feat: add metadata capability + fix flaky cache test

[jongio]

Summary

Adds the metadata extension framework capability and fixes a flaky test.

Changes

Metadata Capability

• Added metadata to extension.yaml capabilities
• New commands/metadata.go using azdext.GenerateExtensionMetadata() for IntelliSense and CLI help

Test Fix

• TestNewCacheManager was failing because findAzureDir walks up parent directories and finds a .azure dir above the temp dir. Fixed by using NewCacheManagerWithOptions with an explicit CacheDir to properly isolate the test.

Changes

• 5 files changed, 46 insertions(+), 23 deletions(-)

[github-actions]

🚀 Website Preview

Your PR preview was available here.

Preview has been cleaned up as the PR was closed.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 17 lines in your changes missing coverage. Please review.
✅ Project coverage is 54.73%. Comparing base (ee35584) to head (441895a).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
cli/src/cmd/app/commands/metadata.go	0.00%	17 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #142      +/-   ##
==========================================
+ Coverage   54.56%   54.73%   +0.17%     
==========================================
  Files         147      148       +1     
  Lines       22285    22318      +33     
==========================================
+ Hits        12160    12216      +56     
+ Misses       9365     9338      -27     
- Partials      760      764       +4     

Flag	Coverage Δ
unittests	54.73% <0.00%> (+0.17%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
cli/src/cmd/app/commands/metadata.go	0.00% <0.00%> (ø)

... and 4 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[github-actions]

🚀 Test This PR

A preview build (0.12.4-pr142) is ready for testing!

🌐 Website Preview

Live Preview: https://jongio.github.io/azd-app/pr/142/

One-Line Install (Recommended)

PowerShell (Windows):

iex "& { $(irm https://raw.githubusercontent.com/jongio/azd-app/main/cli/scripts/install-pr.ps1) } -PrNumber 142 -Version 0.12.4-pr142"

Bash (macOS/Linux):

curl -fsSL https://raw.githubusercontent.com/jongio/azd-app/main/cli/scripts/install-pr.sh | bash -s 142 0.12.4-pr142

Uninstall

When you're done testing:

PowerShell (Windows):

iex "& { $(irm https://raw.githubusercontent.com/jongio/azd-app/main/cli/scripts/uninstall-pr.ps1) } -PrNumber 142"

Bash (macOS/Linux):

curl -fsSL https://raw.githubusercontent.com/jongio/azd-app/main/cli/scripts/uninstall-pr.sh | bash -s 142

---

Build Info:

• Version: 0.12.4-pr142
• Commit: 441895a
• Release: View pre-release

What to Test:
Please review the PR description and test the changes described there.