feat: add config-bundle CLI commands

[nborges-aws]

Description

Adds imperative CRUDL and version listing commands for AgentCore evaluation configuration bundles:

• eval config-bundle create
• eval config-bundle get
• eval config-bundle list
• eval config-bundle update
• eval config-bundle delete
• eval config-bundle version list

Summary of changes

• --components accepts inline JSON, file://<path>, or stdin (-) via SourceResolver.
• Component input parsed and validated via parseJsonFlagWithSchema utility.
• get calls the latest-bundle API by default and the version API when optional --version is provided.
• list returns configuration bundles, while version list returns all versions belonging to one bundle.
• update requires --id, --components, and --commit-message; --kms-key-arn remains optional. This counteracts the service API docs and smithy models, but is the confirmed validation structure in the service itself
• Updates fetches the latest bundle version and pass it as the sole parentVersionIds entry, as required by service lineage validation.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Other (please describe):

Testing

How have you tested the change?
Manually smoke tested all commands against a configuration bundle in my personal account:

• Creating a bundle from a components file
• Listing bundles
• Getting the latest bundle
• Getting a specific version
• Updating components and creating a new version
• Listing bundle versions
• Deleting the bundle

• bun run test (993 pass, 0 fail)

• I ran npm run test:unit and npm run test:integ

• I ran npm run typecheck

• I ran npm run lint

• If I modified src/assets/, I ran npm run test:update-snapshots and committed the updated snapshots

Checklist

• I have read the CONTRIBUTING document
• I have added any necessary tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have added an appropriate example to the documentation to outline the feature, or no new docs are needed
• My changes generate no new warnings
• Any dependent changes have been merged and published

---

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[codecov-commenter]

Codecov Report

❌ Patch coverage is 98.72611% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 95.80%. Comparing base (64058e3) to head (7a4527d).

Files with missing lines	Patch %	Lines
src/handlers/eval/config-bundle/components.ts	95.65%	1 Missing ⚠️
src/handlers/eval/config-bundle/delete/index.tsx	94.44%	1 Missing ⚠️
src/handlers/eval/config-bundle/get/index.tsx	96.29%	1 Missing ⚠️
...handlers/eval/config-bundle/version/list/index.tsx	96.55%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##           refactor    #1945      +/-   ##
============================================
+ Coverage     95.74%   95.80%   +0.05%     
============================================
  Files           291      300       +9     
  Lines         16234    16547     +313     
============================================
+ Hits          15544    15853     +309     
- Misses          690      694       +4     

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