chore(docs): update CI/CD docs for standard vs composable split

[arrowplum]

Summary

Restructures the CI/CD documentation into two clear paths: a "standard" guide (CICD-standard.md) for the recommended orchestrated workflows, and a "composable" guide (CICD-with-shared-actions.md) for teams that need fine-grained control over individual pipeline stages. Version references are updated from v2.0.3 to v3.2.0 throughout.

The standard doc now leads with a mermaid sequence diagram and includes a full combined example (artifacts + docker + release bundle). The composable doc is repositioned as the "eject" path with detailed manual composition examples showing how jf-build-id and artifact names must align between stages.

Changes

• Split docs into standard (orchestrated) vs composable (eject) paths with clear cross-references
• Added mermaid sequence diagram and combined pipeline example to CICD-standard.md
• Added full composable pipeline examples with key alignment notes (build IDs, artifact names)
• Updated all version references from v2.0.3 to v3.2.0
• Minor formatting fixes and troubleshooting clarifications

Test plan

Docs-only change - no functional impact.