[codex] STR-3200 add dev-cli release workflow

[madan-oss]

What changed

Added a dedicated dev-cli distribution workflow and a short README note describing where operators can fetch prebuilt binaries.

Why

External operators should not need to compile dev-cli locally just to derive onboarding outputs. The repo already builds dev-cli in CI, but it did not package or publish downloadable binaries.

Scope

• add .github/workflows/dev-cli-release.yml
• build native dev-cli release binaries for Linux x86_64 and macOS arm64
• upload packaged binaries and SHA-256 files as workflow artifacts on manual runs
• publish the same files as GitHub release assets on v* tags
• document the distribution path in bin/dev-cli/README.md

Validation

• git diff --check
• YAML parse check with Ruby

Jira

• STR-3200

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 86.23%. Comparing base (77ccd84) to head (555f2f9).
⚠️ Report is 6 commits behind head on main.

@@            Coverage Diff             @@
##             main     #502      +/-   ##
==========================================
- Coverage   86.31%   86.23%   -0.09%     
==========================================
  Files         222      216       -6     
  Lines       24289    23997     -292     
==========================================
- Hits        20965    20693     -272     
+ Misses       3324     3304      -20     

see 10 files with indirect coverage changes

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• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Rajil1213]

@madan-oss any plans to move this out of draft or close it?