while keeping generated tape GIFs ignored.

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